Rhizosphere bacterial communities of dominant steppe plants shift in response to a gradient of simulated nitrogen deposition

Simple item page
dc.contributor.authorYang, Anen
dc.contributor.authorLiu, Nanaen
dc.contributor.authorTian, Qiuyingen
dc.contributor.authorBai, Wenmingen
dc.contributor.authorWilliams, Mark A.en
dc.contributor.authorWang, Qibingen
dc.contributor.authorLi, Linghaoen
dc.contributor.authorZhang, Wen-Haoen
dc.contributor.departmentSchool of Plant and Environmental Sciencesen
dc.date.accessioned2019-03-15T16:33:29Zen
dc.date.available2019-03-15T16:33:29Zen
dc.date.issued2015-08-12en
dc.description.abstractWe evaluated effects of 9-year simulated nitrogen (N) deposition on microbial composition and diversity in the rhizosphere of two dominant temperate grassland species: grass Stipa krylovii and forb Artemisia frigida. Microbiomes in S. krylovii and A. frigida rhizosphere differed, but changed consistently along the N gradient. These changes were correlated to N-induced shifts to plant community. Hence, as plant biomass changed, so did bacterial rhizosphere communities, a result consistent with the role that N fertilizer has been shown to play in altering plant-microbial mutualisms. A total of 23 bacterial phyla were detected in the two rhizospheric soils by pyrosequencing, with Proteobacteria, Acidobacteria, and Bacteroidetes dominating the sequences of all samples. Bacterioidetes and Proteobacteria tended to increase, while Acidobacteria declined with increase in N addition rates. TM7 increased >5-fold in the high N addition rates, especially in S. krylovii rhizosphere. Nitrogen addition also decreased diversity of OTUs (operational taxonomic units), Shannon and Chaol indices of rhizospheric microbes regardless of plant species. These results suggest that there were both similar but also specific changes in microbial communities of temperate steppes due to N deposition. These findings would contribute to our mechanistic understanding of impacts of N deposition on grassland ecosystem by linking changes in plant traits to their rhizospheric microbes-mediated processes.en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.3389/fmicb.2015.00789en
dc.identifier.issn1664-302Xen
dc.identifier.other789en
dc.identifier.pmid26322024en
dc.identifier.urihttp://hdl.handle.net/10919/88462en
dc.identifier.volume6en
dc.language.isoenen
dc.publisherFrontiersen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleRhizosphere bacterial communities of dominant steppe plants shift in response to a gradient of simulated nitrogen depositionen
dc.title.serialFrontiers in Microbiologyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
fmicb-06-00789.pdf
Size:
1.25 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Scholarly Works, School of Plant and Environmental Sciences