Ultraviolet irradiation induced oxidative stress and response of antioxidant system in an intertidal macroalgae Corallina officinalis L.

作     者：Lixia Li Jiqiang Zhao Xuexi Tang 

作者机构：College of Marine Life Science Ocean University of China Qingdao 266003 China Chemistry and Biology College Yan Tai University Yantai 264005 China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2010年第22卷第5期

页      面：716-722页

核心收录：

学科分类：0821[工学-纺织科学与工程] 070703[理学-海洋生物学] 07[理学] 0707[理学-海洋科学] 08[工学] 082101[工学-纺织工程] 

基　　金：supported by the National Natural Science Foundation of China (No. 30270258) the Natural Science Foundation of Shandong Province (No.2007ZRB01903) 

主　　题：UV-B irradiation Corallina officinalis L. superoxide dimutase catalase ascorbate peroxidase peroxidase 

摘      要：The response of the antioxidant defense system of an intertidal macroalgae Corallina officinalis *** different dosages of UV-B irradiation was *** showed that superoxide dimutase （SOD） and peroxidase （POX） increased and then maintained at a relatively stable level when subjected to UV-B *** （CAT） activity under medium dosage of UV-B irradiation （Muv） and high dosage of UV-B irradiation （Huv） treatments were significantly *** peroxidase （APX） activity first remained unaltered and then increased in Huv *** addition,the assay on isozymes was carried out using non-denaturing polyacrylamide gel electrophoresis （PAGE）.The activities of some SOD isoforms were altered by *** new bands （POX V and POX VII） appeared upon exposure to all three UV-B *** III activity was increased by low dosage of UV-B irradiation （Luv）,whereas CAT III and CAT IV disappeared when the alga was exposed to Muv and *** bands of APX （APX VI and APX VII） were increased and a new band （APX X） was observed under Huv exposure.H 2 O 2 and thiobarbituric acid reacting substance （TBARS） increased under Muv and Huv ***,UV-B protection mechanisms are partly inducible and to a certain extent sufficient to prevent the accumulation of damage in ***.