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Functional differences in the microbial processing of recent assimilates under two contrasting perennial bioenergy plantations
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Elias, Dafydd M. O., Rowe, Rebecca L., Pereira, M. Glória, Stott, Andrew W., Barnes, Christopher J., Bending, G. D. and McNamara, Niall P. (2017) Functional differences in the microbial processing of recent assimilates under two contrasting perennial bioenergy plantations. Soil Biology and Biochemistry, 114 . pp. 248-262. doi:10.1016/j.soilbio.2017.07.026 ISSN 0038-0717.
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Official URL: http://dx.doi.org/10.1016/j.soilbio.2017.07.026
Abstract
Land use change driven alteration of microbial communities can have implications on belowground C cycling and storage, although our understanding of the interactions between plant C inputs and soil microbes is limited. Using phospholipid fatty acids (PLFA's) we profiled the microbial communities under two contrasting UK perennial bioenergy crops, Short Rotation Coppice (SRC) willow and Miscanthus Giganteus (miscanthus), and used 13C – pulse labelling to investigate how recent carbon (C) assimilates were transferred through plant tissues to soil microbes. Total PLFA's and fungal to bacterial (F:B) ratios were higher under SRC willow (Total PLFA = 47.70 ± 1.66 SE μg PLFA g−1 dry weight soil, F:B = 0.27 ± 0.01 SE) relative to miscanthus (Total PLFA = 30.89 ± 0.73 SE μg PLFA g−1 dry weight soil, F:B = 0.17 ± 0.00 SE). Functional differences in microbial communities were highlighted by contrasting processing of labelled C. SRC willow allocated 44% of total 13C detected into fungal PLFA relative to 9% under miscanthus and 380% more 13C was returned to the atmosphere in soil respiration from SRC willow soil compared to miscanthus. Our findings elucidate the roles that bacteria and fungi play in the turnover of recent plant derived C under these two perennial bioenergy crops, and provide important evidence on the impacts of land use change to bioenergy on microbial community composition.
Item Type: | Journal Article | |||||||||
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Subjects: | Q Science > QH Natural history > QH301 Biology | |||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | |||||||||
Library of Congress Subject Headings (LCSH): | Biomass energy, Fungi, Carbon cycle (Biogeochemistry), Bacteria | |||||||||
Journal or Publication Title: | Soil Biology and Biochemistry | |||||||||
Publisher: | Elsevier | |||||||||
ISSN: | 0038-0717 | |||||||||
Official Date: | 3 August 2017 | |||||||||
Dates: |
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Volume: | 114 | |||||||||
Page Range: | pp. 248-262 | |||||||||
DOI: | 10.1016/j.soilbio.2017.07.026 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||
Date of first compliant deposit: | 2 February 2018 | |||||||||
Date of first compliant Open Access: | 2 February 2018 | |||||||||
RIOXX Funder/Project Grant: |
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