LUX ARRHYTHMO Interacts With ELF3a and ELF4a to Coordinate Vegetative Growth and Photoperiodic Flowering in Rice.
LUX ARRHYTHMO Interacts With ELF3a and ELF4a to Coordinate Vegetative Growth and Photoperiodic Flowering in Rice.
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LUX ARRHYTHMO 与 ELF3a 和 ELF4a 相互作用，协调水稻的营养生长和光周期开花
DOI：
10.3389/fpls.2022.853042
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发表时间：
2022
影响因子：
5.6
通讯作者：
Duan Y
中科院分区：
文献类型：
--
作者：
Cai Z;Zhang Y;Tang W;Chen X;Lin C;Liu Y;Ye Y;Wu W;Duan Y
傍晚复合体（EC）在拟南芥光期开花中起着关键作用。尽管如此，EC基因在水稻开花过程中各组分的潜在功能和协同调控机制仍有待阐明。在此，我们研究了LUX -心律失常（LUX）在水稻光周期感知和协调营养生长和开花中的关键作用。osux的非功能等位基因极大地延长了营养期，导致光周期不敏感的晚花期和籽粒产量的大幅提高。osux具有明显的昼夜节律表达，在黄昏达到表达高峰，并通过协调生物钟相关基因和光周期开花输出整合子的表达来促进水稻开花。OsLUX与OsELF4a、OsELF3a或OsELF3b结合形成两个ec，其中OsLUX-OsELF3a-OsELF4a可能是光周期开花的显性启动子。此外，OsELF4a对水稻开花也有促进作用。与OsLUX不同，OsELF4a的损失在短日（SD）条件下影响不大，但在长日（LD）条件下明显延迟开花时间。这些结果表明，水稻EC基因具有促进开花的功能。这与SD植物的同源物一致，而与LD物种的同源物相反。综上所述，水稻EC基因在光周期开花过程中表现出相似但不完全相同的功能，可能是通过调控基因表达来实现的。这些发现有助于我们了解植物，特别是SD作物的光周期开花。
The evening complex (EC) plays a critical role in photoperiod flowering in Arabidopsis. Nevertheless, the underlying functions of individual components and coordinate regulation mechanism of EC genes in rice flowering remain to be elucidated. Here, we characterized the critical role of LUX ARRHYTHMO (LUX) in photoperiod perception and coordinating vegetative growth and flowering in rice. Non-functional alleles of OsLUX extremely extended vegetative phase, leading to photoperiod-insensitive late flowering and great increase of grain yield. OsLUX displayed an obvious diurnal rhythm expression with the peak at dusk and promoted rice flowering via coordinating the expression of genes associated with the circadian clock and the output integrators of photoperiodic flowering. OsLUX combined with OsELF4a and OsELF3a or OsELF3b to form two ECs, of which the OsLUX-OsELF3a-OsELF4a was likely the dominant promoter for photoperiodic flowering. In addition, OsELF4a was also essential for promoting rice flowering. Unlike OsLUX, loss OsELF4a displayed a marginal influence under short-day (SD) condition, but markedly delayed flowering time under long-day (LD) condition. These results suggest that rice EC genes share the function of promoting flowering. This is agreement with the orthologs of SD plant, but opposite to the counterparts of LD species. Taken together, rice EC genes display similar but not identical function in photoperiodic flowering, probably through regulating gene expression cooperative and independent. These findings facilitate our understanding of photoperiodic flowering in plants, especially the SD crops.
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影响因子：
4.3
作者：
Fogelmark K;Troein C
通讯作者：
Troein C
DOI：
10.1073/pnas.2010241118
发表时间：
2021-02-23
影响因子：
11.1
作者：
Bu, Tiantian;Lu, Sijia;Kong, Fanjiang
通讯作者：
Kong, Fanjiang
影响因子：
3
作者：
Huang, He;Gehan, Malia A.;Nusinow, Dmitri A.
通讯作者：
Nusinow, Dmitri A.
影响因子：
64.8
作者：
Hayama, R;Yokoi, S;Shimamoto, K
通讯作者：
Shimamoto, K
影响因子：
64.8
作者：
Doyle, MR;Davis, SJ;Amasino, RM
通讯作者：
Amasino, RM