Effects of ammonium and nitrate on encystment and growth of Scrippsiella trochoidea

doi:10.1007/s11434-014-0486-0

	Effects of ammonium and nitrate on encystment and growth of Scrippsiella trochoidea
	Wang, Zhifu 1,2; Yu, Zhiming1 ; Song, Xiuxian1 ; Cao, Xihua1 ; Zhang, Yue 1,2; Yu, ZM (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China.
	2014-11-01
发表期刊	CHINESE SCIENCE BULLETIN
卷号	59 期号:33 页码:4491-4497
文章类型	Article
摘要	To avoid unfavorable environmental conditions, Scrippsiella trochoidea is capable of forming a resting cyst in the process of growth. In the present study, we investigated the effects of nitrate and ammonium on the growth and encystment of S. trochoidea. We incubated S. trochoidea in modified f/2 media without nitrogen and silicate in flasks. The flasks were divided into two groups. Nitrate was added as a nitrogen source in the first group, and ammonium was added in the second group. The concentrations of the nitrogen compounds were 0, 10, 30, 60, and 90 mu mol/L. The results indicate that NO3 (-)-N favors cell growth, and the cultures with a higher concentration of NO3 (-)-N were ineffective at forming cysts. In contrast, NH4 (+)-N promoted cell growth and cyst formation. At similar concentrations as NO3 (-)-N, NH4 (+)-N had a toxic effect on cell growth and increased the cyst formation ratio. Thus, the NH4 (+)-N concentration is an important factor for controlling encystment. We believe that the impact of NH4 (+)-N in inducing cyst formation may be a useful feedback mechanism in ecological systems.
关键词	Nitrate Ammonium Encystment Scrippsiella Trochoidea
学科领域	Science & Technology - Other Topics
DOI	10.1007/s11434-014-0486-0
收录类别	SCI
语种	英语
WOS记录号	WOS:000344321500015
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/24009
专题	海洋生态与环境科学重点实验室
通讯作者	Yu, ZM (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Wang, Zhifu,Yu, Zhiming,Song, Xiuxian,et al. Effects of ammonium and nitrate on encystment and growth of Scrippsiella trochoidea[J]. CHINESE SCIENCE BULLETIN,2014,59(33):4491-4497.
APA	Wang, Zhifu,Yu, Zhiming,Song, Xiuxian,Cao, Xihua,Zhang, Yue,&Yu, ZM .(2014).Effects of ammonium and nitrate on encystment and growth of Scrippsiella trochoidea.CHINESE SCIENCE BULLETIN,59(33),4491-4497.
MLA	Wang, Zhifu,et al."Effects of ammonium and nitrate on encystment and growth of Scrippsiella trochoidea".CHINESE SCIENCE BULLETIN 59.33(2014):4491-4497.

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