Membrane lipid composition affects plant heat sensing and modulates Ca ( 2+) -dependent heat shock response.

Détails

ID Serval
serval:BIB_E05E8A3EFB76
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Membrane lipid composition affects plant heat sensing and modulates Ca ( 2+) -dependent heat shock response.
Périodique
Plant Signaling and Behavior
Auteur(s)
Saidi Y., Peter M., Finka A., Cicekli C., Vigh L., Goloubinoff P.
ISSN
1559-2324 (Electronic)
ISSN-L
1559-2316
Statut éditorial
Publié
Date de publication
2010
Volume
5
Numéro
12
Pages
1530-1533
Langue
anglais
Résumé
Understanding how plants sense and respond to heat stress is central to improve crop tolerance and productivity. Recent findings in Physcomitrella patensdemonstrated that the controlled passage of calcium ions across the plasma membrane regulates the heat shock response (HSR). To investigate the effect of membrane lipid composition on the plant HSR, we acclimated P. patens to a slightly elevated yet physiological growth temperature and analysed the signature of calcium influx under a mild heat shock. Compared to tissues grown at 22°C, tissues grown at 32°C had significantly higher overall membrane lipid saturation level and, when submitted to a short heat shock at 35°C, displayed a noticeably reduced calcium influx and a consequent reduced heat shock gene expression. These results show that temperature differences, rather than the absolute temperature, determine the extent of the plant HSR and indicate that membrane lipid composition regulates the calcium-dependent heat-signaling pathway.
Pubmed
Création de la notice
18/05/2011 10:37
Dernière modification de la notice
20/08/2019 17:04
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