title: First Evidence of Altererythrobacter sp. LY02 with Indirect Algicidal Activity on the Toxic Dinoflagellate, Alexandrium tamarense.
abstract: Alexandrium tamarense is a toxic harmful algal blooms (HABs) causing species, which poses great threat to human health and marine economy. In this study, we isolated an algicidal bacterium Altererythrobacter sp. LY02 towards to A. tamarense and later investigated the algicidal activity, algicidal mode, characteristics of algicidal active substance and algicidal procedure. The results indicated that the cell-free filtrate of strain LY02 showed high algicidal effect on algal growth, however, bacterial cells almost lost algicidal activity. The algicidal active substance was temperature- and pH-stability, and its molecular weight was less than 1000 Da, and was a non-proteinaceous material or non-polysaccharide, mid-polar substance. Under the algicidal effect of active substance, the morphology and structure of A. tamarense cells were seriously damaged as well as organelles. Our study confirmed that the algicidal active substance could be used as an excellent bio-agent for controlling HABs caused by A. tamarense.
authors.affiliation: College of Life Sciences, Henan Normal University, Xinxiang, 453007, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Li
authors.affiliation: College of Life Sciences, Henan Normal University, Xinxiang, 453007, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Liu
authors.affiliation: College of Life Sciences, Henan Normal University, Xinxiang, 453007, China.
authors.forename: Yanting
authors.initials: Y
authors.lastname: Xu
authors.affiliation: State Key Laboratory of Marine Environmental Science, School of Life Sciences, Xiamen University, Xiamen, 361005, China.|Tobacco Science Research Institute of Jiangxi Province, Nanchang, 330000, China.
authors.forename: Chengwei
authors.initials: C
authors.lastname: Guan
authors.affiliation: State Key Laboratory of Marine Environmental Science, School of Life Sciences, Xiamen University, Xiamen, 361005, China.
authors.forename: Xueqian
authors.initials: X
authors.lastname: Lei
authors.affiliation: State Key Laboratory of Marine Environmental Science, School of Life Sciences, Xiamen University, Xiamen, 361005, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zheng
authors.affiliation: College of Life Sciences, Henan Normal University, Xinxiang, 453007, China. whl@htu.cn.
authors.forename: Hailei
authors.initials: H
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Marine Environmental Science, School of Life Sciences, Xiamen University, Xiamen, 361005, China. wshwzh@xmu.edu.cn.|Xiamen University, Room 316, Huang Chaoyang Building, Xiang' an Campus, Xiamen, Fujian, China. wshwzh@xmu.edu.cn.
authors.forename: Tianling
authors.initials: T
authors.lastname: Zheng
mesh_terms: D020561:Alphaproteobacteria / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism; D000981:Antiprotozoal Agents / Q000737:chemistry / Q000378:metabolism / Q000633:toxicity*; D004141:Dinoflagellida / Q000187:drug effects* / Q000254:growth & development; D004355:Drug Stability; D057097:Harmful Algal Bloom / Q000187:drug effects*; D006863:Hydrogen-Ion Concentration
chemical_list: D000981:Antiprotozoal Agents