Phosphonate cycling supports methane and ethylene supersaturation in the phosphate‐depleted western North Atlantic Ocean.
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| Title: | Phosphonate cycling supports methane and ethylene supersaturation in the phosphate‐depleted western North Atlantic Ocean. |
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| Authors: | Sosa, Oscar A.1,2 (AUTHOR) ososa@pugetsound.edu, Burrell, Timothy J.1 (AUTHOR), Wilson, Samuel T.1 (AUTHOR), Foreman, Rhea K.1 (AUTHOR), Karl, David M.1 (AUTHOR), Repeta, Daniel J.3 (AUTHOR) |
| Source: | Limnology & Oceanography. Oct2020, Vol. 65 Issue 10, p2443-2459. 17p. |
| Subjects: | Organophosphorus compounds, Ocean, Atmospheric chemistry, Ethylene, Trace gases |
| Abstract: | In oligotrophic ocean regions, dissolved organic phosphorus (DOP) plays a prominent role as a source of phosphorus (P) to microorganisms. An important bioavailable component of DOP is phosphonates, organophosphorus compounds with a carbon‐phosphorus (C‐P) bond, which are ubiquitous in high molecular weight dissolved organic matter (HMWDOM). In addition to being a source of P, the degradation of phosphonates by the bacterial C‐P lyase enzymatic pathway causes the release of trace hydrocarbon gases relevant to climate and atmospheric chemistry. In this study, we investigated the roles of phosphate and phosphonate cycling in the production of methane (CH4) and ethylene (C2H4) in the western North Atlantic Ocean, a region that features a transition in phosphate concentrations from coastal to open ocean waters. We observed an inverse relationship between phosphate and the saturation state of CH4 and C2H4 in the water column, and between phosphate and the relative abundance of the C‐P lyase marker gene phnJ. In phosphate‐depleted waters, methylphosphonate and 2‐hydroxyethylphosphonate, the C‐P lyase substrates that yield CH4 and C2H4, respectively, were readily degraded in proportions consistent with their abundance and bioavailability in HMWDOM and with the concentrations of CH4 and C2H4 in the water column. We conclude that phosphonate degradation through the C‐P lyase pathway is an important source and a common production pathway of CH4 and C2H4 in the phosphate‐depleted surface waters of the western North Atlantic Ocean and that phosphate concentration can be an important control on the saturation state of these gases in the upper ocean. [ABSTRACT FROM AUTHOR] |
| Copyright of Limnology & Oceanography 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. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 146507651 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Phosphonate cycling supports methane and ethylene supersaturation in the phosphate‐depleted western North Atlantic Ocean. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Sosa%2C+Oscar+A%2E%22">Sosa, Oscar A.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> ososa@pugetsound.edu</i><br /><searchLink fieldCode="AR" term="%22Burrell%2C+Timothy+J%2E%22">Burrell, Timothy J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wilson%2C+Samuel+T%2E%22">Wilson, Samuel T.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Foreman%2C+Rhea+K%2E%22">Foreman, Rhea K.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Karl%2C+David+M%2E%22">Karl, David M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Repeta%2C+Daniel+J%2E%22">Repeta, Daniel J.</searchLink><relatesTo>3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Limnology+%26+Oceanography%22">Limnology & Oceanography</searchLink>. Oct2020, Vol. 65 Issue 10, p2443-2459. 17p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Organophosphorus+compounds%22">Organophosphorus compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Ocean%22">Ocean</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+chemistry%22">Atmospheric chemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Ethylene%22">Ethylene</searchLink><br /><searchLink fieldCode="DE" term="%22Trace+gases%22">Trace gases</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In oligotrophic ocean regions, dissolved organic phosphorus (DOP) plays a prominent role as a source of phosphorus (P) to microorganisms. An important bioavailable component of DOP is phosphonates, organophosphorus compounds with a carbon‐phosphorus (C‐P) bond, which are ubiquitous in high molecular weight dissolved organic matter (HMWDOM). In addition to being a source of P, the degradation of phosphonates by the bacterial C‐P lyase enzymatic pathway causes the release of trace hydrocarbon gases relevant to climate and atmospheric chemistry. In this study, we investigated the roles of phosphate and phosphonate cycling in the production of methane (CH4) and ethylene (C2H4) in the western North Atlantic Ocean, a region that features a transition in phosphate concentrations from coastal to open ocean waters. We observed an inverse relationship between phosphate and the saturation state of CH4 and C2H4 in the water column, and between phosphate and the relative abundance of the C‐P lyase marker gene phnJ. In phosphate‐depleted waters, methylphosphonate and 2‐hydroxyethylphosphonate, the C‐P lyase substrates that yield CH4 and C2H4, respectively, were readily degraded in proportions consistent with their abundance and bioavailability in HMWDOM and with the concentrations of CH4 and C2H4 in the water column. We conclude that phosphonate degradation through the C‐P lyase pathway is an important source and a common production pathway of CH4 and C2H4 in the phosphate‐depleted surface waters of the western North Atlantic Ocean and that phosphate concentration can be an important control on the saturation state of these gases in the upper ocean. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Limnology & Oceanography 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: 10.1002/lno.11463 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 2443 Subjects: – SubjectFull: Organophosphorus compounds Type: general – SubjectFull: Ocean Type: general – SubjectFull: Atmospheric chemistry Type: general – SubjectFull: Ethylene Type: general – SubjectFull: Trace gases Type: general Titles: – TitleFull: Phosphonate cycling supports methane and ethylene supersaturation in the phosphate‐depleted western North Atlantic Ocean. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Sosa, Oscar A. – PersonEntity: Name: NameFull: Burrell, Timothy J. – PersonEntity: Name: NameFull: Wilson, Samuel T. – PersonEntity: Name: NameFull: Foreman, Rhea K. – PersonEntity: Name: NameFull: Karl, David M. – PersonEntity: Name: NameFull: Repeta, Daniel J. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2020 Type: published Y: 2020 Identifiers: – Type: issn-print Value: 00243590 Numbering: – Type: volume Value: 65 – Type: issue Value: 10 Titles: – TitleFull: Limnology & Oceanography Type: main |
| ResultId | 1 |
