宿主基因调节体居民的Pseudomonas增强了黄瓜的生长
Yuxuan Qin1, Xueying Zhu2, Yingying Zheng2
1State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China. qinyuxuan@caas.cn.
Microbiome
|February 4, 2026
概括
黄瓜植物利用宿主基因,CsXPR1,在它们的体中选择有益的细菌,如Pseudomonas fulva. 这种相互作用通过增加关键代谢物来增强植物生长,证明了微生物组装的基因到功能通路.
科学领域:
- 植物生物学 植物生物学
- 微生物组研究 微生物组研究
- 遗传学 是一个遗传学.
背景情况:
- 内生菌微生物对于植物生长和耐压力至关重要.
- 控制有益微生物群的宿主选择的遗传机制,特别是在木质菌中,尚不清楚.
- 黄瓜 (Cucumis sativus) 作为研究血管生物学和宿主微生物组合的宿主决定因素的模型生物.
研究的目的:
- 为了研究宿主的遗传因素,控制黄瓜中的西勒姆微生物组组成.
- 为了确定特定的基因和细菌物种,涉及到有益的植物微生物相互作用在树.
- 阐明从宿主遗传到通过细菌共生促进植物生长的功能途径.
主要方法:
- 109个黄瓜加入的种群级微生物组概况.
- 全基因组关联映射 (GWAS) 用于识别宿主遗传位置.
- 细菌接种实验和植物生长测量.
- 基因表达分析和基因树脂的代谢物分析.
主要成果:
- 鉴定了一种由蛋白质细菌主导的保存的菌体微生物群,其中有20个核心安普利康序列变异 (ASV).
- 一个宿主遗传位点,CsXPR1,与一种特定的Pseudomonas ASV_4.4的丰富性有关.
- 类似于ASV_4的Pseudomonas fulva菌株220以CsXPR1-依赖的方式促进了黄瓜的生长,增加了植物生物质和4-甲基胺水平.
结论:
- 主体基因CsXPR1调节了黄瓜体中有益的Pseudomonas fulva的殖民.
- 这种相互作用导致基因型依赖的植物生长促进.
- 揭示了一个完整的基因功能通路,将CsXPR1,Pseudomonas fulva和通过4-甲基氨酸丰富增强植物生长联系起来.
相关概念视频
Genetics of Speciation
21.5K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
21.5K
Meristems and Plant Growth
49.5K
Plants grow throughout their lives; this is called indeterminate growth, and it distinguishes plants from most animals. Although certain parts of plants stop growing (e.g., leaves and flowers), others grow continuously—like roots and stems.
49.5K
Primary and Secondary Growth in Roots and Shoots
60.5K
Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
60.5K
Xylem and Transpiration-driven Transport of Resources
26.8K
The xylem of vascular plants distributes water and dissolved minerals that are taken up by the roots to the rest of the plant. The cells that transport xylem sap are dead upon maturity, and the movement of xylem sap is a passive process.
26.8K
Epigenetic Regulation
33.8K
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
33.8K
GTPases and their Regulation
9.9K
Guanine nucleotide-binding proteins (G-proteins), also known as GTPases, are a superfamily of proteins that regulate many cellular processes, such as cell signaling, vesicular transport, and the regulation of cell shape and motility. Mutation or dysfunction of these proteins can lead to disease. There are around 40,000 known G-proteins that can broadly be classified into two groups ‒ small G-proteins consisting of a single domain and large multi-domain G-proteins.
Large G-proteins,...
Large G-proteins,...
9.9K


