Effects of nutrients, salinity, pH and light:dark cycle on the production of reactive oxygen species in the alga Chattonella marina
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2007-06-03Author
Liu, Wenhua
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Au, Doris W. T.
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Anderson, Donald M.
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Lam, Paul K. S.
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Wu, Rudolf S. S.
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https://hdl.handle.net/1912/1764As published
https://doi.org/10.1016/j.jembe.2007.03.007Keyword
Chattonella marina; Reactive oxygen species; Iron; Nutrient; pH; Physical parameters; Plasma membrane; RedoxAbstract
Experiments were carried out to investigate the effects of nutrients, salinity, pH and light:dark cycle on growth rate and production of reactive oxygen species (ROS) by Chattonella marina, a harmful algal bloom (HAB) species that often causes fish kills. Different nitrogen forms (organic-N and inorganic-N), N:P ratios, light:dark cycles and salinity significantly influenced algal growth, but not ROS production. However, iron concentration and pH significantly affected both growth and ROS production in C. marina. KCN (an inhibitor of mitochondrial respiration) and 3-(3,4-dichlorophenyl)-1,1-dimethylurea (an inhibitor of photosynthesis) had no significant effects on ROS production. Vitamin K3 (a plasma membrane electron shuttle) enhanced ROS production while its antagonist, dicumarol, decreased ROS production. Taken together, our results suggest that ROS production by C. marina is related to a plasma membrane enzyme system regulated by iron availability but is independent of growth, photosynthesis, availability of macronutrients, salinity and irradiance.
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Author Posting. © Elsevier B.V., 2007. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Journal of Experimental Marine Biology and Ecology 346 (2007): 76-86, doi:10.1016/j.jembe.2007.03.007.
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Preprint: Liu, Wenhua, Au, Doris W. T., Anderson, Donald M., Lam, Paul K. S., Wu, Rudolf S. S., "Effects of nutrients, salinity, pH and light:dark cycle on the production of reactive oxygen species in the alga Chattonella marina", 2007-06-03, https://doi.org/10.1016/j.jembe.2007.03.007, https://hdl.handle.net/1912/1764Related items
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Schneider, Robin J.; Roe, Kelly L.; Hansel, Colleen M.; Voelker, Bettina M. (Frontiers Media, 2016-03-30)Biological production and decay of the reactive oxygen species (ROS) hydrogen peroxide (H2O2) and superoxide (O−2) likely have significant effects on the cycling of trace metals and carbon in marine systems. In this study, ... -
Antioxidant responses and lipid peroxidation in gills and erythrocytes of fish (Rhabdosarga sarba) upon exposure to Chattonella marina and hydrogen peroxide : implications on the cause of fish kills
Woo, Stephanie P. S.; Liu, Wenhua; Au, Doris W. T.; Anderson, Donald M.; Wu, Rudolf S. S. (2006-05-20)Chattonella marina, a red tide or harmful algal bloom species, has caused mass fish kills and serious economic loss worldwide, and yet its toxic actions remain highly controversial. Previous studies have shown that this ... -
Hydrogen peroxide is not the cause of fish kills associated with Chattonella marina : cytological and physiological evidence
Tang, Janet Y. M.; Anderson, Donald M.; Au, Doris W. T. (2005-01-05)Chattonella marina, a harmful algal bloom (HAB) causative species, was used to study the mortality, physiology, and pathology of a marine stenohaline fish, goldlined seabream exposed to the toxic alga. The median lethal ...