Heat perception and signalling in plants: a tortuous path to thermotolerance.

Détails

ID Serval
serval:BIB_92D89B9E11DF
Type
Article: article d'un périodique ou d'un magazine.
Sous-type
Synthèse (review): revue aussi complète que possible des connaissances sur un sujet, rédigée à partir de l'analyse exhaustive des travaux publiés.
Collection
Publications
Titre
Heat perception and signalling in plants: a tortuous path to thermotolerance.
Périodique
New Phytologist
Auteur(s)
Saidi Y., Finka A., Goloubinoff P.
ISSN
1469-8137 (Electronic)
ISSN-L
0028-646X
Statut éditorial
Publié
Date de publication
2011
Volume
190
Numéro
3
Pages
556-565
Langue
anglais
Résumé
An accurate assessment of the rising ambient temperature by plant cells is crucial for the timely activation of various molecular defences before the appearance of heat damage. Recent findings have allowed a better understanding of the early cellular events that take place at the beginning of mild temperature rise, to timely express heat-shock proteins (HSPs), which will, in turn, confer thermotolerance to the plant. Here, we discuss the key components of the heat signalling pathway and suggest a model in which a primary sensory role is carried out by the plasma membrane and various secondary messengers, such as Ca(2+) ions, nitric oxide (NO) and hydrogen peroxide (H(2) O(2) ). We also describe the role of downstream components, such as calmodulins, mitogen-activated protein kinases and Hsp90, in the activation of heat-shock transcription factors (HSFs). The data gathered for land plants suggest that, following temperature elevation, the heat signal is probably transduced by several pathways that will, however, coalesce into the final activation of HSFs, the expression of HSPs and the onset of cellular thermotolerance.
Mots-clé
cellular homeostasis, environmental stress, gene regulation, heat sensing, heat-shock protein, signal transduction, thermometer, thermotolerance
Pubmed
Web of science
Open Access
Oui
Création de la notice
18/05/2011 10:27
Dernière modification de la notice
20/08/2019 15:55
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