2025-10-09 中国科学院(CAS)
<関連情報>
- https://english.cas.cn/newsroom/research_news/life/202510/t20251011_1089253.shtml
- https://www.nature.com/articles/s43016-025-01248-2
小麦根圏における干ばつ耐性細菌の世界的な調査により、微生物相の変化と植物の回復力を高める機能分類群が明らかになった Global exploration of drought-tolerant bacteria in the wheat rhizosphere reveals microbiota shifts and functional taxa enhancing plant resilience
Qiang Xiang,Kai Yang,Li Cui,An-Qi Sun,Cai-Yu Lu,Jun-Qi Gao,Yi-Long Hao,Bin Ma,Hang-Wei Hu,Brajesh K. Singh,Qing-Lin Chen & Yong-Guan Zhu
Nature Food Published:10 October 2025
DOI:https://doi.org/10.1038/s43016-025-01248-2
Abstract
Drought stress impacts plant–microbe interactions, reshaping microbial community composition and biogeochemical cycling, thereby reducing crop productivity and threatening food security. However, the specific microbial responses and roles of plant-derived metabolites remain underexplored. Here we reveal that drought stress shifts the composition of wheat-associated microbiota across the phyllosphere, rhizosphere and root endosphere by favouring Actinobacteria and Ascomycota while depleting Proteobacteria and Basidiomycota. Targeted single-cell sorting and sequencing identified 21 active drought-tolerant bacteria (DTB) enriched in genes related to plant fitness and nutrient cycling. These DTB showed significant positive correlations with drought-enriched plant phytochemicals such as jasmonic acid and pipecolic acid. Moreover, the inoculation of synthetic community including four identified drought-tolerant taxa significantly stimulates the wheat growth under drought stress. A global exploration confirmed the widespread distribution of DTB, underscoring their promising potential to enhance crop resilience. This study provides new insights into drought-induced microbiome shifts and highlights microbial candidates for improving crop resilience in a changing climate.
