Temporal Dynamics of Soil Microbial Communities below the Seedbed under Two Contrasting Tillage Regimes
Agricultural productivity relies on a wide range of ecosystem services provided by the soil biota. Plowing is a fundamental component of conventional farming, but long-term detrimental effects such as soil erosion and loss of soil organic matter have been recognized. Moving towards more sustainable...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2017-06-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | http://journal.frontiersin.org/article/10.3389/fmicb.2017.01127/full |
| _version_ | 1818137197897842688 |
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| author | Florine Degrune Florine Degrune Nicolas Theodorakopoulos Gilles Colinet Marie-Pierre Hiel Marie-Pierre Hiel Bernard Bodson Bernard Taminiau Georges Daube Micheline Vandenbol Martin Hartmann |
| author_facet | Florine Degrune Florine Degrune Nicolas Theodorakopoulos Gilles Colinet Marie-Pierre Hiel Marie-Pierre Hiel Bernard Bodson Bernard Taminiau Georges Daube Micheline Vandenbol Martin Hartmann |
| author_sort | Florine Degrune |
| collection | DOAJ |
| description | Agricultural productivity relies on a wide range of ecosystem services provided by the soil biota. Plowing is a fundamental component of conventional farming, but long-term detrimental effects such as soil erosion and loss of soil organic matter have been recognized. Moving towards more sustainable management practices such as reduced tillage or crop residue retention can reduce these detrimental effects, but will also influence structure and function of the soil microbiota with direct consequences for the associated ecosystem services. Although there is increasing evidence that different tillage regimes alter the soil microbiome, we have a limited understanding of the temporal dynamics of these effects. Here, we used high-throughput sequencing of bacterial and fungal ribosomal markers to explore changes in soil microbial community structure under two contrasting tillage regimes (conventional and reduced tillage) either with or without crop residue retention. Soil samples were collected over the growing season of two crops (Vicia faba and Triticum aestivum) below the seedbed (15–20 cm). Tillage, crop and growing stage were significant determinants of microbial community structure, but the impact of tillage showed only moderate temporal dependency. Whereas the tillage effect on soil bacteria showed some temporal dependency and became less strong at later growing stages, the tillage effect on soil fungi was more consistent over time. Crop residue retention had only a minor influence on the community. Six years after the conversion from conventional to reduced tillage, soil moisture contents and nutrient levels were significantly lower under reduced than under conventional tillage. These changes in edaphic properties were related to specific shifts in microbial community structure. Notably, bacterial groups featuring copiotrophic lifestyles or potentially carrying the ability to degrade more recalcitrant compounds were favored under conventional tillage, whereas taxa featuring more oligotrophic lifestyles were more abundant under reduced tillage. Our study found that, under the specific edaphic and climatic context of central Belgium, different tillage regimes created different ecological niches that select for different microbial lifestyles with potential consequences for the ecosystem services provided to the plants and their environment. |
| first_indexed | 2024-12-11T09:52:29Z |
| format | Article |
| id | doaj.art-7b746d99e8984dd98248b85bc04e10ff |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-12-11T09:52:29Z |
| publishDate | 2017-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-7b746d99e8984dd98248b85bc04e10ff2022-12-22T01:12:21ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2017-06-01810.3389/fmicb.2017.01127270140Temporal Dynamics of Soil Microbial Communities below the Seedbed under Two Contrasting Tillage RegimesFlorine Degrune0Florine Degrune1Nicolas Theodorakopoulos2Gilles Colinet3Marie-Pierre Hiel4Marie-Pierre Hiel5Bernard Bodson6Bernard Taminiau7Georges Daube8Micheline Vandenbol9Martin Hartmann10Microbiology and Genomics, Department of AGROBIOCHEM, Gembloux Agro-Bio Tech, University of LiègeGembloux, BelgiumTERRA-AgricultureIsLife, Gembloux Agro-Bio Tech, University of LiègeGembloux, BelgiumMicrobiology and Genomics, Department of AGROBIOCHEM, Gembloux Agro-Bio Tech, University of LiègeGembloux, BelgiumExchanges Ecosystems – Atmosphere, Department of BIOSE, Gembloux Agro-Bio Tech, University of LiègeGembloux, BelgiumMicrobiology and Genomics, Department of AGROBIOCHEM, Gembloux Agro-Bio Tech, University of LiègeGembloux, BelgiumCrop Sciences, Department of AGROBIOCHEM, Gembloux Agro-Bio Tech, University of LiègeGembloux, BelgiumCrop Sciences, Department of AGROBIOCHEM, Gembloux Agro-Bio Tech, University of LiègeGembloux, BelgiumFood Microbiology, University of LiègeLiège, BelgiumFood Microbiology, University of LiègeLiège, BelgiumMicrobiology and Genomics, Department of AGROBIOCHEM, Gembloux Agro-Bio Tech, University of LiègeGembloux, BelgiumForest Soils and Biogeochemistry, Research Institute for Forest, Snow and Landscape Research WSLBirmensdorf, SwitzerlandAgricultural productivity relies on a wide range of ecosystem services provided by the soil biota. Plowing is a fundamental component of conventional farming, but long-term detrimental effects such as soil erosion and loss of soil organic matter have been recognized. Moving towards more sustainable management practices such as reduced tillage or crop residue retention can reduce these detrimental effects, but will also influence structure and function of the soil microbiota with direct consequences for the associated ecosystem services. Although there is increasing evidence that different tillage regimes alter the soil microbiome, we have a limited understanding of the temporal dynamics of these effects. Here, we used high-throughput sequencing of bacterial and fungal ribosomal markers to explore changes in soil microbial community structure under two contrasting tillage regimes (conventional and reduced tillage) either with or without crop residue retention. Soil samples were collected over the growing season of two crops (Vicia faba and Triticum aestivum) below the seedbed (15–20 cm). Tillage, crop and growing stage were significant determinants of microbial community structure, but the impact of tillage showed only moderate temporal dependency. Whereas the tillage effect on soil bacteria showed some temporal dependency and became less strong at later growing stages, the tillage effect on soil fungi was more consistent over time. Crop residue retention had only a minor influence on the community. Six years after the conversion from conventional to reduced tillage, soil moisture contents and nutrient levels were significantly lower under reduced than under conventional tillage. These changes in edaphic properties were related to specific shifts in microbial community structure. Notably, bacterial groups featuring copiotrophic lifestyles or potentially carrying the ability to degrade more recalcitrant compounds were favored under conventional tillage, whereas taxa featuring more oligotrophic lifestyles were more abundant under reduced tillage. Our study found that, under the specific edaphic and climatic context of central Belgium, different tillage regimes created different ecological niches that select for different microbial lifestyles with potential consequences for the ecosystem services provided to the plants and their environment.http://journal.frontiersin.org/article/10.3389/fmicb.2017.01127/fullconventional tillagereduced tillagecrop residue managementcropping seasonmicrobial diversitymetabarcoding |
| spellingShingle | Florine Degrune Florine Degrune Nicolas Theodorakopoulos Gilles Colinet Marie-Pierre Hiel Marie-Pierre Hiel Bernard Bodson Bernard Taminiau Georges Daube Micheline Vandenbol Martin Hartmann Temporal Dynamics of Soil Microbial Communities below the Seedbed under Two Contrasting Tillage Regimes Frontiers in Microbiology conventional tillage reduced tillage crop residue management cropping season microbial diversity metabarcoding |
| title | Temporal Dynamics of Soil Microbial Communities below the Seedbed under Two Contrasting Tillage Regimes |
| title_full | Temporal Dynamics of Soil Microbial Communities below the Seedbed under Two Contrasting Tillage Regimes |
| title_fullStr | Temporal Dynamics of Soil Microbial Communities below the Seedbed under Two Contrasting Tillage Regimes |
| title_full_unstemmed | Temporal Dynamics of Soil Microbial Communities below the Seedbed under Two Contrasting Tillage Regimes |
| title_short | Temporal Dynamics of Soil Microbial Communities below the Seedbed under Two Contrasting Tillage Regimes |
| title_sort | temporal dynamics of soil microbial communities below the seedbed under two contrasting tillage regimes |
| topic | conventional tillage reduced tillage crop residue management cropping season microbial diversity metabarcoding |
| url | http://journal.frontiersin.org/article/10.3389/fmicb.2017.01127/full |
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