Heat Shock Signaling in Land Plants: From Plasma Membrane Sensing to the Transcription of Small Heat Shock Proteins.

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State: Public
Version: Final published version
License: CC BY 4.0
Serval ID
serval:BIB_D030A657C44A
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
Institution
Title
Heat Shock Signaling in Land Plants: From Plasma Membrane Sensing to the Transcription of Small Heat Shock Proteins.
Journal
Frontiers in plant science
Author(s)
Bourgine B., Guihur A.
ISSN
1664-462X (Print)
ISSN-L
1664-462X
Publication state
Published
Issued date
2021
Peer-reviewed
Oui
Volume
12
Pages
710801
Language
english
Notes
Publication types: Journal Article ; Review
Publication Status: epublish
Abstract
Heat stress events are major factors limiting crop productivity. During summer days, land plants must anticipate in a timely manner upcoming mild and severe temperature. They respond by accumulating protective heat-shock proteins (HSPs), conferring acquired thermotolerance. All organisms synthetize HSPs; many of which are members of the conserved chaperones families. This review describes recent advances in plant temperature sensing, signaling, and response. We highlight the pathway from heat perception by the plasma membrane through calcium channels, such as cyclic nucleotide-gated channels, to the activation of the heat-shock transcription factors (HSFs). An unclear cellular signal activates HSFs, which act as essential regulators. In particular, the HSFA subfamily can bind heat shock elements in HSP promoters and could mediate the dissociation of bound histones, leading to HSPs transcription. Although plants can modulate their transcriptome, proteome, and metabolome to protect the cellular machinery, HSP chaperones prevent, use, and revert the formation of misfolded proteins, thereby avoiding heat-induced cell death. Remarkably, the HSP20 family is mostly tightly repressed at low temperature, suggesting that a costly mechanism can become detrimental under unnecessary conditions. Here, the role of HSP20s in response to HS and their possible deleterious expression at non-HS temperatures is discussed.
Keywords
acquired thermotolerance, calmodulins, cyclic nucleotide-gated channels, global warming, heat shock response, heat shock transcription factor, heat stress, small heat-shock proteins
Pubmed
Web of science
Open Access
Yes
Create date
03/09/2021 18:57
Last modification date
11/09/2021 7:13
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