中国科学院水生生物研究所机构知识库
Advanced  
IHB OpenIR  > 藻类生物学及应用研究中心  > 期刊论文
题名: Growth and Nitrogen Uptake Characteristics Reveal Outbreak Mechanism of the Opportunistic Macroalga Gracilaria tenuistipitata
作者: Wang, Chao1, 2; Lei, Anping1; Zhou, Kai3; Hu, Zhengyu2; Hao, Wenlong1; Yang, Junda1
关键词: NITRATE UPTAKE ; INORGANIC NITROGEN ; COASTAL WATERS ; ULVA-LACTUCA ; INTERTIDAL SEAWEEDS ; NUTRIENT CONTROL ; AMMONIUM UPTAKE ; UPTAKE KINETICS ; AGAR YIELD ; J. AGARDH
刊名: PLOS ONE
发表日期: 2014-10-09
DOI: 10.1371/journal.pone.0108980
卷: 9, 期:10
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
英文摘要: Macroalgae has bloomed in the brackish lake of Shenzhen Bay, China continuously from 2010 to 2014. Gracilaria tenuistipitata was identified as the causative macroalgal species. The aim of this study was to explore the outbreak mechanism of G. tenuistipitata, by studying the effects of salinity and nitrogen sources on growth, and the different nitrogen sources uptake characteristic. Our experimental design was based on environmental conditions observed in the bloom areas, and these main factors were simulated in the laboratory. Results showed that salinity 12 to 20 % was suitable for G. tenuistipitata growth. When the nitrogen sources' (NH4+, NO3+) concentrations reached 40 mu M or above, the growth rate of G. tenuistipitata was significantly higher. Algal biomass was higher (approximately 1.4 times) when cultured with NH4+ than that with NO3+ addition. Coincidentally, macroalgal bloom formed during times of moderate salinity (similar to 12 %) and high nitrogen conditions. The NH4+ and NO3+ uptake characteristic was studied to understand the potential mechanism of G. tenuistipitata bloom. NH4+ uptake was best described by a linear, rate-unsaturated response, with the slope decreasing with time intervals. In contrast, NO3+ uptake followed a rate-saturating mechanism best described by the Michaelis-Menten model, with kinetic parameters V-max = 37.2 mu M g(-1) DM h(-1) and K-s = 61.5 mu M. Further, based on the isotope N-15 tracer method, we found that N-15 from NH4+ accumulated faster and reached an atom% twice than that of N-15 from NO3+, suggesting when both NH4+ and NO3+ were available, NH4+ was assimilated more rapidly. The results of the present study indicate that in the estuarine environment, the combination of moderate salinity with high ammonium may stimulate bloom formation.
关键词[WOS]: NITRATE UPTAKE ; INORGANIC NITROGEN ; COASTAL WATERS ; ULVA-LACTUCA ; INTERTIDAL SEAWEEDS ; NUTRIENT CONTROL ; AMMONIUM UPTAKE ; UPTAKE KINETICS ; AGAR YIELD ; J. AGARDH
语种: 英语
WOS记录号: WOS:000343941200027
ISSN号: 1932-6203
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20394
Appears in Collections:藻类生物学及应用研究中心_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Growth and Nitrogen Uptake Characteristics Reveal Outbreak Mechanism of the Opportunistic Macroalga Gracilaria tenuistipitata.pdf(1656KB)----开放获取View Download

作者单位: 1.Shenzhen Univ, Coll Life Sci, Shenzhen, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China
3.Shenzhen Marine Environm & Resources Monitoring C, Shenzhen, Peoples R China

Recommended Citation:
Wang, Chao; Lei, Anping; Zhou, Kai; Hu, Zhengyu; Hao, Wenlong; Yang, Junda.Growth and Nitrogen Uptake Characteristics Reveal Outbreak Mechanism of the Opportunistic Macroalga Gracilaria tenuistipitata,PLOS ONE,2014,():
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Wang, Chao]'s Articles
[Lei, Anping]'s Articles
[Zhou, Kai]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Wang, Chao]‘s Articles
[Lei, Anping]‘s Articles
[Zhou, Kai]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: Growth and Nitrogen Uptake Characteristics Reveal Outbreak Mechanism of the Opportunistic Macroalga Gracilaria tenuistipitata.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院水生生物研究所 - Feedback
Powered by CSpace