期刊
PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY
卷 71, 期 1-3, 页码 33-40出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pmpp.2007.10.001
关键词
Solanum lycopersicum; Grey mould; 2-Deoxy-D-glucose; ABA; sitiens; Necrotrophic pathogens
资金
- Fonds voor Wetenschappelijk Onderzoek-Vlaanderen'' [G. 0350.04, G. 0061.03]
- Ghent University
In Arabidopsis, abscisic acid (ABA) application can induce resistance by priming for callose deposition; this resistance is impaired in ABA-deficient and -insensitive mutants. In tomato, ABA-deficiency causes resistance to Botrytis cinerea. Here, we show that callose deposition after B. cinerea inoculation is weaker in the ABA-deficient sitiens tomato mutant compared to the wild type (WT). Inhibition of callose synthesis did not affect resistance in sitiens, but caused additional susceptibility in WT. These findings indicate that callose deposition is not part of sitiens defence responses that are effective in blocking B. cinerea and suggest that callose deposition only contributes to WT basal resistance. Furthermore, also in tomato callose formation is at least in part ABA-dependent. However, it seems that in contrast to Arabidopsis, basal ABA levels in tomato are sufficiently high to prime for callose deposition. (C) 2007 Elsevier Ltd. All rights reserved.
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