Community composition of ammonia-oxidizing archaea from surface and anoxic depths of oceanic oxygen minimum zones
Ammonia-oxidizing archaea (AOA) have been reported at high abundance in much of the global ocean, even in environments, such as pelagic oxygen minimum zones (OMZs), where conditions seem unlikely to support aerobic ammonium oxidation. Due to the lack of information on any potential alternative metab...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2013-07-01
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| Series: | Frontiers in Microbiology |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fmicb.2013.00177/full |
| _version_ | 1818243150377910272 |
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| author | Xuefeng ePeng Amal eJayakumar Bess B Ward |
| author_facet | Xuefeng ePeng Amal eJayakumar Bess B Ward |
| author_sort | Xuefeng ePeng |
| collection | DOAJ |
| description | Ammonia-oxidizing archaea (AOA) have been reported at high abundance in much of the global ocean, even in environments, such as pelagic oxygen minimum zones (OMZs), where conditions seem unlikely to support aerobic ammonium oxidation. Due to the lack of information on any potential alternative metabolism of AOA, the AOA community composition might be expected to differ between oxic and anoxic environments, indicating some difference in ecology and/or physiology of the AOA assemblage. This hypothesis was tested by evaluating AOA community composition using a functional gene microarray that targets the ammonia monooxygenase gene subunit A (amoA). The relationship between environmental parameters and the biogeography of the Arabian Sea and the Eastern Tropical South Pacific (ETSP) AOA assemblages was investigated using principal component analysis (PCA) and redundancy analysis (RDA). In both the Arabian Sea and the ETSP, AOA communities within the core of the OMZ were not significantly different from those inhabiting the oxygenated surface waters above the OMZ. The AOA communities in the Arabian Sea were significantly different from those in the ETSP. In both oceans, the abundance of archaeal amoA gene in the core of the OMZ was higher than that in the surface waters. Our results indicate that AOA communities are distinguished by their geographic origin. RDA suggested that temperature was the main factor that correlated with the differences between the AOA communities from the Arabian Sea and those from the ETSP. Physicochemical properties that characterized the different environments of the OMZ and surface waters played a less important role, than did geography, in shaping the AOA community composition. |
| first_indexed | 2024-12-12T13:56:33Z |
| format | Article |
| id | doaj.art-5ede8ef405bd494bb1fd585fcb0d429c |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-12-12T13:56:33Z |
| publishDate | 2013-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-5ede8ef405bd494bb1fd585fcb0d429c2022-12-22T00:22:27ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2013-07-01410.3389/fmicb.2013.0017745330Community composition of ammonia-oxidizing archaea from surface and anoxic depths of oceanic oxygen minimum zonesXuefeng ePeng0Amal eJayakumar1Bess B Ward2Princeton UniversityPrinceton UniversityPrinceton UniversityAmmonia-oxidizing archaea (AOA) have been reported at high abundance in much of the global ocean, even in environments, such as pelagic oxygen minimum zones (OMZs), where conditions seem unlikely to support aerobic ammonium oxidation. Due to the lack of information on any potential alternative metabolism of AOA, the AOA community composition might be expected to differ between oxic and anoxic environments, indicating some difference in ecology and/or physiology of the AOA assemblage. This hypothesis was tested by evaluating AOA community composition using a functional gene microarray that targets the ammonia monooxygenase gene subunit A (amoA). The relationship between environmental parameters and the biogeography of the Arabian Sea and the Eastern Tropical South Pacific (ETSP) AOA assemblages was investigated using principal component analysis (PCA) and redundancy analysis (RDA). In both the Arabian Sea and the ETSP, AOA communities within the core of the OMZ were not significantly different from those inhabiting the oxygenated surface waters above the OMZ. The AOA communities in the Arabian Sea were significantly different from those in the ETSP. In both oceans, the abundance of archaeal amoA gene in the core of the OMZ was higher than that in the surface waters. Our results indicate that AOA communities are distinguished by their geographic origin. RDA suggested that temperature was the main factor that correlated with the differences between the AOA communities from the Arabian Sea and those from the ETSP. Physicochemical properties that characterized the different environments of the OMZ and surface waters played a less important role, than did geography, in shaping the AOA community composition.http://journal.frontiersin.org/Journal/10.3389/fmicb.2013.00177/fullqPCRammonia-oxidizing archaeacommunity compositionOxygen Minimum ZonesAOAArabian Sea |
| spellingShingle | Xuefeng ePeng Amal eJayakumar Bess B Ward Community composition of ammonia-oxidizing archaea from surface and anoxic depths of oceanic oxygen minimum zones Frontiers in Microbiology qPCR ammonia-oxidizing archaea community composition Oxygen Minimum Zones AOA Arabian Sea |
| title | Community composition of ammonia-oxidizing archaea from surface and anoxic depths of oceanic oxygen minimum zones |
| title_full | Community composition of ammonia-oxidizing archaea from surface and anoxic depths of oceanic oxygen minimum zones |
| title_fullStr | Community composition of ammonia-oxidizing archaea from surface and anoxic depths of oceanic oxygen minimum zones |
| title_full_unstemmed | Community composition of ammonia-oxidizing archaea from surface and anoxic depths of oceanic oxygen minimum zones |
| title_short | Community composition of ammonia-oxidizing archaea from surface and anoxic depths of oceanic oxygen minimum zones |
| title_sort | community composition of ammonia oxidizing archaea from surface and anoxic depths of oceanic oxygen minimum zones |
| topic | qPCR ammonia-oxidizing archaea community composition Oxygen Minimum Zones AOA Arabian Sea |
| url | http://journal.frontiersin.org/Journal/10.3389/fmicb.2013.00177/full |
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