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在IbMYB52/IbARF11L-IbDRM1模块负面调节甜的根部发展

Chengyang Li¹, Weihan Song¹, Dandan Wang¹

¹Key Laboratory of Biology and Genetic Breeding of Sweet potato, Ministry of Agriculture and Rural Affairs / Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District / Sweetpotato Research Institute, CAAS, Xuzhou, 221131, Jiangsu, China.

Plant physiology and biochemistry : PPB

|July 20, 2025

概括

基因模块IbMYB52/IbARF11L-IbDRM1负面调节了甜的根部发育. 这一发现提供了通过遗传育种改善甜产量和质量的关键基因.

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
农业科学农业科学

背景情况:

储存甜 (Ipomoea batatas) 的根形成和发展对于产量和质量至关重要.
天然的奥辛 indole-3-acetic acid (IAA) 是一种调节根部发育的关键激素.
IbDRM1基因在根部发育中的作用以前是由差异性表达模式提出的.

研究的目的:

阐明IBDRM1在调节甜根发育中的分子机制.
确定参与IBDRM1-介导根生长控制的调节因素和途径.
探索已识别的基因对甜基因改进的潜力.

主要方法:

在野生型,IBDRM1过度表达和RNA干扰线上进行基因表达分析 (RT-qPCR).
激素含量分析 (IAA).
使用促进体结合试验和蛋白质相互作用研究分析基因相互作用.

主要成果:

过度表达IbDRM1抑制了根部发育并降低了IAA含量,而RNA干扰线则表现出相反的效果.
IbMYB52直接与IBDRM1促进体结合,增强其表达,导致IAA含量增加和根部发育受阻.
IbARF11L与IBMYB52相互作用,进一步促进IBDRM1的转录.

结论:

IbMYB52/IbARF11L-IbDRM1模块作为甜根发展的负调节器.
这种调节途径提供了对甜根生长复杂控制的见解.
这些已识别的基因代表了旨在增强甜根发育和产量的育种计划的潜在目标.

关键词:

一个辅助的Auxin.在 IbARF11L.在 IbDRM1 中.在 IbMYB52 里.根源发展根源发展甜是一种甜.

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