Open AccessThe B otrytis cinerea cerato‐platanin BcSpl1 is a potent inducer of systemic acquired resistance ( SAR ) in tobacco and generates a wave of salicylic acid expanding from the site of application
Author(s) -
Frías Marcos,
Brito Nélida,
González Celedonio
Publication year - 2013
Publication title -
molecular plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.945
H-Index - 103
eISSN - 1364-3703
pISSN - 1464-6722
DOI - 10.1111/j.1364-3703.2012.00842.x
Subject(s) - salicylic acid , systemic acquired resistance , biology , microbiology and biotechnology , inducer , hypersensitive response , pseudomonas syringae , virulence , pathogen , plant disease resistance , gene , biochemistry , arabidopsis , mutant
Summary Systemic acquired resistance ( SAR ) is a potent plant defence system that, in response to a first contact with a plant pathogen, prepares the whole plant for subsequent attacks, so that it becomes more resistant to the same and to other pathogens. BcSpl1 , a cerato‐platanin family protein abundantly secreted by B otrytis cinerea , is required for full virulence and elicits the hypersensitive response in the host. Here, we report that BcSpl1 is also able to induce in tobacco systemic resistance to two plant pathogens, P seudomonas syringae and B . cinerea , which correlates with the induction of two pathogenesis‐related genes, PR ‐1a and PR ‐5 . Levels of salicylic acid were quantified in situ on BcSpl1 infiltration, and a wave of salicylic acid departing from the point of infiltration and running through the leaf was observed, as well as the appearance of this plant hormone in the neighbouring leaves as early as 3 days after infiltration.