一个转录地图集确定了大麦中尖组织发展的关键调节器和网络
Liping Shen1, Yangyang Liu2, Lili Zhang3
1Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; China National Botanical Garden, Beijing 100093, China.
Cell reports
|November 16, 2023
概括
麦尖的发展涉及到尖的生育能力和谷物填充. 研究人员创建了一个基因表达图谱,以识别HvGELP96作为大麦尖端子生育能力和谷物数量的关键调节者.
科学领域:
- 植物生物学 植物生物学
- 基因组学就是基因组学.
- 农作物科学 农作物科学
背景情况:
- 在大麦 (Hordeum vulgare) 中的谷物产量取决于谷物数量和大小,这与尖的肥力和谷物填充有关.
- 在尖的早期发育过程中,Spikelet primordia的流产会导致30%-50%的潜在谷物数量丧失.
研究的目的:
- 为了识别控制大麦尖的发育和形态的转录特征.
- 揭示控制尖端细胞生育率和谷物数量的关键调节者.
主要方法:
- 使用六行大麦品种 (Morex) 开发一个时空转录组图谱.
- 分析了255个样本,涉及17个发育阶段和尖端5个位置.
主要成果:
- 确定控制尖端发展的基本监管网络.
- 发现HvGELP96,一种含有GDSL域的蛋白质,作为状细胞生育能力和谷粒数量的调节者.
- 建立一个全面的转录地图集,用于大麦尖的发展.
结论:
- 开发的转录图谱图谱是了解大麦尖的发育和退化的一个宝贵资源.
- HvGELP96在确定小子生育率和大麦的谷粒数量方面发挥着至关重要的作用.
相关概念视频
01:17Gene Regulation During Sporulation
20
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...
20
01:30General Transcription Factors
5.3K
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...
5.3K