Journal article

Publication year: 2021

Journal: International Journal of Systematic and Evolutionary Microbiology

Volume number: 71

Issue number: 11

ISSN: 1466-5026

eISSN: 1466-5034

DOI Link: https://doi.org/10.1099/ijsem.0.005124

Publisher: Microbiology Society

Abstract: 
Harmful algal blooms caused by Cochlodinium polykrikoides result in enormous economic damage to the aquaculture industry. Biological control methods have attracted wide attention due to their environmental-friendliness. In this study, a novel algicidal bacterium, designated strain M26A2M(T), was determined for its taxonomic position and was evaluated for its potential to mitigate C. polykrikoides blooms. Strain M26A2M(T) exhibited the highest 165 rRNA gene sequence similarity to the type strains of Planktotalea lamellibrachiae (97.3%). Halocynthiibacter namhaensis (97.2%). Pseudohalocynthiibacter aestuariivivens (96.8%) and Halocynthiibacter arcticus (96.4%) in the family Rhodobacteraceae. The predominant fatty acids were C-10:(0) 3-OH and summed feature 8 (comprising C-18:1 omega 7c and/or C-18:1 omega 6c). The major polar lipids were phosphatidylcholine, phosphatidylglycerol, phosphatidylethanolamine, one unidentified aminolipid and three unidentified lipids. Q-10 was the respiratory quinone. Strain M26A2M(T) exerted significant algicidal activity against C. polykrikoides cells by destroying the membrane integrity and the photosynthetic system. Our findings suggest that strain M26A2M(T) shows a high potential to control outbreaks of C. polykrikoides. Based on the polyphasic characterization, strain M26A2M(T) is considered to represent a novel species within a novel genus of the family Rhodobacteraceae, for which the name Cochlodiniinecator piscidefendens gen. nov., sp. nov. is proposed. The type strain is M26A2M(T) (=KCTC 82083(T)=JCM 34119(T)).

Harvard Citation style: Ve Van Le, Ko, S., Lee, S., Jin, L., Blom, J., Ahn, C., et al. (2021) Cochlodiniinecator piscidefendens gen. nov., sp. nov., an algicidal bacterium against the ichthyotoxic dinoflagellate Cochlodinium polykrikoides, International Journal of Systematic and Evolutionary Microbiology, 71(11), Article 005124. https://doi.org/10.1099/ijsem.0.005124

APA Citation style: Ve Van Le, Ko, S., Lee, S., Jin, L., Blom, J., Ahn, C., & Oh, H. (2021). Cochlodiniinecator piscidefendens gen. nov., sp. nov., an algicidal bacterium against the ichthyotoxic dinoflagellate Cochlodinium polykrikoides. International Journal of Systematic and Evolutionary Microbiology. 71(11), Article 005124. https://doi.org/10.1099/ijsem.0.005124