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Responses of soil nitrogen fixation to Spartina alterniflora invasion and nitrogen addition in a Chinese salt marsh
Biological nitrogen fixation (BNF) is the major natural process of nitrogen (N) input to ecosystems. To understand how plant invasion and N enrichment affect BNF, we compared soil N-fixation rates and N-fixing microbes (NFM) of an invasive Spartina alterniflora community and a native Phragmites aust...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4751540/ https://www.ncbi.nlm.nih.gov/pubmed/26869197 http://dx.doi.org/10.1038/srep20384 |
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author | Huang, Jingxin Xu, Xiao Wang, Min Nie, Ming Qiu, Shiyun Wang, Qing Quan, Zhexue Xiao, Ming Li, Bo |
author_facet | Huang, Jingxin Xu, Xiao Wang, Min Nie, Ming Qiu, Shiyun Wang, Qing Quan, Zhexue Xiao, Ming Li, Bo |
author_sort | Huang, Jingxin |
collection | PubMed |
description | Biological nitrogen fixation (BNF) is the major natural process of nitrogen (N) input to ecosystems. To understand how plant invasion and N enrichment affect BNF, we compared soil N-fixation rates and N-fixing microbes (NFM) of an invasive Spartina alterniflora community and a native Phragmites australis community in the Yangtze River estuary, with and without N addition. Our results indicated that plant invasion relative to N enrichment had a greater influence on BNF. At each N level, the S. alterniflora community had a higher soil N-fixation rate but a lower diversity of the nifH gene in comparison with the native community. The S. alterniflora community with N addition had the highest soil N-fixation rate and the nifH gene abundance across all treatments. Our results suggest that S. alterniflora invasion can increase soil N fixation in the high N-loading estuarine ecosystem, and thus may further mediate soil N availability. |
format | Online Article Text |
id | pubmed-4751540 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-47515402016-02-22 Responses of soil nitrogen fixation to Spartina alterniflora invasion and nitrogen addition in a Chinese salt marsh Huang, Jingxin Xu, Xiao Wang, Min Nie, Ming Qiu, Shiyun Wang, Qing Quan, Zhexue Xiao, Ming Li, Bo Sci Rep Article Biological nitrogen fixation (BNF) is the major natural process of nitrogen (N) input to ecosystems. To understand how plant invasion and N enrichment affect BNF, we compared soil N-fixation rates and N-fixing microbes (NFM) of an invasive Spartina alterniflora community and a native Phragmites australis community in the Yangtze River estuary, with and without N addition. Our results indicated that plant invasion relative to N enrichment had a greater influence on BNF. At each N level, the S. alterniflora community had a higher soil N-fixation rate but a lower diversity of the nifH gene in comparison with the native community. The S. alterniflora community with N addition had the highest soil N-fixation rate and the nifH gene abundance across all treatments. Our results suggest that S. alterniflora invasion can increase soil N fixation in the high N-loading estuarine ecosystem, and thus may further mediate soil N availability. Nature Publishing Group 2016-02-12 /pmc/articles/PMC4751540/ /pubmed/26869197 http://dx.doi.org/10.1038/srep20384 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Huang, Jingxin Xu, Xiao Wang, Min Nie, Ming Qiu, Shiyun Wang, Qing Quan, Zhexue Xiao, Ming Li, Bo Responses of soil nitrogen fixation to Spartina alterniflora invasion and nitrogen addition in a Chinese salt marsh |
title | Responses of soil nitrogen fixation to Spartina alterniflora invasion and nitrogen addition in a Chinese salt marsh |
title_full | Responses of soil nitrogen fixation to Spartina alterniflora invasion and nitrogen addition in a Chinese salt marsh |
title_fullStr | Responses of soil nitrogen fixation to Spartina alterniflora invasion and nitrogen addition in a Chinese salt marsh |
title_full_unstemmed | Responses of soil nitrogen fixation to Spartina alterniflora invasion and nitrogen addition in a Chinese salt marsh |
title_short | Responses of soil nitrogen fixation to Spartina alterniflora invasion and nitrogen addition in a Chinese salt marsh |
title_sort | responses of soil nitrogen fixation to spartina alterniflora invasion and nitrogen addition in a chinese salt marsh |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4751540/ https://www.ncbi.nlm.nih.gov/pubmed/26869197 http://dx.doi.org/10.1038/srep20384 |
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