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Root and arbuscular mycorrhizal mycelial interactions with soil microorganisms in lowland tropical forest

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dc.contributor.author Nottingham, Andrew T. en
dc.contributor.author Turner, Benjamin L. en
dc.contributor.author Winter, Klaus en
dc.contributor.author Chamberlain, Paul M. en
dc.contributor.author Stott, Andrew en
dc.contributor.author Tanner, Edmund V. J. en
dc.date.accessioned 2013-10-25T13:46:18Z
dc.date.available 2013-10-25T13:46:18Z
dc.date.issued 2013
dc.identifier.citation Nottingham, Andrew T., Turner, Benjamin L., Winter, Klaus, Chamberlain, Paul M., Stott, Andrew, and Tanner, Edmund V. J. 2013. "<a href="https://repository.si.edu/handle/10088/21578">Root and arbuscular mycorrhizal mycelial interactions with soil microorganisms in lowland tropical forest</a>." <em>FEMS microbiology ecology</em>. 85 (1):37&ndash;50. <a href="https://doi.org/10.1111/1574-6941.12096">https://doi.org/10.1111/1574-6941.12096</a> en
dc.identifier.issn 1574-6941
dc.identifier.uri http://hdl.handle.net/10088/21578
dc.description.abstract Tropical forests have high rates of soil carbon cycling, but little information is available on how roots, arbuscular mycorrhizal fungi (AMF), and free-living microorganisms interact and influence organic matter mineralization in these ecosystems. We used mesh ingrowth cores and isotopic tracers in phospholipid fatty acid biomarkers to investigate the effects of roots and AMF mycelia on (1) microbial community composition, microbial carbon utilization, and hydrolytic enzyme activities for large, potted tropical trees and (2) enzyme activities and litter mass loss in a lowland tropical forest. Under the tropical tree, plant-derived carbon was incorporated predominantly into bacterial groups in both rhizosphere and AMF-only soils. Gram-positive bacteria incorporated additional soil-derived carbon in rhizosphere soils, which also contained the highest microbial biomass. For hydrolytic enzymes, ?-glucosidase and N-acetyl ?-glucosaminidase activities were highest in rhizosphere soils, while phosphomonoesterase activity was highest in AMF-only soil. In the forest, leaf litter mass loss was increased by the presence of roots, but not by the presence of AMF mycelia only. Root-microbial interactions influenced organic matter cycling, with evidence for rhizosphere priming and accelerated leaf litter decomposition in the presence of roots. Although AMF mycelia alone did not stimulate organic matter mineralization, they were a conduit of carbon to other soil microorganisms. en
dc.relation.ispartof FEMS microbiology ecology en
dc.title Root and arbuscular mycorrhizal mycelial interactions with soil microorganisms in lowland tropical forest en
dc.type Journal Article en
dc.identifier.srbnumber 114950
dc.identifier.doi 10.1111/1574-6941.12096
rft.jtitle FEMS microbiology ecology
rft.volume 85
rft.issue 1
rft.spage 37
rft.epage 50
dc.description.SIUnit STRI en
dc.description.SIUnit Peer-reviewed en
dc.citation.spage 37
dc.citation.epage 50

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