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Characterization of Adaptations that Confer Increased Resistance to High Salinity in Brine Shrimp.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Characterization of Adaptations that Confer Increased Resistance to High Salinity in Brine Shrimp./
作者:	Hatcher-Moorman, Jasmine.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2022,
面頁冊數:	51 p.
附註:	Source: Masters Abstracts International, Volume: 84-01.
Contained By:	Masters Abstracts International84-01.
標題:	Biology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29061202
ISBN:	9798834025832

Characterization of Adaptations that Confer Increased Resistance to High Salinity in Brine Shrimp.
Hatcher-Moorman, Jasmine.

Characterization of Adaptations that Confer Increased Resistance to High Salinity in Brine Shrimp. - Ann Arbor : ProQuest Dissertations & Theses, 2022 - 51 p.

Source: Masters Abstracts International, Volume: 84-01.

Thesis (M.S.)--Illinois State University, 2022.

This item must not be sold to any third party vendors.

Brine shrimp (Artemia salina) are osmoregulators that survive in ~4.5 M salt. Osmoregulating organs in brine shrimp are predicted to mimic a mechanism of osmoregulation in teleost fish involving NKA, NKCC, CFTR-like Cl- channels, and sodium-specific transport through tight paracelleular tight junctions in gut and gill epithelia. Pharmocological studies of low and high salt adapted brine shrimp show that key transporters involved in teleost fish osmoregulation are also vital to brine shrimp survival in hypersaline environments. Artemia express two Na/K pump isozymes formed by different α-submits associating with a common β-subunit. A "normal" α-subunit (α1NN) or a special α-subunit (α2KK) containing two asparagine-to-lysine substitutions in the ion-binding region are known to play a role. Increased expression of α2KK in high salt adapted brine suggest the importance of the isozyme, but functionality of α2KK in Artemia is poorly understood. We introduced constructs containing full-length Artemia NKA isoforms α1NN/α2KK and functionally evaluated the constructs with electrophysiology in Xenopus oocytes. Electrophysiology studies reveal functional differences in Artemia NKA isozymes that imply importance in adaptation to hypersaline environments.

ISBN: 9798834025832Subjects--Topical Terms:

522710
Biology.
Subjects--Index Terms:

α2KK

Characterization of Adaptations that Confer Increased Resistance to High Salinity in Brine Shrimp.
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520 $a Brine shrimp (Artemia salina) are osmoregulators that survive in ~4.5 M salt. Osmoregulating organs in brine shrimp are predicted to mimic a mechanism of osmoregulation in teleost fish involving NKA, NKCC, CFTR-like Cl- channels, and sodium-specific transport through tight paracelleular tight junctions in gut and gill epithelia. Pharmocological studies of low and high salt adapted brine shrimp show that key transporters involved in teleost fish osmoregulation are also vital to brine shrimp survival in hypersaline environments. Artemia express two Na/K pump isozymes formed by different α-submits associating with a common β-subunit. A "normal" α-subunit (α1NN) or a special α-subunit (α2KK) containing two asparagine-to-lysine substitutions in the ion-binding region are known to play a role. Increased expression of α2KK in high salt adapted brine suggest the importance of the isozyme, but functionality of α2KK in Artemia is poorly understood. We introduced constructs containing full-length Artemia NKA isoforms α1NN/α2KK and functionally evaluated the constructs with electrophysiology in Xenopus oocytes. Electrophysiology studies reveal functional differences in Artemia NKA isozymes that imply importance in adaptation to hypersaline environments.
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653 $a α2KK
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653 $a Teleost
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