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学科主题: Marine & Freshwater Biology
题名: Effect of iron on growth, biochemical composition and paralytic shellfish poisoning toxins production of Alexandrium tamarense
作者: He, HZ ; Chen, F ; Li, HS ; Xiang, WZ ; Li, YJ ; Jiang, Y
通讯作者: jnuhhz@hotmail.com ; yjiang@hkbu.edu.hk
关键词: Alexandrium tamarense ; Iron (Fe) ; Paralytic shellfish poisoning (PSP)
刊名: HARMFUL ALGAE
发表日期: 2010
卷: 9, 期:1, 页:98-104
收录类别: sci
部门归属: [He, Hongzhi; Li, Huashou] S China Agr Univ, Dept Ecol, Guangzhou 510642, Guangdong, Peoples R China; [Chen, Feng] Univ Hong Kong, Sch Biol Sci, Hong Kong, Hong Kong, Peoples R China; [Xiang, Wenzhou] Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Li, Yongjun] Zhongshan Qual Supervis & Test Ctr Agr Prod, Zhongshan 528403, Peoples R China; [Jiang, Yue] Hong Kong Baptist Univ, Dept Biol, Kwong Living Trust Food Safety &Anal Lab, Hong Kong, Hong Kong, Peoples R China; [Jiang, Yue] Hong Kong Baptist Univ, Sino Forest Appl Res Ctr Pearl River Delta Enviro, Hong Kong, Hong Kong, Peoples R China
项目归属: LMB
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.
原文出处: 查看原文
WOS记录号: WOS:000272602500012
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/3916
Appears in Collections:中科院海洋生物资源可持续利用重点实验室_期刊论文

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He, HZ; Chen, F; Li, HS; Xiang, WZ; Li, YJ; Jiang, Y.Effect of iron on growth, biochemical composition and paralytic shellfish poisoning toxins production of Alexandrium tamarense,HARMFUL ALGAE,2010,9(1):98-104
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