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引用次数: 0
摘要
开花时间是直接影响大豆产量的关键农艺性状。APETALA1(AP1)和SUPPRESSOR OF OVEREXPRESSION OF CO 1(SOC1)都调控大豆的花期,但它们之间的遗传和调控关系尚未明确。在这里,我们报告了 AP1c 与两个 SOC1 蛋白(SOC1a 和 SOC1b)的物理相互作用,这些 SOC1 上调 AP1c 的表达,促进开花。此外,AP1c 通过直接与 SOC1s 启动子结合来抑制它们的表达,从而防止植物过早开花。这些发现表明,AP1c 和 SOC1s 形成了一个调节开花时间的反馈回路。重要的是,我们发现了一个在大豆驯化过程中被选择的特殊等位基因 AP1cG,它能促进栽培大豆的早花表型。总之,我们的研究发现了一个以前未知的等位基因组合,它可能对传统大豆育种和分子大豆育种都有用。
AP1c and SOC1 Form a Regulatory Feedback Loop to Regulate Flowering Time in Soybean.
Flowering time is a key agronomic trait that directly affects soybean yield. Both APETALA1 (AP1) and SUPPRESSOR OF OVEREXPRESSION OF CO 1 (SOC1) regulate flowering time in soybean, but their genetic and regulatory relationships have not been clarified. Here, we report that AP1c physically interacted with two SOC1 proteins, SOC1a and SOC1b, and that these SOC1s upregulated the expression of AP1c, promoting flowering. Moreover, AP1c repressed the expression of the SOC1s by directly binding to their promoters, thus preventing plants from flowering too early. These findings indicate that AP1c and SOC1s form a regulatory feedback loop that regulates flowering time. Importantly, we identified an exceptional allele, AP1cG, that was selected for during soybean domestication and promotes the early-flowering phenotype in cultivated soybean. Collectively, our work identifies a previously unknown allelic combination potentially useful for both classical and molecular soybean breeding.
期刊介绍:
Plant, Cell & Environment is a premier plant science journal, offering valuable insights into plant responses to their environment. Committed to publishing high-quality theoretical and experimental research, the journal covers a broad spectrum of factors, spanning from molecular to community levels. Researchers exploring various aspects of plant biology, physiology, and ecology contribute to the journal's comprehensive understanding of plant-environment interactions.