转录因子REM16a通过激活与开花相关的基因,促进大豆的开花时间
Zhikun Wang1, Changhuan Du1, Qingqing Li1
1Key Laboratory of Soybean Biology of Ministry of Education China/Key Laboratory of Soybean Biology and Breeding (Genetics) of Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin 150030, China.
Plant physiology
|June 27, 2025
概括
大豆的开花时间由GmREM16a转录因子调节,通过影响关键基因来加速开花. GmCSN5与GmREM16a相互作用,控制其稳定性并影响大豆的适应性.
科学领域:
- 植物生物学 植物生物学
- 分子遗传学 分子遗传学
- 农业科学 农业科学
背景情况:
- 大豆的开花时间对光周期非常敏感,会影响产量并限制品种的适应性.
- 通过分子育种调节开花时间对于提高大豆生产力和范围至关重要.
- 了解花期的遗传调节是改善大豆种植的关键.
研究的目的:
- 描述GmREM16a转录因子在大豆开花时间调节中的作用.
- 为了研究GmREM16a和GmCSN5在控制开花中的相互作用.
- 探索GmREM16a-GmCSN5模块在大豆中的分子育种方面的潜力.
主要方法:
- 对光周期和昼夜节律反应的基因表达分析.
- 对大豆进行过度表达研究,以评估开花时间的变化.
- 酵母两杂交查以确定蛋白质相互作用.
- 在体内和体外的蛋白质降解试验.
主要成果:
- GmREM16a是一种类似AP2/B3的转录因子,可以加速大豆的开花.
- GmREM16a直接上调了与开花相关的基因GmSOC1,GmFT2a和GmFT5a的表达.
- GmCSN5与GmREM16a相互作用,并通过无素-蛋白酶体通路促进其降解.
- 在GmREM16a-GmCSN5模块调节GmREM16a蛋白质的稳定性.
结论:
- GmREM16a作为大豆的开花时间的积极调节者.
- GmCSN5调节了GmREM16a的稳定性,影响了开花时间.
- 该GmREM16a-GmCSN5路径提供了一个有价值的目标,通过分子育种来提高大豆的适应性.
相关概念视频
RNA Polymerase II Accessory Proteins
9.5K
Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
9.5K
Transcription Factors
77.1K
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
77.1K
Gene Regulation During Sporulation
85
Sporulation is a complex developmental process that allows certain Gram-positive bacteria, such as Bacillus subtilis and Clostridium species, to survive extreme environmental conditions. This process is tightly regulated by a series of signaling cascades and transcriptional controls, ensuring the formation of a highly resistant endospore.Sporulation is triggered by unfavorable conditions, such as nutrient depletion, and is governed by a phosphorelay system. One of the sensor kinases, such as...
85
Eukaryotic Transcription Activators
11.3K
Transcription activators are proteins that promote the transcription of genes from DNA to RNA. In most cases, these proteins contain two separate domains ‒ a domain that binds to DNA and a domain for activating transcription; however, in some cases, a single domain is responsible for both binding and activation of transcription, as seen in the glucocorticoid receptor and MyoD.
The binding domains are capable of recognizing and interacting with regulatory sequences on the DNA. These...
The binding domains are capable of recognizing and interacting with regulatory sequences on the DNA. These...
11.3K
Cell Signaling in Plants
5.8K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
5.8K
Co-activators and Co-repressors
7.6K
Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...
7.6K


