Effects of ammonium and nitrate on encystment and growth of Scrippsiella trochoidea
文献类型：CNKI期刊论文
| 作者 | Zhifu Wang; Zhiming Yu ; Xiuxian Song; Xihua Cao; Yue Zhang
|
| 发表日期 | 2014-11-25 |
| 出处 | Chinese Science Bulletin
 |
| 关键词 | Nitrate á Ammonium á Encystment á Scrippsiella trochoidea |
| 英文摘要 | 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 lmol/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. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | supported by the Fund for Creative Research Groups by National Natural Science Foundation of China(41121064) ; ‘‘Strategic Priority Research Program’’of the Chinese Academy of Sciences(XDA11020302) ; the National Natural Science Foundation of China(41276115) ; the National Basic Research Program of China(2010CB428706) |
| 卷 | v.59期:33页:129-135 |
| 语种 | 英文; |
| 分类号 | Q949.2 |
| ISSN号 | 1001-6538 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190228]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofMarineEcologyandEnvironmentalSciences,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Zhifu Wang,Zhiming Yu,Xiuxian Song,et al. Effects of ammonium and nitrate on encystment and growth of Scrippsiella trochoidea. 2014. |
入库方式： OAI收割
来源：海洋研究所
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