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Updated: Jan 13, 2026

Chromatin Immunoprecipitation Assay for the Identification of Arabidopsis Protein-DNA Interactions In Vivo

Chromatin Immunoprecipitation Assay for the Identification of Arabidopsis Protein-DNA Interactions In Vivo

Published on: January 14, 2016

阿拉比多opsis IDD14,IDD15和IDD16与DELLA蛋白相互作用,以负面调节开花的时间

Mei Ma¹, Jing Liu¹, Defeng Shu¹

¹Shandong Engineering Research Center of Rose Breeding Technology and Germplasm Innovation, School of Life Sciences, Qilu Normal University, Jinan, 250200, China.

The Plant journal : for cell and molecular biology

|January 10, 2026

概括

不确定的域 (IDD) 转录因子 (TFs) 在Arabidopsis中负面调节开花时间. 这些IDDTF抑制了花基因FLOWERING LOCUS T (FT),与DELLAs在吉伯雷林信号中相互作用.

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:

开花是一个关键的发展过程,在开花植物 (芽植物).
控制开花时间的精确分子机制尚未完全理解.
由DELLA蛋白调解的吉伯雷林信号传递是已知的开花时间的调节者.

研究的目的:

为了识别Arabidopsis.花期的新型调节者.
阐明INDETERMINATE DOMAIN (IDD) 转录因子在开花时间控制中的作用.
为了研究IDDs,DELLA蛋白和花基因FT之间的相互作用.

主要方法:

阿拉比多普西斯突变的遗传分析 (三重突变和功能增益突变).
基因表达分析 (RT-qPCR) 用于研究FT基因调节.
生物化学测试 (体外和体内) 用于确定蛋白质相互作用和DNA结合.

主要成果:

在IDD14,IDD15和IDD16中的功能丧失突变导致了早期开花.
在IDD14中获得功能突变导致花期延迟.
IDD14直接与FT促进体结合,抑制其表达.
IDD与DELLA互动,加强对外汇的镇压.
IDDs部分参与DELLA介导的开花时间调节.

结论:

一个IDDTF子家族作为Arabidopsis的开花时间的冗余负调节者.
IDDs作为DELLA介导的吉伯雷林信号传输的新型组件.
IDDs通过抑制FT基因的表达来抑制开花时间.

关键词:

阿拉比多普西斯塔利亚纳.德拉·德拉拉在这里.在FTT上,FTT就是FTT.在 GA 信号通路上.在IDD子家族中的IDD子家族.开花时间开花时间

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