Center for Plant Cell Biology


Howard JudelsonHoward Judelson, S.

Director, NSF CEPCEB REU Program

Mailing Address:

Plant Pathology and Microbiology
Genomics Building /1234A
University of California
Riverside, CA 92521

Phone: (951) 827-4199
Fax: (951) 827-4294
Email: howard.judelson@ucr.edu

Lab Website
UCR Living the Promise (2012)
CEPCEB REU (Research Experience for Undergraduates) Program


B.S. Cornell University
Ph.D. University of Wisconsin-Madison

College/Division Affiliation:

College of Natural and Agricultural Sciences

Center/Inst Affiliation(s):

Center for Plant Cell Biology

Areas Of Expertise:

Molecular Biology; Genetics; Developmental Biology; Plant Pathogen; Fungi

Awards / Honors:

Ruth Allen Award, American Phytopathological Society
McKnight Foundation Fellowship

Research Summary:

We study the eukaryotic microbes known as oomycetes, especially Phytophthora infestans which causes the late blight diseases of tomato and potato.  Most of our research involves characterizing genes involved in important aspects of the growth of P. infestans, particularly the development and germination of spores.  For example, by incorporating data from microarray expression profiling, transcription factor purification studies, the functional dissection of promoters, and genome database mining we are assembling the transcriptional networks involved in sporulation and spore germination, for both sexual and asexual spores.  This is a multidisciplinary approach that combines the tools of genetics, genomics, bioinformatics cell biology, and biochemistry.  Such work is revealing novel aspects of the biology of the oomycetes, and in the long-term should lead to improved methods for controlling the diseases that they cause on crop and ornamental plants.

FIg. 1: sexual spore (oospore) producted by Phytophthora infestans


FIg. 2: expression of sporangiophore-specific promoter, fused to the GUS reporter gene, in transformant of Phytophthora infestans

Related Press Releases:

UCR Living the Promise YouTube (2012): Chemical Free Crop Defense

UCR March 30, 2011: UC Riverside Researcher Receives $9 Million USDA Grant to Study Potato and Tomato Disease

Selected Publications:

List of publications from HubMed

Lab Personnel:

Ah Fong, Audrey
Assistant Specialist —  Genomics, promoter analysis, asexual spore development
Gamboa-Melendez, Heber
Postdoctoral Researcher —  Asexual spore development, protein phosphorylation
Xiang, Qijun
Postdoctoral Researcher — Promoter analysis, transcription factor purification, asexual spore development
Kagda, Meenakshi
Graduate Student Researcher —  Bioinformatics, regulation of zoosporogenesis
Niu, Xiaofan
Graduate Student Researcher —  Sexual development, RNA-binding proteins
Roy, Sourav
Graduate Student Researcher —  Bioinformatics, regulation of zoosporogenesis

More Information

General Campus Information

University of California, Riverside
900 University Ave.
Riverside, CA 92521
Tel: (951) 827-1012

Career OpportunitiesUCR Libraries
Campus StatusDirections to UCR

Center Information

Center for Plant Cell Biology
Botany & Plant Sciences Department
2150 Batchelor Hall

Tel: (951) 827-7177
Fax: (951) 827-5155
E-mail: genomics@ucr.edu