The NF-YC-RGL2 module integrates GA and ABA signalling to regulate seed germination in Arabidopsis.

The NF-YC-RGL2 module integrates GA and ABA signalling to regulate seed germination in Arabidopsis.
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NF-YC-RGL2 模块整合 GA 和 ABA 信号传导来调节拟南芥种子萌发

DOI:
10.1038/ncomms12768
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发表时间:
2016-09-14
影响因子:
16.6
通讯作者:
Hou, Xingliang
Hou, Xingliang
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Liu, Xu;Hu, Pengwei;Huang, Mingkun;Tang, Yang;Li, Yuge;Li, Ling;Hou, Xingliang

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赤霉素酸(GA)和脱落酸(ABA)之间的拮抗串扰在种子萌发调控中起关键作用。然而,这种植物激素相互作用的分子机制在很大程度上仍然难以捉摸。本研究表明,拟南芥核因子- y - C (NF-YC)同源物NF-YC3、NF-YC4和NF-YC9可冗余调节GA-和aba介导的种子萌发。这些NF-YCs与DELLA蛋白RGL2相互作用,RGL2是GA信号传导的关键抑制因子。NF-YC-RGL2模块通过特定的CCAAT元件靶向编码ABA信号核心成分的基因ABI5,共同调控一组GA和ABA应答基因,从而控制萌发。这些结果表明,NF-YC-RGL2-ABI5模块在种子萌发过程中整合了GA和ABA信号通路。
The antagonistic crosstalk between gibberellic acid (GA) and abscisic acid (ABA) plays a pivotal role in the modulation of seed germination. However, the molecular mechanism of such phytohormone interaction remains largely elusive. Here we show that three Arabidopsis NUCLEAR FACTOR-Y C (NF-YC) homologues NF-YC3, NF-YC4 and NF-YC9 redundantly modulate GA- and ABA-mediated seed germination. These NF-YCs interact with the DELLA protein RGL2, a key repressor of GA signalling. The NF-YC–RGL2 module targets ABI5, a gene encoding a core component of ABA signalling, via specific CCAAT elements and collectively regulates a set of GA- and ABA-responsive genes, thus controlling germination. These results suggest that the NF-YC–RGL2–ABI5 module integrates GA and ABA signalling pathways during seed germination.
DOI: 10.1371/journal.pone.0042902
发表时间: 2012
期刊: PloS one
影响因子: 3.7
作者:
Calvenzani V;Testoni B;Gusmaroli G;Lorenzo M;Gnesutta N;Petroni K;Mantovani R;Tonelli C
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发表时间: 2006-05-01
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通讯作者: KARSSEN, CM