Algicidal Effects of a High-Efficiency Algicidal Bacterium Shewanella Y1 on the Toxic Bloom-Causing Dinoflagellate Alexandrium pacificum

doi:10.3390/md20040239

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	Algicidal Effects of a High-Efficiency Algicidal Bacterium Shewanella Y1 on the Toxic Bloom-Causing Dinoflagellate Alexandrium pacificum
	Chen, Xi 1; Wang, Dengyu 2; Wang, Yanqun 2; Sun, Pengfei 3; Ma, Shuanghui 2; Chen, Tiantian 2,4,5
刊名	MARINE DRUGS
	2022-04-01
卷号	20 期号:4 页码:18
关键词	algicidal bacteria Alexandrium pacificum algicidal effect harmful algal blooms Shewanella
DOI	10.3390/md20040239
通讯作者	Chen, Tiantian(chentiantian@qdio.ac.cn)
英文摘要	Alexandriumpacificum is a typical toxic bloom-forming dinoflagellate, causing serious damage to aquatic ecosystems and human health. Many bacteria have been isolated, having algicidal effects on harmful algal species, while few algicidal bacteria have been found to be able to lyse A. pacificum. Herein, an algicidal bacterium, Shewanella Y1, with algicidal activity to the toxic dinoflagellate A. pacificum, was isolated from Jiaozhou Bay, China, and the physiological responses to oxidative stress in A. pacificum were further investigated to elucidate the mechanism involved in Shewanella Y1. Y1 exhibited a significant algicidal effect (86.64 +/- 5.04% at 24 h) and algicidal activity in an indirect manner. The significant declines of the maximal photosynthetic efficiency (F-v/F-m), initial slope of the light limited region (alpha), and maximum relative photosynthetic electron transfer rate (rETRmax) indicated that the Y1 filtrate inhibited photosynthetic activities of A. pacificum. Impaired photosynthesis induced the overproduction of reactive oxygen species (ROS) and caused strong oxidative damage in A. pacificum, ultimately inducing cell death. These findings provide a better understanding of the biological basis of complex algicidal bacterium-harmful algae interactions, providing a potential source of bacterial agent to control harmful algal blooms.
资助项目	Key Laboratory of Tropical Marine Ecosystem and Bioresource, MNR[2021QN007] ; National Key Research and Development Program of China[2018YFC1407601]
WOS研究方向	Pharmacology & Pharmacy
语种	英语
出版者	MDPI
WOS记录号	WOS:000785246500001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/178735]
专题	海洋研究所_海洋生态与环境科学重点实验室
通讯作者	Chen, Tiantian
作者单位	1.Ocean Univ China, Coll Marine Life Sci, Qingdao 266003, Peoples R China 2.Ocean Univ China, Coll Environm Sci & Engn, Qingdao 266100, Peoples R China 3.Minist Nat Resources, Inst Oceanog 4, Beihai 536000, Peoples R China 4.Ocean Univ China, Key Lab Marine Ecol Environm, Minist Educ, Qingdao 266100, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Chen, Xi,Wang, Dengyu,Wang, Yanqun,et al. Algicidal Effects of a High-Efficiency Algicidal Bacterium Shewanella Y1 on the Toxic Bloom-Causing Dinoflagellate Alexandrium pacificum[J]. MARINE DRUGS,2022,20(4):18.
APA	Chen, Xi,Wang, Dengyu,Wang, Yanqun,Sun, Pengfei,Ma, Shuanghui,&Chen, Tiantian.(2022).Algicidal Effects of a High-Efficiency Algicidal Bacterium Shewanella Y1 on the Toxic Bloom-Causing Dinoflagellate Alexandrium pacificum.MARINE DRUGS,20(4),18.
MLA	Chen, Xi,et al."Algicidal Effects of a High-Efficiency Algicidal Bacterium Shewanella Y1 on the Toxic Bloom-Causing Dinoflagellate Alexandrium pacificum".MARINE DRUGS 20.4(2022):18.