dc.contributor.author |
Kamutando, Casper N.
|
|
dc.contributor.author |
Vikram, Surendra
|
|
dc.contributor.author |
Kamgan-Nkuekam, Gilbert
|
|
dc.contributor.author |
Makhalanyane, Thulani Peter
|
|
dc.contributor.author |
Greve, Michelle
|
|
dc.contributor.author |
Le Roux, Johannes J.
|
|
dc.contributor.author |
Richardson, David M.
|
|
dc.contributor.author |
Cowan, Don A.
|
|
dc.contributor.author |
Valverde, Angel
|
|
dc.date.accessioned |
2017-08-29T08:47:08Z |
|
dc.date.available |
2017-08-29T08:47:08Z |
|
dc.date.issued |
2017-07-26 |
|
dc.description.abstract |
Invasiveness 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.department |
Genetics |
en_ZA |
dc.description.department |
Plant Production and Soil Science |
en_ZA |
dc.description.librarian |
am2017 |
en_ZA |
dc.description.sponsorship |
Funding for this research was provided by the National Research Foundation, South Africa (Grant No.
CPRR14071676470 to AV). SV is the recipient of a postdoctoral research fellowship from the Claude Leon
Foundation, South Africa. DMR and JJLR received support from the DST-NRF Centre of Excellence for Invasion
Biology. DMR and MG acknowledge funding from the National Research Foundation of South Africa (grants
85417 and 98889, respectively). |
en_ZA |
dc.description.uri |
http://www.nature.com/srep |
en_ZA |
dc.identifier.citation |
Kamutando, C.N., Vikram, S., Kamgan-Nkuekam, G., Makhalanyane, T.P., Greve, M., Roux, J.J.L., Richardson, D.M., Cowan, D. & Valverde, A. 2017, 'Soil nutritional status and biogeography influence rhizosphere microbial communities associated with the invasive tree Acacia dealbata', Scientific Reports, vol. 7, art. no. 6472, pp. 1-9. |
en_ZA |
dc.identifier.issn |
2045-2322 (online) |
|
dc.identifier.other |
10.1038/s41598-017-07018-w |
|
dc.identifier.uri |
http://hdl.handle.net/2263/62129 |
|
dc.language.iso |
en |
en_ZA |
dc.publisher |
Nature Publishing Group |
en_ZA |
dc.rights |
© 2017 [kamutando et al]. This is an open-access article distributed underthe terms of the Creative Commons Attribution License 4.0. |
en_ZA |
dc.subject |
Rhizosphere |
en_ZA |
dc.subject |
Bulk soil |
en_ZA |
dc.subject |
Acacia dealbata |
en_ZA |
dc.subject |
Soil |
en_ZA |
dc.subject |
Plant growth |
en_ZA |
dc.subject |
Plant disease |
en_ZA |
dc.subject |
Pezizomycetes |
en_ZA |
dc.subject |
Nutritional status |
en_ZA |
dc.subject |
Microbial communities |
en_ZA |
dc.subject |
Metagenomics |
en_ZA |
dc.subject |
Gammaproteobacteria |
en_ZA |
dc.subject |
Fungal community |
en_ZA |
dc.subject |
Biogeography |
en_ZA |
dc.subject |
Amplicon |
en_ZA |
dc.subject |
Alphaproteobacteria |
en_ZA |
dc.title |
Soil nutritional status and biogeography influence rhizosphere microbial communities associated with the invasive tree Acacia dealbata |
en_ZA |
dc.type |
Article |
en_ZA |