Metabolic Capacity of the Antarctic Cyanobacterium That Sustains Oxygenic Photosynthesis in the Presence of Hydrogen Sulfide
Sulfide inhibits oxygenic photosynthesis by blocking electron transfer between HO and the oxygen-evolving complex in the D1 protein of Photosystem II. The ability of cyanobacteria to counter this effect has implications for understanding the productivity of benthic microbial mats in sulfidic environ...
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Online Access: | https://digitalcommons.lsu.edu/geo_pubs/2078 https://doi.org/10.3390/genes12030426 |
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ftlouisianastuir:oai:digitalcommons.lsu.edu:geo_pubs-3077 2023-06-11T04:04:51+02:00 Metabolic Capacity of the Antarctic Cyanobacterium That Sustains Oxygenic Photosynthesis in the Presence of Hydrogen Sulfide Lumian, Jessica E Jungblut, Anne D Dillion, Megan L Hawes, Ian Doran, Peter T Mackey, Tyler J Dick, Gregory J Grettenberger, Christen L Sumner, Dawn Y 2021-03-16T07:00:00Z https://digitalcommons.lsu.edu/geo_pubs/2078 https://doi.org/10.3390/genes12030426 unknown LSU Digital Commons https://digitalcommons.lsu.edu/geo_pubs/2078 doi:10.3390/genes12030426 Faculty Publications Antarctica cryosphere cyanobacteria genomics lake photosynthesis sulfide text 2021 ftlouisianastuir https://doi.org/10.3390/genes12030426 2023-05-28T18:52:22Z Sulfide inhibits oxygenic photosynthesis by blocking electron transfer between HO and the oxygen-evolving complex in the D1 protein of Photosystem II. The ability of cyanobacteria to counter this effect has implications for understanding the productivity of benthic microbial mats in sulfidic environments throughout Earth history. In Lake Fryxell, Antarctica, the benthic, filamentous cyanobacterium creates a 1-2 mm thick layer of 50 µmol L O in otherwise sulfidic water, demonstrating that it sustains oxygenic photosynthesis in the presence of sulfide. A metagenome-assembled genome of indicates a genetic capacity for oxygenic photosynthesis, including multiple copies of (encoding the D1 protein of Photosystem II), and anoxygenic photosynthesis with a copy of (encoding the sulfide quinone reductase protein that oxidizes sulfide). The genomic content of is consistent with sulfide tolerance mechanisms including increasing expression or directly oxidizing sulfide with sulfide quinone reductase. However, the ability of the organism to reduce Photosystem I via sulfide quinone reductase while Photosystem II is sulfide-inhibited, thereby performing anoxygenic photosynthesis in the presence of sulfide, has yet to be demonstrated. Text Antarc* Antarctic Antarctica LSU Digital Commons (Louisiana State University) Antarctic The Antarctic Fryxell ENVELOPE(163.183,163.183,-77.617,-77.617) Lake Fryxell ENVELOPE(163.183,163.183,-77.617,-77.617) Genes 12 3 426 |
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Open Polar |
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LSU Digital Commons (Louisiana State University) |
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ftlouisianastuir |
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unknown |
topic |
Antarctica cryosphere cyanobacteria genomics lake photosynthesis sulfide |
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Antarctica cryosphere cyanobacteria genomics lake photosynthesis sulfide Lumian, Jessica E Jungblut, Anne D Dillion, Megan L Hawes, Ian Doran, Peter T Mackey, Tyler J Dick, Gregory J Grettenberger, Christen L Sumner, Dawn Y Metabolic Capacity of the Antarctic Cyanobacterium That Sustains Oxygenic Photosynthesis in the Presence of Hydrogen Sulfide |
topic_facet |
Antarctica cryosphere cyanobacteria genomics lake photosynthesis sulfide |
description |
Sulfide inhibits oxygenic photosynthesis by blocking electron transfer between HO and the oxygen-evolving complex in the D1 protein of Photosystem II. The ability of cyanobacteria to counter this effect has implications for understanding the productivity of benthic microbial mats in sulfidic environments throughout Earth history. In Lake Fryxell, Antarctica, the benthic, filamentous cyanobacterium creates a 1-2 mm thick layer of 50 µmol L O in otherwise sulfidic water, demonstrating that it sustains oxygenic photosynthesis in the presence of sulfide. A metagenome-assembled genome of indicates a genetic capacity for oxygenic photosynthesis, including multiple copies of (encoding the D1 protein of Photosystem II), and anoxygenic photosynthesis with a copy of (encoding the sulfide quinone reductase protein that oxidizes sulfide). The genomic content of is consistent with sulfide tolerance mechanisms including increasing expression or directly oxidizing sulfide with sulfide quinone reductase. However, the ability of the organism to reduce Photosystem I via sulfide quinone reductase while Photosystem II is sulfide-inhibited, thereby performing anoxygenic photosynthesis in the presence of sulfide, has yet to be demonstrated. |
format |
Text |
author |
Lumian, Jessica E Jungblut, Anne D Dillion, Megan L Hawes, Ian Doran, Peter T Mackey, Tyler J Dick, Gregory J Grettenberger, Christen L Sumner, Dawn Y |
author_facet |
Lumian, Jessica E Jungblut, Anne D Dillion, Megan L Hawes, Ian Doran, Peter T Mackey, Tyler J Dick, Gregory J Grettenberger, Christen L Sumner, Dawn Y |
author_sort |
Lumian, Jessica E |
title |
Metabolic Capacity of the Antarctic Cyanobacterium That Sustains Oxygenic Photosynthesis in the Presence of Hydrogen Sulfide |
title_short |
Metabolic Capacity of the Antarctic Cyanobacterium That Sustains Oxygenic Photosynthesis in the Presence of Hydrogen Sulfide |
title_full |
Metabolic Capacity of the Antarctic Cyanobacterium That Sustains Oxygenic Photosynthesis in the Presence of Hydrogen Sulfide |
title_fullStr |
Metabolic Capacity of the Antarctic Cyanobacterium That Sustains Oxygenic Photosynthesis in the Presence of Hydrogen Sulfide |
title_full_unstemmed |
Metabolic Capacity of the Antarctic Cyanobacterium That Sustains Oxygenic Photosynthesis in the Presence of Hydrogen Sulfide |
title_sort |
metabolic capacity of the antarctic cyanobacterium that sustains oxygenic photosynthesis in the presence of hydrogen sulfide |
publisher |
LSU Digital Commons |
publishDate |
2021 |
url |
https://digitalcommons.lsu.edu/geo_pubs/2078 https://doi.org/10.3390/genes12030426 |
long_lat |
ENVELOPE(163.183,163.183,-77.617,-77.617) ENVELOPE(163.183,163.183,-77.617,-77.617) |
geographic |
Antarctic The Antarctic Fryxell Lake Fryxell |
geographic_facet |
Antarctic The Antarctic Fryxell Lake Fryxell |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Faculty Publications |
op_relation |
https://digitalcommons.lsu.edu/geo_pubs/2078 doi:10.3390/genes12030426 |
op_doi |
https://doi.org/10.3390/genes12030426 |
container_title |
Genes |
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12 |
container_issue |
3 |
container_start_page |
426 |
_version_ |
1768391255984701440 |