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Article

Effects of the Denitrification Inhibitor “Procyanidins” on the Diversity, Interactions, and Potential Functions of Rhizosphere-Associated Microbiome

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VetAgro Sup, UMR Ecologie Microbienne, Université Lyon, Université Claude Bernard Lyon 1, CNRS, INRAE, F-69622 Villeurbanne, France
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Institut Universitaire de France (IUF), CEDEX 05, F-75231 Paris, France
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Laboratoire de Biométrie et Biologie Évolutive, Université Lyon, Université Lyon 1, CNRS, UMR5558, 43 bd du 11 Novembre 1918, F-69622 Villeurbanne, France
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Laboratory of Microbial Ecology of the Rhizosphere (LEMiRE), Aix Marseille University, CEA, CNRS, BIAM, F-13108 Saint-Paul-Lez-Durance, France
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Université Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622 Villeurbanne, France
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Microbiologie, Adaptation, Pathogénie, INSA-Lyon, Université Claude Bernard Lyon 1, CNRS, UMR5240, 10 rue Raphaël Dubois, F-69622 Villeurbanne, France
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Author to whom correspondence should be addressed.
Academic Editor: Pierfrancesco Nardi
Microorganisms 2021, 9(7), 1406; https://doi.org/10.3390/microorganisms9071406
Received: 5 June 2021 / Revised: 22 June 2021 / Accepted: 24 June 2021 / Published: 29 June 2021
(This article belongs to the Special Issue Plant-N-Cycling Microorganisms Interactions in the Rhizosphere)
Some plant secondary metabolites, such as procyanidins, have been demonstrated to cause biological denitrification inhibition (BDI) of denitrifiers in soils concomitantly with a gain in plant biomass. The present work evaluated whether procyanidins had an impact on the diversity of nontarget microbial communities that are probably involved in soil fertility and ecosystem services. Lettuce plants were grown in two contrasting soils, namely Manziat (a loamy sand soil) and Serail (a sandy clay loam soil) with and without procyanidin amendment. Microbial diversity was assessed using Illumina sequencing of prokaryotic 16S rRNA gene and fungal ITS regions. We used a functional inference to evaluate the putative microbial functions present in both soils and reconstructed the microbial interaction network. The results showed a segregation of soil microbiomes present in Serail and Manziat that were dependent on specific soil edaphic variables. For example, Deltaproteobacteria was related to total nitrogen content in Manziat, while Leotiomycetes and Firmicutes were linked to Ca2+ in Serail. Procyanidin amendment did not affect the diversity and putative activity of microbial communities. In contrast, microbial interactions differed according to procyanidin amendment, with the results showing an enrichment of Entotheonellaeota and Mucoromycota in Serail soil and of Dependentiae and Rozellomycetes in Manziat soil. View Full-Text
Keywords: denitrification inhibitor; procyanidins; rhizosphere microbiome; diversity; functions; network denitrification inhibitor; procyanidins; rhizosphere microbiome; diversity; functions; network
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MDPI and ACS Style

Hugoni, M.; Galland, W.; Lecomte, S.; Bruto, M.; Barakat, M.; Piola, F.; Achouak, W.; Haichar, F.e.Z. Effects of the Denitrification Inhibitor “Procyanidins” on the Diversity, Interactions, and Potential Functions of Rhizosphere-Associated Microbiome. Microorganisms 2021, 9, 1406. https://doi.org/10.3390/microorganisms9071406

AMA Style

Hugoni M, Galland W, Lecomte S, Bruto M, Barakat M, Piola F, Achouak W, Haichar FeZ. Effects of the Denitrification Inhibitor “Procyanidins” on the Diversity, Interactions, and Potential Functions of Rhizosphere-Associated Microbiome. Microorganisms. 2021; 9(7):1406. https://doi.org/10.3390/microorganisms9071406

Chicago/Turabian Style

Hugoni, Mylène, William Galland, Solène Lecomte, Maxime Bruto, Mohamed Barakat, Florence Piola, Wafa Achouak, and Feth e.Z. Haichar. 2021. "Effects of the Denitrification Inhibitor “Procyanidins” on the Diversity, Interactions, and Potential Functions of Rhizosphere-Associated Microbiome" Microorganisms 9, no. 7: 1406. https://doi.org/10.3390/microorganisms9071406

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