| 前沟藻(Amphidinium hoefleri)和角刺藻(Chaetoceros gracilis)二甲基硫生产的实验研究 |
| 摘要点击 948 全文点击 1844 投稿时间：1998-04-14 |
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| 中文关键词 角刺藻 前沟藻 二甲基硫 叶绿素a 海洋环境 |
| 英文关键词 Chaetoceros gracilis Amphidinium hoefleri dimethylsulfide chlorophyll a. marine environments |
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| 中文摘要 |
| 用实验室模拟的方法着重研究硅藻的角刺藻(Chaetoceros gracilis)和浮游甲藻的前沟藻(Amphidinium hoefleri)生长过程中DMS的生产及不同氮营养条件下对前沟藻DMS生产的影响。结果表明：(1)前沟藻和角刺藻都可以生产二甲基硫(DMS),但2者DMS生产能力有很大差别,前沟藻DMS平均生产率大约是角刺藻的100倍。(2)不同生理阶段的DMS产量不同。对数增长期的前沟藻细胞释放DMS的能力最强,其DMS速率是指数增长期的3倍。静止期和衰老期的前沟藻细胞DMS的生产能力下降。(3)低氮条件对前沟藻细胞DMS有促进作用。其中低浓度组(0.5mg/LNaNO3)DMS产率是高浓度组(50mg/L)的4倍。 |
| 英文摘要 |
| The production of Dimethylsulfide(DMS) during Chaetoceros gracilis and Amphidinium hoefleri growing period is discussed by the laboratory simulation in this paper.The conclusions are:(1)Both Amphidinium hoefleri and Chaetoceros gracilis can produce DMS,but their production abilities are different.The average DMS production rate of Amphidinium hoefleri is about 100 times than that of Chaetoceros gracilis. (2)In different physiological stages of phytoplankton the DMS production rates are different.The Amphidinium hoefleri cell in the log stage produces the largest amount of DMS,which is about three times than that of exponential stage.The cell in the senescent stage produces less DMS.(3)Low nitrate level could stimulate DMS production of Amphidinium hoefleri cell.DMS production rate of cell in the lower NaNO3 concentration (0.5mg/L) is four times than that of the higher NaNO3 concentration (50mg/L). |
