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番茄的开花取决于AP1/FUL类基因在生殖系统特征中的重叠功能

Xiaobing Jiang^1,2,3, Iris E Zahn¹, Kai Thoris¹

¹Laboratory of Molecular Biology, Wageningen University & Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, the Netherlands.

The New phytologist

|August 19, 2025

概括

在AP1/FUL-clade中的转录因子 (TF) 对开花时间至关重要. 在番茄中,MACROCALYX (MC),FRUITFULL2 (FUL2) 和MADS-BOX PROTEIN 20 (MBP20) TFs冗余地调节了花过渡和繁殖身份.

科学领域:

植物分子生物学植物分子生物学
发育遗传学的发展遗传学.
农业科学农业科学

背景情况:

AP1/FUL-clade转录因子 (TFs) 调节了开花的开始和进展.
在Arabidopsis中已知有明确的TF功能,但科植物之间的差异尚不清楚.
了解像番茄这样的作物中的这些TF对于农业应用至关重要.

研究的目的:

调查番茄AP1-正规基因MACROCALYX (MC) 和FUL-like基因FRUITFULL2 (FUL2) 和MADS-BOX PROTEIN 20 (MBP20) 的不同和重叠的功能.
阐明这些TFs在西红的花过渡和美里系统身份中的作用.
为了探索AP1/FUL-cladeTF功能的进化性保存在eudicot.

主要方法:

综合分子,遗传和基因组方法.
对基因表达模式的分析.
在番茄中对MC,FUL2和MBP20基因的突变分析.

主要成果:

类似AP1/FUL的TFs在初级和交芽中冗余地调节花过渡.
失去了MC,FUL2和MBP20的功能导致花期显著延迟.
在花和花花系统中,MC是主要的TF,其中FUL2和MBP20有所贡献;三重突变者失去花花系统的繁殖身份.
功能差异主要是由于表达水平,而不是DNA结合性质.
作为TFL1的正统类型的SP,受到MC的特别监管.

结论:

AP1/FUL-clade TFs的联合作用对于在番茄中建立和维持生殖活动至关重要.
这些发现突出了在不同作物中为开花和繁殖发展保留的调节机制.
了解这些TF网络可以为作物改进策略提供信息.

关键词:

像AP1/FUL这样的基因茄子番茄子番茄子花开的时候,花开的时候.花朵的发展,花朵的发育.生殖系统是生殖系统.

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