Physiological response dynamics of the brown tide organism Aureococcus anophagefferens treated with modified clay

doi:10.1016/j.hal.2019.04.009

	Physiological response dynamics of the brown tide organism Aureococcus anophagefferens treated with modified clay
	Zhu, Jianan 1,2,3,4; Yu, Zhiming1,2,3,4 ; He, Liyan 1,2,4; Cao, Xihua1,2,4 ; Ji, Hena 1,2,3,4; Song, Xiuxian1,2,3,4
	2019-06-01
发表期刊	HARMFUL ALGAE
ISSN	1568-9883
卷号	86 页码:1-9
通讯作者	Yu, Zhiming(zyu@qdio.ac.cn)
摘要	On the basis of experiences in mitigating harmful algal blooms (HABs) with modified clay (MC), a bloom does not continue after the dispersal of the MC, even though the density of the residual cells in the water remains as high as 20-30% of the initial cell density. This interesting phenomenon indicates that in addition to flocculation, MC has additional mechanisms of HAB control. Here, Aureococcus anophagefferens was selected as a model organism to study the physiological response dynamics of residual cells treated with MC, and RT-qPCR was used to measure the differential expression of 40 genes involved in anti-oxidation, photosynthesis, phospholipid synthesis, programmed cell death and cell proliferation at five time points. The results showed that every functional gene category exhibited a "V" shaped pattern with a turning point. It was reflected that there were two processes for MC inhibiting the growth of residual cells. One is the oxidative stress process (OSP) caused by ineffective collision with MC, whose effect weakened gradually; another is the programmed cell death process (PCDP) caused by the lysis of damaged residual cells, whose effect enhanced two days after MC treatment. In addition, the scanning electron micrographs verified that some of the residual cells were deformed or even lysed. Combined with the effects of OSP and PCDP in dynamics, the growth of residual cells was inhibited and was followed by gradual bloom disappearance. This study further elucidates the mechanism of MC controlling HABs at the molecular level and enable a more comprehensive understanding of HAB mitigation using MC.
关键词	Modified clay Harmful algal blooms Mitigation mechanism Residual cells Aureococcus anophagefferens
DOI	10.1016/j.hal.2019.04.009
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFC1404306] ; Aoshan Talent Cultivation Program[2017ASTCP-OS16] ; Methods for Improving Colonial Phaeocystis Precipitation and Their Flocculation Morphological Mechanisms[41576119] ; NLMST[2016ASKJ02-3] ; National Key Research and Development Program of China[2017YFC1404306] ; Aoshan Talent Cultivation Program[2017ASTCP-OS16] ; Methods for Improving Colonial Phaeocystis Precipitation and Their Flocculation Morphological Mechanisms[41576119] ; NLMST[2016ASKJ02-3]
WOS研究方向	Marine & Freshwater Biology
WOS类目	Marine & Freshwater Biology
WOS记录号	WOS:000484874200001
出版者	ELSEVIER
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
条目标识符	http://ir.qdio.ac.cn/handle/337002/162814
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, CAS Key Lab Marine Scol & Environm Sci, Qingdao 266071, Shandong, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Ecol & Environm Sci, Qingdao 266237, Shandong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, 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	Zhu, Jianan,Yu, Zhiming,He, Liyan,et al. Physiological response dynamics of the brown tide organism Aureococcus anophagefferens treated with modified clay[J]. HARMFUL ALGAE,2019,86:1-9.
APA	Zhu, Jianan,Yu, Zhiming,He, Liyan,Cao, Xihua,Ji, Hena,&Song, Xiuxian.(2019).Physiological response dynamics of the brown tide organism Aureococcus anophagefferens treated with modified clay.HARMFUL ALGAE,86,1-9.
MLA	Zhu, Jianan,et al."Physiological response dynamics of the brown tide organism Aureococcus anophagefferens treated with modified clay".HARMFUL ALGAE 86(2019):1-9.

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