Contribution of periphytic biofilm of paddy soils to carbon dioxide fixation and methane emissions

Rice paddies are major contributors to anthropogenic greenhouse gas emissions via methane (CH) flux. The accurate quantification of CH emissions from rice paddies remains problematic, in part due to uncertainties and omissions in the contribution of microbial aggregates on the soil surface to carbon...

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Authors: Wang, Sichu, Sun, Pengfei, Zhang, Guangbin, Gray, Neil, Dolfing, Jan, Esquivel-Elizondo, Sofia, Peñuelas, Josep|||0000-0002-7215-0150, Wu, Yonghong
Format: article
Publication Date:2022
Country:España
Institution:Universitat Autònoma de Barcelona
Repository:Dipòsit Digital de Documents de la UAB
Language:English
OAI Identifier:oai:ddd.uab.cat:250554
Online Access:https://ddd.uab.cat/record/250554
https://dx.doi.org/urn:doi:10.1016/j.xinn.2021.100192
Access Level:Open access
Keyword:Periphytic biofilm
Rice paddy
Greenhouse gas emissions
Carbon fluxes
Redox potential
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spelling Contribution of periphytic biofilm of paddy soils to carbon dioxide fixation and methane emissionsWang, SichuSun, PengfeiZhang, GuangbinGray, NeilDolfing, JanEsquivel-Elizondo, SofiaPeñuelas, Josep|||0000-0002-7215-0150Wu, YonghongPeriphytic biofilmRice paddyGreenhouse gas emissionsCarbon fluxesRedox potentialRice paddies are major contributors to anthropogenic greenhouse gas emissions via methane (CH) flux. The accurate quantification of CH emissions from rice paddies remains problematic, in part due to uncertainties and omissions in the contribution of microbial aggregates on the soil surface to carbon fluxes. Herein, we comprehensively evaluated the contribution of one form of microbial aggregates, periphytic biofilm (PB), to carbon dioxide (CO) and CH emissions from paddies distributed across three climatic zones, and quantified the pathways that drive net CH production as well as CO fixation. We found that PB accounted for 7.1%-38.5% of CH emissions and 7.2%-12.7% of CO fixation in the rice paddies. During their growth phase, PB fixed CO and increased the redox potential, which promoted aerobic CH oxidation. During the decay phase, PB degradation reduced redox potential and increased soil organic carbon availability, which promoted methanogenic microbial community growth and metabolism and increased CH emissions. Overall, PB acted as a biotic converter of atmospheric CO to CH, and aggravated carbon emissions by up to 2,318 kg CO equiv ha -1 season -1. Our results provide proof-of-concept evidence for the discrimination of the contributions of surface microbial aggregates (i.e., PB) from soil microbes, and a profound foundation for the estimation and simulation of carbon fluxes in a potential novel approach to the mitigation of CH emissions by manipulating PB growth. 22022-01-0120222022-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/250554https://dx.doi.org/urn:doi:10.1016/j.xinn.2021.100192reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2505542026-06-06T12:50:31Z
dc.title.none.fl_str_mv Contribution of periphytic biofilm of paddy soils to carbon dioxide fixation and methane emissions
title Contribution of periphytic biofilm of paddy soils to carbon dioxide fixation and methane emissions
spellingShingle Contribution of periphytic biofilm of paddy soils to carbon dioxide fixation and methane emissions
Wang, Sichu
Periphytic biofilm
Rice paddy
Greenhouse gas emissions
Carbon fluxes
Redox potential
title_short Contribution of periphytic biofilm of paddy soils to carbon dioxide fixation and methane emissions
title_full Contribution of periphytic biofilm of paddy soils to carbon dioxide fixation and methane emissions
title_fullStr Contribution of periphytic biofilm of paddy soils to carbon dioxide fixation and methane emissions
title_full_unstemmed Contribution of periphytic biofilm of paddy soils to carbon dioxide fixation and methane emissions
title_sort Contribution of periphytic biofilm of paddy soils to carbon dioxide fixation and methane emissions
dc.creator.none.fl_str_mv Wang, Sichu
Sun, Pengfei
Zhang, Guangbin
Gray, Neil
Dolfing, Jan
Esquivel-Elizondo, Sofia
Peñuelas, Josep|||0000-0002-7215-0150
Wu, Yonghong
author Wang, Sichu
author_facet Wang, Sichu
Sun, Pengfei
Zhang, Guangbin
Gray, Neil
Dolfing, Jan
Esquivel-Elizondo, Sofia
Peñuelas, Josep|||0000-0002-7215-0150
Wu, Yonghong
author_role author
author2 Sun, Pengfei
Zhang, Guangbin
Gray, Neil
Dolfing, Jan
Esquivel-Elizondo, Sofia
Peñuelas, Josep|||0000-0002-7215-0150
Wu, Yonghong
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Periphytic biofilm
Rice paddy
Greenhouse gas emissions
Carbon fluxes
Redox potential
topic Periphytic biofilm
Rice paddy
Greenhouse gas emissions
Carbon fluxes
Redox potential
description Rice paddies are major contributors to anthropogenic greenhouse gas emissions via methane (CH) flux. The accurate quantification of CH emissions from rice paddies remains problematic, in part due to uncertainties and omissions in the contribution of microbial aggregates on the soil surface to carbon fluxes. Herein, we comprehensively evaluated the contribution of one form of microbial aggregates, periphytic biofilm (PB), to carbon dioxide (CO) and CH emissions from paddies distributed across three climatic zones, and quantified the pathways that drive net CH production as well as CO fixation. We found that PB accounted for 7.1%-38.5% of CH emissions and 7.2%-12.7% of CO fixation in the rice paddies. During their growth phase, PB fixed CO and increased the redox potential, which promoted aerobic CH oxidation. During the decay phase, PB degradation reduced redox potential and increased soil organic carbon availability, which promoted methanogenic microbial community growth and metabolism and increased CH emissions. Overall, PB acted as a biotic converter of atmospheric CO to CH, and aggravated carbon emissions by up to 2,318 kg CO equiv ha -1 season -1. Our results provide proof-of-concept evidence for the discrimination of the contributions of surface microbial aggregates (i.e., PB) from soil microbes, and a profound foundation for the estimation and simulation of carbon fluxes in a potential novel approach to the mitigation of CH emissions by manipulating PB growth.
publishDate 2022
dc.date.none.fl_str_mv 2
2022-01-01
2022
2022-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/250554
https://dx.doi.org/urn:doi:10.1016/j.xinn.2021.100192
url https://ddd.uab.cat/record/250554
https://dx.doi.org/urn:doi:10.1016/j.xinn.2021.100192
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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