OsLHY is involved in regulating flowering through the Hd1- and Ehd1- mediated pathways in rice (Oryza sativa L.)

Copyright © 2021 Elsevier B.V. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant science : an international journal of experimental plant biology. - 1985. - 315(2022) vom: 24. Feb., Seite 111145
1. Verfasser: Li, Chao (VerfasserIn)
Weitere Verfasser: Liu, Xue-Jiao, Yan, Yan, Alam, Mohammad Shah, Liu, Zhen, Yang, Zhen-Kun, Tao, Ruo-Fu, Yue, Er-Kui, Duan, Ming-Hua, Xu, Jian-Hong
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Plant science : an international journal of experimental plant biology
Schlagworte:Journal Article Circadian clock Flowering OsLHY Photoperiod pathway Rice (Oryza sativa) Plant Proteins
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520 |a Flowering time (or heading date in crops) is a critical agronomic trait for rice reproduction and adaptation. The circadian clock is an endogenous oscillator that is involved in controlling photoperiodic flowering. The rice LATE ELONGATED HYPOCOTYL (OsLHY), the core oscillator component of circadian clock, is a homolog of the LHY/CCA1 in Arabidopsis. Here we showed that CRISPR/Cas9-engineered mutations in OsLHY caused late flowering in rice only under natural long-day (nLD) and short-day (nSD) conditions, but not artificial SD (10 h light/14 h dark) conditions. In the oslhy mutant, the diurnal expression of circadian clock-related genes was seriously affected under both LD and SD conditions. Furthermore, the expression of the flowering activators Ehd1, Hd3a and RFT1 was down-regulated and flowering repressors Hd1 and Ghd7 was up-regulated in the oslhy mutant under LD conditions. While the transcripts of flowering-related genes were not dramatically influenced under SD conditions. Dual-luciferase assays showed that OsLHY repressed the transcription of OsGI, Hd1, Ghd7, Hd3a, RFT1 and OsELF3, and activated the transcription of Ehd1. Moreover, the yeast one hybrid assay and electrophoretic mobility shift assay confirmed that OsLHY directly repressed OsGI, RFT1 and OsELF3 by binding to their promoters, which is consistent with that in Arabidopsis. These results suggested that the OsLHY can promote rice flowering mainly through regulating Hd1 and Ehd1 
650 4 |a Journal Article 
650 4 |a Circadian clock 
650 4 |a Flowering 
650 4 |a OsLHY 
650 4 |a Photoperiod pathway 
650 4 |a Rice (Oryza sativa) 
650 7 |a Plant Proteins  |2 NLM 
700 1 |a Liu, Xue-Jiao  |e verfasserin  |4 aut 
700 1 |a Yan, Yan  |e verfasserin  |4 aut 
700 1 |a Alam, Mohammad Shah  |e verfasserin  |4 aut 
700 1 |a Liu, Zhen  |e verfasserin  |4 aut 
700 1 |a Yang, Zhen-Kun  |e verfasserin  |4 aut 
700 1 |a Tao, Ruo-Fu  |e verfasserin  |4 aut 
700 1 |a Yue, Er-Kui  |e verfasserin  |4 aut 
700 1 |a Duan, Ming-Hua  |e verfasserin  |4 aut 
700 1 |a Xu, Jian-Hong  |e verfasserin  |4 aut 
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773 1 8 |g volume:315  |g year:2022  |g day:24  |g month:02  |g pages:111145 
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