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Assessment of soil microbial diversity measurements as indicators of soil functioning in organic and conventional horticulture systems

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Title: Assessment of soil microbial diversity measurements as indicators of soil functioning in organic and conventional horticulture systems
Authors: Romaniuk, Romina1 romaniuk@agro.uba.ar, Giuffré, Lidia1, Costantini, Alejandro1,2, Nannipieri, Paolo3
Source: Ecological Indicators. Sep2011, Vol. 11 Issue 5, p1345-1353. 9p.
Subjects: Soil microbiology, Biodiversity, Bioindicators, Horticulture, Soil quality, Soil management, Fatty acids, Soil chemistry
Abstract: Abstract: Soil quality assessment is necessary to detect changes on soil properties among different management practices. Some microbial properties could be useful to predict changes in soil providing an integrated and relevant vision of soil functioning. The aim of this work was to evaluate and compare different methods to assess microbial diversity, such as methyl ester fatty acids (PLFA) and catabolic response profiles (CRP) to act as indicators of soil functioning. The study was carried out in an intensive horticulture production system. Undisturbed soil, 5years plots, and more than 20years plots under organic and conventional production were studied. Principal component analysis followed by multivariate discriminate analysis showed that d-glucose, d-glucosamine, α-ketobutyric, α-ketoglutaric and uric acids were the substrates with the highest sensitivity to separate situations. The same analysis was performed for PLFA, showing that C18:1w9, C13:0, C16:1w9, C14:0, i15:0 and cy19:0 methyl ester fatty acids were the most sensitive. Multivariate analysis of variance of selected substrates and fatty acids showed that CRP and PLFA techniques were both capable to characterize the studied systems. Saturated/monounsaturated (S/M), iso/anteiso (i/a) and cyclopropyl/precursors (cy/pre) microbial stress indicators were higher in plots under conventional management, presenting also these situations the lowest microbial biomass and fungi/bacteria ratio (F/B), especially in plots under conventional management for more than 20years. Microbial functional diversity, calculated as evenness (E) from CRP was capable to distinguish between all situations and management systems showing the potential of this measurement to act as an integrative indicator of soil functioning. [Copyright &y& Elsevier]
Copyright of Ecological Indicators is the property of Elsevier B.V. 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.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubTypeId: academicJournal
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  Label: Title
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  Data: Assessment of soil microbial diversity measurements as indicators of soil functioning in organic and conventional horticulture systems
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  Data: <searchLink fieldCode="AR" term="%22Romaniuk%2C+Romina%22">Romaniuk, Romina</searchLink><relatesTo>1</relatesTo><i> romaniuk@agro.uba.ar</i><br /><searchLink fieldCode="AR" term="%22Giuffré%2C+Lidia%22">Giuffré, Lidia</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Costantini%2C+Alejandro%22">Costantini, Alejandro</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Nannipieri%2C+Paolo%22">Nannipieri, Paolo</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Ecological+Indicators%22">Ecological Indicators</searchLink>. Sep2011, Vol. 11 Issue 5, p1345-1353. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Soil+microbiology%22">Soil microbiology</searchLink><br /><searchLink fieldCode="DE" term="%22Biodiversity%22">Biodiversity</searchLink><br /><searchLink fieldCode="DE" term="%22Bioindicators%22">Bioindicators</searchLink><br /><searchLink fieldCode="DE" term="%22Horticulture%22">Horticulture</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+quality%22">Soil quality</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+management%22">Soil management</searchLink><br /><searchLink fieldCode="DE" term="%22Fatty+acids%22">Fatty acids</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+chemistry%22">Soil chemistry</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: Soil quality assessment is necessary to detect changes on soil properties among different management practices. Some microbial properties could be useful to predict changes in soil providing an integrated and relevant vision of soil functioning. The aim of this work was to evaluate and compare different methods to assess microbial diversity, such as methyl ester fatty acids (PLFA) and catabolic response profiles (CRP) to act as indicators of soil functioning. The study was carried out in an intensive horticulture production system. Undisturbed soil, 5years plots, and more than 20years plots under organic and conventional production were studied. Principal component analysis followed by multivariate discriminate analysis showed that d-glucose, d-glucosamine, α-ketobutyric, α-ketoglutaric and uric acids were the substrates with the highest sensitivity to separate situations. The same analysis was performed for PLFA, showing that C18:1w9, C13:0, C16:1w9, C14:0, i15:0 and cy19:0 methyl ester fatty acids were the most sensitive. Multivariate analysis of variance of selected substrates and fatty acids showed that CRP and PLFA techniques were both capable to characterize the studied systems. Saturated/monounsaturated (S/M), iso/anteiso (i/a) and cyclopropyl/precursors (cy/pre) microbial stress indicators were higher in plots under conventional management, presenting also these situations the lowest microbial biomass and fungi/bacteria ratio (F/B), especially in plots under conventional management for more than 20years. Microbial functional diversity, calculated as evenness (E) from CRP was capable to distinguish between all situations and management systems showing the potential of this measurement to act as an integrative indicator of soil functioning. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Ecological Indicators is the property of Elsevier B.V. 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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      – Type: doi
        Value: 10.1016/j.ecolind.2011.02.008
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 9
        StartPage: 1345
    Subjects:
      – SubjectFull: Soil microbiology
        Type: general
      – SubjectFull: Biodiversity
        Type: general
      – SubjectFull: Bioindicators
        Type: general
      – SubjectFull: Horticulture
        Type: general
      – SubjectFull: Soil quality
        Type: general
      – SubjectFull: Soil management
        Type: general
      – SubjectFull: Fatty acids
        Type: general
      – SubjectFull: Soil chemistry
        Type: general
    Titles:
      – TitleFull: Assessment of soil microbial diversity measurements as indicators of soil functioning in organic and conventional horticulture systems
        Type: main
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            NameFull: Romaniuk, Romina
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            NameFull: Giuffré, Lidia
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            NameFull: Costantini, Alejandro
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            NameFull: Nannipieri, Paolo
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              M: 09
              Text: Sep2011
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              Y: 2011
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