IOCAS-IR  > 海洋生态与环境科学重点实验室
Physiological response dynamics of the brown tide organism Aureococcus anophagefferens treated with modified clay
Zhu, Jianan1,2,3,4; Yu, Zhiming1,2,3,4; He, Liyan1,2,4; Cao, Xihua1,2,4; Ji, Hena1,2,3,4; Song, Xiuxian1,2,3,4
2019-06-01
Source PublicationHARMFUL ALGAE
ISSN1568-9883
Volume86Pages:1-9
Corresponding AuthorYu, Zhiming(zyu@qdio.ac.cn)
AbstractOn 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.
KeywordModified clay Harmful algal blooms Mitigation mechanism Residual cells Aureococcus anophagefferens
DOI10.1016/j.hal.2019.04.009
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMarine & Freshwater Biology
WOS SubjectMarine & Freshwater Biology
WOS IDWOS:000484874200001
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/162814
Collection海洋生态与环境科学重点实验室
Corresponding AuthorYu, Zhiming
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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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