Characterization of Vitis vinifera NPR1 homologs involved in the regulation of pathogenesis-related gene expression.

ABSTRACT:

Background

Grapevine protection against diseases needs alternative strategies to the use of phytochemicals, implying a thorough knowledge of innate defense mechanisms. However, signalling pathways and regulatory elements leading to induction of defense responses have yet to be characterized in this species. In order to study defense response signalling to pathogens in Vitis vinifera, we took advantage of its recently completed genome sequence to characterize two putative orthologs of NPR1, a key player in salicylic acid (SA)-mediated resistance to biotrophic pathogens in Arabidopsis thaliana.

Results

Two cDNAs named VvNPR1.1 and VvNPR1.2 were isolated from Vitis vinifera cv chardonnay, encoding proteins showing 55% and 40% identity to Arabidopsis NPR1 respectively. Constitut

SUBMITTER: Le Henanff G 

PROVIDER: S-EPMC2686700 | biostudies-literature | 2009 May

REPOSITORIES: biostudies-literature