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MdARF3 切换横向根延长以调节果植物的矮化

Jiahong Lv^1,2, Yi Feng^1,2, Longmei Zhai^1,2

¹Institute for Horticultural Plants, China Agricultural University, Beijing 100193, China.

Horticulture research

|May 6, 2024

概括

果根茎促进者的遗传变异解释了矮化. 在MdARF3促销器中的特定删除.

科学领域:

植物遗传学植物遗传学
分子生物学分子生物学
农业科学农业科学

背景情况:

果根茎变矮对于现代果园至关重要,但其遗传基础仍然不清楚.
了解矮化机制是开发改进果品种的关键.

研究的目的:

为了阐明果根茎矮化背后的遗传机制.
确定关键的基因和参与根茎生长和发展的调节元素.

主要方法:

在矮和强大的果根茎中对MdARF3基因表达的比较分析.
转基因烟草和果植物的生成,以研究ARF3的功能.
分子测试包括酵母一混合,化酶,EMSA和ChIP-qPCR,以调查基因相互作用.

主要成果:

在MdARF3促销者的WUSATAg元素中的删除与矮化根茎有关.
在转基因植物中,ARF3的过度表达导致了根长度和植物高度的增加.
MdWOX4-1与MdARF3促进体相互作用并影响转录活性,而MdARF3对MdLBD16-2转录产生负面调节.

结论:

这项研究确定了MdARF3中特定的促进体删除是果根茎变矮的关键因素.
MdARF3和MdLBD16-2的不同时间表达调节了横向根部的发育.
这些发现为矮果根茎的分子育种提供了洞察力.

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