Plant Pathology Department:...
 Faculty, staff, students, alumni,...
 Things to think about
 John R. Edwardson: 1932-2002
 Recent grants
 Biannual meeting of the Florida...

Group Title: PLP news
Title: PLP news. Volume 6, Issue 2. Summer/Fall, 2002
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00067320/00020
 Material Information
Title: PLP news. Volume 6, Issue 2. Summer/Fall, 2002
Series Title: PLP news
Physical Description: Serial
Creator: Plant Pathology Department, IFAS, University of Florida
Affiliation: University of Florida -- College of Agricultural and Life Sciences -- Plant Pathology Department -- Institute of Food and Agricultural Sciences
Publisher: Plant Pathology Department, Institute of Food and Agricultural Sciences, University of Florida
Publication Date: 2002
Funding: Florida Historical Agriculture and Rural Life
 Record Information
Bibliographic ID: UF00067320
Volume ID: VID00020
Source Institution: Marston Science Library, George A. Smathers Libraries, University of Florida
Holding Location: Florida Agricultural Experiment Station, Florida Cooperative Extension Service, Florida Department of Agriculture and Consumer Services, and the Engineering and Industrial Experiment Station; Institute for Food and Agricultural Services (IFAS), University of Florida
Rights Management: All rights reserved by the source institution and holding location.

Table of Contents
    Plant Pathology Department: 1952-2002
        Page 1
        Page 2
        Page 3
        Page 4
    Faculty, staff, students, alumni, and colleagues of our department
        Page 5
    Things to think about
        Page 6
    John R. Edwardson: 1932-2002
        Page 7
    Recent grants
        Page 8
    Biannual meeting of the Florida Phytopathological Society (FPS) 2003
        Page 9
        Page 10
Full Text

* Plant Pathology Department 1952-2002
* News from Faculty, staff, students, alumni, and col-


* Facts on North Carolina

From the students of
the Plant P 2'
Department to our community
Volume 6 Issue 2

PLP News


Plant Pathology Department


by Dr. H. H. Luke

Dr. O. F. Beger was head of the
first Plant Pathology Department
(PPD), which was designated as a unit
of the experiment station in 1920.
However, the teaching of plant pathol-
ogy dates back to 1907-08. Since a re-
cent history of the PPD has been writ-
ten (Roberts, Florida Phytopathological
Society Newsletter v.3, n.1, 1992), what
follows is not a historical rerun but a
description of how the department de-
veloped during the past 50 years.
An overview of the south campus
and mention of some historic events
may be of interest to readers. South of
the century tower there was a grove of
large orange trees, killed by the cold in
the early 1960's. This area is now occu-
pied by the music building. South of the
music building is building 866, which
was first constructed by the experiment
station after World War II. There was a
calf pasture and a large silo on the N. E.
comer of Newell Drive and Museum
Drive where the parking facility is now
located. On the S.E. corner of the
above mentioned intersection, was
WRUF radio station, thus the old name
radio road, which is now Museum drive.

When WRUF was moved, the transmit-
ters were located just west of Interstate
1-75 near Newberry Road, resulting in
the current name Tower Road. There
was a little airport (Stengel Field) on the
east end of Butler Plaza, where World
War II pilots were trained. The "Pitts"
Special was designed and built at Stengel
field, and was considered the best aero-
batic plane for 40 years. The Pitts Spe-
cial and the U of F were Gainesville's
only claim to fame until Steve Spurier
Now that you have the lay of the
land, let's have a look at how the Ex-
periment Station, the College of Agricul-
ture and the Plant Pathology Depart-
ment (PPD) developed.
In 1951 Dr. Webber established a
PhD. Program in the College of Agricul-
ture and went on a recruiting trip. Dur-
ing the summer of 1952 two prospective
graduate students visited the depart-
ment, and here is what they saw: the
teaching staff consisted of two profes-
sors (Dr. Webber and Owens) and was
located on the 5th floor of Rolfs Hall; no
air conditioners, no elevators and a se-
vere bird problem. Equipment con-

sisted of an autoclave that worked on
good days, a reliable Bunsen burner and
several boxes of litmus paper. There
were (Tisdale, Decker, Miller, Anderson,
and Mr. West) five professors in the
Experiment Station. Mr. West was a
Botanist and it is not known why he was
in the PPD. The experiment station and
the college were completely separated,
budget-wise and otherwise. Depart-
ments in both groups had their own
department chairmen, as well as separate
deans and sub-deans. Administrative
over-load was one of the reasons the
system collapsed under its own weight.
Stay tuned for the coming of IFAS!
Soon after Dr. Decker was ap-
pointed Chairman of Plant Pathology,
the Experiment Stations staff moved out
of Newell Hall, so that the Agronomy
Department would have space for their
members. Plant Pathology moved to
three different locations: (1) the old
USDA Tung oil lab located between the
Agricultural Library and the Forestry
building; (2) building 866, an abandoned
poultry disease lab just across the street
from the McCarty Hall parking lot; and
(3) what became known as the virus lab


on the southwest corner of Lake Alice.
Thus, plant pathologists were housed in
three separate locations until they
moved to Fifield Hall. Three plant (for-
est) pathologists in the school of forestry
did not move to Fifield Hall, but en-
rolled their Ph.D. candidates in the PPD
Since the timeline is out of se-
quence, it may not cause too much
confusion to tell you a little story about
W.H. Bile Fifield for whom our current
building was named. Although Mr.
Fifield was Provost of Agriculture, it was
difficult to determine how he fit into the
scheme of things. Even though he had
no budget, except for a secretary and
travel, he was widely known as an excel-
lent after dinner speaker and a political
facilitator. The following story is a dem-
onstration of his talent. Every year
Frances Brannon (Florida Seed and
Feed Co.), who was prominent in North
Florida Agriculture, invited some people
from the experiment station to a barbe-
que at his warehouse in Ocala, Florida.
At the end of his after dinner speech Mr.
Fifield said, "Frances, I hope you will
note that anyone who would eat burned
chicken and drink cheap whiskey in a
cold warehouse full of Millorganite des-
perately needs a pay raise, so we would
appreciate your help with this problem."
It is not known at the time what effect
Mr. Fifield's request had, but a pay raise
was approved during the next meeting
of the legislature. Unfortunately, this
pay raise occurred almost two years later
because the legislator only met every
two years!
When Dr. Decker departed, the
search committee and the staff could
not agree on a candidate acceptable to
the majority. This is a common occur-
rence because individuals prefer a
chairman with whom they are familiar.
The problem became more complex
because there were two department
members who considered themselves
qualified for the job. The stalemate con-
tinued for some time, when somewhat
out of the blue, not one but two candi-
dates appeared for the interview. The

irony was that neither was qualified. In
fact the main interest of one candidate
was to identify staff members who were
considered as "dead-wood" and stated
that he would forth with rid the univer-
sity of them. Apparently he was not
aware of the tenure system! Following
this misfortune, the Provost of Agricul-
ture declared that we need not to worry
about finding a department chairman,
and that he would find one for us, which
he did.
Here it seems desirable to comment
on a revolution called IFAS. As previ-
ously mentioned, Agriculture was di-
vided in three segments: the Experiment
Station, College of Agriculture, and Ex-
tension Services. Since these factions
were competing for the same resources
(money), this did not make for a har-
monious situation. It was amazing that
it worked as well as it did, but it was still
an inefficient organization. It is not
known who or what organization had
the political power to completely reor-
ganize Agriculture at the U of F. The
president was surely involved, but it re-
quired political power beyond the Uni-
versity to bring about such a radical
change. Nevertheless, an outsider was
brought in, and the three groups were
put under one command and renamed
the "Institute of Food and Agricultural
Science" (IFAS). The extension service
faculties were still a bit out of the loop,
but fit in well because they had dual ap-
pointments. Unfortunately, the dual
appointment system was changed at a
later date. In the final analysis all groups
were housed together, by department,
under one central command. Ulti-
mately, the title of provost was abolished
and replaced by the Vice President of
Agriculture. This was more than a name
change, because all funds came directly
to the Vice President, rather than to the
competing organizations.
Since those that control the money
call the plays, we now had one quarter
back team, which reduced some of the
administrative burden and demolished
the rivalry of the tripartite system. But
we did not live happily ever after, be-

cause that is not the nature of academia,
which thrives on diversity, therefore
increasing the probability of shooting
itself in the foot, which it did...stay
Our students are scattered far and
wide and occupy an array of positions in
Agriculture and other ventures. While
some are researchers at universities and
experiment stations, other are depart-
ment chairpersons, deans and subdeans.
In the past few years alone, our students
or post-docs have taken positions at the
University of Georgia; the USDA-ARS
in Florida, California, Puerto Rico and
France; University of Florida, Washing-
ton University, and Oregon State Uni-
versity; EMBRAPA, Federal Universities
and in the Instituto Biologico in Brazil;
some universities in New Zealand; and
private industry in the US. We have
graduates from years back who are de-
partment chairs, industry directors and
international collaborators.
The following trilogy describes the
ups and downs of three students and
delineates some of the measures used to
prepare them for the "real world". The
first two stories revolve around a rigor-
ous seminar system designed by Dr.
Berger to teach students how to organ-
ize, present and form conclusions about
a subject to which they were assigned.
They were cross-examined about their
conclusion that the students did not
understand or appreciate the importance
of the system. This is a gross under-
statement but ultimately a few of them
did understand.
The gist of this story revolves
around two students (student A and B).
Student A had several years of experi-
ence in a commercial nursery and
seemed to know everything worth
knowing about plant pathology. He
took pleasure in correcting people about
their lack of knowledge and droned on
about the proper way to control specific
diseases of plants. In short, he alienated
most of the students and caused profes-
sors to wonder why he needed addi-
tional knowledge. To get the full flavor

of the grand finale, one must assume
that student A finally realized that he
might be in deep "doo-doo" when he
presented his seminar. Anyway, on the
day of reckoning he seemed a bit shaky
and a little pale. When he tried to get
into the introduction, he turned as white
as a sheet and his speech slowed, caus-
ing Dr. Charudattan to ask "are you
ok???"...no answer another inquiry got
no answer, at which time student A
slowly sank to the floor in a full faint.
Several people departed the premises to
have a good laugh, while others hovered
around to bring him back to the land of
the living.
Student A departed the U of F in
such a hurry that he forgot to take his
young wife with him. He has not been
seen or heard from to this day. Another
interesting anecdote about this stu-
dent...one time when he received a
parking ticket, he paid it in person in
pennies to show his frustration with the
Student B did not end his connec-
tion with the PPD in a full faint, but his
reaction to the seminar system took an
unusual turn student B was a some-time
student and a semi-pro basketball player.
He was about 6'4", thus was nicknamed
"Long John". His claim to fame came
about when his basketball team was in-
vited to play the Cuban National Bas-
ketball team in Havana. This was in the
late 60's mid 70's when few Americans
were allowed to visit Cuba.
Long John was not prepared for his
scheduled seminar and had a lame ex-
cuse for his second scheduled date. The
end of the semester was coming and his
major professor said, "you will present
your talk or else" So he took the "or
else" option and has not been seen or
heard from since.
Since the first two stories are a bit
on the downside, it seen desirable to
skip the love triangle and murder story
and tell one that has an upside.
This story concerns a student re-
ferred to as C, who rightly assumed
there would be a need for plant scien-
tists trained in law. The law school he

entered provided C with the opportunity
to work in the field as a plant pathologist
and attend classes. He often came to
class right from the field in work clothes
and reeking of mosquito repellant. Be-
cause of C's appearance and odor, there
were often a lot of empty seats in his
vicinity. This provided C with plenty of
legroom. His classroom ambiance also
generated a lot of curiosity and ques-
tions from students and faculty alike.
Mid-way through law school, faculty and
students were well versed on the basics
of plant pathology and C was frequently
sought out for disease diagnosis of
house and garden plants. C continued
to work as a plant pathologist through-
out law school. On graduation, he ac-
cepted a position as an agricultural law-
yer and now heads an agricultural law
Let me add one more story. There
was a former student who constantly
chewed tobacco juice, and once, some
of this juice landed on the shoe of a fac-
ulty member. This unusual person also
had a cat to which he was very emotion-
ally attached to. In fact, when the cat
died, he wrapped it up in freeze wrap
and stuffed it in his major professor's
freezer. Years later, probably during a
power failure, the poor cat was discov-
ered. Everyone assumed that this stu-
dent could not bear to give the cat a
proper burial.
Students bring to mind a comment
made by the legendary E. C. Stakman
who said, "The only time one can evalu-
ate a student is about five years after
they graduate". Although this oddity
seems to contradict conventional
thought, it has some validity. The
strong desire to discover the solution to
a difficult problem and a strong work
ethic, are characteristics that separate
those who make important discoveries
from those who do not.
Students who want to dwell into re-
search should carefully read the book
"The Art of Scientific Investigation"
written by W. I. B. Beveridge. I also sug-
gest reading "The 8th Day of Creation"
by Watson. This will give the reader a

good understanding of the importance
of tenacity and the feeling for what
Beveridge called "A prepared mind".
For eons, foreign languages were
required for the Doctor of Philosophy
(Ph.D.) degree. In fact, most universi-
ties required two languages (usually
French and German). In the early
1970s, yet another nutty idea emerged
from California. i.e., the elimination of
the language requirement. What follows
is for the merriment of the students be-
cause it tells of the demise of the lan-
guage requirement at the UF PPD. Sev-
eral department members opposed this
change. The stalemate continued for
several months. Ultimately, when the
department chair noted that the dissent-
ers were out of town, he called a staff
meeting and passed a resolution to drop
the language requirement. To placate
the contras, a requirement of a biochem-
istry course was added as a replacement.
This change caused difficulties through-
out UF because the new medical school
was not pleased with the biochemistry
taught in the Chemistry Department.
However, the Chemistry Department
was not very interested in biochemistry
so the course was moved to the medical
school. This arrangement was not satis-
factory to the rest of UF because the
medical school emphasized medical bio-
chemistry. As a counter measure, the
botany department agreed to teach the
course, which turned out to be a non-
winner for reasons left unsaid. The bio-
chemistry course was moved with suc-
cess to the Food Science Department.
A few years later, advanced statistics was
added to curriculum, leaving the stu-
dents to choose between biochemistry
or statistics. Ultimately, special courses
for Ph.D. students was left to the discre-
tion of their major professor. Students
will probably be amused by the follow-
ing quote (if they can translate it ha ha
ha ha): "Dumpkopfen haben ge-
woehnen-alors laissez les bon temps
Please pardon the disruption of the
story-time line. What follows is a bit

verbose but is necessary to make an im-
portant point. During the 1970's and
1980's our department should have been
recognized as one of the best in the
USA. This opinion is substantiated by
accomplishments in ten different areas.
First among these was pioneering work
on the biocontrol of water hyacinths
with a plant pathogen in combination
with an insect. Additional studies ob-
tained wide acclaim, resulting in an In-
ternational conference on the biocontrol
of weeds at UF. Second, the plant virus
group published a monograph on poty-
viruses, defined the ultrastructure of
plant virus inclusions and demonstrated
that viruses can be easily identified using
the distinctive structure of inclusion
bodies. Third, several researchers ob-
tained recognition for their work on
bacterial diseases and the pathogen that
cause them. This research resulted in a
better understanding of the nature of the
hypersensitivity response, the identifica-
tion of resistance to several pathogens,
and the use of fatty acid analysis for the
identification of pathogens. Forth, an in
depth analysis of the epidemiology of
plant diseases revealed the effect of con-
trol measures on disease progress, and
designed models to predict the rate of
disease development. These discoveries
were vital to the development of the
Integrated Pest Management Programs.
Fifth, research on the nature of host-
pathogen physiology, demonstrated that
a "pathotoxin" initiated disease devel-
opment by disrupting the function of
the plasmalemma, but did not alter the
structural nature of it. Sixth, studies on
the relationship between male sterility
and disease development demonstrated
strict maternal inheritance of mitochon-
drial and chloroplast DNAs, determined
that the product of a plant gene controls
disease reaction, and identified the gene
product which confers disease toxin
sensitivity. Seven, studies on the epi-
demiology and biocontrol of soilbome
plant pathogens produced interesting
results on the relationship of inoculum
density to disease incidence in various
hosts, and described microbial commu-

nities in root systems of crop plants.
Eight, mycorrhizal studies on plant
growth and minerals uptake demon-
strated that Ectomycorrhizal organisms
are needed by some tropical plants for
better growth. These studies attracted
interest, resulting in the national collec-
tion of Ectomycorrhizae to be moved to
our department. Nine, studies on post
harvest diseases delineated factors that
control host range differences of strains
of Erninia sp, devised methods to re-
duce the potential of bacterial soft rot in
potato tubers, and determined the effi-
cacy of various halogen compounds for
sanitation of wash water system in pack-
ing houses. Tenth, one of our scientists
investigated the nature and function of
the NIF gene (or gene cluster), which is
a gene that controls nitrogen fixation in
legumes. If this "gene cluster" could be
transferred to grasses and induced to
function, will result in a true revolution
in Agriculture. This was so exciting that
one of our administrators proclaimed
that our scientists would teach plants to
produce their own fertilizer. You really
don't want to know the end of this, but
fertilize companies are alive and well,
and nitrogen is still the most expensive
component in the mix.
Members of the department re-
ceived the following awards: Nine fel-
lows, two Ruth Allen, Lee Hutchinson,
W.H. Westlin, Cambell, two USDA
awards, and the APS Southern Division
outstanding plant pathologist of the
year. Several students received the F. A.
Wood award and other students won
the best paper awards at the Southern
Division meetings. Recently two mem-
bers of the department received national
and local (UF) recognition for excellence
in teaching.
Some department members have
demonstrated their writing skills, which
resulted in text books and the editing of
publications such as "The History of
Science". Another publication, "Dis-
eases of Southern Turfgrasses" was so
popular that a second printing was nec-
essary. Recently, I.,l'hii .. ,-!', of North
America", "Biohistory", and a lab man-

ual entitled "Molds, Mildews, Mush-
rooms and Man" have been mostly re-
cently written.
At this juncture, the use of an his-
toric metaphor seems appropriate. Dur-
ing the signing of the Declaration of
Independence, some of the delegates
became a but squirrelly when they real-
ized that they were about to sign their
death warrant. Ben Franklin quickly
seized the moment and said "Indeed we
must all hang together, or otherwise we
shall most assuredly hang separately".
They did hang together and won. In the
past, the PPD did not hang together and
lost the chance of being recognized as
one of the best plant pathology depart-
ments in the USA.
The upside is that I felt a sense of
calm, which has been absent for 35
years. So, I really hope that you all will
pull together and give our chairwoman
your support, because she has the most
difficult job in academia. Moreover, a
combined effort will give the great
phoenix a chance to rise from the ashes
of his own destruction and fly away to
heliopolis to realize his rightful place in
the sun.
A noticeable period of time is miss-
ing from my observations because I was
out of the loop for some time, thus I
have no comments. The jargon of the
present "Band-wagon" of genetic engi-
neering (G.E.) is so confusing that I feel
as though I am in a foreign country.
The rapid shift from traditional
plant pathology leaves some traditional-
ist i;in- "What's going to happen
when an influential grower (farmer) ap-
pears with a diseased specimen that is
devastating his crop, and no one knows
what the hell it is". Whether Cullen is
still around, no problem, otherwise circle
the wagon, form a committee and de-
clare, "we are working on it". No seri-
ously, genetic engineering holds more
promise of making real progress in bio-
logical science than any other discovery
since Koch developed the germ theory
of disease. But similar thoughts about

other "Band-Wagons" have prevailed
for long periods of time. So, will the
garish greens and the Frankenfood
Freaks derail the G.E. train? Finis!

Dr. H. H. (Bill) Luke, who wrote this is-
sue's feature article has been 1 with our
department since 1955 and has seen his share of
both good and bad seminars. A no-nonsense
person and strong advocate of sound critical
thinking he decries the use of more sldes than
necessary (Seven is plenty.). Whether you agree
with him or not on this or other issues, he al-
ways provokes one to think. Although retired
since 1985, he still regular frequents our Fri-
day .. breaks, and as always, continues to
'.'::. us. Bill Luke was our department's
first recpient of the coveted APS Ruth Allen
Award, which he received in 1973, together
with his collaborator Frances M. Latterell. This
award was bestowed for their ground-breaking
work with Victoria blght of oats. It was dem-
onstrated for thefirst time that the blght smp-
toms were induced by a specfic toxin (victorin)
produced by the causal agent (Helminthoso-
rium victoriae). A native of Pavo GA, Bill
Luke received his BS in 1950from the Univer-
sity of Georgia and his Ph.D. in 1954 from the
Louisiana State University. Employed by the
USDA/ARS since graduation, hefirst took a
position at Stoneville MS before coming to
Gainesvile. Bill Luke saw action in World
War II as a B-17 bomber pilot and, after nu-
merous missions, was forced to land behind
enemy lines. He was captured by the Germans
and spent time in a prisoner of war camp. For-
tunately, he managed to escape and ended up in

Faculty, staff, students, alumni,
and colleagues of our de-

Dr. Joseph Reddy from Bangalore,
India, is a new postdoc in Dean
Gabriel's lab. He did his Masters in Ag-
ricultural Microbiology in the University
of Agricultural Sciences, Bangalore, in
1997. On August 1998 he went to the
University of Idaho at Moscow to pur-
sue his Ph.D. working of the Patho-
genicity and Biological Control ability of

Pseudomonas corrugata. He will be given
a seminar in three weeks for the Plant
Pathology series.

Ronald French obtained first place
in the Graduate Student Forum I: Crops
and Pest Management at the Soil and
Crop Science Society of Florida meeting.
The meeting took place from May 22-24
in Clearwater Beach, Florida. Ronald
competed against seven other students
and his presentation was titled "Survival
of Phytophthora cpsici in commercial field
pepper plantings". Congratulations,

Our department currently has 17
undergraduate students (10 3AG and 7
4AG); 9 are male and 8 are female. Ten
are listed under our Biotechnology op-
tion and 6 are in the Agricultural Tech-
nology option; 1 is undecided.

Since 1994, 35 students have re-
ceived undergraduate degrees from our
department, an average of 4.4 per year.

Of 34 graduate students currently in
our department, including those in the
PMC program, 13 (,38" '; have their un-
dergraduate degrees from our depart-

Counting Al-Saadi, Brunings, and
Chamusco (PMCB), and Davison and
Nielsen (DPI), we have 33 graduate stu-
dents. Of these, 15 (45%) are affiliated
with the RECs. (If you don't count
those five, .4".. are with the RECs.)

Ten of our 33 students ',I" ".., are
international. (The countries represented
are Argentina, Brazil, Colombia, Hun-
gary, Kuwait, Oman, Panama, South
Africa, Surinam, and Venezuela.)

Of our 33 graduate students 13
(30"'i have undergraduate degrees from
our department, i.e. Anderson, Balogh,
Cory, Donahoo, Hermle, Horrell,
Hutchens, Jurick, Mahovic, Mailhot,
Nielsen, Nodzon, Oliver. If you don't
count the 3 PMCB and 2 DPI students,

however, 43% of our students have un-
dergraduate degrees from our depart-
ment. Indeed, the majority of our 23
domestic students have undergraduate
degrees here :.2"..

In terms of gender we're pretty
evenly split: 18 are male (55%) and 15
are female (45%0).

We look pretty good overall in
terms of gender and US/international
student balance. Formerly what stood
out for us was the disproportionately
high number of international students
we had, but about 1/3 of them were
"gifts" to our department in that they
brought their own financing with them
and generally were of excellent quality.
This source of students has since de-
clined markedly, of course. The other
two changes are i) the growing number
of students working at the RECs (about
half) and ii) the large number of our
own undergraduates getting assistant-
ships and becoming graduate students
in our department (almost half).

Congratulations to Jennifer Gillett
for obtaining the prestigious Jack L. Fry
Graduate Teaching Award given by the
College of Agricultural and Life Sci-
ences. The purpose of this award is to
provide an award to a graduate student
for their excellence in teaching.

Congratulations to Ronald French
for obtaining the Davidson Travel Grant
given by the College of Agricultural and
Life Sciences. This grant is to provide
funding to help defray travel expenses
for graduate students presenting a paper
at a national or international professional
meeting or conference.

Fabricio Rodrigues presented part
of his research at the Second Interna-
tional Silicon in Agriculture Conference
held in August 2'I '2 in Tsuruoka, Japan.
The title of his oral presentation was
"Silicon induces a chemical defense re-
sponse in rice against blast disease".

Congratulations to Ronald French
and Fabricio Rodrigues, who passed
their qualifying examination in Novem-
ber and December 21 C, respectively.
Both are now Ph.D. candidates in our

Things to think about...

Don't bother about genius. Don't
worry about being clever. Trust to hard
work, perseverance and determination.
And the best motto for the long march
is: "Don't grumble. Plug on!". (Frederick

When your work speaks for itself,
don't interrupt. (Henry Kaiser)

What's money?. A man is a success
if he gets up in the morning and gets to
bed at night, and in between he does
what he wants to. (Bob Dylan)

Don't tell me how hard you work.
Tell me how much you get done. (ames

There are two things needed in
these days; first, for rich men to find out
how poor men live; second, for poor
men to know how rich men work. (E.

Submitted by Fabricio Rodrigues

Chili Cookoff 2003

On Monday, January 27,
2003, the USPS Plant Pa-
thology Staff will hold its
15th Annual Chili Cookoff
The event will take place in Rooms
1304-1308, Fifield Hall. At a bargain
cost, attendees will have the time of their
life sampling chili con came (meat), chili
sans care (vegetarian), as well as an
exotic chili selection. In the past several
dozen participants from inside and out-
side of our department have cooked up
exquisite and original batches of home-
made chili. Those who participate in the
event by cooking up a batch of their

own chili will participate in a friendly-
yet-difficult-to-win competition from
each of the categories. Proceeds from
the 15th Annual Chili Cookoff will bene-
fit the Departmental Reading
Room/Plant Pathology Library. To do-
nate a batch of your own chili, please
sign up at the Plant Pathology Front
Office in Room 1453, Fifield Hall.


The PLP News staff would like to
congratulate the following people for
their recent accomplishments and

F.A. Wood Award for Outstanding
Graduate Student:

Fabricio Avila Rodrigues
Wayne Jurick

G.F. Weber Award for Outstanding
Undergraduate Student:

Brandy Williams

Departmental USPS Awards:

Research: Ulla Benny
Teaching: Dana LeCuyer
Extension: Chuck Semer

New Plant Disease is reported

Whitney Elmore, Mark Gooch, and
Dr. Carol Stiles are reporting the first
incidence of take-all root rot (Gaeuman-
nomyces graminis var. graminis) on seashore
paspalum in the United States. Seashore
paspalum has recently become popular
on golf courses as well as home lawns in
Florida, thus any incidence of newly
reported disease is of great importance
to both the turfgrass community and
sod producers in Florida. Dr. Laurie
Trenholm (Environmental Horticulture
Dept.) submitted the sample, taken from
a home lawn in Hemando County, Flor-
ida, to the Plant Disease Clinic in Sep-
tember 2001. Gaeumannomyces graminis
var. graminis is an ectotrophic, root-

infecting fungus which produces brown-
black runner hyphae and dark, deeply
lobed hyphopodia along stolons and
roots of infected plants. Mark Gooch
isolated the fungus from the original
sample, which later formed hyphopodia,
perithecia and ascospores in culture. He
gave the isolate to Dr. Carol Stiles, who
was interim director of the Plant Disease
Clinic at the time. Whitney later used
this isolate to inoculate roots of St. Au-
gustinegrass and bermudagrass varieties,
as well as 'Sea Isle 1' seashore paspalum.
Whitney and Dr. Stiles found the isolate
of G. graminis var. gramin/s to be patho-
genic on all the turfgrasses tested, and
detrimental to seashore paspalum, caus-
ing take-all root rot. This was the first
report of G. graminis var. graminis on sea-
shore paspalum in the U.S. These find-
ings resulted in a Plant Disease Note,
which will be published by early 2003.

International Collaboration

Pete Timmer, CREC, has estab-
lished a project in SAo Paulo, Brazil, to
investigate foliar fungal diseases foreign
to Florida. The program is being con-
ducted at the Instituto Biol6gico in co-
operation with the UNIEMP Institute.
Natalia Peres, who completed her doc-
toral degree with Pete's supervision at
SAo Paulo State University in Botucatu
in July, is Project Manager for the pro-
gram. The research program will em-
phasize investigation of the risks of
movement of black spot and sweet scab,
as well as control of postbloom fruit
drop and Alternaria brown spot. Juan
Pedro Agostini of INTA, Montecarlo,
Misiones and former UF student, will
conduct research on some aspects of
black spot project.
Pete Timmer, CREC, has estab-
lished a project on scab diseases of citrus
with J. W. Hyun, of the Korean Rural
Development of Jeju Island. Hyun vis-
ited Lake Alfred for a month in August
and Pete spent a week in Korea in Oc-
tober. Hyun will spend 6 months at
CREC in 2003 investigating the infec-
tion process, the basis of pathogenicity,

and pathotypes of Elsinoe spp. K. R.
Chung, CREC, will cooperate on the

John R. Edwardson


Dr. John R. Edwardson, Emeritus
Professor in the University of Florida's
Agronomy Department, died Friday
August 9 following an extended illness.
He was 79. Dr. Edwardson was bom in
Kansas City MO and served as Staff
Sergeant in the U.S. Army during World
War II. He was in the Battle of Huert-
gen Forest and received both the Purple
Heart and the Bronze Star. He received
his BS degree and MS degrees in Agron-
omy from Texas A&M University,
where his interests in cytoplasmic male
sterility were kindled. After graduation in
1949, he entered Harvard University,
were he was a teaching assistant and a
research fellow. Dr. Edwardson received
his Ph.D. degree in biology in 1954 from
Harvard working on fertility restoration
in male sterile com. He joined the
Department of Agronomy at the
University of Florida as an assistant
professor and was promoted to associate
professor in 1960 and professor in 1966.
He retired in April 1997.
Although his formal training was in
agronomy and genetics, Dr. Edwardson
made outstanding contributions to the
knowledge of plant viruses. His research
on cytoplasmically inherited male steril-
ity led to cytological investigations of
inclusions induced by viruses in different
groups, particularly the Potyviridae, the
largest and most economically signifi-
cant group of plant viruses. Dr. Ed-
wardson and his colleagues developed
three-dimensional concepts for potyvi-
rus cylindrical ("pinwheel") inclusions
and pioneered the concept, now gener-
ally accepted, that all viruses that in-
duced such inclusions are members of
the potyvirus group. Ultimately, the ex-
emplary teamwork of Dr. Edwardson
and his colleagues led to the purification
and molecular characterization of these

cylindrical inclusions, to the develop-
ment of antisera specific to their pro-
teins, and to their use as valuable diag-
nostic targets.
During his career, Dr. Edwardson
authored 129 publications, two of which
were cited as landmarks in plant virol-
ogy. His publications include Some
Properties of the Potato Virus Y Group,
the CRC Handbook of Viruses Infecting
Legumes, and Light and Electron Mi-
croscopy of Plant Virus Inclusions.

Dr. Edwardson served on the In-
ternational Committee on Taxonomy of
Viruses for twelve years and effectively
advocated using inclusion bodies for
plant virus classification. Dr. Edward-
son's numerous publications are fre-
quently cited in textbooks on plant vi-
rology and in papers reviewing plant
pathology. Further recognition was re-
ceived in 1992 when he was named a co
recipient, along with R. G. Christie, E.
Hiebert, and D. E. Purcifull, of the Ruth
Allen Award for their innovative and
pioneering research. In addition to being
a co recipient of the Ruth Allen Award,
Dr. Edwardson was a fellow of the
American Association for the Ad-
vancement of Science and the American
Phytopathological Society. Nicotiana X
edwardsonii, a tobacco hybrid widely
used for plant virus research, was devel-
oped by one of his colleagues, S. R.
Christie, and named in his honor.

His wife, Dr. Mickie Newbill
Edwardson, and three children, George,
Elizabeth, and Sarah survive him.
"Doc" will be missed by all who knew
him for his brilliance, humor and unique
outlook on life.

Family Matters

Audrey Rose Zettler was bor Sep-
tember 18, 2' 112, in Jacksonville, Illinois,
the daughter of Lisa Rellinger and Law-
rence Zettler. She was 20 inches long
and weighed 7 pounds, 4 ounces That
makes Bill Z. a grandpa!!!. Audrey Rose's

parents are both on the faculty of Illinois

Sravya R. Keremane, 12 year-old
daughter of Manjunath and Chandrika,
was the winner of the Million Minutes
of Reading in her class level for the last
four years. She scored the highest points
in Accelerated Reading in her school,
Hidden Oak Elementary when she was
in fifth grade. Last year, she participated
in the science fair, won overall first place
in her school, second place in Microbi-
ology at the County and went up to the
semifinals in the Discovery Channel
Young Scientist Challenge. She was one
of the two students who went up to this
level from the Alachua County last year.
Sravya and two of her friends conducted
a two-week summer camp for 4-6 year
old children on Reading, Art and Piano.
22 children attended the camp. A dona-
tion of ^ 21 from the participating par-
ents went to the Children's Home Soci-
ety of Florida. She plays trombone for
the school band. Her hobbies and inter-
ests are Reading, Indian classical dance,
and swimming. Sravya currently studies
in the seventh grade at the Howard
Bishop Middle School, Academy of
Technology and Gifted Studies, Gaines-

Recent Publications

Rodrigues, F. A., Vale, F. X. R.,
Kornd6rfer, G. H., Prabhu, A. S.,
Datnoff, L. E., Oliveira, A. M. A., and
Zambolim, L. 2003. Influence of silicon
on sheath blight of rice in Brazil. Crop
Protection 22:23-29.
Rodrigues, F. A., Carvalho, E. M. and
Vale, F. X. R. 21 "2 Severity of Rhizocto-
nia root rot in beans influenced by lim-
ing, nitrogen sources and rates. Pesquisa
Agropecuaria Brasileira 37:1247-1252.

Blount, A. R., Dankers, H., Momol, M.
T., and Kucharek, T. A. 2I .'2 Severe
dollar spot fungus on bahiagrass in Flor-
ida. Online. Crop Management,
doi:10.1094/CM-21"1 2-0927-01-R

htto:/ /www.lantmanacementnetworork.or/


Funderburk, J., Stavisky, J., Tipping. C.,
Gorbet, D., Momol, M. T. and Berger R.
D. 2I11'2 Infection of Franklniella fusca
(Thysanoptera: Thripidae) in Peanut by
the parasitic nematode Thnipinemafuscum
(Tylenchidae:Allantonematidae). Envi-
ronmental Entomology 1(3):558-563.

Pradhanang, P. M., Momol, M. T.,
Dankers, H., Momol, E. A. and Jones, J.
B. 2I '2 First report of southern wilt
caused by Ralstonia solanacearum on gera-
nium in Florida. Online. Plant Health
Progress doi:10.1094/PHP-2 11I2- 0611-

Blount, A. R,, Pittman, R. N., Smith, B.
A., Morgan, R. N., Dankers, W., Spren-
kel, R. K. and Momol, M.T. 2 '2 First
report of Peanut stunt rinus in perennial
peanut in North Florida and Southern
Gorgia. Plant Disease 86:326.

Argun, N., Momol, M. T., Maden, S.,
Momol, E. A., Reid, C. L. and Burr, T. J.
2I '2 Characterization of Agrobacteium
itis strains isolated from Turkish grape
cultivars in Central Anatolia Region.
Plant Disease 86:162-166.

Pradhanang, P. M. and Momol, M. T.
2001. Survival of Ralstona solanacearum in
soil under irrigated rice culture and
aquatic weeds. Journal of Phytopathol-
ogy 149:707-711.

Xin, J., Beck, H. W., Halsey, L. A.,
Fletcher, J. H., Zazueta, F. S. and Mo-
mol, M. T. 2001. Development of a dis-
tance diagnostic and identification sys-
tem for plant, insect and disease prob-
lems. Applied Engineering in Agricul-
ture 17 (4): 561-565.

Recent Grants

Jones, J. B., Momol, M. T., Pradhanang, P.,
Olson, S. M., Miller, S. A. and Scott, J. W.
Integrated Management of Bacterial Dis-

eases on Tomato. SR-IPM (USDA-
CSREES). 2002-2004.

Mizell, RI F., Knox, G. W., Hewitt, T. D.,
Momol, M. T. and Bolques, A. Organic
Nursery Production: Development and
Demonstration. USDA, Organic Program,

Funderburk, J., Momol, T., Olson, S.,
McPherson, R. and Pappu, H. Reduced-Risk
Tactics for Thrips and Tospovirus on So-
lanaceous Crops. RAMP, (USDA). 2000-

People from our Department
visit Latin America

University of Florida citrus pa-
thologists Ron Brlansky, Richard Lee
and Marty Dekkers of the Citrus Re-
search and Education Center, Lake
Alfred, and Manjunath Keremane, a
UF plant pathologist in Gainesville,
spent two weeks with Ezequiel Rangel
at the Laboratorio de Virologia Vege-
tal, National Institute for Agricultural
Research, or INIA, in Maracay, Vene-
zuela. The visit was part of a T-STAR
grant on the characterization of citrus
leprosis virus and development of di-
agnostic tests. Citrus leprosis is a prob-
lem in the Caribbean and threatens the
United States, although it has not been
found here in the past 20 years. In
Venezuela citrus leprosis was a major
problem in citrus production in the
1990s. The disease has been reported
in Panama. During the first week in
Venezuela the researchers visited citrus
areas where the disease is prevalent.
They took samples for analysis at UF.
They also presented a diagnostic work-
shop to INIA and University of Cen-
tral Venezuela researchers on molecu-
lar and microscopic diagnostics of
plant viruses. Ten researchers and stu-
dents attended. Lee, Brlansky and
Keremane gave presentations on the-
ory of the diagnostic tests, and then all
participants performed practical appli-
cations in the lab.

Dr. Richard Lee visited also Panama
from October 8-13, 2I '2 to evaluate the
project "Identification and Control of
Citrus Pests and Diseases in the
Province of Code" and the feasibility
of a citrus certification program in Pa-
nama considering the presence of lepro-
sis in the one area in the north. People
involved on this project were Magali
Paceco (Agriculture Economist), Felicita
Sousa (Tissue Culture), Carlos Ramos
(Molecular Biologist), Dora Quiros (En-
tomologist); and German Chacin (Inves-
tor). Carlos Ramos, Dora Quiros, and a
fellow entomologist are pictured in the

APS Meeting 2003

The Annual Meeting of the
American Phytopathological Society
will be held August 9-13 in the beauti-
ful queen city of Charlotte, NC. As the
largest city in the Carolinas, Charlotte
offers everything you'd expect from a
city with the friendliness of a small
town. The city boasts a commitment
to linking the "New" and "Old" South
together. No matter what your inter-
ests, there is something for you to do
in Charlotte. If you need more infor-
mation, please visit the APS website at

Debate on Agricultural Bioter-

The Entomological Society of
America (ESA) and the International
Society for Plant Pathology sponsored
a graduate student debate titled "Can
we be prepared for deliberate release
of biological agents against agricul-
ture". The debate was part of the an-
nual Meeting of the ESA held in Ft.
Lauderdale in November 2" 2

Ronald French represented our
department and together with other
entomology and plant pathology
graduate students all around the U.S.,

took the Pro (affirmative) position that
stated "we can be prepared for an at-
tack". This was the very first time that
the ESA was dealing with such a topic.
Drs. Wisler and Charudattan were also
present at the debate. Although there
were no winners or losers, the affirma-
tive side received more votes from the
attendees who though they did a better
job at addressing their position.

The Biannual Meeting of die
Florida Phytopathological So-
ciety (FPS) 2003

The biannual meeting of the Florida
Phytopathological Society is tentatively
scheduled for May 5-7, 2003 in Ft.
Pierce. Stay turned for upcoming infor-
mation or contact Pete Timmer (Presi-
dent), Jeff B. Jones (Vice President),
Lawrence E. Datmoff (Secretary), or
Tim Gottwald for information.

For those of you who missed the
last meeting in 2001, here is a brief
summary of what took place.
Nearly 120 registered members of
the FPS met recently at the CREC in
Lake Alfred to discuss plant pathological
topics of great importance to Florida.
Keynote speakers included Gail Wisler,
Chairperson of UF's Dept. of Plant Pa-
thology, Tim Schubert, Dept. Head,
Plant Pathology, Div. of Plant Industry,
and Blanca Landa, del Castillo, a visiting
Fulbright Scholar from Spain. Local
arrangements were capably handled by
Pete Timmer (Lake Alfred, CREC), the
current FPS President. Richard Raid
(Belle Glade, EREC), Immediate-Past
President, organized the program.,
which consisted of over 60 scientific
presentations. Among those presenting,
Camilla Yandoc, Ronald French-Monar,
and Matthew Brecht won first, second
and third place awards, respectively, in
the Graduate Student Paper Competi-
tion. Distinguished Service Awards
were presented to Dr. George N. Agrios
for his leadership in first establishing
the FPS in 1989, and to Dr. Tom Ku-
charek for his outstanding leadership

and dedication to the FPS over the
years. Jeff Jones, FPS Vice President,
will work with Erin Rosskopf (USDA-
ARS Ft. Pierce) in organizing the next
Biennial Meeting of the FPS to be held
in Ft. Pierce in May, 2003.

Friday Coffee Break Schedule
Spring 2003

3 Everyone .
10 Kucharek & Song 'W
17 Pring & Chourey
24 PD Clinic, Zettler, & EM Lab
31 Bartz, Berger, & Stiles
7 Charudattan & Hiebert
14 Gabriel &Jones
21 Office Staff
28 Kimbrough & Rollins
7 Kucharek & Song
14 Spring Break
21 Pring & Chourey
28 PD Clinic, Zettler, & EM Lab
4 Bartz, Berger, & Stiles
11 Charudattan & Hiebert
18 Gabriel &Jones
25 Office Staff

Facts on North Carolina

Admission to Statehood: November
21, 1789.
Bird: Cardinal.
Flower: Dogwood.
Tree: Pinus
Area: 53,821 square miles (28th in U.S.A)
Border States: Georgia, South Carolina.
Tennessee, and Virginia.

Agriculture: Poultry and eggs, tobacco,
hogs, milk, nursery stock, cattle, and
Industry: Tobacco products, textile
goods, chemical products, electric
equipment, machinery, and tourism.
Governor: Michael F. Easley (D)
Lowest point: Atlantic coast.
Motto: To be, rather than to seem.
Nickname: Old North State.
Origin of State's Name: From
"Carolus", Latin word for Charles and
named after England's King Charles I.
Population: 8,049,313.
Topography: Coastal plains and tidewa-
ter in two-fifths of state, extending to
the fall line of the rivers; piedmont pla-
teau, another two-fifths, of gentle to
rugged hills; southern Appalachian
Mountains contain Blue Ridge and
Great Smokey Mountains.
Flag: That the flag of North Carolina
shall consist of a blue union, containing
in the center thereof a white star with
the letter N in gilt on the left and the
letter C in gilt on the right of said star,
the circle containing the same to be one-
third the width of the union. The fly of
the flag shall consist of two equally pro-
portioned bars; the upper bar to be red,
the lower bar to be white; that the length
of the bars horizontally shall be equal to
the perpendicular length of the union,
and the total length of the flag shall be
one-third more than its width. That
above the star in the center of the union
there shall be a gilt scroll in semi-circular
form, containing in black letters this
inscription "May 20th, 1775," and that
below the star there shall be a similar
scroll containing in black letters the in-
scription: "April 12th, 1776."

Plant Pathology Graduate
Student Speaker 2002

During Fall 21 "'2, the Plant Pa-
thology Graduate Student Speaker for
2Il' visited our department and de-
lighted us with TWO seminars. Dr.
Steve Goodwin, Adjunct Associate Pro-
fessor USDA-ARS, Department of Bot-

any and Plant Pathology, Purdue Uni-
versity, gave his first seminar during the
departmental fall seminar series on
Tuesday, November 12 at 4:05 p.m. His
seminar was titled I ,.lri, .i I- Rela-
tionships and Molecular Genetics of the
Septoria Pathogens from Wheat and
Prior to the seminar, Dr. Goodwin
spent most of the day individually meet-
ing with several of our faculty. As with
past student speakers, Dr. Goodwin had
lunch with out student population.
Right after seminar, Dr. Goodwin had
the chance to interact with even more
members of our department at On the
Border Mexican Cafe.

On Wednesday, Dr. Goodwin gave
his second seminar tiled "Historical,
Biological and Genetic Evidence Sup-
ports a Mexican Origin for Phytophthora
infestans". This seminar represents much
of the work he did in Dr. Bill Fry's Lab
at Cornell University as a post-doctoral
associate during the early 1990's and for
which he is world-renowned. Following
the seminar Dr. Goodwin had a brief
tour of our campus and even got a
chance to be just a few feet away from a
5-6 foot alligator that was "resting" in
the sands of Lake Alice.

If you would like to contribute an article,
a short piece, or a suggestion, please
mail us at:

PLP News
1453 Fifield Hall
P.O. Box 110680, Gainesville, FL 32611

News Team and Collaborators
for Summer/Fall 2002

Fabricio Rodrigues (Editor)
Ronald French (co-Editor)
Leandra Knight
Gail Wisler
F. W. "Bill" Zettler

The opinions expressed in this newsletter are not
necessarily those of the PLPNews '

PLP News is available online at

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