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WRKY10通过Arabidopsis thaliana中的miR397a-LAC2模块调节种子大小

Wenbin Guo^1,2,3,4, Ke Yang^1,2,3,4, Hang Ye¹

¹College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.

|August 29, 2024

概括

HAIKU (IKU) 途径调节了阿拉比多普西斯种子的大小. WRKY10激活了miR397a,它可以抑制LACCASE2 (LAC2). 这个WRKY10-miR397a-LAC2通路控制着种子的大小.

科学领域:

植物生物学植物生物学
分子遗传学分子遗传学
发育生物学发展生物学

背景情况:

种子大小是血管苗的关键特征,受内和种子外相互作用的影响.
众所周知,涉及WRKY10的HAIKU (IKU) 途径调节了Arabidopsis thaliana种子的大小.
在种子大小监管中,WRKY10的下游目标尚不清楚.

研究的目的:

为了确定涉及种子大小确定中的WRKY10下游目标.
为了阐明LACCASE2 (LAC2) 在Arabidopsis种子发育中的调节机制.
为了发现新的WRKY10-miR397a-LAC2调节通路.

主要方法:

在Arabidopsis突变体中进行基因表达分析.
染色体免疫沉测试以评估WRKY10与miR397a促进体的结合.
对LAC2突变和miR397a过度表达的遗传分析.
在野生型和突变系中测量种子大小.

主要成果:

LACCASE2 (LAC2) 被确定为WRKY10.0的下游目标.
WRKY10直接激活miR397a的表达,这反过来抑制LAC2.2.
在LAC2的突变或miR397a的过度表达部分拯救了mini3突变的小种子表型.
野生型植物中LAC2的过度表达导致了较小的种子.

结论:

在阿拉比多普西斯中,LAC2作为种子大小的负调节剂.
WRKY10-miR397a-LAC2通路是一种控制种子大小的新型调节机制.
这项研究为管理植物种子发育的遗传网络提供了新的见解.

关键词:

这就是 IKU IKU 的意思.拉卡斯案件拉卡斯案件精子末端的精子.在 miR397a 中使用.种子大小种子大小

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