title: Land Use History Shifts In Situ Fungal and Bacterial Successions following Wheat Straw Input into the Soil.
abstract: Soil microbial communities undergo rapid shifts following modifications in environmental conditions. Although microbial diversity changes may alter soil functioning, the in situ temporal dynamics of microbial diversity is poorly documented. Here, we investigated the response of fungal and bacterial diversity to wheat straw input in a 12-months field experiment and explored whether this response depended on the soil management history (grassland vs. cropland). Seasonal climatic fluctuations had no effect on the diversity of soil communities. Contrastingly fungi and bacteria responded strongly to wheat regardless of the soil history. After straw incorporation, diversity decreased due to the temporary dominance of a subset of copiotrophic populations. While fungi responded as quickly as bacteria, the resilience of fungal diversity lasted much longer, indicating that the relative involvement of each community might change as decomposition progressed. Soil history did not affect the response patterns, but determined the identity of some of the populations stimulated. Most strikingly, the bacteria Burkholderia, Lysobacter and fungi Rhizopus, Fusarium were selectively stimulated. Given the ecological importance of these microbial groups as decomposers and/or plant pathogens, such regulation of the composition of microbial successions by soil history may have important consequences in terms of soil carbon turnover and crop health.
authors.affiliation: INRA, UMR 1347 Agroecology, Dijon, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Tardy
authors.affiliation: Centre de recherche Poitou-Charentes, INRA, Lusignan, France.
authors.forename: Abad
authors.initials: A
authors.lastname: Chabbi
authors.affiliation: Centre de recherche Poitou-Charentes, INRA, Lusignan, France.
authors.forename: Xavier
authors.initials: X
authors.lastname: Charrier
authors.affiliation: Centre de recherche Poitou-Charentes, INRA, Lusignan, France.
authors.forename: Christophe
authors.initials: C
authors.lastname: de Berranger
authors.affiliation: INRA, UMR 1347 Agroecology, Dijon, France.
authors.forename: Tiffanie
authors.initials: T
authors.lastname: Reignier
authors.affiliation: INRA, Plateforme GenoSol, UMR1347 Agroecology, Dijon, France.
authors.forename: Samuel
authors.initials: S
authors.lastname: Dequiedt
authors.affiliation: INRA, Plateforme GenoSol, UMR1347 Agroecology, Dijon, France.
authors.forename: Céline
authors.initials: C
authors.lastname: Faivre-Primot
authors.affiliation: INRA, Plateforme GenoSol, UMR1347 Agroecology, Dijon, France.
authors.forename: Sébastien
authors.initials: S
authors.lastname: Terrat
authors.affiliation: INRA, UMR 1347 Agroecology, Dijon, France; INRA, Plateforme GenoSol, UMR1347 Agroecology, Dijon, France.
authors.forename: Lionel
authors.initials: L
authors.lastname: Ranjard
authors.affiliation: INRA, UMR 1347 Agroecology, Dijon, France; INRA, Plateforme GenoSol, UMR1347 Agroecology, Dijon, France.
authors.forename: Pierre-Alain
authors.initials: PA
authors.lastname: Maron
mesh_terms: D000383:Agriculture; D001419:Bacteria / Q000145:classification / Q000254:growth & development / Q000302:isolation & purification*; D044822:Biodiversity; D002244:Carbon / Q000032:analysis / Q000378:metabolism; D002980:Climate; D018556:Crops, Agricultural / Q000382:microbiology; D005602:France; D005658:Fungi / Q000145:classification / Q000254:growth & development / Q000302:isolation & purification*; D065948:Grassland; D056265:Microbial Interactions; D064307:Microbiota; D009584:Nitrogen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D018547:Plant Stems; D006109:Poaceae / Q000382:microbiology; D021521:Ribotyping; D012621:Seasons; D012987:Soil / Q000737:chemistry; D012988:Soil Microbiology; D013045:Species Specificity; D014908:Triticum
chemical_list: D012987:Soil; D010758:Phosphorus; D002244:Carbon; D009584:Nitrogen