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The calcium sensor CBL1 integrates plant responses to abiotic stresses

The calcium sensor CBL1 integrates plant responses to abiotic stresses
The calcium sensor CBL1 integrates plant responses to abiotic stresses
Calcium ions represent both an integrative signal and an important convergence point of many disparate signaling pathways. Calcium-binding proteins, like calcineurin B-like (CBL) proteins, have been implicated as important relays in calcium signaling. Here, we report the in vivo study of CBL1 function in Arabidopsis. Analyses of loss-of-function as well as CBL1-overexpressing lines indicate a crucial function of this calcium sensor protein in abiotic stress responses. Mutation of CBL1 impairs plant responses to drought and salt stresses and affects gene expression of cold-regulated genes, but does not affect abscisic acid (ABA) responsiveness. Conversely, overexpression of CBL1 reduces transpirational water loss and induces the expression of early stress-responsive transcription factors and stress adaptation genes in non-stressed plants. Together, our data indicate that the calcium sensor protein CBL1 may constitute an integrative node in plant responses to abiotic stimuli and contributes to the regulation of early stress-related transcription factors of the C-Repeat-Binding Factor/dehydration-responsive element (CBF/DREB) type.
cbl1, stress response, drought stress, cold stress, salt stress, calcium signaling
0960-7412
457-470
Albrecht, Verónica
d954ab07-87ff-4467-87ab-2fda32fbfa57
Weinl, Stefan
2f78f0c7-3be9-4b12-8ddf-364731ab5071
Blazevic, Dragica
72f9b41e-d356-41dc-a13a-128e6043c3b5
D'Angelo, Cecilia
0d35b03b-684d-43aa-a57a-87212ab07ee1
Batistic, Oliver
e36a3a07-28aa-4549-87f9-88a791fdf1eb
Kolukisaoglu, Üner
1e1c872f-0012-453f-8256-23adfdc81afa
Bock, Ralph
ef49a695-9708-4ad3-9221-2a100b630f99
Schulz, Burkhard
aff757fe-0766-49ad-b25a-d446b9dd8a6a
Harter, Klaus
c05227a4-f56e-4e9c-8b2a-571130c1ecea
Kudla, Jörg
662352ce-945f-459d-9572-e8875d39b2f3
Albrecht, Verónica
d954ab07-87ff-4467-87ab-2fda32fbfa57
Weinl, Stefan
2f78f0c7-3be9-4b12-8ddf-364731ab5071
Blazevic, Dragica
72f9b41e-d356-41dc-a13a-128e6043c3b5
D'Angelo, Cecilia
0d35b03b-684d-43aa-a57a-87212ab07ee1
Batistic, Oliver
e36a3a07-28aa-4549-87f9-88a791fdf1eb
Kolukisaoglu, Üner
1e1c872f-0012-453f-8256-23adfdc81afa
Bock, Ralph
ef49a695-9708-4ad3-9221-2a100b630f99
Schulz, Burkhard
aff757fe-0766-49ad-b25a-d446b9dd8a6a
Harter, Klaus
c05227a4-f56e-4e9c-8b2a-571130c1ecea
Kudla, Jörg
662352ce-945f-459d-9572-e8875d39b2f3

Albrecht, Verónica, Weinl, Stefan, Blazevic, Dragica, D'Angelo, Cecilia, Batistic, Oliver, Kolukisaoglu, Üner, Bock, Ralph, Schulz, Burkhard, Harter, Klaus and Kudla, Jörg (2003) The calcium sensor CBL1 integrates plant responses to abiotic stresses. The Plant Journal, 36 (4), 457-470. (doi:10.1046/j.1365-313X.2003.01892.x). (PMID:14617077)

Record type: Article

Abstract

Calcium ions represent both an integrative signal and an important convergence point of many disparate signaling pathways. Calcium-binding proteins, like calcineurin B-like (CBL) proteins, have been implicated as important relays in calcium signaling. Here, we report the in vivo study of CBL1 function in Arabidopsis. Analyses of loss-of-function as well as CBL1-overexpressing lines indicate a crucial function of this calcium sensor protein in abiotic stress responses. Mutation of CBL1 impairs plant responses to drought and salt stresses and affects gene expression of cold-regulated genes, but does not affect abscisic acid (ABA) responsiveness. Conversely, overexpression of CBL1 reduces transpirational water loss and induces the expression of early stress-responsive transcription factors and stress adaptation genes in non-stressed plants. Together, our data indicate that the calcium sensor protein CBL1 may constitute an integrative node in plant responses to abiotic stimuli and contributes to the regulation of early stress-related transcription factors of the C-Repeat-Binding Factor/dehydration-responsive element (CBF/DREB) type.

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Published date: 2003
Keywords: cbl1, stress response, drought stress, cold stress, salt stress, calcium signaling
Organisations: Ocean and Earth Science

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Local EPrints ID: 349905
URI: https://eprints.soton.ac.uk/id/eprint/349905
ISSN: 0960-7412
PURE UUID: 81e11d8f-1c65-440e-8d8f-b61c8002e343

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Date deposited: 13 Mar 2013 12:58
Last modified: 16 Jul 2019 21:41

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Contributors

Author: Verónica Albrecht
Author: Stefan Weinl
Author: Dragica Blazevic
Author: Oliver Batistic
Author: Üner Kolukisaoglu
Author: Ralph Bock
Author: Burkhard Schulz
Author: Klaus Harter
Author: Jörg Kudla

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