Role of Arabidopsis bHLH transcription factors MYC2, MYC3 and MYC4 in defense against herbivory www.unil.ch/reymondlab.

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Presentation transcript:

Role of Arabidopsis bHLH transcription factors MYC2, MYC3 and MYC4 in defense against herbivory

ABCD Predators Indirect defenses Direct defenses Induction of defense genes Emission of volatile compounds Induced defenses in response to herbivory TFs Jasmonate pathway

JA signalling from Staswick, 2008 Stimulus (wound, herbivore)

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Role of bHLH transcription factors MYC2, MYC3 and MYC4 Growth of Spodoptera littoralis larvae on myc mutants Fernandez-Calvo et al. (2011) Plant Cell Sub-family of Arabidopsis bHLH transcription factors

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MYCs control GS accumulation in seeds

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Change of feeding behaviour of a generalist herbivore Schweizer et al. (2013) Plant Cell Non-uniform ditribution of GS Schroff et al. (2008) PNAS

Are GS-related MYBs controlled MYC2,3,4? downregulated genes MYC2 MYC3 MYC4 MYC2 MYC3 MYC4 ? ?

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Acknowledgements Fabian Schweizer Gaetan Glauser & Ted Turlings SPSW Chemical Analysis Service, Neuchâtel Patricia Fernandez-Calvo & Roberto Solano Dept. of Plant Molecular Genetics, Madrid Mark Zander, Mathew Lewsey & Joe Ecker The Salk Institute, La Jolla (CA)