The extract of aquatic macrophyte Carex cinerascens induced colony formation in bloom-forming cyanobacterium Microcystis aeruginosa

2020 ◽  
Vol 27 (34) ◽  
pp. 42276-42282 ◽  
Author(s):  
Lin Li ◽  
Xiao-ling Jing ◽  
Ling Wang ◽  
Zhi-gao Zeng ◽  
Wen-hong Chen ◽  
...  
Keyword(s):  
Microcystis Aeruginosa ◽  
Colony Formation ◽  
Aquatic Macrophyte

Effects of toxic cyanobacterium Microcystis aeruginosa on the morphology of green alga Chlorella vulgaris

2019 ◽  
Vol 55 ◽  
pp. 7 ◽  
Author(s):  
Jing Dong ◽  
Chenlu Li ◽  
Mengyang Chang ◽  
Dujuan Dai ◽  
Shiwen Liu ◽  
...  
Keyword(s):  
Microcystis Aeruginosa ◽  
Green Alga ◽  
Chlorella Vulgaris ◽  
Colony Formation ◽  
Abiotic Factors ◽  
Defensive Strategies ◽  
Green Alga Chlorella ◽  
Continuous Induction ◽  
Active Substances ◽  
Morphology Changes

In eutrophic freshwater lakes, cyanobacteria and green algae are in succession due to abiotic factors. Allelochemical interaction also exists. In this study, we indicated that filtrates of Microcystis aeruginosa can influence the growth rate and photosynthetic pigments of the target alga named Chlorella vulgaris. We also determined the morphological appearance and colony formation of green alga C. vulgaris that were induced by chemicals associated with a competitor cyanobacterium named M. aeruginosa. However, microcystins (MCs) were not the active substances in this study. The morphology changes and growth of C. vulgaris affected by M. aeruginosa filtrates were dependent on the initial cultivation density of the target algae and the cultivation phase of M. aeruginosa. We also assumed that the morphology changes were defensive strategies utilised by C. vulgaris to resist M. aeruginosa. The temporary stress of M. aeruginosa was favourable to the growth of C. vulgaris. By contrast, the continuous induction of colony formation by M. aeruginosa in the field inhibited the growth of C. vulgaris. The present results provided new insights into the interaction between algae and theoretical basis for algae succession in the field.

Effects of nitrogen forms and supply modes on colony formation in Microcystis aeruginosa

2017 ◽  
Vol 30 (2) ◽  
pp. 831-837 ◽  
Author(s):  
Zhi Qu ◽  
Miaomiao Zhao ◽  
Pengfei Duan ◽  
Ming Li
Keyword(s):  
Microcystis Aeruginosa ◽  
Colony Formation ◽  
Nitrogen Forms
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