Innovations and stepwise evolution of CBFs/DREB1s and their regulatory networks in angiosperms

文献类型： 外文期刊

第一作者： Nie, Yuqi

作者： Nie, Yuqi;Guo, Liangyu;Cui, Fuqiang;Shen, Yirong;Deng, Deyin;Wang, Shuo;Wu, Wenwu;Ye, Xiaoxue;Zhu, Jianhua;Zhu, Jianhua

作者机构：

关键词： CBF; DREB1; cold acclimation; global cooling; ice age; K-Pg boundary; paleotemperature; tandem duplication (TD); whole genome duplication (WGD)

期刊名称：JOURNAL OF INTEGRATIVE PLANT BIOLOGY （ 影响因子：9.106； 五年影响因子：8.241 ）

ISSN： 1672-9072

年卷期： 2022 年 64 卷 11 期

页码：

收录情况： SCI

摘要： The C-repeat binding factors/dehydration-responsive element binding protein 1s (CBFs/DREB1s) have been identified as major regulators of cold acclimation in many angiosperm plants. However, their origin and evolutionary process associated to cold responsiveness are still lacking. By integrating multi-omics data of genomes, transcriptomes, and CBFs/DREB1s genome-wide binding profiles, we unveil the origin and evolution of CBFs/DREB1s and their regulatory network. Gene collinearity and phylogeny analyses show that CBF/DREB1 is an innovation evolved from tandem duplication-derived DREB III gene. A subsequent event of epsilon-whole genome duplication led to two CBF/DREB1 archetypes (Clades I and II) in ancient angiosperms. In contrast to cold-insensitivity of Clade I and their parent DREB III genes, Clade II evolved a further innovation in cold-sensitive response and was stepwise expanded in eudicots and monocots by independent duplications. In geological time, the duplication events were mainly enriched around the Cretaceous-Paleogene (K-Pg) boundary and/or in the Late Cenozoic Ice Age, when the global average temperature significantly decreased. Consequently, the duplicated CBF/DREB1 genes contributed to the rewiring of CBFs/DREB1s-regulatory network for cold tolerance. Altogether, our results highlight an origin and convergent evolution of CBFs/DREB1s and their regulatory network probably for angiosperms adaptation to global cooling.

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