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Temporal and spatial interactions modulate the soybean microbiome.
Itumeleng Moroenyane1, Julien Tremblay2, Étienne Yergeau1
1Institut national de la recherche scientifique, Centre Armand-Frappier Santé Biotechnologie, 531 boulevard des Prairies, Laval, Québec, H7V1B7, Canada.
FEMS Microbiology Ecology
|December 28, 2020
Summary
Microbiome succession in soybean plants is shaped by both space and time. These interactions maintain high biodiversity in bacteria and archaea, while fungi show overlapping niches within genera.
Area of Science:
- Agricultural Science
- Microbiology
- Ecology
Background:
- Managed agricultural ecosystems feature intricate crop-microbe relationships.
- Understanding plant microbiome dynamics is crucial for sustainable agriculture.
Purpose of the Study:
- To investigate microbiome successional patterns across soybean plant organs.
- To test for niche differentiation along temporal and spatial axes.
- To analyze the impact of spatial and temporal dynamics on microbial community structure.
Main Methods:
- Soybean plants were grown to maturity in an environmental chamber.
- Samples were collected from multiple developmental stages and plant compartments (leaf, stem, root, rhizosphere).
- Community structure was assessed using 16S rRNA and ITS amplicon sequencing.
Main Results:
- Spatial and temporal dynamics significantly modulated alpha and beta diversity.
- Time lag analysis revealed strong temporal dependence in microbial communities.
- Interactions influenced the relative abundance and localization of abundant genera.
- Bacterial/archaeal communities maintained high biodiversity, while fungal OTUs within genera exhibited overlapping niches.
Conclusions:
- Spatial and temporal factors are key drivers of plant microbiome assembly.
- Distinct patterns of biodiversity maintenance exist between bacterial/archaeal and fungal communities.
- Niche differentiation varies between microbial domains within agricultural ecosystems.
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