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

Details

Serval ID
serval:BIB_92D89B9E11DF
Type
Article: article from journal or magazin.
Publication sub-type
Review (review): journal as complete as possible of one specific subject, written based on exhaustive analyses from published work.
Collection
Publications
Title
Heat perception and signalling in plants: a tortuous path to thermotolerance.
Journal
New Phytologist
Author(s)
Saidi Y., Finka A., Goloubinoff P.
ISSN
1469-8137 (Electronic)
ISSN-L
0028-646X
Publication state
Published
Issued date
2011
Volume
190
Number
3
Pages
556-565
Language
english
Abstract
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.
Keywords
cellular homeostasis, environmental stress, gene regulation, heat sensing, heat-shock protein, signal transduction, thermometer, thermotolerance
Pubmed
Web of science
Open Access
Yes
Create date
18/05/2011 10:27
Last modification date
20/08/2019 15:55
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