Allelopathic Inhibition Effects of Myriophyllum spicatum on Growths of Bloom-Forming Cyanobacteria and Other Phytoplankton Species in Coexistence Experiments

• Published in: Journal of plant biology = Singmul Hakhoe chi Vol. 64; no. 6; pp. 501 - 510
• Main Authors: Jeong, Seonah, Yang, Dongwoo, Joo, Sungbae, Park, Sangkyu
• Format: Journal Article
• Language: English
• Published: Singapore Springer Singapore 01.12.2021; Springer Nature B.V; 한국식물학회
• Subjects: Algae; Algal blooms; Allelopathy; Anabaena; Anabaena circinalis; Aquatic plants; Biomass; Biomedical and Life Sciences; Chlorophyll; Coexistence; Cyanobacteria; Eutrophication; Experiments; Flowers & plants; Life Sciences; Light; macrophytes; Microcystis; Microcystis aeruginosa; Myriophyllum spicatum; Phytoplankton; Plankton; plant biology; Plant Breeding/Biotechnology; Plant Ecology; Plant Genetics and Genomics; Plant Sciences; Plant Systematics/Taxonomy/Biogeography; poisonous algae; Research Article; rivers; Scenedesmus obliquus; Selenastrum capricornutum; Toxicity; Water quality; 생물학; South Korea; Allelopathy; Phytoplankton; Harmful algal bloom; Cyanobacteria
• ISSN: 1226-9239; 1867-0725
• DOI: 10.1007/s12374-021-09322-5

Many studies have attempted to find measures for control of cyanobacterial harmful algal blooms (cyanoHABs) caused by Microcystis , Anabaena , and other bloom-forming plankton species. We have investigated allelopathic inhibition of the submerged macrophyte Myriophyllum spicatum on four phytoplankton species of two taxonomic groups: Chlorophyta Selenastrum capricornutum , Scenedesmus obliquus , and cyanobacteria Microcystis aeruginosa (different strains for toxic, non-toxic, the North Han River originated (NHR) and colonies) and Anabaena circinalis . Inhibitions of unicellular cyanobacteria M. aeruginosa were over 50% for three consecutive days from the 3rd to the 5th day of the coexistence. M. spicatum even inhibited M. aeruginosa at a high initial concentration (1.1 mg L −1 Chl- a ). Moreover, M. aeruginosa in a mixture of four phytoplankton species ( S. capricornutum , S. obliquus , M. aeruginosa and A. circinalis ) was selectively inhibited by M. spicatum . The inhibition of toxic, non-toxic, and NHR of Microcystis by M. spicatum were not significantly different. Colonial cyanobacteria strains were mostly not inhibited by M. spicatum .