Unveiling the influence of salinity on bacterial microbiome assembly of halophytes and crops.

Autor: Abdelfadil MR; Thaer-Institute, Faculty of Life Sciences, Humboldt University of Berlin, 10115, Berlin, Germany. abdelfadil@igzev.de.; Department of Plant-Microbe Systems, Leibniz Institute of Vegetable and Ornamental Crops (IGZ), 14979, Großbeeren, Germany. abdelfadil@igzev.de.; Microbial Biogeochemistry, RA Landscape Functioning, Leibniz Center for Agricultural Landscape Research (ZALF), Eberswalder Str. 84, D-15374, Müncheberg, Germany. abdelfadil@igzev.de., Patz S; Computomics GmbH, Eisenbahnstraße 1, 72072, Tübingen, Baden-Württemberg, Germany., Kolb S; Thaer-Institute, Faculty of Life Sciences, Humboldt University of Berlin, 10115, Berlin, Germany.; Microbial Biogeochemistry, RA Landscape Functioning, Leibniz Center for Agricultural Landscape Research (ZALF), Eberswalder Str. 84, D-15374, Müncheberg, Germany., Ruppel S; Department of Plant-Microbe Systems, Leibniz Institute of Vegetable and Ornamental Crops (IGZ), 14979, Großbeeren, Germany.
Jazyk: angličtina
Zdroj: Environmental microbiome [Environ Microbiome] 2024 Jul 18; Vol. 19 (1), pp. 49. Date of Electronic Publication: 2024 Jul 18.
DOI: 10.1186/s40793-024-00592-3
Abstrakt: Background: Climate change and anthropogenic activities intensify salinity stress impacting significantly on plant productivity and biodiversity in agroecosystems. There are naturally salt-tolerant plants (halophytes) that can grow and withstand such harsh conditions. Halophytes have evolved along with their associated microbiota to adapt to hypersaline environments. Identifying shared microbial taxa between halophyte species has rarely been investigated. We performed a comprehensive meta-analysis using the published bacterial 16S rRNA gene sequence datasets to untangle the rhizosphere microbiota structure of two halophyte groups and non-halophytes. We aimed for the identification of marker taxa of plants being adapted to a high salinity using three independent approaches.
Results: Fifteen studies met the selection criteria for downstream analysis, consisting of 40 plants representing diverse halophyte and non-halophyte species. Microbiome structural analysis revealed distinct compositions for halophytes that face high salt concentrations in their rhizosphere compared to halophytes grown at low salt concentrations or from non-halophytes. For halophytes grown at high salt concentrations, we discovered three bacterial genera that were independently detected through the analysis of the core microbiome, key hub taxa by network analysis and random forest analysis. These genera were Thalassospira, Erythrobacter, and Marinobacter.
Conclusions: Our meta-analysis revealed that salinity level is a critical factor in affecting the rhizosphere microbiome assembly of plants. Detecting marker taxa across high-halophytes may help to select Bacteria that might improve the salt tolerance of non-halophytic plants.
(© 2024. The Author(s).)
Databáze: MEDLINE
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