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1000
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Abstract/Summary
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<jats:p>This study compares salinity tolerance between red and black shell <jats:italic>Pinctada fucata</jats:italic> salinity stress of 20 and 50‰, while 35‰ was used as a control. The hemolymph osmotic pressure, inorganic ion concentration, the activities of Na<jats:sup>+</jats:sup>-K<jats:sup>+</jats:sup> -ATPase, respiratory metabolism related enzymes and liver tissue antioxidant related enzymes were measured at 12 and 24 h after salinity stress. The osmotic pressure and inorganic ion concentration of hemolymph of two strains <jats:italic>P. fucata</jats:italic> increased significantly with the increase of salinity. The activity of Na<jats:sup>+</jats:sup>-K<jats:sup>+</jats:sup> -ATPase of red <jats:italic>P. fucata</jats:italic> only decreased under low salinity at 24 h, and was significantly higher than that the control under low salinity at 12 h and high salinity at 12 and 24 h. The succinate dehydrogenase (SDH) activities of the <jats:italic>P. fucata</jats:italic> treatment groups were significantly higher than those the control at 12 h. The lactate dehydrogenase (LDH) activity increased significantly with salinity at 12 h. and the black <jats:italic>P. fucata</jats:italic> LDH activity was significantly higher than the control at 24 h, while the LDH activity of red <jats:italic>P. fucata</jats:italic> was significantly lower than that the control in 50‰ salinity. The superoxide dismutase (SOD) activity of black <jats:italic>P. fucata</jats:italic> was significantly lower than that the control, while that of red <jats:italic>P. fucata</jats:italic> was significantly higher than that the control within 24. At 12 h, the catalase (CAT) activity of red <jats:italic>P. fucata</jats:italic> increased significantly with salinity, but decreased significantly with salinity at 24 h. The CAT activity of black <jats:italic>P. fucata</jats:italic> was highest at 24 h under low salinity. Glutathione peroxidase (GSH-Px) and alkaline phosphatase (AKP) activities of red <jats:italic>P. fucata</jats:italic> were significantly higher than those the control under low or high salinity. At high salinity for 24 h, the GSH-Px activity was lowest in black <jats:italic>P. fucata</jats:italic>, AKP activity was highest. The present study indicates that the physical responses of <jats:italic>P. fucata</jats:italic> to the salinity stress vary with shell colors. The red <jats:italic>P. fucata</jats:italic> can quickly respond positively to the change of environmental salinity and reduce the damage caused by the change of environmental salinity.</jats:p>
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1000
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Hinweis
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DeepGreen-ID: 5c3459541b784b15bf9c63e066cb06fb ; metadata provieded by: DeepGreen (https://www.oa-deepgreen.de/api/v1/), LIVIVO search scope life sciences (http://z3950.zbmed.de:6210/livivo), Crossref Unified Resource API (https://api.crossref.org/swagger-ui/index.html), to.science.api (https://frl.publisso.de/), ZDB JSON-API (beta) (https://zeitschriftendatenbank.de/api/), lobid - Dateninfrastruktur für Bibliotheken (https://lobid.org/resources/search)
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