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ARS Home » Northeast Area » Geneva, New York » Grape Genetics Research Unit (GGRU) » Research » Publications at this Location » Publication #260101
Title: Sporulation in Erysiphe necator: signals, differential gene expression and possible implications for disease management

Author
item WAKEFIELD, LAURA - Cornell University
item Cadle-Davidson, Lance
item GADOURY, DAVID - Cornell University
item SEEM, BOB - Cornell University

Submitted to: International Workshop on Grapevine Downy and Powdery Mildew Proceedings
Publication Type: Proceedings
Publication Acceptance Date: 9/20/2010
Publication Date: 11/1/2010
Citation: Wakefield, L., Cadle Davidson, L.E., Gadoury, D., Seem, B. 2010. Sporulation in Erysiphe necator: signals, differential gene expression and possible implications for disease management. International Workshop on Grapevine Downy and Powdery Mildew Proceedings. 212-213.

Interpretive Summary:

Technical Abstract: Abundant production of conidia is a driving factor for epidemics of grape powdery mildew (Erysiphe necator (syn. Uncinula necator). Previous investigations revealed evidence for a signal that coordinates the onset of asexual reproduction. The genetic basis for this signal in powdery mildews had not been previously described. The goal of this research was to identify sequences differentially expressed during vegetative growth and throughout asexual and sexual reproduction in E. necator. We used cDNA-AFLP analysis to identify sequences associated with the developmental stages. Our investigations show some overlap between sporulation associated sequences in E. necator and model systems, but also indicate the fungus may substantially rely on unique genes.