Effect of CO2 on growth and toxicity of Alexandrium tamarense from the East China Sea, a major producer of paralytic shellfish toxins

doi:10.1016/j.hal.2017.08.008

	Effect of CO2 on growth and toxicity of Alexandrium tamarense from the East China Sea, a major producer of paralytic shellfish toxins
	Pang, Min 1,5; Xu, Jintao 2; Qu, Pei 1; Mao, Xuewei 3; Wu, Zhenxing 4; Xin, Ming 1,5; Sun, Ping 1; Wang, Zongxing 1; Zhang, Xuelei 1,5; Chen, Hongju 3,5,6
刊名	HARMFUL ALGAE
	2017-09
卷号	68 页码:240-247
关键词	pCO(2) Ocean acidification Harmful algal blooms Paralytic shellfish toxins Alexandrium tamarense
ISSN号	1568-9883
DOI	10.1016/j.hal.2017.08.008
英文摘要	In recent decades, the frequency and intensity of harmful algal blooms (HABs), as well as a profusion of toxic phytoplankton species, have significantly increased in coastal regions of China. Researchers attribute this to environmental changes such as rising atmospheric CO2 levels. Such addition of carbon into the ocean ecosystem can lead to increased growth, enhanced metabolism, and altered toxicity of toxic phytoplankton communities resulting in serious human health concerns. In this study, the effects of elevated partial pressure of CO2 (pCO(2)) on the growth and toxicity of a strain of Alexandrium tamarense (ATDH) widespread in the East and South China Seas were investigated. Results of these studies showed a higher specific growth rate (0.31 +/- 0.05 day(-1)) when exposed to 1000 mu atm CO2, (experimental), with a corresponding density of (2.02 +/- 0.19) x 10(7) cells L-1, that was significantly larger than cells under 395 mu atm CO2(control). These data also revealed that elevated pCO(2) primarily affected the photosynthetic properties of cells in the exponential growth phase. Interestingly, measurement of the total toxin content per cell was reduced by half under elevated CO2 conditions. The following individual toxins were measured in this study: Cl, C2, GTX1, GTX2, GTX3, GTX4, GTX5, STX, dcGTX2, dcGTX3, and dcSTX. Cells grown in 1000 mu atm CO2 showed an overall decrease in the cellular concentrations of Cl, C2, GTX2, GTX3, GTX5, STX, dcGTX2, dcGTX3, and dcSTX, but an increase in GTX1 and GTX4. Total cellular toxicity per cell was measured revealing an increase of nearly 60% toxicity in the presence of elevated CO2 compared to controls. This unusual result was attributed to a significant increase in the cellular concentrations of the more toxic derivatives, GTX1 and GTX4.Taken together; these findings indicate that the A. tamarense strain ATDH isolated from the East China Sea significantly increased in growth and cellular toxicity under elevated pCO(2) levels. These data may provide vital information regarding future HABs and the corresponding harmful effects as a result of increasing atmospheric CO2. (C) 2017 Elsevier B.V. All rights reserved.
资助项目	National Key Research and Development Program of China[2016YFC1402106] ; National Key Research and Development Program of China[2016YFC1402104]
WOS关键词	HARMFUL ALGAL BLOOMS ; DINOFLAGELLATE KARENIA BREVIS ; INORGANIC CARBON ACQUISITION ; CLIMATE-CHANGE ; INCREASED TEMPERATURE ; OCEAN ACIDIFICATION ; ELEMENTAL RATIOS ; INCREASED PCO(2) ; CHANGING PCO(2) ; N-2 FIXATION
WOS研究方向	Marine & Freshwater Biology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000412958300019
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25363]
专题	自然资源部第一海洋研究所
通讯作者	Chen, Hongju
作者单位	1.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Ecol & Environm Sci & Engn, Qingdao 266061, Peoples R China 2.SOA, Qinhuangdao Marine Environm Monitoring Cent Stn, Qinhuangdao 066000, Peoples R China 3.Ocean Univ China, Key Lab Marine Environm & Ecol, Minist Educ, Qingdao 266100, Peoples R China 4.Shandong Entry Exit Inspect & Quarantine Bur, Qingdao 266002, Peoples R China 5.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266200, Peoples R China 6.238 Songling Rd, Qingdao, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Pang, Min,Xu, Jintao,Qu, Pei,et al. Effect of CO2 on growth and toxicity of Alexandrium tamarense from the East China Sea, a major producer of paralytic shellfish toxins[J]. HARMFUL ALGAE,2017,68:240-247.
APA	Pang, Min.,Xu, Jintao.,Qu, Pei.,Mao, Xuewei.,Wu, Zhenxing.,...&Chen, Hongju.(2017).Effect of CO2 on growth and toxicity of Alexandrium tamarense from the East China Sea, a major producer of paralytic shellfish toxins.HARMFUL ALGAE,68,240-247.
MLA	Pang, Min,et al."Effect of CO2 on growth and toxicity of Alexandrium tamarense from the East China Sea, a major producer of paralytic shellfish toxins".HARMFUL ALGAE 68(2017):240-247.