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PpSPL1和PpSPL15通过增加strigolactone合成来抑制桃子的分枝

Wan Pei¹, Jie Zhang¹, Ruixian Shen¹

¹College of Horticulture, Henan Agricultural University, 218 Pingan Road, Zhengzhou, 450046, China.

|March 5, 2025

概括

桃子的分支受原蛋白结合蛋白样 (SPL) 基因 PpSPL1 和 PpSPL15.5 的抑制. 这些基因通过与PpLBO1基因结合来升高调节strigolactone (SL) 合成,控制树结构.

科学领域:

植物生物学植物生物学
遗传学遗传学是一个
农业科学农业科学

背景情况:

枝数是一个关键的农学特征,影响桃树的结构,产量和质量.
在调节植物架构 (包括桃子分枝) 中,SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (SPL) 转录因子的作用尚未完全被理解.

研究的目的:

调查SPL基因在桃子分枝的调节中的参与.
阐明SPL基因控制桃树结构的分子机制.

主要方法:

基因表达分析比较支柱和标准桃子类型.
染色体免疫沉 (ChIP) 测试用于确定基因结合.
在桃子下芽和幼苗中进行过渡性过度表达和沉默实验.
测量strigolactone (SL) 含量的方法.

主要成果:

PpSPL1和PpSPL15在支柱型桃子中表达更高,树枝较少.
PpSPL1和PpSPL15直接与strigolactone合成基因PpLBO1.1.的促进物结合.
过度表达PpSPL1和PpSPL15增加了PpLBO1表达和SL含量,抑制了分支;沉默有相反的效果.

结论:

PpSPL1和PpSPL15通过直接上调球蛋白合成基因PpLBO1.1的表达来抑制桃子的分支.
这些发现揭示了控制桃树结构的新机制,并为园艺实践提供了洞察力.

关键词:

这就是PpLBO1的原因.分支机构号码分支机构号码桃子是一种桃子.在PpSPLs中使用PpSPL.在这里,我们可以看到SL SL SL.

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