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具有高花原蛋白生产的伴侣细胞表达其他小蛋白质,并显示出对敏感的FT抑制剂

Hiroshi Takagi^1,2,3,4, Shogo Ito^1,5, Jae Sung Shim^1,6

¹Department of Biology, University of Washington, Seattle, United States.

|October 30, 2025

概括

鉴定出了表达FLOWERING LOCUS T (FT) 基因的独特阿拉比多普西斯花细胞. 这些细胞产生多个信号,由NIGT1抑制剂调节,影响开花时间和植物发育.

科学领域:

植物分子生物学植物分子生物学
植物生理学植物生理学
遗传学遗传学是一个

背景情况:

精确的开花时间对于植物繁殖至关重要.
开花地点T (FT) 基因,一个关键的花原体,在长日条件下被诱导到特定的叶子花伴侣细胞中,在Arabidopsis.
这些FT表达细胞的分子身份在很大程度上是未知的.

研究的目的:

阐明Arabidopsis中FT表达的花伴侣细胞的分子特征.
确定涉及FT表达和开花控制的新基因和调控因素.
了解调节在花期中的作用.

主要方法:

大量核RNA测序 (RNA-seq) 和单核RNA测序 (snRNA-seq) 用于分析基因表达.
对表达FT的细胞与其他伴侣细胞进行了比较性转录基因分析.
进行了基因调节网络分析,包括转录因子结合动机丰富.

主要成果:

叶和真叶中的FT表达细胞表现出明显的FT抑制剂基因表达模式.
在真叶中发现了一组具有高FT表达的独特伴侣细胞集群.
这一群共同表达了FLP1和BFT等基因,它们的促进体被丰富为NIGT1结合动机.
过度表达NIGT1.2和NIGT1.4抑制了FT表达和延迟开花,特别是在富含的条件下,表明作为依赖的FT抑制剂的作用.

结论:

独特的FT-表达的体伴侣细胞具有独特的分子特征.
这些细胞可能会产生多个系统信号,调节植物生长和发育.
NIGT1转录因子作为依赖的FT抑制剂,将的可用性与开花时间联系起来.

关键词:

A. 塔利安娜塔利安娜塔利安娜 FT 和 TFL1 的兄弟.开花的地方T T LOCUS T 酸盐可诱导的GARP类型的转录复制器 1 一个单核RNA-seqq.摄影周期性开花的花期.植物生物学植物生物学

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