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生物钟关联基因1通过直接抑制小白菜中[具体基因名称缺失]的转录来延迟开花。

CIRCADIAN CLOCK-ASSOCIATED1 Delays Flowering by Directly Inhibiting the Transcription of in Pak-choi.

作者信息

He Ying, Xiao Dong, Jiang Cheng, Li Yiran, Hou Xilin

机构信息

National Key Laboratory of Crop Genetics & Germplasm Innovation and Utilization, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (East China), Ministry of Agriculture and Rural Affairs of China, Engineering Research Center of Germplasm Enhancement and Utilization of Horticultural Crops, Ministry of Education of China, Nanjing Agricultural University, Nanjing 210095, China.

Nanjing Suman Plasma Engineering Research Institute Co., Ltd., Nanjing 211162, China.

出版信息

Plants (Basel). 2024 Aug 8;13(16):2190. doi: 10.3390/plants13162190.

DOI:10.3390/plants13162190
PMID:39204626
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11359169/
Abstract

Flowering is critical to the success of plant propagation. The MYB family transcription factor () is an essential component of the core loop of the circadian clock and plays a crucial role in regulating plant flowering time. In this study, we found that photoperiod affects the expression pattern and expression level of , which is delayed flowering time under short-day conditions in Pak-choi [ (. ) ssp. ]. We detected overexpression and silencing of in Pak-choi, resulting in delayed and promoted flowering time, respectively. Furthermore, we also discovered that () and () were expressed significantly differently in overexpression and silencing plants compared with control plants. Therefore, we further investigated the interaction relationship between , , and , and the results showed that and as a complex interacted with each other. Moreover, both BcCCA1 and BcFLC can directly bind to the promoter of and repress its transcription, and BcCCA1 can form a complex with BcFLC to enhance the transcriptional inhibition of by BcFLC. This study reveals a new mechanism by which the circadian clock regulates flowering time.

摘要

开花对于植物繁殖的成功至关重要。MYB家族转录因子（）是生物钟核心环路的重要组成部分，在调节植物开花时间方面起着关键作用。在本研究中，我们发现光周期会影响的表达模式和表达水平，在小白菜[（.）亚种]的短日条件下，其开花时间会延迟。我们检测了小白菜中的过表达和沉默情况，分别导致开花时间延迟和提前。此外，我们还发现，与对照植株相比，在过表达和沉默植株中，（）和（）的表达存在显著差异。因此，我们进一步研究了、和之间的相互作用关系，结果表明和作为一个复合体相互作用。此外，BcCCA1和BcFLC都可以直接结合到的启动子上并抑制其转录，并且BcCCA1可以与BcFLC形成复合体，增强BcFLC对的转录抑制作用。本研究揭示了生物钟调节开花时间的一种新机制。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f27b/11359169/afb5bf26ca73/plants-13-02190-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f27b/11359169/4cc9a8b69ca5/plants-13-02190-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f27b/11359169/5292ebb0b414/plants-13-02190-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f27b/11359169/4e49e2b21e56/plants-13-02190-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f27b/11359169/220fa0d6db97/plants-13-02190-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f27b/11359169/e408b01bbd1d/plants-13-02190-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f27b/11359169/afb5bf26ca73/plants-13-02190-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f27b/11359169/4cc9a8b69ca5/plants-13-02190-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f27b/11359169/5292ebb0b414/plants-13-02190-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f27b/11359169/4e49e2b21e56/plants-13-02190-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f27b/11359169/220fa0d6db97/plants-13-02190-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f27b/11359169/e408b01bbd1d/plants-13-02190-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f27b/11359169/afb5bf26ca73/plants-13-02190-g006.jpg

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本文引用的文献

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Plant Physiol. 2024 May 31;195(2):986-1004. doi: 10.1093/plphys/kiae021.
2
Regulation of Flowering Time by Environmental Factors in Plants.植物中环境因子对开花时间的调控
Plants (Basel). 2023 Oct 25;12(21):3680. doi: 10.3390/plants12213680.
3
Myb-like transcription factors have epistatic effects on circadian clock function but additive effects on plant growth.
Myb 样转录因子对生物钟功能具有上位效应，但对植物生长具有累加效应。
Plant Direct. 2023 Oct 6;7(10):e533. doi: 10.1002/pld3.533. eCollection 2023 Oct.
4
Environmental F actors coordinate circadian clock function and rhythm to regulate plant development.环境因子协调生物钟功能和节律，以调节植物发育。
Plant Signal Behav. 2023 Dec 31;18(1):2231202. doi: 10.1080/15592324.2023.2231202.
5
Genome-wide identification and characterization of mungbean CIRCADIAN CLOCK ASSOCIATED 1 like genes reveals an important role of VrCCA1L26 in flowering time regulation.全基因组鉴定和 characterization 绿豆 CIRCADIAN CLOCK ASSOCIATED 1 样基因揭示了 VrCCA1L26 在开花时间调控中的重要作用。
BMC Genomics. 2022 May 17;23(1):374. doi: 10.1186/s12864-022-08620-7.
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