Effect of iron on growth, biochemical composition and paralytic shellfish poisoning toxins production of Alexandrium tamarense

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	Effect of iron on growth, biochemical composition and paralytic shellfish poisoning toxins production of Alexandrium tamarense
	He, HZ; Chen, F; Li, HS; Xiang, WZ; Li, YJ; Jiang, Y; jnuhhz@hotmail.com; yjiang@hkbu.edu.hk
刊名	HARMFUL ALGAE
	2010
卷号	9 期号:1 页码:98-104
关键词	Alexandrium Tamarense Iron (Fe) Paralytic Shellfish Poisoning (Psp)
ISSN号	1568-9883
英文摘要	Effects of iron (Fe) on growth, biochemical composition and paralytic shellfish poisoning (PSP) toxins production of Alexandrium tamarense were studied. Under Fe-limited conditions (1 nmol L-1 Fe), the alga exhibited a low specific growth rate (0.076 +/- 0.017 d(-1), n = 3) that was nearly a half of that under Fe-replete conditions (1 mu mol L-1 Fe, 0.137 +/- 0.00752 d(-1), n = 4), and the cell density an day 21 (8210 cells mL(-1)) was also less than a half of that under Fe-replete conditions (2 x 10(4) cells mL(-1)). At the same time, total pigment, chlorophyll a (Chla), protein, carbohydrate contents per cell and Chla/carotenoid ratio decreased. In contrast, the PSP toxins content and the PSP toxicity per cell of the alga increased remarkably. Under Fe-limited conditions, total PSP toxins content and relative toxicity of alga were 2.55- and 2.54-fold of those under Fe-replete conditions, respectively. In addition, the profiles of PSP toxins also changed notably. The cellular content of gonyautoxin 1 + 4 (GTX1 + 4) increased for 5.6-fold along with the decrease of saxitoxin (STX) and gonyautoxin 2 + 3 (GTX2 + 3) contents contrasting to that under Fe-replete conditions. It suggested that the availability of Fe might effectively control the growth and toxic production of the alga and thereby influence the toxic effect of these harmful bloom events. (C) 2009 Elsevier B.V. All rights reserved.
学科主题	Marine & Freshwater Biology
URL标识	查看原文
资助项目	LMB
WOS记录号	WOS:000272602500012
公开日期	2011-07-02
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/3916]
专题	南海海洋研究所_中科院海洋生物资源可持续利用重点实验室
通讯作者	jnuhhz@hotmail.com; yjiang@hkbu.edu.hk
推荐引用方式 GB/T 7714	He, HZ,Chen, F,Li, HS,et al. Effect of iron on growth, biochemical composition and paralytic shellfish poisoning toxins production of Alexandrium tamarense[J]. HARMFUL ALGAE,2010,9(1):98-104.
APA	He, HZ.,Chen, F.,Li, HS.,Xiang, WZ.,Li, YJ.,...&yjiang@hkbu.edu.hk.(2010).Effect of iron on growth, biochemical composition and paralytic shellfish poisoning toxins production of Alexandrium tamarense.HARMFUL ALGAE,9(1),98-104.
MLA	He, HZ,et al."Effect of iron on growth, biochemical composition and paralytic shellfish poisoning toxins production of Alexandrium tamarense".HARMFUL ALGAE 9.1(2010):98-104.