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NO Signalling in Plant Immunity

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Gasotransmitters in Plants

Abstract

The importance of nitric oxide (NO) in innate and adaptive immunity in mammals is well recognised. NO exerts antimicrobial properties against invaders but also displays immunoregulatory functions in which S-nitrosylation represents a signalling process of major importance. Over the last two decades, a growing body of evidence suggests that NO is also a major component of plant immunity. Our understanding of its role in plant defence has been enriched by the identification and functional analysis of S-nitrosylated proteins. The recent identification of new S-nitrosylated proteins including the chaperone-like enzyme cell division cycle 48 (CDC48), histone deacetylases (HDACs) and calmodulin (CaM) reveals that NO could act as a modulator of epigenetic changes and targeting of ubiquitinated proteins for degradation. These findings also expand our understanding of the mechanisms controlling NO synthesis and its crosstalks with calcium signalling in plant immunity.

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Acknowledgements

CR is supported by a fellowship from La Région de Bourgogne (PARI AGREE project) and from the Université de Bourgogne (BQR project).

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Correspondence to David Wendehenne .

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© 2016 Springer International Publishing Switzerland

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Rosnoblet, C. et al. (2016). NO Signalling in Plant Immunity. In: Lamattina, L., García-Mata, C. (eds) Gasotransmitters in Plants. Signaling and Communication in Plants. Springer, Cham. https://doi.org/10.1007/978-3-319-40713-5_11

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