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Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (17): 12-19.doi: 10.11924/j.issn.1000-6850.casb16010084

Special Issue: 生物技术

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Nitrogen and Phosphorus Affecting Activities of Catalase and Superoxide Dismutase in Coral

  

  • Received:2016-01-18 Revised:2016-05-30 Accepted:2016-03-25 Online:2016-06-20 Published:2016-06-20

Abstract: To study the effects of nitrogen and phosphorus on the activities of catalase (CAT) and superoxide dismutase (SOD) in Goniopora stutchburyi, Goniopora duofasciata and Porites lutea, nitrate, ammonium and phosphate were used to conduct the experiments. And the concentrations of the above nutrients were set to be in low, medium and high level, respectively, and the cultivation of the corals lasted for 8 weeks. The results indicated that activities of CAT in G. stutchburyi exposed to medium concentration of nitrate and ammonium , activities of SOD exposed to high concentrations of nitrate and phosphate and to medium concentrations of ammonium reached the highest; Activities of CAT in G. duofasciata exposed to medium concentration of nitrate, ammonium and phosphate, activities of SOD exposed to medium concentrations of nitrate and ammonium and to high concentrations of phosphate reached the highest; Activities of CAT and SOD in P. Lutea with control group reached the highest,it showed poor tolerance to nutrients; CAT and SOD in Goniopora stutchburyi, Goniopora duofasciata and Porites lutea had peaks, and there were significant differences in enzymatic activity among different time points(P<0.05).It was the critical value from adaptation to toxic reaction under stress of nutrients, it illustrated that corals could be the indirectly indicator organism for evaluating the nutrient enrichment degree of marine environment.