Allelopathic effect of Ruppia maritima on Chlorella vulgaris and Microcystis aeruginosa
ZHANG Xin1,2,3, LU Xue-qiang1,2,3, WANG Lan1,2, HAN Xiao-xin1,2, MAO Hai-yan4
1. College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China;
2. Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin 300350, China;
3. Tianjin International Joint Research Center for Environmental Biogeochemical Technology, Nankai University, Tianjin 300350, China;
4. Xiamen Ocean Rock Ecology & Environment Co., Ltd, Xiamen 361023, China
One submerged macrophyte (Ruppia maritima) and two algae (Chlorella vulgaris and Microcystis aeruginosa) were selected to test the allelopathic effect of submerged macrophyte on algae. The parameters including optical density, chlorophyll a, maximum photochemical quantum yield, relative electron transport rate, soluble sugar, malondialdehyde, and superoxide dismutase activity were measured for three co-culture treatments of Ruppia maritima + Chlorella vulgaris, Ruppia maritima + Microcystis aeruginosa, and Ruppia maritima + mixture of Chlorella vulgaris and Microcystis aeruginosa (V:V=1:1). The growth of Chlorella vulgaris, Microcystis aeruginosa and mixed algae were rapidly and greatly inhibited with the presence of Ruppia maritima. The inhibition rates in the three treatments reached the maximums on the 6th day, which were 80.95%, 94.18% and 94.01%, respectively. The values of optical density, chlorophyll a, soluble sugar and maximum photochemical quantum yield for the three treatments were lower than those for the corresponding controls, and showed a significantly downward trend with time, indicating that the photosynthetic capacity of the treatments became weakening gradually. However, the values of malondialdehyde and superoxide dismutase of the treatments were higher than those of the corresponding controls for the first six days, indicating the possible occurrence of the membrane peroxidation of the algae.
张欣, 卢学强, 王兰, 韩晓昕, 毛海燕. 川蔓藻对两种常见浮游藻类的化感作用[J]. 中国环境科学, 2019, 39(4): 1589-1595.
ZHANG Xin, LU Xue-qiang, WANG Lan, HAN Xiao-xin, MAO Hai-yan. Allelopathic effect of Ruppia maritima on Chlorella vulgaris and Microcystis aeruginosa. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(4): 1589-1595.
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