The mechanism of a new type of modified clay controllingPhaeocystis globosagrowth

doi:10.1007/s00343-020-0054-1

	The mechanism of a new type of modified clay controllingPhaeocystis globosagrowth
	Qiu, Lixia1,2,3,4 ; Yu, Zhiming1,2,3,4 ; Cao, Xihua1,2,4 ; Ji, Hena1,2,3,4 ; Song, Xiuxian1,2,3,4
	2020-07-08
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
页码	13
摘要	Phaeocystis globosais a harmful algal bloom (HAB) species worldwide. Using modified clay (MC) to control HABs and to mitigate their adverse effects is currently a commonly used method in China. In this paper, the effects of oxidized composite modified clay (OXI-MC) onP. globosawere studied from different perspectives. The results show that the OXI-MC could effectively removeP. globosaand inhibit both the growth of residual algal cells and the formation of new colonies. TheP. globosaalgal biomass removal efficiencies after 3 h reached 90% at a dose of 0.1 g/L, and the number of colonies with different particle sizes was greatly reduced. Compared with those of the control, the superoxide dismutase (SOD) activity, catalase (CAT) activity, and malondialdehyde (MDA) content of the residual algae significantly increased, indicating that OXI-MC caused oxidative stress in the algal cells. In addition, we evaluated the effects of OXI-MC on the photosynthesis of residual microalgae and found that the maximal photochemical efficiency of photosystem II (PSII) under dark adaptation (F-v/F-m) and actual photochemical efficiency of PSII (phi PSII) decreased, severely damaging the photosynthesis efficiency, implying that OXI-MC effected the photosynthesis system ofP. globosa. The results of this study clarify that OXI-MC could remove the most of algal cells and break up the colonies ofP. globosaby collision, flocculation, and releasing active substances, as well as inhibit effectively the growth and colony formation of residualP. globosaby causing oxidative stress, reducing photosynthesis activity, accelerating the degradation of polysaccharides, and inhibiting the formation of colonies.
关键词	Phaeocystis globosa modified clay colony disruption oxidative stress photosynthesis
DOI	10.1007/s00343-020-0054-1
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41576119]; Taishan Scholars Climbing Program of Shandong Province of 2019; Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2018SDKJ0504-2]; National Key Research and Development Program of China[2017YFC1404300]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:000546525000003
出版者	SCIENCE PRESS
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.qdio.ac.cn/handle/337002/167868
专题	海洋生态与环境科学重点实验室
通讯作者	Yu, Zhiming
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Qiu, Lixia,Yu, Zhiming,Cao, Xihua,et al. The mechanism of a new type of modified clay controllingPhaeocystis globosagrowth[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2020:13.
APA	Qiu, Lixia,Yu, Zhiming,Cao, Xihua,Ji, Hena,&Song, Xiuxian.(2020).The mechanism of a new type of modified clay controllingPhaeocystis globosagrowth.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,13.
MLA	Qiu, Lixia,et al."The mechanism of a new type of modified clay controllingPhaeocystis globosagrowth".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2020):13.

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