Effects of cultivated water of Myriophyllum spicatum on Microcystis aeruginosa

被引：0
|
作者：
Gao Y. [1 ]
Wu J. [1 ]
Yang H. [1 ]
Zhang F. [1 ]
Liu C. [1 ]
Luo K. [1 ]
机构：
[1] College of Fisheries, Henan Normal University, Xinxiang
来源：
Gao, Yunni (gaoyun@htu.cn) | 1600年 / Editorial Board of Water Resources Protection卷 / 37期
关键词：
Allelochemical; Cultivated water; Microcystis aeruginosa; Myriophyllum spicatum; Nutrients;
D O I：
10.3880/j.issn.1004-6933.2021.06.024
中图分类号：
学科分类号：
摘要：
To explore the effects of nutrient levels on allelopathic inhibition of submerged macrophytes on cyanobacteria, the cultivated water of submerged macrophyte Myriophyllum spicatum, which was self-propagated under outdoor conditions, was collected to study the growth and physiological responses of toxigenic and non-toxigenic strains of harmful cyanobacteria Microcystis aeruginosa under two nutrient levels. The results showed that the cultivated water significantly inhibits the growth and physiological process of toxigenic and non-toxigenic M. aeruginosa(P<0. 05), while the inhibitory effect is stronger at lower nutrient levels(P<0. 05). With the cultivated water of M. spicatum exposed in the air with nutrient enrichment for nine days, the growth inhibition ratios of the toxigenic and non-toxigenic M. aeruginosa were 23. 5% and 20. 9% respectively; the inhibition ratios on actual photochemical efficiency of photosystem Ⅱ of the toxigenic and non-toxigenic strains were 7. 4% and 17. 6% respectively; the malondialdehyde(MDA)contents of the toxigenic and non-toxigenic strains were increased by 5. 6% and 9. 1% respectively. With original cultivated water of M. spicatum, the growth inhibition ratios of the toxigenic and non-toxigenic M. aeruginosa were 60. 7% and 49. 3% respectively; the inhibition ratios on actual photochemical efficiency of photosystem Ⅱ of the toxigenic and non-toxigenic strains were 15. 4% and 23. 4% respectively; MDA contents of the toxigenic and non-toxigenic strains were increased by 11. 1% and 18. 2% respectively. © 2021, Editorial Board of Water Resources Protection. All rights reserved.
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页码：162 / 167
页数：5
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