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Get Free AccessAbstract The expression of hundreds of genes is induced by low temperatures via a cold signaling pathway. ICE1, a MYC-type transcription factor, plays an important role in the induction of CBF3 / DREB1A to control cold-responsive genes and cold tolerance. To elucidate other molecular factors, a yeast 2-hybrid screening was performed. Two MYC-type transcription factors, MYC67 and MYC70, were identified as ICE1-interacting proteins. The myc mutants were more tolerant to freezing temperatures than wild type. CBF3 / DREB1A and other cold-responsive genes were up-regulated in the myc mutants. Overexpression of the MYC genes increased the cold sensitivity and down-regulated the expression of cold-responsive genes. The MYC proteins interacted with the cis- elements in the CBF3 / DREB1A promoter, probably to interfere interaction between ICE1 and the cis- elements. Taken together, these results demonstrate that MYC67 and MYC70, ICE1 interactors, negatively regulate cold-responsive genes and cold tolerance.
Masaru Ohta, Aiko Sato, Na Renhu, Tsuyoshi Yamamoto, Nodoka Oka, Jian Kang Zhu, Yasuomi Tada, Takuya Suzaki, Kenji Miura (2018). MYC-type transcription factors, MYC67 and MYC70, interact with ICE1 and negatively regulate cold tolerance in Arabidopsis. , 8(1), DOI: https://doi.org/10.1038/s41598-018-29722-x.
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Type
Article
Year
2018
Authors
9
Datasets
0
Total Files
0
Language
en
DOI
https://doi.org/10.1038/s41598-018-29722-x
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