您好，欢迎访问江苏省农业科学院 机构知识库！
江苏省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Arsenite Oxidation by Dunaliella salina is Affected by External Phosphate Concentration

文献类型： 外文期刊

作者： Wang, Ya 1 ; Zhang, Chunhua 4 ; Yu, Xiangyang 2 ; Ge, Ying 1 ;

作者机构： 1.Nanjing Agr Univ, Coll Resources & Environm Sci, Jiangsu Prov Key Lab Marine Biol, Nanjing 210095, Peoples R China

2.Minist Sci & Technol, State Key Lab Cultivat Base, Jiangsu Key Lab Food Qual & Safety, Nanjing 210014, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Food Safety & Nutr, Nanjing 210014, Peoples R China

4.Nanjing Agr Univ, Coll Life Sci, Lab Ctr Life Sci, Demonstrat Lab Element & Life Sci Res, Nanjing 210095, Peoples R China

关键词： Arsenite oxidation; Dunaliella salina; Phosphate; 2; 4-dinitrophenol

期刊名称：BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY （ 影响因子：2.151； 五年影响因子：2.129 ）

ISSN： 0007-4861

年卷期： 2020 年 105 卷 6 期

页码：

收录情况： SCI

摘要： Arsenic (As) contamination in terrestrial and aquatic environments is a well-known global environmental problem. The biooxidation of arsenite [As(III)] and subsequent arsenate [As(V)] removal have increasingly been used for remediation of As-polluted groundwater. However, little is known about As(III) oxidation by microalgae, especially those from saltwater environments. In this study, we investigated As(III) toxicity and oxidation in the marine microalga Dunaliella salina in the presence of different phosphate concentrations. The results of the As(III) toxicity experiments showed that D. salina was tolerant to As(III) (5.4 +/- 0.31 mg As L-1 at 72 h of culture). The As(V) percentage in the P-enriched (11.2 mg L-1) medium was 7.2-fold greater than in the P-deficient one after 24-h exposure, indicating As(III) oxidation by D. salina was more pronounced with increased phosphate levels. Treatment of As(III) with and without 2,4-dinitrophenol (DNP) on the algal cells showed that As(III) oxidation occurred mainly on the cell surface and in the cytoplasm of D. salina. The results of this study suggest that transformation of As(III) into As(V) may be an important pathway of detoxification in D. salina and that phosphate plays a key role in this oxidation process.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：江苏省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台