Journal
PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY
Volume 74, Issue 1, Pages 18-26Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pmpp.2009.08.004
Keywords
Hypersensitive response; Biotic stress; Salicylic acid; Jasmonic acid
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Funding
- Natural Sciences and Engineering Research Council of Canada
- Canada Foundation for Innovation
- Canada Research Chair
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Ethylene is a central signalling agent in mediating plant defence against pathogens. Mutations to the ethylene receptor ETR1 have been shown to alter susceptibility of plants to mycotoxin-induced cell death. Using Fumonisin B-1 (FB1) to induce cell death, we demonstrate that the receptor mutant ein4-1 has a reduced rate of necrosis, potentially due to an upregulation of ETHYLENE RESPONSE FACTOR1. Mutations in other ethylene receptors differentially affected the expression of genes in the jasmonic and salicylic acid defence pathways. Together these data indicate that ethylene receptors do not have redundant roles in mediating FB1-induced cell death. (C) 2009 Elsevier Ltd. All rights reserved.
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