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Communication dans un congrès

How build up soil bacterial co-occurrence networks from wide spatial scale sampling?

Abstract : Although land use drives soil bacterial diversity and community structure, little information about the bacterial interaction networks is available. Here, we investigated bacterial co-occurrence networks in soils under different types of land use (forests, grasslands, crops and vineyards) by sampling 1798 sites in the French Soil Quality Monitoring Network covering all of France. An increase in bacterial richness was observed from forests to vineyards, whereas network complexity respectively decreased from 16,430 links to 2,046. However, the ratio of positive to negative links within the bacterial networks ranged from 2.9 in forests to 5.5 in vineyards. Networks structure was centered on the most connected genera (called hub), which belonged to Bacteroidetes in forest and grassland soils, but to Actinobacteria in vineyard soils. Overall, our study revealed that soil perturbation due to intensive cropping reduces strongly the complexity of bacterial network although the richness is increased. Moreover, the hub genera within the bacterial community shifted from copiotrophic taxa in forest soils to more oligotrophic taxa in agricultural soils.
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Communication dans un congrès
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https://hal.inrae.fr/hal-02953290
Déposant : Noureddine El Mjiyad <>
Soumis le : mercredi 30 septembre 2020 - 08:49:09
Dernière modification le : vendredi 2 octobre 2020 - 11:16:39

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  • HAL Id : hal-02953290, version 1

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Battle Karimi, Samuel Dequiedt, Sébastien Terrat, Claudy Jolivet, Dominique Arrouays, et al.. How build up soil bacterial co-occurrence networks from wide spatial scale sampling?. JOBIM 2019 Journées Ouvertes Biologie, Informatique et Mathématiques, Jul 2019, Nantes, France. ⟨hal-02953290⟩

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