对 (Ananas comosus L.) 中LEA基因家族的全基因组分析揭示了其在冷应激反应和生殖发育中的潜在作用
Zhimin Hou1,2, Xinkai Cai1, Denghang Wu1
1Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Haixia Institute of Science and Technology and College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Biology
|December 30, 2025
概括
研究人员确定了37个子晚期胚胎发育丰富 (LEA) 基因,揭示了它们在耐寒压力和水果发育中的作用. 特定的AcLEA基因显示出增强弹性的承诺.
科学领域:
- 植物分子生物学 植物分子生物学
- 基因组学就是基因组学.
- 无生物应激反应应激反应
背景情况:
- 晚期胚芽生殖丰富 (LEA) 蛋白质对于植物适应非生物压力和发育过程至关重要.
- (Ananas comosus L.) 产量易受寒冷压力影响,需要对其耐压力机制进行研究.
- 中的LEA蛋白的基因组和功能方面仍然在很大程度上未被描述.
研究的目的:
- 在基因组中识别和表征晚期胚胎发育丰富 (LEA) 基因.
- 研究LEA (AcLEA) 基因在应对寒冷压力和生殖发育过程中的潜在作用.
- 确定候选AcLEA基因,以改善的耐寒性和发育特征.
主要方法:
- 生物信息分析以确定37个AcLEA基因并将其分为六个子家族.
- 遗传学,对线性和蛋白质特征分析 (水友性,热稳定性,乱).
- 促进者cis元素,转录因子和miRNA网络预测;在寒冷压力下以及在不同组织/发育阶段的基因表达概况.
主要成果:
- 确定了37个AcLEA基因,大多数AcLEA蛋白质表现出典型的水友性,稳定性和失调性特征.
- 遗传学和对线性分析表明,由细分重复驱动的特定物种扩张,一些基因对显示功能分歧.
- 表达特征分析显示,在寒冷压力下,几个AcLEA基因的显著上调,在耐寒和敏感品种之间观察到不同的反应,以及生殖器官和果实中明显的时空表达.
结论:
- 这项研究提供了中的AcLEA基因的全面基因资源,突出了它们对寒冷应激反应和生殖发育的参与.
- 特定的AcLEA基因 (例如,AcLEA32,AcLEA33) 显示出在寒耐受性中发挥关键作用的潜力,差异调节有助于培育特定的反应.
- 这些发现为未来的功能研究和分子育种努力奠定了基础,以提高的弹性和生产力.
相关概念视频
01:25Cell Signaling in Plants
6.1K
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...
6.1K
01:17Gene Regulation During Sporulation
401
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...
401
02:45Responses to Heat and Cold Stress
14.6K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
14.6K