Protein phosphatase type 2C PP2CA together with ABI1 inhibits SnRK2.4 activity and regulates plant responses to salinity

Protein phosphatases 2C (PP2Cs) are important regulators of plant responses to abiotic stress. It is established that clade A PP2Cs inhibit ABA-activated SNF1-related protein kinases 2 (SnRK2s). Our recently published results show that ABI1, a member of clade A of PP2C is also a negative regulator o...

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Autores principales: Krzywińska, Ewa, Kulik, Anna, Bucholc, Maria, Fernandez, Maria A., Rodriguez, Pedro L., Dobrowolska, Grażyna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Taylor & Francis 2016
Materias:
Short Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5225939/
https://www.ncbi.nlm.nih.gov/pubmed/27901636
http://dx.doi.org/10.1080/15592324.2016.1253647
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author Krzywińska, Ewa
Kulik, Anna
Bucholc, Maria
Fernandez, Maria A.
Rodriguez, Pedro L.
Dobrowolska, Grażyna
author_facet Krzywińska, Ewa
Kulik, Anna
Bucholc, Maria
Fernandez, Maria A.
Rodriguez, Pedro L.
Dobrowolska, Grażyna
author_sort Krzywińska, Ewa
collection PubMed
description Protein phosphatases 2C (PP2Cs) are important regulators of plant responses to abiotic stress. It is established that clade A PP2Cs inhibit ABA-activated SNF1-related protein kinases 2 (SnRK2s). Our recently published results show that ABI1, a member of clade A of PP2C is also a negative regulator of SnRK2.4, a kinase not activated in response to ABA. Here, we show that another member of this clade - PP2CA, interacts with and inhibits SnRK2.4. The salt-induced SnRK2.4/SnRK2.10 activity is higher in abi1–2 pp2ca-1 mutant than in wild type or single abi1 or pp2ca mutants, indicating that both phosphatases are inhibitors of SnRK2.4 and are at least partially redundant. Moreover, PP2CA together with ABI1 and SnRK2.4 regulates root growth in response to salinity.
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spelling pubmed-52259392017-02-02 Protein phosphatase type 2C PP2CA together with ABI1 inhibits SnRK2.4 activity and regulates plant responses to salinity Krzywińska, Ewa Kulik, Anna Bucholc, Maria Fernandez, Maria A. Rodriguez, Pedro L. Dobrowolska, Grażyna Plant Signal Behav Short Communication Protein phosphatases 2C (PP2Cs) are important regulators of plant responses to abiotic stress. It is established that clade A PP2Cs inhibit ABA-activated SNF1-related protein kinases 2 (SnRK2s). Our recently published results show that ABI1, a member of clade A of PP2C is also a negative regulator of SnRK2.4, a kinase not activated in response to ABA. Here, we show that another member of this clade - PP2CA, interacts with and inhibits SnRK2.4. The salt-induced SnRK2.4/SnRK2.10 activity is higher in abi1–2 pp2ca-1 mutant than in wild type or single abi1 or pp2ca mutants, indicating that both phosphatases are inhibitors of SnRK2.4 and are at least partially redundant. Moreover, PP2CA together with ABI1 and SnRK2.4 regulates root growth in response to salinity. Taylor & Francis 2016-11-30 /pmc/articles/PMC5225939/ /pubmed/27901636 http://dx.doi.org/10.1080/15592324.2016.1253647 Text en © 2016 The Author(s). Published with license by Taylor & Francis Group, LLC http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.
spellingShingle Short Communication
Krzywińska, Ewa
Kulik, Anna
Bucholc, Maria
Fernandez, Maria A.
Rodriguez, Pedro L.
Dobrowolska, Grażyna
Protein phosphatase type 2C PP2CA together with ABI1 inhibits SnRK2.4 activity and regulates plant responses to salinity
title Protein phosphatase type 2C PP2CA together with ABI1 inhibits SnRK2.4 activity and regulates plant responses to salinity
title_full Protein phosphatase type 2C PP2CA together with ABI1 inhibits SnRK2.4 activity and regulates plant responses to salinity
title_fullStr Protein phosphatase type 2C PP2CA together with ABI1 inhibits SnRK2.4 activity and regulates plant responses to salinity
title_full_unstemmed Protein phosphatase type 2C PP2CA together with ABI1 inhibits SnRK2.4 activity and regulates plant responses to salinity
title_short Protein phosphatase type 2C PP2CA together with ABI1 inhibits SnRK2.4 activity and regulates plant responses to salinity
title_sort protein phosphatase type 2c pp2ca together with abi1 inhibits snrk2.4 activity and regulates plant responses to salinity
topic Short Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5225939/
https://www.ncbi.nlm.nih.gov/pubmed/27901636
http://dx.doi.org/10.1080/15592324.2016.1253647
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