10 research outputs found
Effect of Ammonium-supplemented Seawater on Glutamine Synthetase and Glutamate Dehydrogenase Activities in Host Tissue and Zooxanthellae of Pocillopora damicornis and on Ammonium Uptake Rates of the Zooxanthellae
Host glutamine synthetase activity decreases in Pocillopora damicornis
(Linnaeus) following exposure of the coral to seawater containing elevated
ammonium (20 uM). Zooxanthellae isolated from these corals exhibited
lower ammonium uptake capacity and glutamine synthetase activity compared
with those from the control corals. Ammonium concentration of the surrounding
seawater had no effect on the NADPH-dependent glutamate dehydrogenase
activity in the host