Soil nutritional status and biogeography influence rhizosphere microbial communities associated with the invasive tree Acacia dealbata

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dc.contributor.authorKamutando, Casper N.en_ZA
dc.contributor.authorVikram, Surendraen_ZA
dc.contributor.authorKamgan-Nkuekam, Gilberten_ZA
dc.contributor.authorMakhalanyane, Thulani P.en_ZA
dc.contributor.authorGreve, Michelleen_ZA
dc.contributor.authorLe Roux, Johannes J.en_ZA
dc.contributor.authorRichardson, David M.en_ZA
dc.contributor.authorCowan, Donen_ZA
dc.contributor.authorValverde, Angelen_ZA
dc.date.accessioned2018-11-30T12:44:26Z
dc.date.available2018-11-30T12:44:26Z
dc.date.issued2017-07-26
dc.descriptionCITATION: Kamutando, C. N., et al. 2017. Soil nutritional status and biogeography influence rhizosphere microbial communities associated with the invasive tree Acacia dealbata. Scientific Reports, 7:6472, doi:10.1038/s41598-017-07018-w.en_ZA
dc.descriptionThe original publication is available at https://www.nature.comen_ZA
dc.description.abstractInvasiveness and the impacts of introduced plants are known to be mediated by plant-microbe interactions. Yet, the microbial communities associated with invasive plants are generally poorly understood. Here we report on the first comprehensive investigation of the bacterial and fungal communities inhabiting the rhizosphere and the surrounding bulk soil of a widespread invasive tree, Acacia dealbata. Amplicon sequencing data indicated that rhizospheric microbial communities differed significantly in structure and composition from those of the bulk soil. Two bacterial (Alphaproteobacteria and Gammaproteobacteria) and two fungal (Pezizomycetes and Agaricomycetes) classes were enriched in the rhizosphere compared with bulk soils. Changes in nutritional status, possibly induced by A. dealbata, primarily shaped rhizosphere soil communities. Despite a high degree of geographic variability in the diversity and composition of microbial communities, invasive A. dealbata populations shared a core of bacterial and fungal taxa, some of which are known to be involved in N and P cycling, while others are regarded as plant pathogens. Shotgun metagenomic analysis also showed that several functional genes related to plant growth promotion were overrepresented in the rhizospheres of A. dealbata. Overall, results suggest that rhizosphere microbes may contribute to the widespread success of this invader in novel environments.en_ZA
dc.description.urihttps://www.nature.com/articles/s41598-017-07018-w
dc.description.versionPublisher's versionen_ZA
dc.format.extent9 pages : illustrationsen_ZA
dc.identifier.citationKamutando, C. N., et al. 2017. Soil nutritional status and biogeography influence rhizosphere microbial communities associated with the invasive tree Acacia dealbata. Scientific Reports, 7:6472, doi:10.1038/s41598-017-07018-wen_ZA
dc.identifier.issn2045-2322 (online)
dc.identifier.otherdoi:10.1038/s41598-017-07018-w
dc.identifier.urihttp://hdl.handle.net/10019.1/104760
dc.language.isoen_ZAen_ZA
dc.publisherNature Researchen_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectInvasive treesen_ZA
dc.subjectRhizospheric microbial communitiesen_ZA
dc.subjectAcacia dealbata invasionen_ZA
dc.titleSoil nutritional status and biogeography influence rhizosphere microbial communities associated with the invasive tree Acacia dealbataen_ZA
dc.typeArticleen_ZA
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