相关实验视频

Updated: Jul 2, 2025

An In Vitro Dormancy Model of Estrogen-sensitive Breast Cancer in the Bone Marrow: A Tool for Molecular Mechanism Studies and Hypothesis Generation

An In Vitro Dormancy Model of Estrogen-sensitive Breast Cancer in the Bone Marrow: A Tool for Molecular Mechanism Studies and Hypothesis Generation

Published on: June 30, 2015

转录组分析揭示了BR负调节因子StBIN2维持结核休眠的分子机制

Shifeng Liu^1,2, Chengcheng Cai^1,2, Liqin Li^1,2

¹College of Agronomy, Sichuan Agriculture University, Chengdu 611130, China.

International journal of molecular sciences

|February 24, 2024

概括

铜类固醇 (BRs) 可以打破土豆的休眠状态. 发现BR信号的负调节者StBIN2基因通过影响酸 (ABA) 信号和素合成来维持休眠状态.

科学领域:

植物生物学植物生物学
分子生物学分子生物学
激素信号传递激素信号传递

背景情况:

马茎在收获后进入休眠期,这是作物管理的关键阶段.
铜类固醇 (BRs) 是调节生长和发芽的植物激素,在的休眠状态中具有潜在的作用.
在土豆休眠期中,BR信号负调节器StBIN2的特定功能以前尚不清楚.

研究的目的:

为了研究铜类固醇 (BRs) 在打破土豆休眠中的作用.
阐明BR相关基因StBIN2在调节土豆休眠状态中的功能.
确定涉及StBIN2在维持结核休眠中的分子通路和相互作用.

主要方法:

应用500 nM BR来评估其对结核休眠期的影响.
转基因土豆带有改变StBIN2表达 (过度表达和RNA干扰) 的生成.
RNA测序 (RNA-Seq) 用于分析转基因结核中的基因表达变化.
蛋白与蛋白相互作用测试以确定StBIN2.2的结合伙伴.

主要成果:

外源性BR应用成功打破了结核休眠状态,并上调了BR信号基因,不包括StBIN2.2.
过度表达StBIN2延长了结核休眠期,而其沉默导致过早发芽.
发现StBIN2可以提高ABA信号基因的调节,并抑制素合成基因.
StBIN2与StSnRK2.2和StCCJ9蛋白质进行了物理相互作用.

结论:

在保持土豆的休眠状态中,StBIN2起着至关重要的作用.
该机制涉及StBIN2调解ABA信号传导和调节素合成.
了解StBIN2的功能,可以了解土豆的休眠状态以及改善作物的潜力.

关键词:

在 ABA 信号中,ABA 是一个信号.在这里,我们将会看到BR BR BR BR.在RNA-seqqq.这种植物名为Solanum tuberosum L.这就是 StBIN2 的原因.素合成素合成的休眠状态的休眠状态

更多相关视频

Potato Virus X-Based microRNA Silencing VbMS In Potato.

Potato Virus X-Based microRNA Silencing VbMS In Potato.

Published on: May 11, 2020

An Experimental Study on Colorado Potato Beetle Hibernation Under Natural Conditions

An Experimental Study on Colorado Potato Beetle Hibernation Under Natural Conditions

Published on: November 17, 2023

相关概念视频

Riboswitches

Riboswitches

Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...

Transcription Attenuation in Prokaryotes

Transcription Attenuation in Prokaryotes

Transcriptional attenuation occurs when RNA transcription is prematurely terminated due to the formation of a terminator mRNA hairpin structure. Bacteria use these hairpins to regulate the transcription process and control the synthesis of several amino acids including histidine, lysine, threonine, and phenylalanine. Transcription attenuation takes place in the non-coding regions of mRNA.
There are several different mechanisms used to attenuate transcription. In ribosome mediated...

Negative Regulator Molecules

Negative Regulator Molecules

Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.

Regulation of Expression at Multiple Steps

Regulation of Expression at Multiple Steps

The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...