Shifts between Nitrospira- and Nitrobacter-like nitrite oxidizers underlie the response of soil potential nitrite oxidation to changes in tillage practices.
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| Title: | Shifts between Nitrospira- and Nitrobacter-like nitrite oxidizers underlie the response of soil potential nitrite oxidation to changes in tillage practices. |
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| Authors: | Attard, E.1, Poly, F.1, Commeaux, C.1, Laurent, F.2, Terada, A.3, Smets, B. F.3, Recous, S.4, Roux, X. Le5 xavier.leroux@fondationbiodiversite.fr |
| Source: | Environmental Microbiology. Feb2010, Vol. 12 Issue 2, p315-326. 12p. 2 Diagrams, 1 Chart, 3 Graphs. |
| Subjects: | Carbon in soils, Nitrifying bacteria, Agriculture, Nitrites -- Environmental aspects, Cloning |
| Abstract: | Despite their role in soil functioning, the ecology of nitrite-oxidizing bacteria, NOB, and their response to disturbances such as those generated by agricultural practices are scarcely known. Over the course of 17 months, we surveyed the potential nitrite oxidation, PNO, the abundance of the Nitrobacter- and Nitrospira-like NOB (by quantitative PCR) and the community structure of the Nitrobacter-like NOB (by PCR-DGGE and cloning-sequencing targeting the nxrA gene) in soils for four treatments: after establishment of tillage on a previously no-tillage system, after cessation of tillage on a previously tillage system, and on control tillage and no-tillage systems. Key soil variables (moisture, organic carbon content and gross mineralization – i.e. ammonification – measured by the 15N dilution technique) were also surveyed. PNO was always higher for the no-tillage than tillage treatments. Establishment of tillage led to a strong and rapid decrease in PNO whereas cessation of tillage did not change PNO even after 17 months. PNO was strongly and positively correlated to the abundance of Nitrobacter-like NOB and was also strongly related to gross mineralization, a proxy of N-availability; in contrast, PNO was weakly and negatively correlated to the abundance of Nitrospira-like NOB. Selection of a dominant population was observed under no-tillage, and PNO was loosely correlated to the community structure of Nitrobacter-like NOB. Our results demonstrate that Nitrobacter-like NOB are the key functional players within the NOB community in soils with high N availability and high activity level, and that changes in PNO are due to shifts between Nitrospira-like and Nitrobacter-like NOB and to a weaker extent by shifts of populations within Nitrobacter-like NOB. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 47715888 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Shifts between Nitrospira- and Nitrobacter-like nitrite oxidizers underlie the response of soil potential nitrite oxidation to changes in tillage practices. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Attard%2C+E%2E%22">Attard, E.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Poly%2C+F%2E%22">Poly, F.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Commeaux%2C+C%2E%22">Commeaux, C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Laurent%2C+F%2E%22">Laurent, F.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Terada%2C+A%2E%22">Terada, A.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Smets%2C+B%2E+F%2E%22">Smets, B. F.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Recous%2C+S%2E%22">Recous, S.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Roux%2C+X%2E+Le%22">Roux, X. Le</searchLink><relatesTo>5</relatesTo><i> xavier.leroux@fondationbiodiversite.fr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Environmental+Microbiology%22">Environmental Microbiology</searchLink>. Feb2010, Vol. 12 Issue 2, p315-326. 12p. 2 Diagrams, 1 Chart, 3 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Carbon+in+soils%22">Carbon in soils</searchLink><br /><searchLink fieldCode="DE" term="%22Nitrifying+bacteria%22">Nitrifying bacteria</searchLink><br /><searchLink fieldCode="DE" term="%22Agriculture%22">Agriculture</searchLink><br /><searchLink fieldCode="DE" term="%22Nitrites+--+Environmental+aspects%22">Nitrites -- Environmental aspects</searchLink><br /><searchLink fieldCode="DE" term="%22Cloning%22">Cloning</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Despite their role in soil functioning, the ecology of nitrite-oxidizing bacteria, NOB, and their response to disturbances such as those generated by agricultural practices are scarcely known. Over the course of 17 months, we surveyed the potential nitrite oxidation, PNO, the abundance of the Nitrobacter- and Nitrospira-like NOB (by quantitative PCR) and the community structure of the Nitrobacter-like NOB (by PCR-DGGE and cloning-sequencing targeting the nxrA gene) in soils for four treatments: after establishment of tillage on a previously no-tillage system, after cessation of tillage on a previously tillage system, and on control tillage and no-tillage systems. Key soil variables (moisture, organic carbon content and gross mineralization – i.e. ammonification – measured by the 15N dilution technique) were also surveyed. PNO was always higher for the no-tillage than tillage treatments. Establishment of tillage led to a strong and rapid decrease in PNO whereas cessation of tillage did not change PNO even after 17 months. PNO was strongly and positively correlated to the abundance of Nitrobacter-like NOB and was also strongly related to gross mineralization, a proxy of N-availability; in contrast, PNO was weakly and negatively correlated to the abundance of Nitrospira-like NOB. Selection of a dominant population was observed under no-tillage, and PNO was loosely correlated to the community structure of Nitrobacter-like NOB. Our results demonstrate that Nitrobacter-like NOB are the key functional players within the NOB community in soils with high N availability and high activity level, and that changes in PNO are due to shifts between Nitrospira-like and Nitrobacter-like NOB and to a weaker extent by shifts of populations within Nitrobacter-like NOB. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Environmental Microbiology is the property of Wiley-Blackwell 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: BibEntity: Identifiers: – Type: doi Value: 10.1111/j.1462-2920.2009.02070.x Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 315 Subjects: – SubjectFull: Carbon in soils Type: general – SubjectFull: Nitrifying bacteria Type: general – SubjectFull: Agriculture Type: general – SubjectFull: Nitrites -- Environmental aspects Type: general – SubjectFull: Cloning Type: general Titles: – TitleFull: Shifts between Nitrospira- and Nitrobacter-like nitrite oxidizers underlie the response of soil potential nitrite oxidation to changes in tillage practices. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Attard, E. – PersonEntity: Name: NameFull: Poly, F. – PersonEntity: Name: NameFull: Commeaux, C. – PersonEntity: Name: NameFull: Laurent, F. – PersonEntity: Name: NameFull: Terada, A. – PersonEntity: Name: NameFull: Smets, B. F. – PersonEntity: Name: NameFull: Recous, S. – PersonEntity: Name: NameFull: Roux, X. Le IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2010 Type: published Y: 2010 Identifiers: – Type: issn-print Value: 14622912 Numbering: – Type: volume Value: 12 – Type: issue Value: 2 Titles: – TitleFull: Environmental Microbiology Type: main |
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