Community Assembly Mechanisms Underlying Divergent Responses of Indica and Japonica Rice Rhizosphere Microbiota to Drought Stress
Rattachement africain : cn, ee. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Drought stress markedly reduces rice yield, with notable genotypic variation in drought tolerance. While the rhizosphere microbiome is regarded as the second genome of plants, how the indica and japonica rice rhizosphere microbial communities respond to deficit irrigation and their relationship with yield remain to be elucidated. Here, we conducted field experiments using 12 indica and 12 japonica rice varieties under full and deficit irrigation regimes. Yield-related traits, including filled grain number, seed setting rate, two-plant yield, and thousand grain weight, were measured, and the rhizosphere microbial communities were characterized by 16S rRNA gene sequencing. In line with previous studies, japonica varieties showed superior drought resistance in terms of yield performance. Both rice genotype and irrigation regime significantly influenced the composition and functional potential of the rhizosphere microbiome. Compared to indica rice, the japonica rice rhizosphere was enriched with more beneficial microorganisms. Enrichment of nitrogen‑metabolism‑related groups, such as Microvirga and Nitrososphaeraceae, may contribute to rhizosphere nitrogen cycling and support nitrogen availability for the rice. Similarly, higher abundance of Streptomyces in japonica varieties under drought conditions may be associated with improved drought tolerance. These microbial genera were closely associated with rice yield. Moreover, the japonica rhizosphere microbiome was less disturbed by water limitation, showing higher stability. Overall, the rhizosphere microbiome of japonica rice exhibited functional optimization under drought stress by promoting the enrichment of beneficial and nitrogen-cycling microbes, thereby enhancing drought resistance and yield stability. This study demonstrated a significant correlation between rhizosphere microbial communities and rice yield, providing fundamental insights that may contribute to future strategies for optimizing crop productivity through microbiome management in sustainable agriculture.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Community Assembly Mechanisms Underlying Divergent Responses of Indica and Japonica Rice Rhizosphere Microbiota to Drought Stress
- Date Crossref
- 18/11/2025
- Éditeur
- Springer Science and Business Media LLC
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
-
Nanjing Agricultural University pays non établi dans la noticeUniversité ou école supérieure
-
Shanghai Academy of Agricultural Sciences pays non établi dans la noticeStructure de recherche
-
Ministry of Agriculture and Rural Affairs pays non établi dans la noticeOrganisme public
-
Shanghai Agrobiological Gene Center pays non établi dans la noticeStructure de recherche
-
Chinese Academy of Sciences pays non établi dans la noticeOrganisme public
-
Institute of Soil Science pays non établi dans la noticeStructure de recherche
-
Xinjiang Institute of Ecology and Geography pays non établi dans la noticeStructure de recherche
-
Ministry of Agriculture pays non établi dans la noticeOrganisme public
-
College of Life Sciences Department of Microbiology pays non établi dans la noticeUniversité ou école supérieure
-
Eco-Environmental Protection Research Institute pays non établi dans la noticeStructure de recherche
-
State Key Laboratory of Soil and Sustainable Agriculture pays non établi dans la noticeStructure de recherche
-
College of Resources and Environmental Sciences Key Laboratory of Low-Carbon and Green Agriculture in Southeastern China pays non établi dans la noticeUniversité ou école supérieure
Nanjing Agricultural University, Shanghai Academy of Agricultural Sciences et Ministry of Agriculture and Rural Affairs, avec 9 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.