Heterogeneity of the rice microbial community of the Chinese centuries-old Honghe Hani rice terraces system

Alonso Pascal, Blondin Laurence, Gladieux Pierre, Mahé Frédéric, Sanguin Hervé, Ferdinand Romain, Filloux Denis, Desmarais Eric, Cerqueira Frédérique, Jin Baihui, Huang Huichuan, He Xiahong, Morel Jean-Benoit, Martin Darren Patrick, Roumagnac Philippe, Vernière Christian. 2020. Heterogeneity of the rice microbial community of the Chinese centuries-old Honghe Hani rice terraces system. Environmental Microbiology, 22 (8) : 3429-3445.

Quartile : Q1, Sujet : MICROBIOLOGY

Résumé : The Honghe Hani rice terraces system (HHRTS) is a traditional rice cultivation system where Hani people cultivate remarkably diverse rice varieties. Recent introductions of modern rice varieties to the HHRTS have significantly increased the severity of rice diseases within the terraces. Here, we determine the impacts of these recent introductions on the composition of the rice‐associated microbial communities. We confirm that the HHRTS contains a range of both traditional HHRTS landraces and introduced modern rice varieties and find differences between the microbial communities of these two groups. However, this introduction of modern rice varieties has not strongly impacted the overall diversity of the HHRTS rice microbial community. Furthermore, we find that the rice varieties (i.e. groups of closely related genotypes) have significantly structured the rice microbial community composition (accounting for 15%–22% of the variance) and that the core microbial community of HHRTS rice plants represents less than 3.3% of all the microbial taxa identified. Collectively, our study suggests a highly diverse HHRTS rice holobiont (host with its associated microbes) where the diversity of rice hosts mirrors the diversity of their microbial communities. Further studies will be needed to better determine how such changes might impact the sustainability of the HHRTS.

Mots-clés Agrovoc : Oryza sativa, flore microbienne, écologie microbienne, culture en terrasse, rizière

Mots-clés géographiques Agrovoc : Chine

Mots-clés libres : Microbiota, Rice, China

Classification Agris : F40 - Écologie végétale
F08 - Systèmes et modes de culture

Champ stratégique Cirad : CTS 1 (2019-) - Biodiversité

Auteurs et affiliations

• Alonso Pascal, CIRAD-BIOS-UMR BGPI (FRA)
• Blondin Laurence, CIRAD-BIOS-UMR BGPI (FRA)
• Gladieux Pierre, INRAE (FRA)
• Mahé Frédéric, CIRAD-BIOS-UMR BGPI (FRA) ORCID: 0000-0002-2808-0984
• Sanguin Hervé, CIRAD-BIOS-UMR BGPI (FRA)
• Ferdinand Romain, CIRAD-BIOS-UMR BGPI (FRA)
• Filloux Denis, CIRAD-BIOS-UMR BGPI (FRA)
• Desmarais Eric, ISEM (FRA)
• Cerqueira Frédérique, Université de Montpellier (FRA)
• Jin Baihui, CIRAD-BIOS-UMR BGPI (FRA)
• Huang Huichuan, Yunnan Agricultural University (CHN)
• He Xiahong, Yunnan Agricultural University (CHN)
• Morel Jean-Benoit, INRAE (FRA)
• Martin Darren Patrick, UCT (ZAF)
• Roumagnac Philippe, CIRAD-BIOS-UMR BGPI (FRA) ORCID: 0000-0001-5002-6039
• Vernière Christian, CIRAD-BIOS-UMR BGPI (FRA) ORCID: 0000-0002-2312-2073 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/596142/)

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