Elevated CO2 and nitrogen addition have minimal influence on the rhizospheric effects of Bothriochloa ischaemum

Abstract The influence of elevated CO2 and nitrogen (N) addition on soil microbial communities and the rhizospheric effects of Bothriochloa ischaemum were investigated. A pot-cultivation experiment was conducted in climate-controlled chambers under two levels of CO2 (400 and 800 μmol mol−1) and thre...

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Main Authors:	Lie Xiao, Guobin Liu, Peng Li, Sha Xue
Format:	article
Language:	EN
Published:	Nature Portfolio 2017
Subjects:	Medicine R Science Q
Online Access:	https://doaj.org/article/be63886d7f56473d923d8d7d6dd50a1c
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spelling	oai:doaj.org-article:be63886d7f56473d923d8d7d6dd50a1c2021-12-02T11:52:44ZElevated CO2 and nitrogen addition have minimal influence on the rhizospheric effects of Bothriochloa ischaemum10.1038/s41598-017-06994-32045-2322https://doaj.org/article/be63886d7f56473d923d8d7d6dd50a1c2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06994-3https://doaj.org/toc/2045-2322Abstract The influence of elevated CO2 and nitrogen (N) addition on soil microbial communities and the rhizospheric effects of Bothriochloa ischaemum were investigated. A pot-cultivation experiment was conducted in climate-controlled chambers under two levels of CO2 (400 and 800 μmol mol−1) and three levels of N addition (0, 2.5, and 5 g N m−2 y−1). Soil samples (rhizospheric and bulk soil) were collected for the assessment of soil organic carbon (SOC), total N (TN), total phosphorus (TP), basal respiration (BR), and phospholipid fatty acids (PLFAs) 106 days after treatments were conducted. Elevated CO2 significantly increased total and fungal PLFAs in the rhizosphere when combined with N addition, and N addition significantly increased BR in the rhizosphere and total, bacterial, fungal, Gram-positive (G+), and Gram-negative (G−) PLFAs in both rhizospheric and bulk soil. BR and total, bacterial, G+, and G+/G− PLFAs were significantly higher in rhizospheric than bulk soil, but neither elevated CO2 nor N addition affected the positive rhizospheric effects on bacterial, G+, or G+/G− PLFAs. N addition had a greater effect on soil microbial communities than elevated CO2, and elevated CO2 and N addition had minor contributions to the changes in the magnitude of the rhizospheric effects in B. ischaemum.Lie XiaoGuobin LiuPeng LiSha XueNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lie Xiao Guobin Liu Peng Li Sha Xue Elevated CO2 and nitrogen addition have minimal influence on the rhizospheric effects of Bothriochloa ischaemum
description	Abstract The influence of elevated CO2 and nitrogen (N) addition on soil microbial communities and the rhizospheric effects of Bothriochloa ischaemum were investigated. A pot-cultivation experiment was conducted in climate-controlled chambers under two levels of CO2 (400 and 800 μmol mol−1) and three levels of N addition (0, 2.5, and 5 g N m−2 y−1). Soil samples (rhizospheric and bulk soil) were collected for the assessment of soil organic carbon (SOC), total N (TN), total phosphorus (TP), basal respiration (BR), and phospholipid fatty acids (PLFAs) 106 days after treatments were conducted. Elevated CO2 significantly increased total and fungal PLFAs in the rhizosphere when combined with N addition, and N addition significantly increased BR in the rhizosphere and total, bacterial, fungal, Gram-positive (G+), and Gram-negative (G−) PLFAs in both rhizospheric and bulk soil. BR and total, bacterial, G+, and G+/G− PLFAs were significantly higher in rhizospheric than bulk soil, but neither elevated CO2 nor N addition affected the positive rhizospheric effects on bacterial, G+, or G+/G− PLFAs. N addition had a greater effect on soil microbial communities than elevated CO2, and elevated CO2 and N addition had minor contributions to the changes in the magnitude of the rhizospheric effects in B. ischaemum.
format	article
author	Lie Xiao Guobin Liu Peng Li Sha Xue
author_facet	Lie Xiao Guobin Liu Peng Li Sha Xue
author_sort	Lie Xiao
title	Elevated CO2 and nitrogen addition have minimal influence on the rhizospheric effects of Bothriochloa ischaemum
title_short	Elevated CO2 and nitrogen addition have minimal influence on the rhizospheric effects of Bothriochloa ischaemum
title_full	Elevated CO2 and nitrogen addition have minimal influence on the rhizospheric effects of Bothriochloa ischaemum
title_fullStr	Elevated CO2 and nitrogen addition have minimal influence on the rhizospheric effects of Bothriochloa ischaemum
title_full_unstemmed	Elevated CO2 and nitrogen addition have minimal influence on the rhizospheric effects of Bothriochloa ischaemum
title_sort	elevated co2 and nitrogen addition have minimal influence on the rhizospheric effects of bothriochloa ischaemum
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/be63886d7f56473d923d8d7d6dd50a1c
work_keys_str_mv	AT liexiao elevatedco2andnitrogenadditionhaveminimalinfluenceontherhizosphericeffectsofbothriochloaischaemum AT guobinliu elevatedco2andnitrogenadditionhaveminimalinfluenceontherhizosphericeffectsofbothriochloaischaemum AT pengli elevatedco2andnitrogenadditionhaveminimalinfluenceontherhizosphericeffectsofbothriochloaischaemum AT shaxue elevatedco2andnitrogenadditionhaveminimalinfluenceontherhizosphericeffectsofbothriochloaischaemum
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Elevated CO2 and nitrogen addition have minimal influence on the rhizospheric effects of Bothriochloa ischaemum

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