NDLI: The CNGCb and CNGCd genes from Physcomitrella patens moss encode for thermosensory calcium channels responding to fluidity changes in the plasma membrane

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The CNGCb and CNGCd genes from Physcomitrella patens moss encode for thermosensory calcium channels responding to fluidity changes in the plasma membrane

Content Provider	Springer Nature Link
Author	Finka, Andrija Goloubiff, Pierre
Copyright Year	2013
Abstract	Land plants need precise thermosensors to timely establish molecular defenses in anticipation of upcoming noxious heat waves. The plasma membrane-embedded cyclic nucleotide-gated Ca$^{2+}$ channels (CNGCs) can translate mild variations of membrane fluidity into an effective heat shock response, leading to the accumulation of heat shock proteins (HSP) that prevent heat damages in labile proteins and membranes. Here, we deleted by targeted mutagenesis the CNGCd gene in two Physcomitrella patens transgenic moss lines containing either the heat-inducible HSP-GUS reporter cassette or the constitutive UBI-Aequorin cassette. The stable CNGCd knockout mutation caused a hyper-thermosensitive moss phenotype, in which the heat-induced entry of apoplastic Ca$^{2+}$ and the cytosolic accumulation of GUS were triggered at lower temperatures than in wild type. The combined effects of an artificial membrane fluidizer and elevated temperatures suggested that the gene products of CNGCd and CNGCb are paralogous subunits of Ca$^{2+}$channels acting as a sensitive proteolipid thermocouple. Depending on the rate of temperature increase, the duration and intensity of the heat priming preconditions, terrestrial plants may thus acquire an array of HSP-based thermotolerance mechanisms against upcoming, otherwise lethal, extreme heat waves.
Starting Page	83
Ending Page	90
Page Count	8
File Format	PDF
ISSN	13558145
Journal	Cell Stress and Chaperones
Volume Number	19
Issue Number	1
e-ISSN	14661268
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-05-12
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Plant heat shock response Acquired thermotolerance Ca$^{2+}$ channels Physcomitrella patens Heat shock proteins Biomedicine general Cell Biology Biochemistry Immunology Cancer Research Neurosciences
Content Type	Text
Resource Type	Article
Subject	Cell Biology Biochemistry

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The CNGCb and CNGCd genes from Physcomitrella patens moss encode for thermosensory calcium channels responding to fluidity changes in the plasma membrane

The CNGCb and CNGCd genes from Physcomitrella patens moss encode for thermosensory calcium channels responding to fluidity changes in the plasma membrane

Original paper the cngcb and cngcd genes from physcomitrella patens.

Quantitative proteomic analysis to capture the role of heat-accumulated proteins in moss plant acquired thermotolerance.

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The heat shock response in moss plants is regulated by specific calcium-permeable channels in the plasma membrane.

The CNGCb and CNGCd genes from Physcomitrella patens moss encode for thermosensory calcium channels responding to fluidity changes in the plasma membrane

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The CNGCb and CNGCd genes from Physcomitrella patens moss encode for thermosensory calcium channels responding to fluidity changes in the plasma membrane

The CNGCb and CNGCd genes from Physcomitrella patens moss encode for thermosensory calcium channels responding to fluidity changes in the plasma membrane

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The CNGCb and CNGCd genes from Physcomitrella patens moss encode for thermosensory calcium channels responding to fluidity changes in the plasma membrane