WRKY transcription factors involved in activation of SA biosynthesis genes.

ABSTRACT:

Background

Increased defense against a variety of pathogens in plants is achieved through activation of a mechanism known as systemic acquired resistance (SAR). The broad-spectrum resistance brought about by SAR is mediated through salicylic acid (SA). An important step in SA biosynthesis in Arabidopsis is the conversion of chorismate to isochorismate through the action of isochorismate synthase, encoded by the ICS1 gene. Also AVRPPHB SUSCEPTIBLE 3 (PBS3) plays an important role in SA metabolism, as pbs3 mutants accumulate drastically reduced levels of SA-glucoside, a putative storage form of SA. Bioinformatics analysis previously performed by us identified WRKY28 and WRKY46 as possible regulators of ICS1 and PBS3.

Results

Expression studies with ICS1 promoter::β-glucuronida

SUBMITTER: van Verk MC 

PROVIDER: S-EPMC3120740 | biostudies-literature | 2011 May

REPOSITORIES: biostudies-literature