Abscisic acid deficiency leads to rapid activation of tomato defence responses upon infection with Erwinia chrysanthemi.

ABSTRACT: In addition to the important role of abscisic acid (ABA) in abiotic stress signalling, basal and high ABA levels appear to have a negative effect on disease resistance. Using the ABA-deficient sitiens tomato (Solanum lycopersicum) mutant and different application methods of exogenous ABA, we demonstrated the influence of this plant hormone on disease progression of Erwinia chrysanthemi. This necrotrophic plant pathogenic bacterium is responsible for soft rot disease on many plant species, causing maceration symptoms mainly due to the production and secretion of pectinolytic enzymes. On wild-type (WT) tomato cv. Moneymaker E. chrysanthemi leaf inoculation resulted in maceration both within and beyond the infiltrated zone of the leaf, but sitiens showed a very low occurrence of tissue macera

SUBMITTER: Asselbergh B 

PROVIDER: S-EPMC6640284 | biostudies-literature | 2008 Jan

REPOSITORIES: biostudies-literature