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Distribution of methane production and methanogenic archaeal community structure across soil particle size fractions along a rice chronosequence.

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Title: Distribution of methane production and methanogenic archaeal community structure across soil particle size fractions along a rice chronosequence.
Authors: Liu, Y.1, Dong, Y.2, Wang, P.1, Hussain, Q.3, Ge, T.4, Wang, J.5
Source: Journal of Soil & Water Conservation. May2019, Vol. 74 Issue 3, p235-246. 12p.
Subject Terms: *Soil chronosequences, *Soil particles, *Soil formation, Denaturing gradient gel electrophoresis, Polymerase chain reaction, Rice
Abstract: Methanogens, a phylogenetic group of archaea, are a key microbial community that mediate carbon (C) cycling and methane (CH4) production in submerged soils. In this study, we analyzed the potential of CH4 production and the archaeal community structure of different soil particle fractions in a chronosequence of rice (Oryza sativa L.) soil subjected to prolonged rice cultivation. The chronosequence of five age groups of a paddy soil formation was determined in a coastal area from East China, subjected to 50 to 700 years of rice cultivation. Undisturbed bulk soils were fractionated by low-energy ultra-sonication dispersion and centrifugation into four classes of particle size fractions (PSFs; coarse sand, fine sand, silt, and clay). The abundance and diversity of archaeal communities from each of the four fractions were analyzed by quantitative polymerase chain reaction and denaturing gradient gel electrophoresis, respectively. Among the size fractions, a high abundance of archaea and methanogens was found in both coarse sand- and clay-sized fractions. During prolonged rice cultivation, CH4 production potential (MPP) and methanogenic gene abundance increased in the soil cultivated for 100 years, and thereafter changed more or less in the soils cultivated for longer periods. Moreover, marked changes in gene abundance and community diversity were observed in coarse sand- and clay-sized fractions, but not in fine sand- and silt-sized fractions. Sequencing analysis of 61 selected archaeal 16S rRNA genes revealed that Methanocellales was an abundant group of methanogens in all sized fractions of soils across the chronosequence, whereas Methanosarcinaceae and Methanosaetaceae were less widespread in the clay fractions across the soils. This study indicated that methanogens and their activities can be heterogeneously distributed among soil PSFs, and their distribution and activities change in response to years of paddy cultivation that affect PSFs formation. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Soil & Water Conservation is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
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  Data: Distribution of methane production and methanogenic archaeal community structure across soil particle size fractions along a rice chronosequence.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Y%2E%22">Liu, Y.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Dong%2C+Y%2E%22">Dong, Y.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Wang%2C+P%2E%22">Wang, P.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Hussain%2C+Q%2E%22">Hussain, Q.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Ge%2C+T%2E%22">Ge, T.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Wang%2C+J%2E%22">Wang, J.</searchLink><relatesTo>5</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Soil+%26+Water+Conservation%22">Journal of Soil & Water Conservation</searchLink>. May2019, Vol. 74 Issue 3, p235-246. 12p.
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  Data: *<searchLink fieldCode="DE" term="%22Soil+chronosequences%22">Soil chronosequences</searchLink><br />*<searchLink fieldCode="DE" term="%22Soil+particles%22">Soil particles</searchLink><br />*<searchLink fieldCode="DE" term="%22Soil+formation%22">Soil formation</searchLink><br /><searchLink fieldCode="DE" term="%22Denaturing+gradient+gel+electrophoresis%22">Denaturing gradient gel electrophoresis</searchLink><br /><searchLink fieldCode="DE" term="%22Polymerase+chain+reaction%22">Polymerase chain reaction</searchLink><br /><searchLink fieldCode="DE" term="%22Rice%22">Rice</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Methanogens, a phylogenetic group of archaea, are a key microbial community that mediate carbon (C) cycling and methane (CH4) production in submerged soils. In this study, we analyzed the potential of CH4 production and the archaeal community structure of different soil particle fractions in a chronosequence of rice (Oryza sativa L.) soil subjected to prolonged rice cultivation. The chronosequence of five age groups of a paddy soil formation was determined in a coastal area from East China, subjected to 50 to 700 years of rice cultivation. Undisturbed bulk soils were fractionated by low-energy ultra-sonication dispersion and centrifugation into four classes of particle size fractions (PSFs; coarse sand, fine sand, silt, and clay). The abundance and diversity of archaeal communities from each of the four fractions were analyzed by quantitative polymerase chain reaction and denaturing gradient gel electrophoresis, respectively. Among the size fractions, a high abundance of archaea and methanogens was found in both coarse sand- and clay-sized fractions. During prolonged rice cultivation, CH4 production potential (MPP) and methanogenic gene abundance increased in the soil cultivated for 100 years, and thereafter changed more or less in the soils cultivated for longer periods. Moreover, marked changes in gene abundance and community diversity were observed in coarse sand- and clay-sized fractions, but not in fine sand- and silt-sized fractions. Sequencing analysis of 61 selected archaeal 16S rRNA genes revealed that Methanocellales was an abundant group of methanogens in all sized fractions of soils across the chronosequence, whereas Methanosarcinaceae and Methanosaetaceae were less widespread in the clay fractions across the soils. This study indicated that methanogens and their activities can be heterogeneously distributed among soil PSFs, and their distribution and activities change in response to years of paddy cultivation that affect PSFs formation. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Soil & Water Conservation is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.2489/jswc.74.3.235
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 12
        StartPage: 235
    Subjects:
      – SubjectFull: Soil chronosequences
        Type: general
      – SubjectFull: Soil particles
        Type: general
      – SubjectFull: Soil formation
        Type: general
      – SubjectFull: Denaturing gradient gel electrophoresis
        Type: general
      – SubjectFull: Polymerase chain reaction
        Type: general
      – SubjectFull: Rice
        Type: general
    Titles:
      – TitleFull: Distribution of methane production and methanogenic archaeal community structure across soil particle size fractions along a rice chronosequence.
        Type: main
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            NameFull: Liu, Y.
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            NameFull: Dong, Y.
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            NameFull: Wang, P.
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            NameFull: Hussain, Q.
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            NameFull: Ge, T.
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            – D: 01
              M: 05
              Text: May2019
              Type: published
              Y: 2019
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              Value: 74
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            – TitleFull: Journal of Soil & Water Conservation
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