Cargando…
Role of CBFs as Integrators of Chloroplast Redox, Phytochrome and Plant Hormone Signaling during Cold Acclimation
Cold acclimation of winter cereals and other winter hardy species is a prerequisite to increase subsequent freezing tolerance. Low temperatures upregulate the expression of C-repeat/dehydration-responsive element binding transcription factors (CBF/DREB1) which in turn induce the expression of COLD-R...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Molecular Diversity Preservation International (MDPI)
2013
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3709810/ https://www.ncbi.nlm.nih.gov/pubmed/23778089 http://dx.doi.org/10.3390/ijms140612729 |
_version_ | 1782276808717107200 |
---|---|
author | Kurepin, Leonid V. Dahal, Keshav P. Savitch, Leonid V. Singh, Jas Bode, Rainer Ivanov, Alexander G. Hurry, Vaughan Hüner, Norman P. A. |
author_facet | Kurepin, Leonid V. Dahal, Keshav P. Savitch, Leonid V. Singh, Jas Bode, Rainer Ivanov, Alexander G. Hurry, Vaughan Hüner, Norman P. A. |
author_sort | Kurepin, Leonid V. |
collection | PubMed |
description | Cold acclimation of winter cereals and other winter hardy species is a prerequisite to increase subsequent freezing tolerance. Low temperatures upregulate the expression of C-repeat/dehydration-responsive element binding transcription factors (CBF/DREB1) which in turn induce the expression of COLD-REGULATED (COR) genes. We summarize evidence which indicates that the integration of these interactions is responsible for the dwarf phenotype and enhanced photosynthetic performance associated with cold-acclimated and CBF-overexpressing plants. Plants overexpressing CBFs but grown at warm temperatures mimic the cold-tolerant, dwarf, compact phenotype; increased photosynthetic performance; and biomass accumulation typically associated with cold-acclimated plants. In this review, we propose a model whereby the cold acclimation signal is perceived by plants through an integration of low temperature and changes in light intensity, as well as changes in light quality. Such integration leads to the activation of the CBF-regulon and subsequent upregulation of COR gene and GA 2-oxidase (GA2ox) expression which results in a dwarf phenotype coupled with increased freezing tolerance and enhanced photosynthetic performance. We conclude that, due to their photoautotrophic nature, plants do not rely on a single low temperature sensor, but integrate changes in light intensity, light quality, and membrane viscosity in order to establish the cold-acclimated state. CBFs appear to act as master regulators of these interconnecting sensing/signaling pathways. |
format | Online Article Text |
id | pubmed-3709810 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Molecular Diversity Preservation International (MDPI) |
record_format | MEDLINE/PubMed |
spelling | pubmed-37098102013-07-12 Role of CBFs as Integrators of Chloroplast Redox, Phytochrome and Plant Hormone Signaling during Cold Acclimation Kurepin, Leonid V. Dahal, Keshav P. Savitch, Leonid V. Singh, Jas Bode, Rainer Ivanov, Alexander G. Hurry, Vaughan Hüner, Norman P. A. Int J Mol Sci Review Cold acclimation of winter cereals and other winter hardy species is a prerequisite to increase subsequent freezing tolerance. Low temperatures upregulate the expression of C-repeat/dehydration-responsive element binding transcription factors (CBF/DREB1) which in turn induce the expression of COLD-REGULATED (COR) genes. We summarize evidence which indicates that the integration of these interactions is responsible for the dwarf phenotype and enhanced photosynthetic performance associated with cold-acclimated and CBF-overexpressing plants. Plants overexpressing CBFs but grown at warm temperatures mimic the cold-tolerant, dwarf, compact phenotype; increased photosynthetic performance; and biomass accumulation typically associated with cold-acclimated plants. In this review, we propose a model whereby the cold acclimation signal is perceived by plants through an integration of low temperature and changes in light intensity, as well as changes in light quality. Such integration leads to the activation of the CBF-regulon and subsequent upregulation of COR gene and GA 2-oxidase (GA2ox) expression which results in a dwarf phenotype coupled with increased freezing tolerance and enhanced photosynthetic performance. We conclude that, due to their photoautotrophic nature, plants do not rely on a single low temperature sensor, but integrate changes in light intensity, light quality, and membrane viscosity in order to establish the cold-acclimated state. CBFs appear to act as master regulators of these interconnecting sensing/signaling pathways. Molecular Diversity Preservation International (MDPI) 2013-06-18 /pmc/articles/PMC3709810/ /pubmed/23778089 http://dx.doi.org/10.3390/ijms140612729 Text en © 2013 by the authors; licensee MDPI, Basel, Switzerland This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Review Kurepin, Leonid V. Dahal, Keshav P. Savitch, Leonid V. Singh, Jas Bode, Rainer Ivanov, Alexander G. Hurry, Vaughan Hüner, Norman P. A. Role of CBFs as Integrators of Chloroplast Redox, Phytochrome and Plant Hormone Signaling during Cold Acclimation |
title | Role of CBFs as Integrators of Chloroplast Redox, Phytochrome and Plant Hormone Signaling during Cold Acclimation |
title_full | Role of CBFs as Integrators of Chloroplast Redox, Phytochrome and Plant Hormone Signaling during Cold Acclimation |
title_fullStr | Role of CBFs as Integrators of Chloroplast Redox, Phytochrome and Plant Hormone Signaling during Cold Acclimation |
title_full_unstemmed | Role of CBFs as Integrators of Chloroplast Redox, Phytochrome and Plant Hormone Signaling during Cold Acclimation |
title_short | Role of CBFs as Integrators of Chloroplast Redox, Phytochrome and Plant Hormone Signaling during Cold Acclimation |
title_sort | role of cbfs as integrators of chloroplast redox, phytochrome and plant hormone signaling during cold acclimation |
topic | Review |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3709810/ https://www.ncbi.nlm.nih.gov/pubmed/23778089 http://dx.doi.org/10.3390/ijms140612729 |
work_keys_str_mv | AT kurepinleonidv roleofcbfsasintegratorsofchloroplastredoxphytochromeandplanthormonesignalingduringcoldacclimation AT dahalkeshavp roleofcbfsasintegratorsofchloroplastredoxphytochromeandplanthormonesignalingduringcoldacclimation AT savitchleonidv roleofcbfsasintegratorsofchloroplastredoxphytochromeandplanthormonesignalingduringcoldacclimation AT singhjas roleofcbfsasintegratorsofchloroplastredoxphytochromeandplanthormonesignalingduringcoldacclimation AT boderainer roleofcbfsasintegratorsofchloroplastredoxphytochromeandplanthormonesignalingduringcoldacclimation AT ivanovalexanderg roleofcbfsasintegratorsofchloroplastredoxphytochromeandplanthormonesignalingduringcoldacclimation AT hurryvaughan roleofcbfsasintegratorsofchloroplastredoxphytochromeandplanthormonesignalingduringcoldacclimation AT hunernormanpa roleofcbfsasintegratorsofchloroplastredoxphytochromeandplanthormonesignalingduringcoldacclimation |