Authors: Yi Li Lei Liu Yanting Xu Chengwei Guan Xueqian Lei Wei Zheng Hailei Wang Tianling Zheng
Publish Date: 2016/07/15
Volume: 73, Issue: 4, Pages: 550-560
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 cellfree 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 pHstability and its molecular weight was less than 1000 Da and was a nonproteinaceous material or nonpolysaccharide midpolar 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 bioagent for controlling HABs caused by A tamarenseThis work was supported by the NSFC 41576109 31500095 Joint project of National Natural Science Foundation of China and Shandong province Marine ecology and environmental sciences U1406403 the Doctoral Scientific Research Startup Foundation of Henan Normal University 5101049170160 and MEL Visiting Fellowship MELRS1512 We also thank Prof I J Hodgkiss of The University of Hong Kong for comments and help with the EnglishWe confirm that the manuscript has been read and approved by all named authors and that there are no other persons who satisfied the criteria for authorship but are not listed We further confirm that the order of authors listed in the manuscript has been approved by all of us There are no conflicts of interest associated with this publication
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