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Article Dans Une Revue Plant Cell Reports Année : 2013

Phosphoglycerolipids are master players in plant hormone signal transduction

Résumé

Phosphoglycerolipids are essential structural constituents of membranes and some also have important cell signalling roles. In this review, we focus on phos-phoglycerolipids that are mediators in hormone signal transduction in plants. We first describe the structures of the main signalling phosphoglycerolipids and the metabolic pathways that generate them, namely the phospholi-pase and lipid kinase pathways. In silico analysis of Arabidopsis transcriptome data provides evidence that the genes encoding the enzymes of these pathways are trans-criptionally regulated in responses to hormones, suggesting some link with hormone signal transduction. The involvement of phosphoglycerolipid signalling in the early responses to abscisic acid, salicylic acid and auxins is then detailed. One of the most important signalling lipids in plants is phosphatidic acid. It can activate or inactivate protein kinases and/or protein phosphatases involved in hormone signalling. It can also activate NADPH oxidase leading to the production of reactive oxygen species. We will interrogate the mechanisms that allow the activation/ deactivation of the lipid pathways, in particular the roles of G proteins and calcium. Mediating lipids thus appear as master players of cell signalling, modulating, if not controlling , major transducing steps of hormone signals.
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Dates et versions

hal-02165012 , version 1 (25-06-2019)

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Martin Janda, Séverine Planchais, Nabila Djafi, Jan Martinec, Lenka Burketová, et al.. Phosphoglycerolipids are master players in plant hormone signal transduction. Plant Cell Reports, 2013, 32 (6), pp.839-851. ⟨10.1007/s00299-013-1399-0⟩. ⟨hal-02165012⟩
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