[1]徐宁,秦俊莲,孙树刚,等.东海原甲藻对尿素的吸收动力学与利用特性[J].深圳大学学报理工版,2012,29(No.5(377-470)):455-460.[doi:10.3724/SP.J.1249.2012.05455]
 XU Ning,QIN Jun-lian,SUN Shu-gang,et al.Uptake kinetics and utilization characteristics of Prorocentrum donghaiense for urea[J].Journal of Shenzhen University Science and Engineering,2012,29(No.5(377-470)):455-460.[doi:10.3724/SP.J.1249.2012.05455]
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东海原甲藻对尿素的吸收动力学与利用特性()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第29卷
期数:
2012年No.5(377-470)
页码:
455-460
栏目:
环境与能源
出版日期:
2012-09-21

文章信息/Info

Title:
Uptake kinetics and utilization characteristics of Prorocentrum donghaiense for urea
作者:
徐宁秦俊莲孙树刚段舜山
暨南大学水生生物研究中心,广州 510632
Author(s):
XU Ning QIN Jun-lian SUN Shu-gang and DUAN Shun-shan
Research Center of Hydrobiology, Jinan University, Guangzhou 510632, P.R.China
关键词:
海洋生态学有害赤潮东海原甲藻尿素吸收动力学中国东海
Keywords:
marine ecology harmful algal blooms (HABs) Prorocentrum donghaiense urea uptake kinetics East China Sea
分类号:
Q 178;Q 142
DOI:
10.3724/SP.J.1249.2012.05455
文献标志码:
A
摘要:
以中国东海大规模赤潮发生海区的东海原甲藻为实验材料,研究其对尿素的吸收动力学和利用特性.结果发现,东海原甲藻对尿素N的最大吸收速率(3.184 /h)高于氨态N(2.800 /h);东海原甲藻在以CO(NH2)2为唯一氮源时的最大比生长速率(0.685 /d)超过NO3-(0.663 /d);虽然东海原甲藻对NO3-和NH4+的亲和力略高于CO(NH2)2,但由于东海原甲藻具备快速吸收和利用尿素的能力,在无机氮含量较低且尿素丰富的近岸水体中具有竞争优势.指出尿素含量的上升可能是引发东海原甲藻赤潮的重要诱因.
Abstract:
A strain of Prorocentrum donghaiense was isolated from large-scale red tide waters of East China Sea. The growth rates and uptake kinetics of this harmful algal bloom species, with urea as the sole N source, were examined in laboratory cultures. The results show that, the maximum uptake rate of P. donghaiense for urea (3.184/h) is higher than that of ammonium (2.800/h), and the maximum growth rate of P. donghaiense for urea (0.685/d) is also higher than that of nitrate (0.663/d). It implies that P. donghaiense had higher affinities for nitrate and ammonium than urea; however, P. donghaiense shows higher uptake rate and growth rate with sufficient urea in the ambient environments. As P. donghaiense possesses an effective capability in uptake and utilization for urea, the rise of urea in the coastal waters from anthropogenic sources would be beneficial to the proliferation of the harmful species, contributing to increased occurrences of harmful algal blooms (HABs).

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备注/Memo

备注/Memo:
Received:2011-07-03;Revised:2011-12-27;Accepted:2012-02-01
Foundations:National Natural Science Foundation of China (40776078, U1133003) 
Corresponding author:Associate professor XU Ning. E-mail: txuning@163.com
Citation:XU Ning, QIN Jun-lian, SUN Shu-gang, et al. Uptake kinetics and utilization characteristics of Prorocentrum donghaiense for urea[J]. Journal of Shenzhen University Science and Engineering, 2012, 29(5): 455-460.(in Chinese)
基金项目:国家自然科学基金资助项目(40776078,U1133003)
作者简介:徐宁(1971-), 女(汉族), 湖北省孝感市人, 暨南大学副教授、博士. E-mail: txuning@163.com
引文:徐宁,秦俊莲,孙树刚,等. 东海原甲藻对尿素的吸收动力学与利用特性[J]. 深圳大学学报理工版,2012,29(5):455-460.
更新日期/Last Update: 2012-09-26