Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field

Abstract Carbon (C) plays an important role in maintaining soil fertility and increasing soil microbial community, but there is still limited information about how source utilization characteristics respond to soil fertility changes under double-cropping rice (Oryza sativa L.) system in southern Chi...

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Autores principales:	Haiming Tang, Xiaoping Xiao, Chao Li, Lihong Shi, Kaikai Cheng, Weiyan Li, Li Wen, Yilan Xu, Ke Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8d70296dcf904d56aeaf1b4a38de8272
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spelling	oai:doaj.org-article:8d70296dcf904d56aeaf1b4a38de82722021-12-02T13:20:03ZMicrobial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field10.1038/s41598-021-84425-02045-2322https://doaj.org/article/8d70296dcf904d56aeaf1b4a38de82722021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84425-0https://doaj.org/toc/2045-2322Abstract Carbon (C) plays an important role in maintaining soil fertility and increasing soil microbial community, but there is still limited information about how source utilization characteristics respond to soil fertility changes under double-cropping rice (Oryza sativa L.) system in southern China paddy field. Therefore, the effects of different short-term (5-years) tillage management on characteristics of C utilization in rice rhizosphere and non-rhizosphere soils under double-cropping rice field in southern China were investigated by using 18O incorporation into DNA. Therefore, a field experiment were included four tillage treatments: conventional tillage with crop residue incorporation (CT), rotary tillage with crop residue incorporation (RT), no-tillage with crop residue retention (NT), rotary tillage with crop residue removed as control (RTO). The results showed that soil microbial biomass C content with CT, RT, NT treatments were increased by 29.71–47.27% and 3.77–21.30% in rhizosphere and non-rhizosphere soils, compared with RTO treatment, respectively. Compared with RTO treatment, soil microbial basal respiration and microbial growth rate with CT treatment were increased 30.56%, 30.94% and 11.91%, 12.34% in rhizosphere and non-rhizosphere soils, respectively. The soil microbial C utilization efficiency were promoted with NT treatment. Compared with RTO treatment, the metabolic capacity of soil microorganism to exogenous C source with CT, RT and NT treatments were increased. The largest type of exogenous C source was saccharides, followed by amino acid and polymers, and complex compounds was the smallest. The redundancy analysis results indicated that tillage treatments significantly changed the utilization characteristics of soil microorganism to exogenous C source. Compared with RTO treatment, the grain yield of early rice and late rice with CT treatment were increased by 409.5 kg ha−1 and 387.0 kg ha−1, respectively. Therefore, the CT and RT treatments could significantly increase soil microbial biomass C content, but the NT treatment promote microbial C utilization efficiency in the double-cropping paddy field of southern China.Haiming TangXiaoping XiaoChao LiLihong ShiKaikai ChengWeiyan LiLi WenYilan XuKe WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Haiming Tang Xiaoping Xiao Chao Li Lihong Shi Kaikai Cheng Weiyan Li Li Wen Yilan Xu Ke Wang Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field
description	Abstract Carbon (C) plays an important role in maintaining soil fertility and increasing soil microbial community, but there is still limited information about how source utilization characteristics respond to soil fertility changes under double-cropping rice (Oryza sativa L.) system in southern China paddy field. Therefore, the effects of different short-term (5-years) tillage management on characteristics of C utilization in rice rhizosphere and non-rhizosphere soils under double-cropping rice field in southern China were investigated by using 18O incorporation into DNA. Therefore, a field experiment were included four tillage treatments: conventional tillage with crop residue incorporation (CT), rotary tillage with crop residue incorporation (RT), no-tillage with crop residue retention (NT), rotary tillage with crop residue removed as control (RTO). The results showed that soil microbial biomass C content with CT, RT, NT treatments were increased by 29.71–47.27% and 3.77–21.30% in rhizosphere and non-rhizosphere soils, compared with RTO treatment, respectively. Compared with RTO treatment, soil microbial basal respiration and microbial growth rate with CT treatment were increased 30.56%, 30.94% and 11.91%, 12.34% in rhizosphere and non-rhizosphere soils, respectively. The soil microbial C utilization efficiency were promoted with NT treatment. Compared with RTO treatment, the metabolic capacity of soil microorganism to exogenous C source with CT, RT and NT treatments were increased. The largest type of exogenous C source was saccharides, followed by amino acid and polymers, and complex compounds was the smallest. The redundancy analysis results indicated that tillage treatments significantly changed the utilization characteristics of soil microorganism to exogenous C source. Compared with RTO treatment, the grain yield of early rice and late rice with CT treatment were increased by 409.5 kg ha−1 and 387.0 kg ha−1, respectively. Therefore, the CT and RT treatments could significantly increase soil microbial biomass C content, but the NT treatment promote microbial C utilization efficiency in the double-cropping paddy field of southern China.
format	article
author	Haiming Tang Xiaoping Xiao Chao Li Lihong Shi Kaikai Cheng Weiyan Li Li Wen Yilan Xu Ke Wang
author_facet	Haiming Tang Xiaoping Xiao Chao Li Lihong Shi Kaikai Cheng Weiyan Li Li Wen Yilan Xu Ke Wang
author_sort	Haiming Tang
title	Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field
title_short	Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field
title_full	Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field
title_fullStr	Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field
title_full_unstemmed	Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field
title_sort	microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8d70296dcf904d56aeaf1b4a38de8272
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Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field

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