Reversible intracellular acidification and depletion of NTPs provide a potential physiological origin for centuries of dormancy in an Antarctic freshwater copepod
A great diversity of crustacean zooplankton found in inland and coastal waters produce embryos that settle into bottom sediments to form an egg bank. Embryos from these banks can remain dormant for centuries, creating a reservoir of genetic diversity. A large body of literature describes the ecologi...
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ftunivnorthcag:oai:libres.uncg.edu/47227 2024-10-20T14:03:40+00:00 Reversible intracellular acidification and depletion of NTPs provide a potential physiological origin for centuries of dormancy in an Antarctic freshwater copepod Covi, Joseph A. NC DOCKS at The University of North Carolina Wilmington Reed, Katherine A. Williamson, R. Thomas 2023 http://libres.uncg.edu/ir/uncw/f/CoviJ2023.pdf English eng http://libres.uncg.edu/ir/uncw/f/CoviJ2023.pdf 2023 ftunivnorthcag 2024-10-08T15:22:15Z A great diversity of crustacean zooplankton found in inland and coastal waters produce embryos that settle into bottom sediments to form an egg bank. Embryos from these banks can remain dormant for centuries, creating a reservoir of genetic diversity. A large body of literature describes the ecological and evolutionary importance of zooplankton egg banks. However, literature on the physiological traits behind dormancy in crustacean zooplankton are limited. Most data on the physiology of dormancy comes from research on one species of anostracan, the brine shrimp, Artemia franciscana. Anoxia-induced dormancy in this species is facilitated by a profound and reversible acidification of the intracellular space. This acidification is accompanied by a reversible depletion of adenosine triphosphate (ATP). The present study demonstrates that acidification of the intracellular space also occurs in concert with a depletion of nucleoside triphosphates (NTPs) in the Antarctic copepod, Boeckella poppei. Like A. franciscana, the depletion of NTPs and acidification are rapidly reversed during aerobic recovery in B. poppei. These data provide the first comparative evidence that extreme dormancy under anoxia in crustacean zooplankton is associated with intracellular acidification and an ability to recover from the depletion of ATP. (Creative Commons Licenses: http://creativecommons.org/licenses/by/4.0/ ) Other/Unknown Material Antarc* Antarctic University of North Carolina: NC DOCKS (Digital Online Collection of Knowledge and Scholarship) Antarctic Boeckella ENVELOPE(-56.999,-56.999,-63.404,-63.404) The Antarctic |
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University of North Carolina: NC DOCKS (Digital Online Collection of Knowledge and Scholarship) |
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ftunivnorthcag |
language |
English |
description |
A great diversity of crustacean zooplankton found in inland and coastal waters produce embryos that settle into bottom sediments to form an egg bank. Embryos from these banks can remain dormant for centuries, creating a reservoir of genetic diversity. A large body of literature describes the ecological and evolutionary importance of zooplankton egg banks. However, literature on the physiological traits behind dormancy in crustacean zooplankton are limited. Most data on the physiology of dormancy comes from research on one species of anostracan, the brine shrimp, Artemia franciscana. Anoxia-induced dormancy in this species is facilitated by a profound and reversible acidification of the intracellular space. This acidification is accompanied by a reversible depletion of adenosine triphosphate (ATP). The present study demonstrates that acidification of the intracellular space also occurs in concert with a depletion of nucleoside triphosphates (NTPs) in the Antarctic copepod, Boeckella poppei. Like A. franciscana, the depletion of NTPs and acidification are rapidly reversed during aerobic recovery in B. poppei. These data provide the first comparative evidence that extreme dormancy under anoxia in crustacean zooplankton is associated with intracellular acidification and an ability to recover from the depletion of ATP. (Creative Commons Licenses: http://creativecommons.org/licenses/by/4.0/ ) |
author |
Covi, Joseph A. NC DOCKS at The University of North Carolina Wilmington Reed, Katherine A. Williamson, R. Thomas |
spellingShingle |
Covi, Joseph A. NC DOCKS at The University of North Carolina Wilmington Reed, Katherine A. Williamson, R. Thomas Reversible intracellular acidification and depletion of NTPs provide a potential physiological origin for centuries of dormancy in an Antarctic freshwater copepod |
author_facet |
Covi, Joseph A. NC DOCKS at The University of North Carolina Wilmington Reed, Katherine A. Williamson, R. Thomas |
author_sort |
Covi, Joseph A. |
title |
Reversible intracellular acidification and depletion of NTPs provide a potential physiological origin for centuries of dormancy in an Antarctic freshwater copepod |
title_short |
Reversible intracellular acidification and depletion of NTPs provide a potential physiological origin for centuries of dormancy in an Antarctic freshwater copepod |
title_full |
Reversible intracellular acidification and depletion of NTPs provide a potential physiological origin for centuries of dormancy in an Antarctic freshwater copepod |
title_fullStr |
Reversible intracellular acidification and depletion of NTPs provide a potential physiological origin for centuries of dormancy in an Antarctic freshwater copepod |
title_full_unstemmed |
Reversible intracellular acidification and depletion of NTPs provide a potential physiological origin for centuries of dormancy in an Antarctic freshwater copepod |
title_sort |
reversible intracellular acidification and depletion of ntps provide a potential physiological origin for centuries of dormancy in an antarctic freshwater copepod |
publishDate |
2023 |
url |
http://libres.uncg.edu/ir/uncw/f/CoviJ2023.pdf |
long_lat |
ENVELOPE(-56.999,-56.999,-63.404,-63.404) |
geographic |
Antarctic Boeckella The Antarctic |
geographic_facet |
Antarctic Boeckella The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://libres.uncg.edu/ir/uncw/f/CoviJ2023.pdf |
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1813448867226583040 |