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The rhizosphere microbiome of 51 potato cultivars with diverse plant growth characteristics.
FEMS Microbiol. Ecol. 100:fiae088 (2024)
Rhizosphere microbial communities play a substantial role in plant productivity. We studied the rhizosphere bacteria and fungi of 51 distinct potato cultivars grown under similar greenhouse conditions using a metabarcoding approach. As expected, individual cultivars were the most important determining factor of the rhizosphere microbial composition; however, differences were also obtained when grouping cultivars according to their growth characteristics. We demonstrated that plant growth characteristics were strongly related to deterministic and stochastic assembly processes of bacterial and fungal communities, respectively. The bacterial genera Arthrobacter and Massilia (known to produce IAA and siderophores) exhibited greater relative abundance in high- and medium performing cultivars. Bacterial co-occurrence networks were larger in the rhizosphere of these cultivars and were characterized by a distinctive combination of plant beneficial Proteobacteria and Actinobacteria along with a module of diazotrophs namely Azospira, Azoarcus, Azohydromonas. Conversely, the network within low performing cultivars revealed the lowest nodes, hub taxa, edges density, robustness and the highest average path length resulting in reduced microbial associations, which may potentially limit their effectiveness in promoting plant growth. Our findings established a clear pattern between plant productivity and the rhizosphere microbiome composition and structure for the investigated potato cultivars, offering insights for future management practices.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Potato Cultivars ; Co-occurrence Network ; Community Assembly Processes ; Microbiome ; Plant Growth ; Rhizosphere; Sp Nov.; Network Analysis; Bacterial Communities; Assembly Processes; Food Security; Nitrogen; Gene; Association; Patterns; Yield
ISSN (print) / ISBN
0168-6496
e-ISSN
1574-6941
Journal
FEMS Microbiology Ecology
Quellenangaben
Volume: 100,
Issue: 8,
Article Number: fiae088
Publisher
Wiley
Publishing Place
Oxford
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Research Unit Comparative Microbiome Analysis (COMI)
Research Unit Environmental Simulation (BIOP-EUS)
Research Unit Environmental Simulation (BIOP-EUS)
Grants
Research Unit Comparative Microbiome Analysis at Helmholtz Munich
German Research Foundation
German Research Foundation