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Plant soil interactions alter carbon cycling in an upland grassland soil

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Plant soil interactions alter carbon cycling in an upland grassland soil. / Thomson, Bruce C.; Ostle, Nick J.; McNamara, Niall P. et al.
In: Frontiers in Microbiology, Vol. 4, 253, 10.09.2013.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Thomson, BC, Ostle, NJ, McNamara, NP, Oakley, S, Whiteley, AS, Bailey, MJ & Griffiths, RI 2013, 'Plant soil interactions alter carbon cycling in an upland grassland soil', Frontiers in Microbiology, vol. 4, 253. https://doi.org/10.3389/fmicb.2013.00253

APA

Thomson, B. C., Ostle, N. J., McNamara, N. P., Oakley, S., Whiteley, A. S., Bailey, M. J., & Griffiths, R. I. (2013). Plant soil interactions alter carbon cycling in an upland grassland soil. Frontiers in Microbiology, 4, Article 253. https://doi.org/10.3389/fmicb.2013.00253

Vancouver

Thomson BC, Ostle NJ, McNamara NP, Oakley S, Whiteley AS, Bailey MJ et al. Plant soil interactions alter carbon cycling in an upland grassland soil. Frontiers in Microbiology. 2013 Sept 10;4:253. doi: 10.3389/fmicb.2013.00253

Author

Thomson, Bruce C. ; Ostle, Nick J. ; McNamara, Niall P. et al. / Plant soil interactions alter carbon cycling in an upland grassland soil. In: Frontiers in Microbiology. 2013 ; Vol. 4.

Bibtex

@article{4d84e399affe43da87f68fc5f6e0b865,
title = "Plant soil interactions alter carbon cycling in an upland grassland soil",
abstract = "Soil carbon (C) storage is dependent upon the complex dynamics of fresh and native organic matter cycling, which are regulated by plant and soil-microbial activities. A fundamental challenge exists to link microbial biodiversity with plant-soil C cycling processes to elucidate the underlying mechanisms regulating soil carbon. To address this, we contrasted vegetated grassland soils with bare soils, which had been plant-free for 3 years, using stable isotope (13C) labeled substrate assays and molecular analyses of bacterial communities. Vegetated soils had higher C and N contents, biomass, and substrate-specific respiration rates. Conversely, following substrate addition unlabeled, native soil C cycling was accelerated in bare soil and retarded in vegetated soil; indicative of differential priming effects. Functional differences were reflected in bacterial biodiversity with Alphaproteobacteria and Acidobacteria dominating vegetated and bare soils, respectively. Significant isotopic enrichment of soil RNA was found after substrate addition and rates varied according to substrate type. However, assimilation was independent of plant presence which, in contrast to large differences in 13CO2 respiration rates, indicated greater substrate C use efficiency in bare, Acidobacteria-dominated soils. Stable isotope probing (SIP) revealed most community members had utilized substrates with little evidence for competitive outgrowth of sub-populations. Our findings support theories on how plant-mediated soil resource availability affects the turnover of different pools of soil carbon, and we further identify a potential role of soil microbial biodiversity. Specifically we conclude that emerging theories on the life histories of dominant soil taxa can be invoked to explain changes in soil carbon cycling linked to resource availability, and that there is a strong case for considering microbial biodiversity in future studies investigating the turnover of different pools of soil carbon.",
keywords = "Bacteria, Priming effects, RNA stable isotope probing, Soil organic carbon, Substrate carbon use efficiency, Substrate-specific respiration, T-RFLP, Upland acidic grassland",
author = "Thomson, {Bruce C.} and Ostle, {Nick J.} and McNamara, {Niall P.} and Simon Oakley and Whiteley, {Andrew S.} and Bailey, {Mark J.} and Griffiths, {Robert I.}",
year = "2013",
month = sep,
day = "10",
doi = "10.3389/fmicb.2013.00253",
language = "English",
volume = "4",
journal = "Frontiers in Microbiology",
issn = "1664-302X",
publisher = "Frontiers Research Foundation",

}

RIS

TY - JOUR

T1 - Plant soil interactions alter carbon cycling in an upland grassland soil

AU - Thomson, Bruce C.

AU - Ostle, Nick J.

AU - McNamara, Niall P.

AU - Oakley, Simon

AU - Whiteley, Andrew S.

AU - Bailey, Mark J.

AU - Griffiths, Robert I.

PY - 2013/9/10

Y1 - 2013/9/10

N2 - Soil carbon (C) storage is dependent upon the complex dynamics of fresh and native organic matter cycling, which are regulated by plant and soil-microbial activities. A fundamental challenge exists to link microbial biodiversity with plant-soil C cycling processes to elucidate the underlying mechanisms regulating soil carbon. To address this, we contrasted vegetated grassland soils with bare soils, which had been plant-free for 3 years, using stable isotope (13C) labeled substrate assays and molecular analyses of bacterial communities. Vegetated soils had higher C and N contents, biomass, and substrate-specific respiration rates. Conversely, following substrate addition unlabeled, native soil C cycling was accelerated in bare soil and retarded in vegetated soil; indicative of differential priming effects. Functional differences were reflected in bacterial biodiversity with Alphaproteobacteria and Acidobacteria dominating vegetated and bare soils, respectively. Significant isotopic enrichment of soil RNA was found after substrate addition and rates varied according to substrate type. However, assimilation was independent of plant presence which, in contrast to large differences in 13CO2 respiration rates, indicated greater substrate C use efficiency in bare, Acidobacteria-dominated soils. Stable isotope probing (SIP) revealed most community members had utilized substrates with little evidence for competitive outgrowth of sub-populations. Our findings support theories on how plant-mediated soil resource availability affects the turnover of different pools of soil carbon, and we further identify a potential role of soil microbial biodiversity. Specifically we conclude that emerging theories on the life histories of dominant soil taxa can be invoked to explain changes in soil carbon cycling linked to resource availability, and that there is a strong case for considering microbial biodiversity in future studies investigating the turnover of different pools of soil carbon.

AB - Soil carbon (C) storage is dependent upon the complex dynamics of fresh and native organic matter cycling, which are regulated by plant and soil-microbial activities. A fundamental challenge exists to link microbial biodiversity with plant-soil C cycling processes to elucidate the underlying mechanisms regulating soil carbon. To address this, we contrasted vegetated grassland soils with bare soils, which had been plant-free for 3 years, using stable isotope (13C) labeled substrate assays and molecular analyses of bacterial communities. Vegetated soils had higher C and N contents, biomass, and substrate-specific respiration rates. Conversely, following substrate addition unlabeled, native soil C cycling was accelerated in bare soil and retarded in vegetated soil; indicative of differential priming effects. Functional differences were reflected in bacterial biodiversity with Alphaproteobacteria and Acidobacteria dominating vegetated and bare soils, respectively. Significant isotopic enrichment of soil RNA was found after substrate addition and rates varied according to substrate type. However, assimilation was independent of plant presence which, in contrast to large differences in 13CO2 respiration rates, indicated greater substrate C use efficiency in bare, Acidobacteria-dominated soils. Stable isotope probing (SIP) revealed most community members had utilized substrates with little evidence for competitive outgrowth of sub-populations. Our findings support theories on how plant-mediated soil resource availability affects the turnover of different pools of soil carbon, and we further identify a potential role of soil microbial biodiversity. Specifically we conclude that emerging theories on the life histories of dominant soil taxa can be invoked to explain changes in soil carbon cycling linked to resource availability, and that there is a strong case for considering microbial biodiversity in future studies investigating the turnover of different pools of soil carbon.

KW - Bacteria

KW - Priming effects

KW - RNA stable isotope probing

KW - Soil organic carbon

KW - Substrate carbon use efficiency

KW - Substrate-specific respiration

KW - T-RFLP

KW - Upland acidic grassland

U2 - 10.3389/fmicb.2013.00253

DO - 10.3389/fmicb.2013.00253

M3 - Journal article

AN - SCOPUS:84885393772

VL - 4

JO - Frontiers in Microbiology

JF - Frontiers in Microbiology

SN - 1664-302X

M1 - 253

ER -