The novel elicitor AsES triggers a defense response against Botrytis cinerea in Arabidopsis thaliana

HAEL-CONRAD, V; ABOU-MANSOUR, E; DIAZ RICCI, JC; MÉTRAUX, JP; SERRANO, M

PLANT SCIENCE

ELSEVIER IRELAND LTD

Lugar: Amsterdam; Año: 2015 vol. 241 p. 120 - 127

0168-9452

AsES(Acremonium strictum Elicitor and Subtilisin) is a novel extracellular elicitorprotein produced by the avirulent isolate SS71 of the opportunist strawberryfungal pathogen A. strictum. Here we describe the activity of AsES in theplant-pathogen system Arabidopsis thaliana?Botrytis cinerea. We show that AsES rendersA. thaliana plants resistant to the necrotrophic pathogen B. cinerea, bothlocally and systemically and the defense response observed is dose-dependent.Systemic, but not local resistance is dependent onthe length of exposure toAsES. The germination of the spores in vitro was not inhibited by AsES,implying that protection to B. cinerea is due to the induction of the plantdefenses. These results were furthersupported by the findings that AsESdifferentially affects mutants impaired in the response to salicylic acid,jasmonic acid and ethylene, suggesting that AsES triggers the defense responsethrough these three signaling pathways.