Inhibitory Effects of Marine Alga Enteromorpha intestinalis on the Growth of the Red Tide Microalga Prorocentrum micans
The inhibitory effects of the marine green macroalga Enteromorpha intestinalis on the growth of the red tide microalga Prorocentrum micans were studied and the possible algicidal mechanisms was investigated by analysis of the activities of antioxidant enzymes, alteration of membrane permeability and ultrstructure of P. micans cells. Results indicated that the growth of P. micans was significantly inhibited by high concentrations of fresh tissues of Enteromorpha or their water phase extracts. The IC50 of the fresh tissue of E. intestinalis on P. micans for six days was 6.23 mg.mL-1 and the water phase extracts was 18.17 μg·mL-1 .The activity of SOD, CAT and GSH-PX significantly elevated through 4 h to 24 h. The level of MDA was significantly elevated indicating lipid peroxidation and oxidation stress by Enteromorpha extracts treatment. The membrane permeability was altered by Enteromorpha extracts treatment as the intracellular concentration of Na+, K+, Mg2+ and Ca2+ decreased significantly after 36 h treatment. The cellular organdies including chloroplasts and Golgi complex were seriously damaged.
Enteromorpha intestinalis Prorocentrum micans Antioxidant Membrane permeability Ultructure
Xue Sun Yumei Xia Nianjun Xu Xili Cai
Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Faculty of Life Sciences and Biotechnology Ningbo, China
国际会议
吉林
英文
300-305
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）