Faculty

A. Elizabeth (Betsy) Arnold

Professor and Curator, RLG Mycological Herbarium - School of Plant Sciences
822D Marley / (520) 344-2327 / arnold@ag.arizona.edu
(520) 626-1035 (Lab)
We study fungal ecology, evolution, and systematics, with a special focus on fungal endophytes. Ranging from Arctic tundra to tropical forests, our diverse projects are united by an interdisciplinary approach and our passion for organismal biology.

David Baltrus

Assistant Professor - School of Plant Sciences
821C Marley / (520) 626-8215 / baltrus@email.arizona.edu
(520) 626-6573 (Lab)
The Baltrus lab is interested in understanding microbial evolution with a focus on the mechanisms and costs of adaptation and guided by expectations from genomics and population genetics.

Mark Beilstein

Assistant Professor - School of Plant Sciences
Marley 441C / (520) 626-1562 / mbeilstein@email.arizona.edu
(520) 626-1563 (Lab)
The focus of my lab is functional evolution in the plant family Brassicaceae. Currently my group is working to understand how the enzyme telomerase evolved. In addition we are interested in the processes by which long non-coding RNAs emerge and gain...

Judith Brown

Professor - School of Plant Sciences
Forbes Bld 431 / (520) 621-1402 / jbrown@cals.arizona.edu
(520) 621-1230 (Lab)
Research focuses on the dynamics of distribution, prevalence, and co-diversification driving emergent hemipteran-vectored pathogen outbreaks in cultivated and natural systems, and functional genomics to probe vector-pathogen specificity determinants.

Peter Cotty

Adjunct Professor and Research Plant Pathololgist, Agricultural Research Service, USDA
Marley 341F / (520) 626-5049 / Peter.Cotty@ARS.USDA.GOV
(520) 626-6775 (Lab)
Biology and genetics of aflatoxin-producing fungi and the etiology and epidemiology of aflatoxin contamination.

Bentley Fane

Professor - School of Plant Sciences
219 Keating Building / (520) 626-6634 / bfane@email.arizona.edu
(520) 621-8539 (Lab)
Taking genetic, biochemical, and evolutionary approaches, our research objective is elucidating the molecular mechanisms of scaffolding-mediated and genome-mediate viral morphogenesis using the single-stranded DNA Microviruses.

Kenneth A. Feldmann

Professor - School of Plant Sciences
Marley 822C / (520) 621-7158 / feldmann@cals.arizona.edu
(520) 621-3792 (Lab)
We pursue HTP functional genomics strategies in plants. In addition we aim to improve the genetics of switchgrass by identifying plants that are apomictic and self-fertile. We are also screening for variant phenotypes that we will be mapping.

David Galbraith

Professor - School of Plant Sciences
Keating Building, Room 341 / (520) 621-9153 / galbraith@arizona.edu
His research centers around the development of new technologies and methods for the analysis of eukaryotes. Recognized as a pioneer in flow cytometry, his contributions have greatly improved our understanding of cell-specific gene expression.

Martha Hawes

Professor - Soil, Water and Environmental Science
Marley 341E / (520) 621-5490 / mhawes@email.arizona.edu

Eliot Herman

Professor - School of Plant Sciences
Keating 249 / (520) 626-1641 / emherman@email.arizona.edu
My research program is directed at understanding the systems biology that controls seed composition and biotechnology to create seed traits including low allergen content, animal feed, and as a protein bio-factory.

Jiahuai "Alex" Hu

Assistant specialist & asst. professor - School of Plant Sciences
Marley 341D / (520) 626-6287 / epp@email.arizona.edu

David Kopec

Specialist - School of Plant Sciences
(520) 318-7142 / dkopec@ag.arizona.edu

Chieri Kubota

Professor - School of Plant Sciences
CEA 102 / Forbes 209 / (520) 626-8833 / ckubota@ag.arizona.edu
Dr. Kubota's research contributes to the development of science and technology in the area of controlled environment agriculture (CEA). Her research platform includes all CE systems including greenhouses, growth chambers, and tissue culture.

Eric Lyons

Assistant Professor - School of Plant Sciences
4th Floor Bio5; 441F Marley / (520) 626-5070 / ericlyons@email.arizona.edu
Understanding the structure, evolution, and dynamics of genomes.

Michael Matheron

Extension Plant Pathologist - School of Plant Sciences
Yuma Agricultural Center / (928) 782-5863 / matheron@cals.arizona.edu
Ecology and management of fungal diseases of vegetable crops and citrus.

William McCloskey

Extension Weed Specialist - School of Plant Sciences
541B Marley / (520) 621-7613 / wmcclosk@cals.arizona.edu
Evaluation of management tactics for weedy and invasive plant species in Arizona's crops, range and natural landscapes including cultural methods, herbicides, GPS-RTK precision cultivation, optical sensing and computer technology.

Michelle McMahon

Associate Professor - School of Plant Sciences
Marley 441G, Herring 105 / (520) 626-0479 / mcmahonm@cals.arizona.edu
Dr. McMahon researches phylogenetic and phylogenomic methods, systematics of the legume family (Fabaceae), and phylogenetic diversity of regional floras. She also directs the UA Herbarium.

Istvan Molnar

Associate Professor - School of Natural Resources and the Environment
Natural Products Center / (520) 621-9932 / imolnar@email.arizona.edu
https://cals.arizona.edu/spls/content/istvan

Rebecca Mosher

Assistant Professor - School of Plant Sciences
Marley 821B / (520) 626-4185 / rmosher@email.arizona.edu
(520) 626-7765 (Lab)
Dr. Mosher studies RNA-directed DNA methylation.

Kurt D. Nolte

Agriculture Agent - School of Plant Sciences
2200 W. 28th St; Yuma AZ 85364 / (928) 503-4956 / knolte@ag.arizona.edu
Kurt's primary Extension appointment is in the area of vegetable production and, in particular, fresh produce safety.

Mary Olsen

Extension Specialist - School of Plant Sciences
Marley 541F / (520) 626-2568x1 / molsen@ag.arizona.edu
(520) 626-2679 (Lab)
Extension programs are based on diagnosis of diseases and problem solving research on the etiology and control of pathogens of important economic crops in Arizona.

Marc Orbach

Professor - School of Plant Sciences
Marley 341J / (520) 621-3764 / orbachmj@ag.arizona.edu
(520) 621-9891 (Lab)

Michael Ottman

Extension Agronomist - School of Plant Sciences
Marley 541C / (520) 621-1583 / mottman@email.arizona.edu
(520) 621-7619 (Lab)
My research is in the areas of crop production and crop physiology. Specific topics include the effect of climate and weather, fertilizer and irrigation, and genotypes on growth and yield of alfalfa, corn, sorghum, barley, wheat, and perennial...

Ravi Palanivelu

Associate professor - School of Plant Sciences
Marley Building Rm 441E / (520) 626-2229 / rpalaniv@email.arizona.edu
(520) 621-9567 (Lab)
Dr. Palanivelu's lab is identifying the molecular mechanisms that mediate Arabidopsis pollen tube germination, growth, guidance, and reception in the female gametophyte.

Mohammad Pessarakli

Research Professor - School of Plant Sciences
Karsten Turfgrass Research Facility & Forbes Bldg., Room 309A / (520) 321-7786 / pessarak@email.arizona.edu
(520) 321-7786 (Lab)
Research focused on the adaptation of turfgrass species/genotypes/cultivars to environmental (salinity, drought, & heat) stresses, screening various turfgrasses for stress tolerances in hydroponics culture as well as in the field, and studying...

Barry Pryor

Professor - School of Plant Sciences
Marley 541E / (520) 626-5312 / bmpryor@u.arizona.edu
(520) 626-2781 (Lab)
Dr. Pryor's research interests include biological and cultural control of disease in field, tree, and vegetable crops, phylogenetic analysis and species concepts in fungi, secondary fungal metabolites, and environmental mycology. Additional...

Tanya M. Quist

Associate Professor of Practice - School of Plant Sciences
Forbes Bldg., Rm. 317 / (520) 621-1582 / tquist@email.arizona.edu
(520) 306-1228 (Lab)
Dr. Quist's instruction and extension programs focus on landscape horticulture of arid adapted plants and in promoting environmental conservation.

Dennis T. Ray

University Distinguished Professor - School of Plant Sciences
Forbes 415 / (520) 621-7612 / dtray@email.arizona.edu
(520) 621-2817 (Lab)
Research emphasizes evaluation and enhancement of new and/or underutilized plant germplasm suitable for cultivation in arid environments. Present focus is the evaluation and development of new biofuel feedstocks.

Monica Schmidt

Assistant Professor - School of Plant Sciences
Keating 303 / (520) 626-1643 / monicaschmidt@email.arizona.edu
Research focus is on biofortification of crops and the alteration of both lipid and protein composition

Ursula Schuch

Extension Specialist and Professor - School of Plant Sciences
Forbes 435 / (520) 621-1060 / uschuch@email.arizona.edu
Dr. Schuch's research addresses issues in plant production and landscape management with the goal to provide information on how to produce and maintain healthy, functional plants with minimum inputs.

Karen Schumaker

Director - School of Plant Sciences
Marley 441B / (520) 621-9635 / schumake@email.arizona.edu
(520) 621-8910 (Lab)
Our research is focused on understanding how cellular energy transduction is regulated and the molecular evolution of genes that control plant adaptation. These two projects intersect in their importance for plant growth in saline environments.

Jeffrey C. Silvertooth

Associate Dean and Director, Economic Development & Extension and Professor - Soil, Water and Environmental Science
Forbes 301 / (520) 621-7145 / silver@ag.arizona.edu
Pursuing greater efficiency of agronomic inputs into crop production systems of Arizona.

Steven Smith

Associate Professor - School of Natural Resources and the Environment
N359 ENR2 / (520) 626-5325 / azalfalf@ag.arizona.edu

S. Patricia Stock

Professor - Entomology
Marley 741B / (520) 626-3854 / spstock@email.arizona.edu
(520) 621-1317 (Lab)
My research program centers on the study of mutualistic and antagonistic interactions of insect parasites and pathogens. The primary focus is on the so-called “entomopathogenic nematodes” (a.k.a. EPN) which encompass two families, Steinernematidae...

Frans Tax

Professor - Molecular and Cellular Biology
LSS 354 / (520) 626-1186 / fetax@u.arizona.edu
(520) 626-3501 (Lab)
Our major goal is to understand the mechanisms used by plants to specify and maintain cell fates, from stem cells to differentiated cell types. We are also interested in manipulating the architecture of crop plants using genetic means.

J. Bruce Walsh

Professor - Ecology and Evolutionary Biology
jbwalsh@email.arizona.edu

Rick Ward

School of Plant Sciences

Rod A. Wing

Bud Antle Endowed Chair Professor - School of Plant Sciences
Keating BioResearch Building, Room 253 / (520) 626-9595 / rwing@ag.arizona.edu
(520) 626-9601 (Lab)
Our lab is focused on structural and evolutionary genomics of crop plants, and is leading an international effort to generate reference genome sequences for all 24 species of the genus Oryza, which contains the world most important food crop – rice.

Glenn Wright

Extension Horticulturist - School of Plant Sciences
Yuma Agriculture Center / (928) 782-5876 / gwright@ag.arizona.edu
Our lab conducts applied research on citrus, date palms and other tree fruit crops of importance to the desert. southwest. This includes investigations of rootstock and variety evaluation, pollination, fruit thinning, plant nutrition, irrigation,...

Zhongguo Xiong

Associate Professor - School of Plant Sciences
Marley 541A / (520) 621-9869 / zxiong@email.arizona.edu
(520) 621-9916 (Lab)
My research aims to understand the intricate interplays between viruses and their plant hosts during infection, mechanisms of plant resistance to viral infections, RNA virus evolution, and viral population genomics.

Ramin Yadegari

Professor - School of Plant Sciences
Marley 441D / (520) 621-1616 / yadegari@arizona.edu
(520) 621-9095 (Lab)
We are primarily interested in understanding how seed development is regulated. Our current focus is to decipher the gene-regulatory networks that control endosperm development and function in maize and Arabidopsis.

Post-Doctoral Associates & Research Staff

Abdel Anouti

Director, Arizona Crop Improvement Association - School of Plant Sciences
Campus Agricultural Center / (520) 305-3586 / anouti@ag.arizona.edu

Matthew Bomhoff

Software Engineer - School of Plant Sciences
(520) 626-5070 / mbomhoff@email.arizona.edu

Julie Cheung

Research Technician - School of Plant Sciences
(520) 626-1563 / cheungj@email.arizona.edu

Mary Comeau

Research Specialist - School of Plant Sciences
Forbes 114D / (520) 621-7619 / mcomeau@ag.arizona.edu

Dario Copetti

Assistant Research Scientist - School of Plant Sciences
Keating / (520) 626-9585 / dcopetti@email.arizona.edu

Sarah Doore

Posdoctoral Research Associate - School of Plant Sciences
(520) 626-6634 / sdoore@email.arizona.edu

Linda Drew

Research Specialist, Senior - School of Plant Sciences
Marley 510 / (520) 626-2679 / ldrew@email.arizona.edu

Tonja Fisher

Assistant Research Scientist - School of Plant Sciences
Forbes 409 / (520) 621-1230 / twfisher@email.arizona.edu

Nicholas Garber

Postdoctoral Research Associate - School of Plant Sciences

Jeffrey Gilbert

Research Specialist, Senior - School of Plant Sciences
Campus Agricultural Center / (520) 235-5601 / jgilbert@ag.arizona.edu

Jochen Gohlke

Postdoctoral Research Associate - School of Plant Sciences
gohlke@email.arizona.edu

Kevin Hockett

Postdoctoral Research Associate - School of Plant Sciences
(520) 626-6573 / hockettk@email.arizona.edu

Ramon Jaime

Assistant Research Scientist - School of Plant Sciences
Shantz 115 / (520) 626-5704 / rjaime@email.arizona.edu

Blake Joyce

Posdoctoral Research Associate - School of Plant Sciences
bjoyce3@email.arizona.edu

Peg Kattnig

UA Associate - School of Plant Sciences
Shantz 115 / (520) 626-5704 / kattnig@email.arizona.edu

Tim Kendall

Research Specialist - School of Plant Sciences
Marley / (520) 621-7765 / kendallt@email.arizona.edu

Ho-youn Kim

Postdoctoral Research Associate - School of Plant Sciences
jsakim@email.arizona.edu

Noel Kitchen

Research Technician - School of Plant Sciences
(520) 621-1230 / nkitchen@email.arizona.edu

Mark Kroggel

Research Specialist - School of Plant Sciences
Campus Agricultural Center / (520) 626-3928 / kroggel@ag.arizona.edu

David Kudrna

Coordinator, Bac/Est Resource Center - School of Plant Sciences
Keating 203 / (520) 626-9596 / dkudrna@ag.arizona.edu

Seunghee Lee

Assistant Research Scientist - School of Plant Sciences
Keating 202 / (520) 626-9590 / seunghl@ag.arizona.edu

Ming-min Lee

Research Specialist - School of Plant Sciences
(520) 626-1035 / mingmail@email.arizona.edu

Guosheng Li

Assistant Staff Scientist - School of Plant Sciences
Marley 403 / (520) 621-9095 / lig@email.arizona.edu

Xunliang Liu

Postdoctoral Research Associate - School of Plant Sciences
Marley 441J / (520) 621-9567 / xunliangliu@email.arizona.edu

Patricia Lu-Irving

Postdoctoral Research Associate - School of Plant Sciences
(520) 626-6573 / luirving@email.arizona.edu

Ale Mandel

Assistant Research Scientist - School of Plant Sciences
Marley 306 / (520) 621-9891 / mandel@ag.arizona.edu

Shea Monihan

Postdoctoral Research Associate - School of Plant Sciences
Marley 409 / (520) 621-8910 / sheam@email.arizona.edu

Joseph Myers

Research Staff - School of Plant Sciences
jmyers457@email.arizona.edu

Andrew Nelson

Postdoctoral Research Associate - School of Plant Sciences
(520) 626-1563 / andrewnelson@email.arizona.edu

Anna Nelson Dittrich

Research Associate - School of Plant Sciences
(520) 626-1563 / annand@email.arizona.edu

Maria Newcomb

Assistant Research Scientist - School of Plant Sciences
(520) 316-6364 / newcombm@email.arizona.edu

Thu Nguyen

Research Technician - School of Plant Sciences
ttn@email.arizona.edu

Trang Nguyen

Research Technician - School of Plant Sciences
(520) 626-5704 / trangn@email.arizona.edu

Timothy Rast

Research Specialist, Senior - School of Plant Sciences
Marley / (520) 626-9315 / trast@email.arizona.edu

Choong-Hwan Ryu

Postdoctoral Research Associate II - School of Plant Sciences
Marley 403 / (520) 621-9095 / ryuch@email.arizona.edu

Carl Schmalzel

Research Specialist, Senior - School of Plant Sciences
Campus Agricultural Center / (520) 321-7788 / cschmalz@email.arizona.edu

Shanshan Shi

Postdoctoral Research Associate - School of Plant Sciences
(520) 621-9916 / ssshi@email.arizona.edu

Katherine Startt

Program Coordinator, Senior
Campus Agriculture Center / (520) 305-3586 / kstartt@cals.arizona.edu

Sheri Steidl

Research Staff - School of Plant Sciences
sheris1@email.arizona.edu

Valerie Teetor

Research Specialist, Senior - School of Plant Sciences
Forbes 207 / (520) 621-2817 / teetor@ag.arizona.edu

Dhiraj Thakare

Research Associate - School of Plant Sciences
(520) 626-1643 / drthakare@email.arizona.edu

Yanbing Wang

Postdoctoral Research Associate - School of Plant Sciences
(520) 621-9267 / yanbingwang@email.arizona.edu

Brett Weiss

Research Technician - School of Plant Sciences
(520) 626-5704 / bjweiss@email.arizona.edu

Shanshan Zhang

Assistant Staff Scientists - School of Plant Sciences
Marley 441J / (520) 621-9095 / sszhang3@email.arizona.edu

Jianwei Zhang

Research Assistant Professor - School of Plant Sciences
Keating 200A3 / (520) 626-9590 / zhangjw@email.arizona.edu

Graduate Students

Wen Chen

School of Plant Sciences
Marley 803 / (520) 626-7765 / wenchen@email.arizona.edu

William Gurley

School of Plant Sciences
(520) 621-9095 / wmgurley@email.arizona.edu

Aasiya Hamzazai

School of Plant Sciences
(520) 621-1230 / aasiyahamzazai@email.arizona.edu

Paul W. Kachapulula

School of Plant Sciences
Tucson / (520) 626-8932 / paulwkachapulula@email.arizona.edu

Carlos Maldonado

School of Plant Sciences
(520) 626-9595 / ceml@email.arizona.edu

Jennifer Noble

School of Plant Sciences
Marley 420 / (520) 621-9567 / jsepulve@email.arizona.edu

Mana Ohkura

School of Plant Sciences
(520) 621-9891 / manabanana@email.arizona.edu

Shuzo Oita

School of Plant Sciences
shuzoo@email.arizona.edu

Kyle Palos

School of Plant Sciences

Jorge Paredes

School of Plant Sciences
(520) 621-1230 / jrparedes@email.arizona.edu

Justin Shaffer

School of Plant Sciences
Office: Marley 821D / (520) 626-1035 / justinshaffer@email.arizona.edu
My research is focused on the ecology and evolution of plant-microbe interactions. I am currently interested in how bacterial endosymbionts of plant-associated fungi influence aspects of plant-fungus interactions and more broadly, plant community...

Brian Smith

School of Plant Sciences
basmith@email.arizona.edu

Joshua Weaver

School of Plant Sciences
(520) 626-3792 / jweaver2011@email.arizona.edu

Junpeng Zhan

School of Plant Sciences
Marley 403 / (520) 621-9095 / zhan@email.arizona.edu
My research focuses on identification of gene regulatory networks that control cell differentiation and storage function of endosperm through genome-wide analysis of gene expression, protein-DNA interactions, and protein-protein interactions.

Emeritus Faculty

Patricia Rorabaugh

Assistant Professor of Practice Emeritus
patrora@ag.arizona.edu

Administrative Staff

Administrative Support

Kathleen Van Os

Administrative Assistant - School of Plant Sciences
Forbes 303 / (520) 621-1977 / knoble@email.arizona.edu

Trevor Behan

Business Manager Senior, Fiscal Officer - School of Plant Sciences
Forbes 303B / (520) 621-8689 / tbehan@email.arizona.edu

Richard DeGuzman

Accountant - School of Plant Sciences
Forbes 303A / (520) 621-9551 / deguzman@email.arizona.edu

Fatemah Dili

Grants & Contracts Manager
Forbes 410D / (520) 621-1941 / fdili@email.arizona.edu

Mary Martinez

HR Representative - School of Plant Sciences
Forbes 303D / (520) 621-1978 / martinez8@email.arizona.edu

IT Support

Mario Marquez

Systems Administrator, Principal - School of Plant Sciences
Forbes 411 / (520) 621-1257 / marquezm@email.arizona.edu

Student Records

Georgina Lambert

Program Coordinator, Senior - School of Plant Sciences
Forbes 319 / (520) 621-1219 / glambert@email.arizona.edu