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United States Department of Agriculture

Agricultural Research Service

Title: Modification of Phytoalexin Structure to Improve Cotton Resistance to Wilts

item Stipanovic, Robert
item Liu, Jinggao
item Bell, Alois
item Benedict, Chauncey - TEXAS A&M UNIVERSITY

Submitted to: Proceedings Phytochemical Society of North America 1998
Publication Type: Abstract Only
Publication Acceptance Date: July 1, 1998
Publication Date: N/A

Technical Abstract: New wilt resistant cotton cultivars are capable of recognizing Verticillium dahliae within 12 hours after inoculation as exhibited by maximal mRNA levels for genes involved in lignin and phytoalexin synthesis. Since the new resistant cultivars already exhibit early recognition of the pathogen, it behooves us to focus on improving other defense mechanisms in order to further increase resistance. Phytoalexins play an essential role in cottonÂżs active defense response. As such, we are focusing our research on enhancing the potency of these compounds via two routes: 1) use antisense constructs to reduce the concentrations of the less toxic compounds and 2) introduce genes from related genre that will allow the biosynthesis of more toxic phytoalexins.

Last Modified: 5/5/2015