Dynamics of bacterial metabolic profile and community structure during the mineralization of organic carbon in intensive swine farm wastewater

Land application of intensive swine farm wastewater has raised serious environmental concerns due to the accumulation and microbially mediated transformation of large amounts of swine wastewater organic C (SWOC). Therefore, the study of SWOC mineralization and dynamics of wastewater microorganisms i...

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Autores principales:	Ma,Xiaoyan, Liu,Ming, Li,Zhongpei
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2015
Materias:	Carbon mineralization community level physiological profiles denaturing gradient gel electrophoresi SUVA254 swine wastewater organic carbon
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000200012
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spelling	oai:scielo:S0718-583920150002000122018-10-01Dynamics of bacterial metabolic profile and community structure during the mineralization of organic carbon in intensive swine farm wastewaterMa,XiaoyanLiu,MingLi,Zhongpei Carbon mineralization community level physiological profiles denaturing gradient gel electrophoresi SUVA254 swine wastewater organic carbon Land application of intensive swine farm wastewater has raised serious environmental concerns due to the accumulation and microbially mediated transformation of large amounts of swine wastewater organic C (SWOC). Therefore, the study of SWOC mineralization and dynamics of wastewater microorganisms is essential to understand the environmental impacts of swine wastewater application. We measured the C mineralization of incubated swine wastewaters with high (wastewater H) and low (wastewater L) organic C concentrations. The dynamics of bacteria metabolic profile and community structure were also investigated. The results showed that SWOC mineralization was properly fitted by the two-simultaneous reactions model. The initial potential rate of labile C mineralization of wastewater H was 46% higher than that of wastewater L, whereas the initial potential rates of recalcitrant C mineralization of wastewaters H and L were both around 23 mg L-1 d-1. The bacterial functional and structural diversities significantly decreased for both the wastewaters during SWOC mineralization, and were all negatively correlated to specific UV absorbance (SUVA254; P < 0.01). The bacteria in the raw wastewaters exhibited functional similarity, and both metabolic profile and community structure changed with the mineralization of SWOC, mainly under the influence of SUVA254 (P < 0.001). These results suggested that SWOC mineralization was characterized by rapid mineralization of labile C and subsequent slow decomposition of recalcitrant C pool, and the quality of SWOC varied between the wastewaters with different amounts of organic C. The decreased bio-availability of dissolved organic matter affected the dynamics of wastewater bacteria during SWOC mineralization.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.75 n.2 20152015-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000200012en10.4067/S0718-58392015000200012
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Carbon mineralization community level physiological profiles denaturing gradient gel electrophoresi SUVA254 swine wastewater organic carbon
spellingShingle	Carbon mineralization community level physiological profiles denaturing gradient gel electrophoresi SUVA254 swine wastewater organic carbon Ma,Xiaoyan Liu,Ming Li,Zhongpei Dynamics of bacterial metabolic profile and community structure during the mineralization of organic carbon in intensive swine farm wastewater
description	Land application of intensive swine farm wastewater has raised serious environmental concerns due to the accumulation and microbially mediated transformation of large amounts of swine wastewater organic C (SWOC). Therefore, the study of SWOC mineralization and dynamics of wastewater microorganisms is essential to understand the environmental impacts of swine wastewater application. We measured the C mineralization of incubated swine wastewaters with high (wastewater H) and low (wastewater L) organic C concentrations. The dynamics of bacteria metabolic profile and community structure were also investigated. The results showed that SWOC mineralization was properly fitted by the two-simultaneous reactions model. The initial potential rate of labile C mineralization of wastewater H was 46% higher than that of wastewater L, whereas the initial potential rates of recalcitrant C mineralization of wastewaters H and L were both around 23 mg L-1 d-1. The bacterial functional and structural diversities significantly decreased for both the wastewaters during SWOC mineralization, and were all negatively correlated to specific UV absorbance (SUVA254; P < 0.01). The bacteria in the raw wastewaters exhibited functional similarity, and both metabolic profile and community structure changed with the mineralization of SWOC, mainly under the influence of SUVA254 (P < 0.001). These results suggested that SWOC mineralization was characterized by rapid mineralization of labile C and subsequent slow decomposition of recalcitrant C pool, and the quality of SWOC varied between the wastewaters with different amounts of organic C. The decreased bio-availability of dissolved organic matter affected the dynamics of wastewater bacteria during SWOC mineralization.
author	Ma,Xiaoyan Liu,Ming Li,Zhongpei
author_facet	Ma,Xiaoyan Liu,Ming Li,Zhongpei
author_sort	Ma,Xiaoyan
title	Dynamics of bacterial metabolic profile and community structure during the mineralization of organic carbon in intensive swine farm wastewater
title_short	Dynamics of bacterial metabolic profile and community structure during the mineralization of organic carbon in intensive swine farm wastewater
title_full	Dynamics of bacterial metabolic profile and community structure during the mineralization of organic carbon in intensive swine farm wastewater
title_fullStr	Dynamics of bacterial metabolic profile and community structure during the mineralization of organic carbon in intensive swine farm wastewater
title_full_unstemmed	Dynamics of bacterial metabolic profile and community structure during the mineralization of organic carbon in intensive swine farm wastewater
title_sort	dynamics of bacterial metabolic profile and community structure during the mineralization of organic carbon in intensive swine farm wastewater
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000200012
work_keys_str_mv	AT maxiaoyan dynamicsofbacterialmetabolicprofileandcommunitystructureduringthemineralizationoforganiccarboninintensiveswinefarmwastewater AT liuming dynamicsofbacterialmetabolicprofileandcommunitystructureduringthemineralizationoforganiccarboninintensiveswinefarmwastewater AT lizhongpei dynamicsofbacterialmetabolicprofileandcommunitystructureduringthemineralizationoforganiccarboninintensiveswinefarmwastewater
_version_	1714205347083714560

Dynamics of bacterial metabolic profile and community structure during the mineralization of organic carbon in intensive swine farm wastewater

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