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The cbfs triple mutants reveal the essential functions of CBF s in cold acclimation and allow the definition of CBF regulons in Arabidopsis

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Jia, Yuxin, Ding, Yanglin, Shi, Yiting, Zhang, Xiaoyan, Gong, Zhizhong, Yang, Shuhua·2016·New Phytologist

Abstract

Summary: In Arabidopsis, the C‐repeat binding factors (CBF s) have been extensively studied as key transcription factors in the cold stress response. However, their exact functions in the cold response remains unclear due to the lack of a null cbf triple mutant. In this study, we used CRISPR/Cas9 technology to mutate CBF 1 or CBF 1/CBF 2 in a cbf3 T‐DNA insertion mutant to generate cbf1,3 double and cbf1 cbf2 cbf3 (cbfs) triple mutants. The response of the cbfs triple mutants to chilling stress is impaired. Furthermore, no significant difference in freezing tolerance was observed between the wild‐type and the cbf1,3 and cbfs mutants without cold acclimation. However, the cbfs mutants were extremely sensitive to freezing stress after cold acclimation, and freezing sensitivity ranking was cbfs > cbf1,3 > cbf3. RNA‐Seq analysis showed that 134 genes were CBF regulated, of which 112 were regulated positively and 22 negatively by CBF s. Our study reveals the essential functions of CBF s in chilling stress response and cold acclimation, as well as defines a set of genes as CBF regulon. It also provides materials for the genetic dissection of components in CBF‐dependent cold signaling.

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Metadata

Authors
Jia, Y., Ding, Y., Shi, Y., Zhang, X., Gong, Z., & Yang, S.
Venue
New Phytologist
Publisher
Wiley
Published
2016-06-29
Volume
212
Issue
2
Pages
345-353
ISSN
  • 0028-646X (ISSN-L)
  • 1469-8137
OpenAlex
W2472257420
Cited by
481
References
6
FWCI
29.93
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: The cbfs triple mutants reveal the essential functions of CBF s in cold acclimation and allow the definition of CBF regulons in Arabidopsis. https://app.cochat.ai/papers/10.1111/nph.14088
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Jia, Y., Ding, Y., Shi, Y., Zhang, X., Gong, Z., & Yang, S. (2016). The cbfs triple mutants reveal the essential functions of CBF s in cold acclimation and allow the definition of CBF regulons in Arabidopsis. New Phytologist. https://doi.org/10.1111/nph.14088

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