Different bacterial communities associated with the roots and bulk sediment of the seagrass Zostera marina.
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| Title: | Different bacterial communities associated with the roots and bulk sediment of the seagrass Zostera marina. |
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| Authors: | Jensen, Sheila Ingemann1 sijensen@bi.ku.dk, Kühl, Michael1, Priemé, Anders2 |
| Source: | FEMS Microbiology Ecology. Oct2007, Vol. 62 Issue 1, p108-117. 10p. 1 Diagram, 1 Chart, 3 Graphs. |
| Subjects: | Zostera marina, Fibrinogen polymorphisms, Dissolved oxygen in water, Plant roots, Sediment microbiology, Bacteria, Polymerase chain reaction, Actinobacteria, Plants |
| Abstract: | The bacterial community of Zostera marina-inhabited bulk sediment vs. root-associated bacteria was investigated by terminal restriction fragment length polymorphism and sequencing, and the spatial extension of the oxygen loss from roots was determined by oxygen microsensors. Extensive oxygen loss was found in the tip region of the youngest roots, and most of the rhizoplane of Z. marina roots was thus anoxic. A significant difference between the bacterial communities associated with the roots and bulk sediment was found. No significant differences were found between differently aged root-bundles. Terminal restriction fragments (TRFs) assigned to sulfate-reducing Deltaproteobacteria showed a relative mean distribution of 12% and 23% of the PCR-amplified bacterial community in the bulk-sediment at the two sites, but only contributed <2% to the root-associated communities. TRFs assigned to Epsilonproteobacteria showed a relative mean distribution of between 5% and 11% in the root-associated communities of the youngest root bundle, in contrast to the bulk-sediment where this TRF only contributed <1.3%. TRFs assigned to Actinobacteria and Gammaproteobacteria also seemed important first root-colonizers, whereas TRFs assigned to Deltaproteobacteria became increasingly important in the root-associated community of the older root bundles. The presence of the roots thus apparently selects for a distinct bacterial community, stimulating the growth of potential symbiotic Epsilon- and Gammaproteobacteria and/or inhibiting the growth of sulfate-reducing Deltaproteobacteria. [ABSTRACT FROM AUTHOR] |
| Copyright of FEMS Microbiology Ecology is the property of Oxford University Press / USA 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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| Header | DbId: egs DbLabel: Engineering Source An: 26846587 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Different bacterial communities associated with the roots and bulk sediment of the seagrass Zostera marina. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Jensen%2C+Sheila+Ingemann%22">Jensen, Sheila Ingemann</searchLink><relatesTo>1</relatesTo><i> sijensen@bi.ku.dk</i><br /><searchLink fieldCode="AR" term="%22Kühl%2C+Michael%22">Kühl, Michael</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Priemé%2C+Anders%22">Priemé, Anders</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22FEMS+Microbiology+Ecology%22">FEMS Microbiology Ecology</searchLink>. Oct2007, Vol. 62 Issue 1, p108-117. 10p. 1 Diagram, 1 Chart, 3 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Zostera+marina%22">Zostera marina</searchLink><br /><searchLink fieldCode="DE" term="%22Fibrinogen+polymorphisms%22">Fibrinogen polymorphisms</searchLink><br /><searchLink fieldCode="DE" term="%22Dissolved+oxygen+in+water%22">Dissolved oxygen in water</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+roots%22">Plant roots</searchLink><br /><searchLink fieldCode="DE" term="%22Sediment+microbiology%22">Sediment microbiology</searchLink><br /><searchLink fieldCode="DE" term="%22Bacteria%22">Bacteria</searchLink><br /><searchLink fieldCode="DE" term="%22Polymerase+chain+reaction%22">Polymerase chain reaction</searchLink><br /><searchLink fieldCode="DE" term="%22Actinobacteria%22">Actinobacteria</searchLink><br /><searchLink fieldCode="DE" term="%22Plants%22">Plants</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The bacterial community of Zostera marina-inhabited bulk sediment vs. root-associated bacteria was investigated by terminal restriction fragment length polymorphism and sequencing, and the spatial extension of the oxygen loss from roots was determined by oxygen microsensors. Extensive oxygen loss was found in the tip region of the youngest roots, and most of the rhizoplane of Z. marina roots was thus anoxic. A significant difference between the bacterial communities associated with the roots and bulk sediment was found. No significant differences were found between differently aged root-bundles. Terminal restriction fragments (TRFs) assigned to sulfate-reducing Deltaproteobacteria showed a relative mean distribution of 12% and 23% of the PCR-amplified bacterial community in the bulk-sediment at the two sites, but only contributed <2% to the root-associated communities. TRFs assigned to Epsilonproteobacteria showed a relative mean distribution of between 5% and 11% in the root-associated communities of the youngest root bundle, in contrast to the bulk-sediment where this TRF only contributed <1.3%. TRFs assigned to Actinobacteria and Gammaproteobacteria also seemed important first root-colonizers, whereas TRFs assigned to Deltaproteobacteria became increasingly important in the root-associated community of the older root bundles. The presence of the roots thus apparently selects for a distinct bacterial community, stimulating the growth of potential symbiotic Epsilon- and Gammaproteobacteria and/or inhibiting the growth of sulfate-reducing Deltaproteobacteria. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of FEMS Microbiology Ecology is the property of Oxford University Press / USA 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.1574-6941.2007.00373.x Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 108 Subjects: – SubjectFull: Zostera marina Type: general – SubjectFull: Fibrinogen polymorphisms Type: general – SubjectFull: Dissolved oxygen in water Type: general – SubjectFull: Plant roots Type: general – SubjectFull: Sediment microbiology Type: general – SubjectFull: Bacteria Type: general – SubjectFull: Polymerase chain reaction Type: general – SubjectFull: Actinobacteria Type: general – SubjectFull: Plants Type: general Titles: – TitleFull: Different bacterial communities associated with the roots and bulk sediment of the seagrass Zostera marina. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Jensen, Sheila Ingemann – PersonEntity: Name: NameFull: Kühl, Michael – PersonEntity: Name: NameFull: Priemé, Anders IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2007 Type: published Y: 2007 Identifiers: – Type: issn-print Value: 01686496 Numbering: – Type: volume Value: 62 – Type: issue Value: 1 Titles: – TitleFull: FEMS Microbiology Ecology Type: main |
| ResultId | 1 |
