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ARS Home » Southeast Area » Dawson, Georgia » National Peanut Research Laboratory » Research » Research Project #435624

Research Project: Integration of Traditional Methods and Novel Molecular Strategies for Improving Disease Resistance and Input-use Efficiency in Peanut

Location: National Peanut Research Laboratory

Project Number: 6044-21000-005-00-D
Project Type: In-House Appropriated

Start Date: Jul 30, 2018
End Date: Jul 29, 2023

Objective:
Objective 1. Characterize peanut pathogens, host responses, and host-plant interactions, including diversity of plant invasion and plant health genes, and use genomic and transcriptomic knowledge for discovery and development of novel methods or technologies to control diseases. Objective 2. Identify, characterize, and evaluate peanut genes involved in disease resistance and drought tolerance, including discovery and elucidation of agriculturally-relevant candidate genes, and work with breeders to facilitate implementation into breeding programs. Objective 3. In collaboration with Auburn University partners, develop and release superior peanut cultivars and improved germplasm with disease resistance and input-use efficiency.

Approach:
Double strand RNA (dsRNA) that targets aflatoxin synthesis can be used as a therapeutic control of mycotoxins in peanut without genetic transformation. Knowing the genetic makeup of peanut pathogens (Cercospora arachidicola, Cercosporidium personatum, Thecaphora frezzi, Aspergillus (A.) niger, A. flavus and A. parasiticus) allows for a better disease management and longer effectiveness of control. Identification and validation of molecular markers associated with biotic (early and late leaf spot, peanut smut, crown rot disease, mycotoxin producing fungi), and abiotic (drought) stress resistance in wild peanuts and land races will accelerate breeding programs.