解读中的ceRNA网络:洞察寒冷压力耐受机制
Lin Zhu1, Yujie Zhao1,2, Maowei Guo1,3
1Institute of Grassland Research, Chinese Academy of Agricultural Sciences, Hohhot 010010, China.
Biomolecules
|February 27, 2026
概括
寒冷压力限制了的生产. 这项研究确定了关键的基因和调控网络,包括信息RNA (mRNA) 和非编码RNA (ncRNA),涉及耐寒性,为改善作物弹性提供资源.
科学领域:
- 植物科学 植物科学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 寒冷压力是限制 (Medicago sativa) 生产的主要因素.
- 已知非编码RNAs (ncRNAs) 在植物非生物应激反应中发挥作用,但它们在的低温耐受性中的具体参与,特别是通过竞争的内源RNA (ceRNA) 网络,尚不清楚.
研究的目的:
- 为了研究对寒冷压力的反应背后的分子机制.
- 在寒冷条件下识别差异表达的信使RNAs (mRNAs),microRNAs (miRNAs),长非编码RNAs (lncRNAs) 和圆形RNAs (circRNAs).
- 构建一个ceRNA调节网络,参与的寒冷应激反应.
主要方法:
- 综合的全转录组RNA测序 (RNA-seq) 和全基因组关联研究 (GWAS).
- 利用降解组测序来验证ceRNA网络.
- 分析了差异表达的基因和RNA,并进行了功能丰富分析 (KEGG和GO).
主要成果:
- 鉴定了46,936个差异表达的mRNA,其中顶级的KEGG通路包括核糖体,氨基糖和核酸糖代谢,粉和糖糖代谢.
- 发现了223个DEmiRNA,1852个DElncRNA和13个DEcircRNA,与叶子发育,转录因子活性和对辅酶的反应等功能相关.
- 构建了一个涉及28个lncRNA,8个circRNA,11个miRNA和23个mRNA的ceRNA网络,其中MS.gene53818 (MsUAM1) 被确定为关键候选基因.
结论:
- 这项研究阐明了各种RNA在的寒冷应激反应中的作用.
- 建立了一个全面的ceRNA网络,与的寒冷应激耐受性有关.
- 鉴定到的基因和调节网络为增强的寒冷耐受性提供了宝贵的遗传资源.
相关概念视频
Responses to Heat and Cold Stress
15.3K
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.
15.3K
Adaptations that Reduce Water Loss
28.3K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
28.3K
Responses to Salt Stress
14.8K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
14.8K
Introduction to Plant Diversity
49.4K
From Water to Land
49.4K
Cell Signaling in Plants
6.8K
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...
6.8K
Short-distance Transport of Resources
17.8K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
17.8K


