2026-01-22 アリゾナ大学
<関連情報>
- https://news.arizona.edu/news/rewilding-corn-reveals-what-its-roots-forgot
- https://www.science.org/doi/10.1126/sciadv.aed3360
失われたもの、そして発見されたもの:農業の持続可能性を再構築するマイクロバイオーム関連表現型の再発見 Lost and found: Rediscovering microbiome-associated phenotypes that reshape agricultural sustainability
Alonso Favela, Angela D. Kent, Connor N. Sible, Sherry Flint-Garcia, […] , and Martin O. Bohn
Science Advances Published:1 Jan 2026
DOI:https://doi.org/10.1126/sciadv.aed3360
Abstract
Modern agriculture faces an urgent need to improve nutrient use efficiency while reducing environmental impacts. Here, we show that ancestral traits controlling rhizosphere microbiome functions can be reintroduced into elite maize through targeted teosinte introgressions. Using near-isogenic lines, we mapped microbiome-associated phenotypes (MAPs) derived from teosinte that suppress nitrification and denitrification—key microbial processes contributing to nitrogen loss. These introgressions altered root exudate chemistry, resulting in distinct microbial assemblies and enhanced nitrogen retention. We identified candidate loci and exudate metabolites responsible for suppressive activity and demonstrated their functional effects in vitro. These findings reveal a genetic and biochemical basis for rewilding microbiome-mediated ecosystem services in crops, offering a scalable path toward sustainable nutrient management in global agriculture.
