Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic
In certain regions of the predominantly nitrogen limited ocean, microbes can become co-limited by phosphorus. Within such regions, a proportion of the dissolved organic phosphorus pool can be accessed by microbes employing a variety of alkaline phosphatase (APase) enzymes. In contrast to the PhoA fa...
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ftsouthampton:oai:eprints.soton.ac.uk:410060 2023-07-30T04:05:14+02:00 Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic Browning, Thomas Achterberg, Eric Yong, Jaw Rapp, Insa Utermann, Caroline Engel, Anja Moore, Christopher 2017-05-19 text https://eprints.soton.ac.uk/410060/ https://eprints.soton.ac.uk/410060/1/109019_2_attach_0_kn49x7_Browning.pdf https://eprints.soton.ac.uk/410060/2/ncomms15465.pdf en English eng https://eprints.soton.ac.uk/410060/1/109019_2_attach_0_kn49x7_Browning.pdf https://eprints.soton.ac.uk/410060/2/ncomms15465.pdf Browning, Thomas, Achterberg, Eric, Yong, Jaw, Rapp, Insa, Utermann, Caroline, Engel, Anja and Moore, Christopher (2017) Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic. Nature Communications, 8, [15465]. (doi:10.1038/ncomms15465 <http://dx.doi.org/10.1038/ncomms15465>). cc_by_4 Article PeerReviewed 2017 ftsouthampton https://doi.org/10.1038/ncomms15465 2023-07-09T22:14:58Z In certain regions of the predominantly nitrogen limited ocean, microbes can become co-limited by phosphorus. Within such regions, a proportion of the dissolved organic phosphorus pool can be accessed by microbes employing a variety of alkaline phosphatase (APase) enzymes. In contrast to the PhoA family of APases that utilize zinc as a cofactor, the recent discovery of iron as a cofactor in the more widespread PhoX and PhoD implies the potential for a biochemically dependant interplay between oceanic zinc, iron and phosphorus cycles. Here we demonstrate enhanced natural community APase activity following iron amendment within the low zinc and moderately low iron Western North Atlantic. In contrast we find no evidence for trace metal limitation of APase activity beneath the Saharan dust plume in the Eastern Atlantic. Such intermittent iron limitation of microbial phosphorus acquisition provides an additional facet in the argument for iron controlling the coupling between oceanic nitrogen and phosphorus cycles. Article in Journal/Newspaper North Atlantic University of Southampton: e-Prints Soton Nature Communications 8 1 |
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Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
In certain regions of the predominantly nitrogen limited ocean, microbes can become co-limited by phosphorus. Within such regions, a proportion of the dissolved organic phosphorus pool can be accessed by microbes employing a variety of alkaline phosphatase (APase) enzymes. In contrast to the PhoA family of APases that utilize zinc as a cofactor, the recent discovery of iron as a cofactor in the more widespread PhoX and PhoD implies the potential for a biochemically dependant interplay between oceanic zinc, iron and phosphorus cycles. Here we demonstrate enhanced natural community APase activity following iron amendment within the low zinc and moderately low iron Western North Atlantic. In contrast we find no evidence for trace metal limitation of APase activity beneath the Saharan dust plume in the Eastern Atlantic. Such intermittent iron limitation of microbial phosphorus acquisition provides an additional facet in the argument for iron controlling the coupling between oceanic nitrogen and phosphorus cycles. |
format |
Article in Journal/Newspaper |
author |
Browning, Thomas Achterberg, Eric Yong, Jaw Rapp, Insa Utermann, Caroline Engel, Anja Moore, Christopher |
spellingShingle |
Browning, Thomas Achterberg, Eric Yong, Jaw Rapp, Insa Utermann, Caroline Engel, Anja Moore, Christopher Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic |
author_facet |
Browning, Thomas Achterberg, Eric Yong, Jaw Rapp, Insa Utermann, Caroline Engel, Anja Moore, Christopher |
author_sort |
Browning, Thomas |
title |
Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic |
title_short |
Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic |
title_full |
Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic |
title_fullStr |
Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic |
title_full_unstemmed |
Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic |
title_sort |
iron limitation of microbial phosphorus acquisition in the tropical north atlantic |
publishDate |
2017 |
url |
https://eprints.soton.ac.uk/410060/ https://eprints.soton.ac.uk/410060/1/109019_2_attach_0_kn49x7_Browning.pdf https://eprints.soton.ac.uk/410060/2/ncomms15465.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://eprints.soton.ac.uk/410060/1/109019_2_attach_0_kn49x7_Browning.pdf https://eprints.soton.ac.uk/410060/2/ncomms15465.pdf Browning, Thomas, Achterberg, Eric, Yong, Jaw, Rapp, Insa, Utermann, Caroline, Engel, Anja and Moore, Christopher (2017) Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic. Nature Communications, 8, [15465]. (doi:10.1038/ncomms15465 <http://dx.doi.org/10.1038/ncomms15465>). |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1038/ncomms15465 |
container_title |
Nature Communications |
container_volume |
8 |
container_issue |
1 |
_version_ |
1772817036102074368 |