Biohistory: plants, plagues, and...
 Faculty, staff, and students
 General announcements
 Important dates
 Former graduate students
 Did you know that...
 Cool web sites
 Recent publications

Group Title: PLP news
Title: PLP news. Volume 3, Issue 3. March, 1999.
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00067320/00003
 Material Information
Title: PLP news. Volume 3, Issue 3. March, 1999.
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: March, 1999
Funding: Florida Historical Agriculture and Rural Life
 Record Information
Bibliographic ID: UF00067320
Volume ID: VID00003
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
    Biohistory: plants, plagues, and people raison d'etre
        Page 1
        Page 2
    Faculty, staff, and students
        Page 3
    General announcements
        Page 4
    Important dates
        Page 5
    Former graduate students
        Page 6
    Did you know that...
        Page 7
    Cool web sites
        Page 8
    Recent publications
        Page 9
Full Text


* New members of the Newsletter
* Who is who in Plant Pathology

* New section on Leisure and Culture
* New section on Seminars in other departments


The Newsletter of
the Plant 1 '
Volume 3 Issue 3
March 1999

Biohistory: Plants, Plagues, and People

Raison d'6tre

by Dr:. E W Z Zettler

This text,
co-authored by
h mCarlye Baker,
was specifically
written for stu-
b dents enrolled
in PLP 2000
(Plants, Plagues,
and People). As stated in the preface, the
book derives its name "biohistory" from
the manner in which it integrates biology
with history. In doing so, it combines the
basic principles of such scientific fields as
biochemistry, genetics, botany, plant and
human medicine, archaeology, and ecol-
ogy into a coherent historical and bio-
logical whole. Photosynthetic organisms
are particularly emphasized because, as
the ultimate providers of our food, the
oxygen we breathe, and even our fossil
fuels, they provide the foundations for all
life on Earth as we humans know it --
biologically and historically.
Originally known as Plant Dis-
eases and Human Affairs, PLP 2000 was
designed to accommodate the need for
lower division courses in IFAS. There are
no prerequisites for this 3-credit course,
and it is designed for students that are
not majoring in biology and might oth-

erwise have no exposure to classes in the
College of Agriculture. (According to the
Chronicle of Higher Education, only
about 1.4".. of college freshmen nation-
wide enroll in Agriculture.) The first class
was taught during the Spring Semester of
1990 to a total of 7 students. Two years
later, Carlye joined me. PLP 2000 is now
being offered twice a year (Spring and
Summer B) with enrollments per class
ranging from 100 to 175 students per
semester. In addition, Carlye will be of-
fering this as an IFAS Distance-learning
class on the Intemet this Fall. PLP 2000
is listed in the undergraduate catalogue as
meeting General Education requirements
for both Biology (B) and Humanities (H).
When I first taught this course
nine years ago, I had visions of using a
simplified plant pathology text such as
the one by Gail Schuman, entitled Plant
Diseases: Their Biology and Social Impact,
which appeared in print in 1991. By then,
however, it was painfully obvious that a
traditional approach in teaching plant
pathology would not attract the high en-
rollments necessary to justify my teaching
a 2000-level course. Comell University's
George Hudler and Entomology's Don
Hall, meanwhile, were (and still are)

teaching to classrooms packed with sev-
eral hundred students in their respective
courses (Magical Mushrooms, Mischie-
vous Molds and The Insects) but their
subject matter is much more appealing to
lay audiences than ours. (Exploding wa-
termelons can pique curiosity -- but not
for long, and most students find the Byz-
antine life cycle of the wheat rust fungus
stupefyingly boring.) Making the situa-
tion even worse, of course, is that virtu-
ally none of the students enrolled in PLP
2000 have ever had botany, a prerequisite
for PLP 3002 (Fundamentals of Plant
Pathology), nor do many have any first-
hand experience in agriculture. Obvi-
ously, to survive, PLP 2000 had to take a
different approach.
Ernest Hiebert helped turn
things around (and inadvertently planted
the seeds for our book) by loaning me a
copy of Famine on the Wind. This fasci-
nating work was written by a pair of Ca-
nadian authors, G. L. Carefoot and E. R.
Sprott, who presented a sociologically
oriented overview of some of the more
spectacular diseases of plants. Although
this book, published in 1967 and long
out of print, failed to address the prob-
lem of teaching plant p arli 1. -- to an


audience with little or no practical
knowledge of botany or agriculture, it
provided a unique insight as to how we
might bridge the great chasm that exists
between our discipline and the outside
A second factor that prompted
Carlye and I to write such a book was the
apparent need, as expressed to us by one
of the textbook editors of the Prentice-
Hall Publishing Company, for more pal-
atable biology texts for non-majors. Ac-
cording to him, most conventional biol-
ogy texts now on the market were so
detailed (and expensive) that they were
deterring students from getting into this
field, especially if their training in the
high schools was deficient. Market re-
search showed a potential demand for
more user friendly, sociologically-
oriented biology texts. For example,
Robert Hazen, a professor at the Came-
gie Institute and co-author of the article,
Science Matters: Achieving Scientific Iteracy,
described currently used biology books
as being "daunting and boring" and sug-
gested that they actually impede many
students from acquiring the "knowledge
they will someday need to combat dis-
ease, create new materials and shape our
environment in marvelous ways."
Another problem is that most
biology texts give scant attention to the
subject of disease, and when the subject
is broached, it is generally in reference to
those bedeviling humans, rather than
plants. (Three of 12 biology books we
surveyed in 1995 did not even list "dis-
ease" in their indexes.) To be sure, as
Randall Rowe put it in Phytopathology
News, "There is a general lack of appre-
ciation of plant pathology by the public."
Part of this problem, of course,
is that plants are not as charismatic as
animals, nor are they cuddly or as fright-
ening. According to Lee Campbell, also
publishing in Phytopathology News,
"Plants are perceived as being more
boring than other subjects." That being
the case, "[Our] challenge is to divert
even the smallest amount of enthusiasm


of our future scientists and leaders from
the world of dinosaurs and other charis-
matic megafauna to the world of plants."
Our neglect of plants and their diseases is
a problem that's been around for a long
time. According to the famed Nine-
teenth-Century entomologist, J. Henri

SI .. -... celebrates the battlefields where-
upon we meet our death, but scorns to speak of
the plowed field whereby we thrive; it knows the
names of the king's bastards, but cannot tell us
the origin of wheat. That is the way of human

Clearly, plant pathology de-
serves better recognition, especially in
view of its importance now and in the
past. The role that plant diseases played
in causing the Irish famine, forcing the
English to drink tea, enticing the ancient
Romans to create gods, and instigating
the Salem witch trials, are well known by
all plant pathologists. But there's more --
a lot more. The book by Mary Matossian,
entitled Poisons of the Past: Molds, Epidemics,
and History, published in 1989, suggests
just how under appreciated our field is.
She points out, for example, that the er-
got-induced Salem witch trials, much
ballyhooed in our literature and history,
was by no means an isolated event. In-
deed, ergotism plagued Europe for cen-
tures and, according to her, could have
played a major role in the French Revo-
lution. She also presents a credible argu-
ment that mycotoxins in granaries may
have contributed greatly to the bubonic
plague epidemics of the Fourteenth
Century, when one-third of Europe's
population perished.
Our book appears to be unlike
anything else on the market. Science re-
volves around novel ideas and ap-
proaches, of course, but in the real world
of the textbook market, we soon learned
that it is the number of copies sold that
counts -- period. Chapters of our text
were submitted to the Prentice-Hall
Company and reviewed. The initial re-

suits were extremely encouraging, but in
the end, our book was considered too
unusual, and thus risky, to warrant Pren-
tice-Hall pumping in the requisite many
thousands of dollars needed to develop,
illustrate, advertise, and promote it. In-
stead, we were referred to the branch of
the company dealing with custom pub-
lishing. Such books are promoted, of
course, but the investment is far lower.
The "Preliminary Edition" of our book
hit the stands on January 1999, and the
"First Edition" is scheduled for the
Spring Semester of 2000. If sales are
good, other additions may be forthcom-
The book has 18 chapters,
which are arranged chronologically
starting with the "Big Bang" phenome-
non that occurred 15 billion years ago
and ending with a sneak preview of our
future. It consists of three main parts.
The first part (Chapters 1-5) deals with
the origins of our planet, how life began,
and how prokaryotes and uni- and mul-

The second part (Chapters 6-11)
deals with the trials and tribulations of
plants, fungi, invertebrates, and verte-
brates as they evolved to survive on land.
The remaining seven chapters focus on
human population dynamics and how
demographics were (and are) affected by
the many beneficial and harmful organ-
isms that share our little planet with us.
This part, which begins with the origins
of agriculture, ends with a prognosis of
the future of humankind. It is here where
the importance of our own discipline,
plant pathology, becomes most evident.
Although it is not a plant pa-
thology text per se, our book brings out
how important plant pathogens have
been in shaping the world as we know it.
For example, we discuss the importance

of crop rotation for disease control,
rather than simply referring to the resto-
ration of soil "fertility" or avoiding soil
"exhaustion." Archaeologists today are
finding out that many great civilizations,
such as the Classic Maya and the Roman
civilizations, declined primarily because
their farmers were unable to produce
enough food to feed everyone, a situation
which led to civil unrest and chaos. In-
deed, in the First Century BC, the Ro-
man scholar Columella wrote of "ex-
haustion of the soil" as a major factor in
the decline of Greco-Roman agriculture.
Of course, having no idea that microbes
caused disease in plants, the ancients
were in no position to control them. PLP
2000 students, at least, are aware that
plant pathogens exist and have a good
appreciation of how devastating they can
be. Thus, in our own unorthodox way,
we believe we're making a contribution
to plant irl. .1. ._ --. Lee Campbell, one of
the seven members of our Department's
CSREES Review Team, lauded the in-
struction of PLP 2000 and Jim Kim-
brough's PLP 2060 course (Molds, Mil-
dews, Mushrooms, and Men) and
pointed out that they exposed hundreds
of students who otherwise would not
have heard or read about plant pathology
while attending the University of Florida.
Teaching PLP 2000 and writing
the text has been quite a ride, but it's
been fun. Now that a preliminary version
of the text has been completed, we face
yet additional challenges -- from com-
petitors from within and outside of De-
partment, who teach similar non-majors
courses. Jim Kimbrough, of course, is
our chief nemesis and will do anything to
get students enrolled in his class -- in-
cluding sauteing mushrooms for them
and passing out samples of blue cheese
and vintage wines. (Alas, he's also a su-
perb teacher.) Other popular science
courses for non-majors in other depart-
ments include The Insects (ENY 2C41, ,
Seeds of Change (AGG 2362), Plants in
Human Affairs (BOT 2800), Man's Food
(FOS 2I 1'I !, Growing Fruit for Fun and


Profit (FRC 1010), Vegetable Gardening
(VEC N"2, and Plants, Gardening, and
You (ORH 1030). Such daunting com-
petition notwithstanding, we are optimis-
tic about the future of PLP 2000 (and
PLP 2060) and believe both courses
serve our Department and the discipline
of plant pathology well.

Faculty, staff, and students

*Gail Harris, from the main
office, will receive on April
28t the USPS Cleri-
cal/Office Support Superior
Accomplishment Award at
the University of Florida.

*Undergraduate student Jessica Roberts
received two awards in the IFAS Schol-
arship and Leadership Convocation, on
March 26t. She received the Florida Ru-
ral Rehabilitation Corporation Scholar-
ship and the G.F. Weber Scholarship.

*Graduate students Gustavo Astua-
Monge and Robert Kemerait Jr. also
represented our department in the same
event, receiving the F.A. Wood Scholar-
Congratulations for your good

Theses and Dissertations defended:
David Benscher, a native of Long Is-
land, New York, received his Bachelors
of Science degree from the State Univer-
sity of New York in Forest Biology.
David defended his Master of Science
thesis, entitled "Molecular and Biological
Characterization of Potyviruses in Passi-
flora Species", on March 17, 1999. David
started on his Master's in 1994 and fin-
ished his research in July 1996. His re-
search was funded by CBAG, and his
research committee consisted of three
members: Drs. Chuck Niblett, David
Mitchell, and Richard Lee from Lake
Alfred. Immediately following his re-
search, David got a job as a Senior Bio-
logical Scientist working for Dr. Randy

Ploetz in Homestead, Florida. There,
David worked on Fusarium wilt on ba-
nana for approximately two and a half
years. Then David moved to Ithaca, New
York to do research for Comell Univer-
sity. David currently works with small
grains and using marker-assisted selec-
tion to enhance crop quality.

Sankaranarayanaiyer Chandramohan
is native of Tamilnadu, India. He re-
ceived his Bachelor of Science degree in
Agriculture from Annamalai University,
and one of his Master of Science degrees
in Agricultural Microbiology from
Tamilnadu Agricultural University. He
then pursued a Master's in Molecular
Biology at Vrije Universiteit in Brussels,
Belgium. Chandra defended his disserta-
tion, entitled "Multiple-pathogen strategy
for bioherbicidal control of several
weeds", on March 5, 1999. He began his
Ph.D. study in the fall of 1994. Chandra's
research committee was composed of
Drs. Charudattan, Singh, Berger, Sonoda,
and Preston. Dr. Chandramohan plans to
pursue a career in the United States fo-
cusing on research and development of
microbial biotechnology for weeds and
plant disease management

Daniela Lopes is a native of Brazil.
Daniela obtained her Bachelor's degree
in Agronomy and her Master of Science
in Plant P irlh. .1. ._-, both at the University
of SAo Paulo, Brazil. Daniela came to UF
in the fall of 1994 to pursue a Ph.D. de-
gree in Plant Pathology under the direc-
tion of Dr. Richard Berger. She defended
her dissertation entitled "Photosynthetic
Competence of Bean Leaves with Rusts
and Anthracnose", on March 11, 1999.
Her research committee was composed
of Dr. Berger, Dr. Kimbrough, Dr.
Mitchell, and Dr. Boote. Dr Lopes plans
to get a post-doc position at a university
and eventually wants to teach and do

Gustavo Astua-Monge is a native of
Costa Rica. He obtained his Bachelor's

degree in Agronomy at the University of
Costa Rica, in 1991. From 1991 to 1993,
he worked as a Teaching Assistant and
Junior Research Scientist at the Plant
Pathology Laboratory of the University
of Costa Rica. In 1993, he obtained a
fellowship from LASPAU/ FUL-
BRIGHT and came to the United States
to pursue a Master of Science degree in
Plant Pathology at the University of
Florida, which was completed in 1995.
Upon graduation, Gustavo was granted
an assistantship to continue his graduate
studies towards a Doctor of Philosophy
degree in our department, under the
guidance of Drs. Stall and Jeff Jones (ad-
visors), and Dr. Michael Davis (co-
advisor). Other members of his research
committee were Drs. Hiebert, Kistler,
and Vallejos. Gustavo defended his dis-
sertation, entitled "Genetic characteriza-
tion of plant-pathogen interactions be-
tween Xanthomonas campestris pv. vesicato-
ria and tomato", on March 19, 1999.
Upon completion of his Ph.D. degree,
Gustavo will be joining Dr. Eduardo
Vallejos's program as a postdoctoral fel-
Congratulations to all of you, we areproud of
you and are glad thatyou present the
DepartmentofPlantP '...:. atthe
University of Florida!

"Survivors" of Qualifying Examina-
Alvaro Urefia and Francisco Ochoa
completed their Qualifying Exams dur-
ing the month of March.
Congratulations to both ofyou!!

General announcements

SThe University Senate approved the
title of Doctor in Plant Medicine.

A new station wagon was ordered to
replace the one that we lost last year.


* A request was submitted for the new
faculty member to replace Dr. Kistler,
who is leaving us.

* "Alternative Career Paths for Graduate
Students" is the fourth and final seminar
in the Professional Development Semi-
nar Series co-sponsored by the Graduate
School and Named Presidential Fellows.
It will be held on March
31st at 12:00-1:30 p.m. -'
in JWRU 286. There is o
no registration and
pizza will be served
following the seminar as part of Gradu-
ate Student Appreciation Week. This
seminar will highlight non-traditional
career options appropriate for students in
master's or doctoral degree programs.
The featured panelists will be Julie Dodd,
Professor of Journalism (academia); Rick
Mills, Alachua County government) ;
Dan Evans, Caribbean Conservation
Corporation (nonprofit); and Steven Dee,
Andersen Consulting (business). Each
panel member will speak for about 15
minutes and the time remaining will be
open for Q&A. Flyers will be mailed to
departments but it is also available in
PDF on the student Web page. Hand-
outs from the last seminar on grant
writing are also available online. If you
have any questions, you can contact Ms.
Linda Vivian at 392-8525.

* The 1999 Graduate Student Forum will
be held on the second floor of the Reitz
Union on Friday, April 2, 1999, from 8
a.m. to 6 p.m.

* The University of Florida, IFAS, Dept.
of Microbiology and Cell Sciences, Bur-
roughs Wellcome, and American Society
for Microbiology present a seminar se-
ries/workshop on Bioinformatics, which
will be held from April 5 to 9, 1999. Pro-
f-essor Kenneth E. Rudd,
from the Dept. of Bio-
S .'- chem. & Mol. Biol., Univ.

of Miami School of Medicine,
will be giving the lectures and

teaching the course. The schedule for the
program is:
- April 5, Monday, 4 to 5 p.m.: "Tar-
geted functional genomics and pro-
teomics of Escherichia col: post-
sequence gene characterization on a
moderate scale."
- April 6, Tuesday, 8 to 9 p.m.: !-
crobial genome sequences: gold
mines or land mines?"
- April 7 to April 9, Wednesday to
Friday, 9 a.m. noon: Hands-on
Bioinformatics Workshop.
- April 7 to April 9, 1:30 p.m. to 3
p.m.: Group discussions.
All of the lectures will be held on Rm.
1044, Microbiol. & Cell Sc. Bldg. (# 981)
Museum Rd.
The workshop will be held at the College
of Veterinary Medicine, in the Veterinary
Academic Building, 2015 SW 16th Ave.,
Rm. V1-110, Library Reading Rm. Com-
puter Lab. Due to limited space, early
registration for the workshop is required.
For registration please contact Linda Par-
sons at 392.1906 or email: linda@ mi-

* On April 14th, the department is ex-
pecting 3 professors and 8 graduate stu-
dents from the University of Bonn,
Germany. Briefs talks about their re-
search will be given by the visiting
graduate students and by 6 or 8 graduate
students from this department.

SThe Sixth Biennial Meeting of the
Florida Phytopathological Society will be
held in Fifield Hall all day on May 4 and
in the morning of May 5, 1999. Sessions
will involve Bacteriology, Mycology, Vi-
rology, Soil-Bome Diseases, Foliar Dis-
eases, New and Resurgent Diseases,
Molecular Plant Pathology and Graduate
Paper Competition Session. If you are
interested in participating in the Graduate
Student Competition, you can send an
abstract by April 16, 1999, to Dr. Tim

Schubert, Division of Plant Industry,
Campus Mail. If you have further ques-
tions, you can contact him at 372.3505 or
Dr. Richard Raid at 561.9"..'.1.21 ext.
147 or suncom 250.1147. The size and
format of the abstracts are the same of
those for the APS meetings.

SIf you are interested in participating in
the PMCB Workshop, which will be held
on Friday and Saturday, May 7th and 8th,
1999, you will need to send your ab-
stracts by April 16th. Abstracts should
include a tide in all capital letters, the
author/authors name(s), presenter's
name, and be not greater than 150 words,
single-spaced, and in 10 pt. Times New
Roman font. Send your abstracts to:
PMCB Workshop Committee, c/o Pro-
gram Assistant, PMCB Program, P.O.
Box 110690, University of Florida,
Gainesville, FL, 32611. Only one ab-
stract on disk or emailed to PMCB will
be accepted. Do not fax your abstract!

* For those who will be taking their
Qualifying Exams:
Gail Harris reminds us that when the
Graduate School receives notice that a
student has taken and passed his or her
Qualifying Exam (Admission to Candi-
dacy), the student's registration is
changed from PLP 7979 to PLP 7980.
The student's classification is also
changed from 8AG to 9AG automati-
cally. She asks all of the students to let
her know as soon as we know that we
are going to qualify during a semester so
that she can make a note to change our
registration and make sure that we are
added to the correct grade sheet.

Important dates

April 2nd, Friday: Last day to submit
signed Master's theses to the Graduate
School, 168 Grinter Hall.
April 21st, Wednesday: All classes end.
April 22nd-24th, Thursday- Friday: Ex-
amination reading days-no classes.


April 24t-30th, Thursday-Friday: Final
April 26th, Monday: Last day to submit
signed original bound dissertations, ab-
stracts and final examination reports and
signed original bound theses and ab-
stracts to the Editorial Office, 168
Grinter Hall.
May 1st, Saturday:

Friday's coffee break

The labs in charge of ~ -
the coffee break for im
the month of April l

April 2nd Dr. Gabriel's lab
April 9th Dr. Jones's lab
April 16f Dr. Kistler's lab
April 23rd Drs. Kimbrough's and
Kucharek's labs
April 30h Drs. Pring's and Chourey's

Remember that on April 30th we will be
celebrating the "birthdays of the month".

Birthdays of the month

Francisco Ochoa
Dean Gabriel
Adrian Berry
R. Charudattan
Jay Gideon
Yanming Yang
Christina Fulford
Kimberly Storch
Jennifer Klein


Happy birthday to you all!!

Seminars that might be
worth checking out

(Thursdays 4 p.m., G086 McCarty)

*April 1: Nadia Douglas. Nitrogen Up-
take by Plants and Movement in Soil in
'Tifton 85' Bermudagrass Hay Fields. MS
research results.
*April 8: Todd Neel. The Ecology of an
Invasive Wetland Species, Solanum tampi
cense. MS research results.

Entomology and Nematology
(Thursdays 3:30 p.m., Room


*April 1: Dr. Betty Forster, Fort Lauder-
dale REC. Behavioral and Morphome-
tric Analysis of Polymorphism in the
Florida Harvester Ant.
*April 8: Dr. Marta Wayne, Zoology
Dept., UF. Evolutionary Quantitative
Genetics of Ovariole Number in Droso-
phila melanogaster.
*April 15: Dr. Mark Benedict, CDC.
Genetic and Molecular Studies of Malaria
Vectors at CDC.

Horticultural Sciences
(Mvondays 4:05 p.m., 2316 Fifield)

*April 5: Melanie Tremelling. Nitrate and
Iron Reductase Activity in Three Vacin-
ium Species.
*April 12: Elio Jovovich. Effect of Plant
Density and Shoot Pruning on Fruit
Yield and Quality of Greenhouse Sweet

*April 19: Wendy Wilber. Effect of Ni-
trogen Fertilizer on Growth and Fruiting
of Oriental Persimmon.

Microbiology and Cell Science
(Mondays 4 p.m., 1042 MCSB)

*April 5: Dr. Kenneth Rudd, U. of Mi-
ami. Targeted Functional Genomics and
Proteomics of Escherihia col: Post-
Sequence Gene Characterization on a
Moderate Scale.
*April 19: Dr. John Paul, U. of South
Florida. Lysogeny and other Microbial
Gene Transfer Systems in the Marine

Former graduate students

Ms. Tammy Plyler, a native of
Statesville, North Carolina, obtained her
Bachelor's degree in Biology (major) and
Music (minor) at Wake Forest University,
N.C., in 1995. Upon graduation, Tammy
came to Gainesville in order to pursue a
Masters of Science degree in Plant Pa-
thology. Here, she worked under the
guidance of Dr. Corby Kister, and in
1997, she defended her thesis entitled:
"Genetic diversity studies on Fusaium
oxysporum f sp. canardensis and the devel-
opment of a polymerase chain reaction
technique for its detection". The high
quality of her work was recognized and
her thesis was chosen as the best thesis
of IFAS in that year!
Only two weeks after her
graduation, Tammy started her new job
as a Biological Scientist in Dr. Eduardo
Vallejos's lab, at the Horticultural Sci-
ences Department of UF. Her interests
are still related to Plant Pathology and
Genetics. She and others in her lab are
trying to clone the "I" gene of Phaseolus
vulgarj, which confers resistance to bean
common mosaic virus, through chromo-
some walking.


When asked about the future,
Tammy mentions that at this point she is
uncertain about going back to graduate
school, since she is happy with her job
with Dr. Vallejos. Besides, she adds that
she still wants to get some more lab ex-
perience in order to be able to narrow
down her interests for the future. In ad-
dition, she is now concerned about some
major changes in her life. She is going to
get married to a Ph.D. student of our
department, Bob Harveson, this coming
June, and the preparations for the wed-
ding and the expectations about the mar-
ried life have been very exciting and time
Tammy has always been a very
active person. During her years in our
department she was vice president of the
graduate students for the school year of
1996-1997, and a member of the PLP
News in its first year of existence. She
has also been involved in other activities.
Tammy is a member of the Genetics
Committee of the APS, and will be the
co-chair in a Symposium/Colloquium on
Plant Disease Resistance, which will be
held in the APS meeting of the year 2000
in New Orleans.

Besides working with the
face plant pathology-genetics
spending time with her fiance
Tammy enjoys playing the piano,
she has studied for almost
14 years. As a new hobby, INS
she has been learning how
to play the guitar since last
December. Tammy also is
a sports-lover, and al-


though she comments

that basketball is her favorite sport to
watch, she used to play softball, repre-
senting our department in competitions
within UF.
If you want to know more
about Tammy's work in her Masters, you
can check the May's issue of Phytopa-
thology, which will publish part of her
thesis's results. Another manuscript that
she prepared was already submitted to

the journal Plant Pathology, and is being
If you want to contact Tammy,
you can do so through the e-mail ad-
dress: tpl,. .. Ii i if .. ...,1,

Who is Who in our Department

Who IS In...

The Front Office Staff
We sometimes forget what
keeps everything running smoothly so we
can get our work done. Well, this month
our who's who interview focuses on the
women who keep the department or-
ganized and who help us with our ques-
tions, the ladies who just keep our de-
partment together in general- Gail Har-
ris, Karen Owens and Lauretta Rah-
Gail Harris has worked in the
Department of Plant P rh,.1.. _- since
June 1995. She came to the department
after working for a short time at the
Health Center and after working in Val-
dosta for the Dean of the College of
Business. Her duties here are similar to
her work in Valdosta. Gail mostly works
with the students of our department.
Many of us have asked for her help in
our scheduling, registering and general
academic advice. She is the person who
is willing to help fix any problems or find
someone who can. Working closely with
Dr. Zettler, she keeps student courses in
order and helps with the prospective
graduate students. Gail also works with
any special projects that come up for the
department, such as keeping the search
for a new faculty member organized. Her
favorite part of her job is the interaction
she has with the students, even though
we may try to drive her crazy with re-
quests! Gail recently moved into a new
home and spends most of her free time
redecorating and cleaning the yard. She


also reads for relaxation and walks 3-5
miles four times a week! Her daughter,
Karen, is a student at UF and Gail enjoys
spending time outside of work with her.

Karen Owens has worked in
the department for almost two years now
and many of you may recognize her as
the patient lady who was recently doing
the departmental inventory. Karen also
answers the phones, sends faxes and e-
mails, and does typing for the depart-
ment. She most enjoys greeting new peo-
ple in the department and those who just
call in. She came to Plant Pathology from
the College of Dentistry and April 18,t
will begin her third year here. Outside of
work, Karen spends time with her family.
Karen and her husband go boating and
fishing with her two children, one 11-
year-old boy and one 9-year-old girl. Her
other hobbies include reading and cro-
cheting. She plans to go to Virginia in
June for her nephew's graduation.
Lauretta Rahmes was born
and raised on Long Island, New York,
and has worked in the plant pathology
department for 14 1/ years. She is in
charge of the payroll processing for the
department as well as the academic re-
porting. She also works with the travel
aspects and she says her favorite part of
working here is meeting the new people
who come in. Lauretta has two children,
a 13-year-old boy and an 18-year-old boy.
She has a very active life outside of work
and enjoys several outdoor activities,
including camping, fishing, boating and,
now that the weather is warming up,
canoeing. She also enjoys working in her
yard and has recently taken up roller
blading. Lauretta recently took up scuba
diving with her husband and son. She
and her family once took a 10-week trip
to see the U.S. and her favorite part was
the Glacier National Park in Montana.

Did you know that...


* Gail has a nine-month-old registered
German Shepherd named Gwen
who likes taking walks with her.
* Gail was once
an avid
hunter/jumper '
horse rider and
even taught the
* Karen grew up in Madison, Wiscon-
* Karen collects cows and even has a
cow backpack from Switzerland.
* Lauretta came to visit a friend who
lived on Marathon Key and while
she was visiting, she met the man
who lived across the street. That
man is now her husband and the
reason why she moved from New
York to lorida!
* Lauretta was a majorette in high
school and was also president of her
4-H Horse Club.

Visiting Scientists
and/or post-docs

Guohong Cai is a Masters of
Science student working under Dr. Ray-
mond Schneider's guidance in the De-
partment of Plant Pathology at Lousiana
State University. The focus of Guo-
hong's work is the population genetics of
Fusarium spp. Dr. Schneider has been
working with Fusarium in his lab for the
past ten years. His lab has also recently
been working on pathogens of soybean,
which is a new field for them.
Guohong received his B.Sc. in
biochemistry from Wuhan University in
China in 1993. He applied to several
graduate schools, but since his wife was
already studying at LSU, his decision to
go there was not very difficult. He is
currently on his second visit to our de-
partment. In both occasions, he stayed in
Dr. Corby Kistler's lab studying various
techniques and protocols concerning

Fusarium developed here in Corby's lab.
Because he was only here for one week
last time, we were unable to interview
him, but since he will stay for one month
this time, we were sure to get to know
him a little better.
When not working in the lab,
Guohong enjoys spending time with his
wife, reading, and playing both volleyball
and chess. When asked about the
weather in Lousiana, he said that it is the
same temperature as here, but they have
much more rain. Guohong says that he
enjoys the academic atmosphere in
Corby's lab. He mentioned also that
both Lianne and Rodney are geniuses in
lab techniques for Fusarium, and that he
feels that he had made some friends here.
We, in the department, are certainly glad that
yo feel that way, Guohong.
You are always welcome to visit us at anytime!

PLP monthly computer review

by Mike Mahovic and Mark Ross

,, With the possi-
(( b)t, ability of the replace-
ment of the aging
/ PCs in the library, we
have been looking at
purchasing Apple iMacs (the Apple cur-
rently in the library has a replacement, an
Apple G3, being set up for use). The
reasoning behind this is an Apple's sim-
plicity of use, compatibility with MS Of-
fice programs (and others) and, primarily,
the price. It turns out that 4 iMacs could
be purchased for the price of only two
new Gateway machines.
iMacs are interoperable with IBM pro-
grams. Any document (for example) that
you create on a PC would be able to be
loaded into the Apple, manipulated and
edited, while still compatible to be used
on an IBM again. The Apples would

also have a smaller footprint than an
IBM (would take up less desk space).
Already, four new iMacs have been pur-
chased which will be placed in the grad-
student offices (no, the ones they are
going in have not yet been determined).
The possibility of adding similar ma-
chines to the library or other offices is
still up in the air. We will wait to see
how the new computers are received,
how well they operate for us, as well as
wait to see just what kind of funds are
available for future additions before
anything more is ordered. Rest assured,
the two new PCs we have will not be
going anywhere. Both will remain in the
library for our use, as will the new G3.
Once these new computers are installed,
please use them! We want to see how
well they work out. Let us know what
you think about this, your opinions
count! It would be great for the depart-
ment if we could spend less money for
more computers.
Until next time,
good computing to you all!

Cool Web sites

http://www.trends.com/ is a very inter-
esting web site, which is going to be
available only until May 1st. It's worth
checking out!!

Do you want to know all about prote-
ases? So you may want to check this
Homepage: www.bi.bbsrc.ac.uk/merops /

If you are interested in finding some use-
ful protocols, you may want to check the
USDA homepage at: http://research.

Leisure and Culture

The new section of the news-
letter "Leisure and Culture" will bring
some insight on what is happening in


Gainesville and region. We hope you all
enjoy it!!

Shows, Festivals:
*Jelon Vieira's DanceBrazil: Blending of
African-rooted Brazilian music and
dance at 8 p.m., Saturday, April 3, at the
Center for the Performing Arts. Tickets:
$10 public, $5 students.
*Bellamy Brothers: Saturday, April 3, at
Twin Oaks Mansion, Silver Springs,
Ocala. The day's music starts at noon.
Concerts are free with paid admission to
the park.
*Teen Playwright Festival: The 1999
award winners in performance 2-6 p.m.
April 3; 1-5 p.m. April 4; and 7:30-11
p.m. April 5, at the Hippodrome State
Theatre. Free.
*Spring Arts Festival: The annual Santa
Fe Community College-sponsored festi-
val is Saturday and Sunday, April 10 and
11, on NE 1st St.
*Thirsty Ear Concert Series: Acoustic
music pioneers Willie and Lobo in con-
cert at 8 p.m. Thursday, April 15, at the
Thomas Center. Admission: $12.
*Gamble Rogers Folk Festival: Headlin-
ers are Arlo Guthrie and Robin and
Linda Williams; April 30, May 1 and 2 at
the St. Augustine Amphitheater on A1A

*"Man of La Mancha" musical through
April 3 at the Gainesville Community
Playhouse, 4039 NW 16th Blvd. Wed. -
Sat., 8 p.m.
*'Jesus Christ Superstar" "rock opera"
through April 17 at the Acrosstown Rep-
ertory Theatre, 619 S. Main St. Thurs.-
Sat., 8 p.m. Tickets: $7 adults, $5 stu-
*"Starting here, starting now": musical
revue by Theatre Santa Fe is at 8 p.m.,
April 2-3 and April 8-10, at Santa Fe
Community College auditorium, 3000
NW 83rd St. Tickets: "4 (395-5561).

School of music concert events:

*April 1, 8 p.m., UMA1, Chamber singers
concert, James Morrow, conductor.
*April 5, 8 p.m., UMA, Percussion en-
semble and steel drum band concert,
Kenneth Broadway, director.
*April 6, 8 p.m., UMA, Friends of music
scholarship concert.
*April 7, 8 p.m., UMA, Symphonic band
concert, Matthew Sexton, conductor.
*April 8, 3 p.m. and 8 p.m., CPA2 Black
Box, 8th Annual Florida Electroacoustic
Music Festival, James Paul Sain, director;
Larry Austin, composer-in-residence.
*April 8, UMA, Symphony orchestra
concert, Clara Jung-Yang Shin, piano
soloist; Raymond Chobaz, conductor.
*April 9, 10 a.m., 3 p.m., and 8 p.m.,
CPA Black Box, 8f1 Annual Florida
Electroacoustic Music Festival, James
Paul Sain, director; Larry Austin, com-
*April 9, 7:30 p.m., 120 MUB3, student
recital, Carolyn Alford, violin.
*April 9, 8 p.m., UMA, University Jazz
bands concert, Gary Langford, conduc-
*April 10, 10 a.m., 3 p.m., and 8 p.m.,
CPA Black Box, 8t1 Annual Florida
Electroacoustic Music Festival, James
Paul Sain, director; Larry Austin, com-
*April 11, 3 p.m., UMA, Organ recital,
Professor Rose Kim, Willis Bodine, co-
* April 13, 8 p.m., UMA, University
Choir Concert, James Morrow, conduc-
* April 15, 16, 8 a.m. noon, 101, 120,
121 MUB, Invitational Band Festival,
Gary Smith, guest conductor.
* April 15, 8 p.m., UMA, Wind Sym-
phony Concert, David Waybright, con-
* April 20, 8 p.m., UMA, Men's Glee
Club/Women's Chorale Concert, Ronald
Burrichter, conductor.
* April 21, 8 p.m., UMA, Concert Bands
Concert, Shawn Barat, Steve Bumett, Joe
Hartley, Kathryn Lindberg, conductors.

1University Memorial Auditorium,

2Center for the Performing Arts,
3Music Building.

Recent Publications

Coelho, L., D.O. Chellemi, D.J.
Mitchell. 1999. Efficacy of solari-
zation and cabbage amendment for
the control of Phytophtora spp. in
North Florida. Plant Dis. 83: 293-
Ploetz, R.C., X. Mourichon. 1999. First
report of Black Sigatoka in Florida.
Plant Dis., 83: 300.
Roberts, P.D., R. Urs, R.J. McGovern.
1999. First report of aerial blight
caused by Pythium myriotylum on to-
mato in Florida. Plant Dis., 83:
Yang, Yanming, E.J. Anderson. 1999.
Antimicrobial activity of a porcine
myeloperoxidase against plant
pathogenic bacteria and fungi. J.
Appl. Microbiol., 86: 211-220.
Vives, M.C., L. Rubio, C. Lopez, J. Na-
vas-Castillo, M.R. Albiach-Marti,
W.O. Dawson, J. Guerri, R. Flo-
res, P. Moreno. 1999. The complete
genome sequence of the major


component of a mild citrus tristeza
virus isolate. J. Gen. Virol. 80: 811-
Ayllon, M.A., C. Lopez, J. Navas-Castillo,
M. Mawassi, W.O. Dawson, J.
Guerri, R. Flores, P. Moreno. 1999.
New defective RNAs from citrus
tristeza virus: evidence for a repli-
case-driven template switching
mechanism in their generation. J.
Gen. Virol., 80: 817-821.

Citrus Health Management. L.W. Tim-
mer and L.W. Duncan, eds. 221pp;
APS Press. 1999.

Text in APS Homepage:
APSnet Feature, March 1 through March
31, 1999. "The most important disease
of a most important fruit." Prepared by
Randy Ploetz, Tropical Research and
Education Center, University of Florida,
IFAS, Homestead. You can find Dr. Plo-
etz's publication at http://www. scisoc.
org/ feature/ banana/Top/html

New members of the
PLP News

This month we are welcoming two new
members of the news team: graduate
students Ronald French and Eduardo

Welome on ;,/'..;

Juliana Freitas-Astua
:.. f, _!.. ...ufl.edu
News Team
Adriana Castafieda
Alvaro Urenia
Angela Vincent
Eduardo Carlos
Mariadaniela Lopez
Mark Ross
Maureen Petersen
Michael Mahovic
Misty Nielsen
Robert Harveson
Robert Kemerait
Ronald French
Wayne Jurick II

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