Importance of periphytic biofilms for carbon cycling in paddy fields: A review

Lei ZHOU; Yonghong WU; Junzhuo LIU; Pengfei SUN; Ying XU; Jan DOLFING; Robert G.M. SPENCER; Erik JEPPESEN

doi:10.1016/j.pedsph.2023.03.005

Importance of periphytic biofilms for carbon cycling in paddy fields: A review

Lei ZHOU, Yonghong WU^*, Junzhuo LIU, Pengfei SUN, Ying XU, Jan DOLFING, Robert G.M. SPENCER, Erik JEPPESEN

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

8 Citations (Scopus)

Abstract

Paddy fields play an important role in global carbon (C) cycling and are an important source of methane (CH₄) emissions. Insights into the processes influencing the dynamics of soil organic C (SOC) in paddy fields are essential for maintaining global soil C stocks and mitigating climate change. Periphytic biofilms composed of microalgae, bacteria, and other microorganisms are ubiquitous in paddy fields, where they directly mediate the transfer of elements at the soil-water interface. However, their contributions to C turnover and exchange have been largely neglected. Periphytic biofilms affect and participate in soil C dynamics by altering both abiotic (e.g., pH and redox potential) and biotic conditions (e.g., microbial community composition and metabolism). This review summarizes the contributions of periphytic biofilms to soil C cycling processes, including carbon dioxide fixation, SOC mineralization, and CH₄ emissions. Future research should be focused on: i) the mechanisms underlying periphytic biofilm-induced C fixation and turnover and ii) quantifying the contributions of periphytic biofilms to soil C uptake, stabilization, and sequestration in paddy fields.

Original language	English
Journal	Pedosphere
Volume	34
Issue	1
Pages (from-to)	36-43
Number of pages	8
ISSN	1002-0160
DOIs	https://doi.org/10.1016/j.pedsph.2023.03.005
Publication status	Published - Feb 2024

Keywords

carbon fixation
carbon mineralization
carbon sequestration
methane emission
microbial aggregates
soil organic carbon

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title = "Importance of periphytic biofilms for carbon cycling in paddy fields: A review",

abstract = "Paddy fields play an important role in global carbon (C) cycling and are an important source of methane (CH4) emissions. Insights into the processes influencing the dynamics of soil organic C (SOC) in paddy fields are essential for maintaining global soil C stocks and mitigating climate change. Periphytic biofilms composed of microalgae, bacteria, and other microorganisms are ubiquitous in paddy fields, where they directly mediate the transfer of elements at the soil-water interface. However, their contributions to C turnover and exchange have been largely neglected. Periphytic biofilms affect and participate in soil C dynamics by altering both abiotic (e.g., pH and redox potential) and biotic conditions (e.g., microbial community composition and metabolism). This review summarizes the contributions of periphytic biofilms to soil C cycling processes, including carbon dioxide fixation, SOC mineralization, and CH4 emissions. Future research should be focused on: i) the mechanisms underlying periphytic biofilm-induced C fixation and turnover and ii) quantifying the contributions of periphytic biofilms to soil C uptake, stabilization, and sequestration in paddy fields.",

keywords = "carbon fixation, carbon mineralization, carbon sequestration, methane emission, microbial aggregates, soil organic carbon",

author = "Lei ZHOU and Yonghong WU and Junzhuo LIU and Pengfei SUN and Ying XU and Jan DOLFING and SPENCER, {Robert G.M.} and Erik JEPPESEN",

note = "Publisher Copyright: {\textcopyright} 2024 Soil Science Society of China",

year = "2024",

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doi = "10.1016/j.pedsph.2023.03.005",

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T2 - A review

AU - ZHOU, Lei

AU - WU, Yonghong

AU - LIU, Junzhuo

AU - SUN, Pengfei

AU - XU, Ying

AU - DOLFING, Jan

AU - SPENCER, Robert G.M.

AU - JEPPESEN, Erik

PY - 2024/2

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N2 - Paddy fields play an important role in global carbon (C) cycling and are an important source of methane (CH4) emissions. Insights into the processes influencing the dynamics of soil organic C (SOC) in paddy fields are essential for maintaining global soil C stocks and mitigating climate change. Periphytic biofilms composed of microalgae, bacteria, and other microorganisms are ubiquitous in paddy fields, where they directly mediate the transfer of elements at the soil-water interface. However, their contributions to C turnover and exchange have been largely neglected. Periphytic biofilms affect and participate in soil C dynamics by altering both abiotic (e.g., pH and redox potential) and biotic conditions (e.g., microbial community composition and metabolism). This review summarizes the contributions of periphytic biofilms to soil C cycling processes, including carbon dioxide fixation, SOC mineralization, and CH4 emissions. Future research should be focused on: i) the mechanisms underlying periphytic biofilm-induced C fixation and turnover and ii) quantifying the contributions of periphytic biofilms to soil C uptake, stabilization, and sequestration in paddy fields.

AB - Paddy fields play an important role in global carbon (C) cycling and are an important source of methane (CH4) emissions. Insights into the processes influencing the dynamics of soil organic C (SOC) in paddy fields are essential for maintaining global soil C stocks and mitigating climate change. Periphytic biofilms composed of microalgae, bacteria, and other microorganisms are ubiquitous in paddy fields, where they directly mediate the transfer of elements at the soil-water interface. However, their contributions to C turnover and exchange have been largely neglected. Periphytic biofilms affect and participate in soil C dynamics by altering both abiotic (e.g., pH and redox potential) and biotic conditions (e.g., microbial community composition and metabolism). This review summarizes the contributions of periphytic biofilms to soil C cycling processes, including carbon dioxide fixation, SOC mineralization, and CH4 emissions. Future research should be focused on: i) the mechanisms underlying periphytic biofilm-induced C fixation and turnover and ii) quantifying the contributions of periphytic biofilms to soil C uptake, stabilization, and sequestration in paddy fields.

KW - carbon fixation

KW - carbon mineralization

KW - carbon sequestration

KW - methane emission

KW - microbial aggregates

KW - soil organic carbon

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DO - 10.1016/j.pedsph.2023.03.005

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Importance of periphytic biofilms for carbon cycling in paddy fields: A review

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