Arabidopsis ESK1 encodes a novel regulator of freezing tolerance
Summary The eskimo1 ( esk1 ) mutation of Arabidopsis resulted in a 5.5°C improvement in freezing tolerance in the absence of cold acclimation. Here we show that the increase in freezing tolerance is not associated with any increase in the ability to survive drought or salt stresses, which are simila...
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crwiley:10.1111/j.1365-313x.2006.02994.x 2024-06-23T07:52:32+00:00 Arabidopsis ESK1 encodes a novel regulator of freezing tolerance Xin, Zhanguo Mandaokar, Ajin Chen, Junping Last, Robert L. Browse, John 2007 http://dx.doi.org/10.1111/j.1365-313x.2006.02994.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-313X.2006.02994.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-313X.2006.02994.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor The Plant Journal volume 49, issue 5, page 786-799 ISSN 0960-7412 1365-313X journal-article 2007 crwiley https://doi.org/10.1111/j.1365-313x.2006.02994.x 2024-06-13T04:22:40Z Summary The eskimo1 ( esk1 ) mutation of Arabidopsis resulted in a 5.5°C improvement in freezing tolerance in the absence of cold acclimation. Here we show that the increase in freezing tolerance is not associated with any increase in the ability to survive drought or salt stresses, which are similar to freezing in their induction of cellular dehydration. Genome‐wide comparisons of gene expression between esk1‐1 and wild type indicate that mutations at esk1 result in altered expression of transcription factors and signaling components and of a set of stress‐responsive genes. Interestingly, the list of 312 genes regulated by ESK1 shows greater overlap with sets of genes regulated by salt, osmotic and abscisic acid treatments than with genes regulated by cold acclimation or by the transcription factors CBF3 and ICE1, which have been shown to control genetic pathways for freezing tolerance. Map‐based cloning identified the esk1 locus as At3g55990 . The wild‐type ESK1 gene encodes a 57‐kDa protein and is a member of a large gene family of DUF231 domain proteins whose members encode a total of 45 proteins of unknown function. Our results indicate that ESK1 is a novel negative regulator of cold acclimation. Mutations in the ESK1 gene provide strong freezing tolerance through genetic regulation that is apparently very different from previously described genetic mechanisms of cold acclimation. Article in Journal/Newspaper eskimo* Wiley Online Library The Plant Journal 49 5 786 799 |
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Wiley Online Library |
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English |
description |
Summary The eskimo1 ( esk1 ) mutation of Arabidopsis resulted in a 5.5°C improvement in freezing tolerance in the absence of cold acclimation. Here we show that the increase in freezing tolerance is not associated with any increase in the ability to survive drought or salt stresses, which are similar to freezing in their induction of cellular dehydration. Genome‐wide comparisons of gene expression between esk1‐1 and wild type indicate that mutations at esk1 result in altered expression of transcription factors and signaling components and of a set of stress‐responsive genes. Interestingly, the list of 312 genes regulated by ESK1 shows greater overlap with sets of genes regulated by salt, osmotic and abscisic acid treatments than with genes regulated by cold acclimation or by the transcription factors CBF3 and ICE1, which have been shown to control genetic pathways for freezing tolerance. Map‐based cloning identified the esk1 locus as At3g55990 . The wild‐type ESK1 gene encodes a 57‐kDa protein and is a member of a large gene family of DUF231 domain proteins whose members encode a total of 45 proteins of unknown function. Our results indicate that ESK1 is a novel negative regulator of cold acclimation. Mutations in the ESK1 gene provide strong freezing tolerance through genetic regulation that is apparently very different from previously described genetic mechanisms of cold acclimation. |
format |
Article in Journal/Newspaper |
author |
Xin, Zhanguo Mandaokar, Ajin Chen, Junping Last, Robert L. Browse, John |
spellingShingle |
Xin, Zhanguo Mandaokar, Ajin Chen, Junping Last, Robert L. Browse, John Arabidopsis ESK1 encodes a novel regulator of freezing tolerance |
author_facet |
Xin, Zhanguo Mandaokar, Ajin Chen, Junping Last, Robert L. Browse, John |
author_sort |
Xin, Zhanguo |
title |
Arabidopsis ESK1 encodes a novel regulator of freezing tolerance |
title_short |
Arabidopsis ESK1 encodes a novel regulator of freezing tolerance |
title_full |
Arabidopsis ESK1 encodes a novel regulator of freezing tolerance |
title_fullStr |
Arabidopsis ESK1 encodes a novel regulator of freezing tolerance |
title_full_unstemmed |
Arabidopsis ESK1 encodes a novel regulator of freezing tolerance |
title_sort |
arabidopsis esk1 encodes a novel regulator of freezing tolerance |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1111/j.1365-313x.2006.02994.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-313X.2006.02994.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-313X.2006.02994.x |
genre |
eskimo* |
genre_facet |
eskimo* |
op_source |
The Plant Journal volume 49, issue 5, page 786-799 ISSN 0960-7412 1365-313X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-313x.2006.02994.x |
container_title |
The Plant Journal |
container_volume |
49 |
container_issue |
5 |
container_start_page |
786 |
op_container_end_page |
799 |
_version_ |
1802643862938714112 |