朱蓉,张洪海,张婧,杨桂朋

• 1:中国海洋大学化学化工学院
• 2:海洋国家实验室海洋生态与环境科学功能实验室

摘要(Abstract)：

本文通过实验室培养研究了不同氮磷比(0∶1、5∶1、20∶1、50∶1)以及铁浓度(10、100、1 000nmol·L-1)对尖刺拟菱形藻、塔玛亚历山大藻二甲基硫(DMS)和二甲巯基丙酸内盐(DMSP)产生的影响。氮营养和磷营养对尖刺拟菱形藻释放DMSP和DMS没有明显的影响,但是塔玛亚历山大藻受N/P比的影响则很显著,低N/P比(0∶1)条件下的DMS浓度是高N/P比(50∶1)条件下的2.5倍。另外,培养液中不同初始铁浓度会影响到细胞内DMSP的合成和DMS的释放,且具有种间差异,高Fe3+浓度有助于尖刺拟菱形藻藻液中DMSPd的形成以及DMS的释放,却抑制了塔玛亚历山大藻细胞内DMSP的生产。总的来说,浮游植物产生DMSP先取决于对营养盐的总体需求,其次是营养盐的比例。

关键词(KeyWords)： 二甲基硫(DMS);二甲巯基丙酸内盐(DMSP);尖刺拟菱形藻;塔玛亚历山大藻;氮磷比;铁

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2016YFA0601301);; 国家自然科学基金重大国际合作研究项目(41320104008);国家自然科学基金面上项目(41576073);; 海洋国家实验室“鳌山人才”卓越科学家计划项目(2015ASTP-OS12)资助~~

作者(Author): 朱蓉,张洪海,张婧,杨桂朋

DOI: 10.16441/j.cnki.hdxb.20170361

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