王珊珊;王明兹;李敏;陈必链;

• 1:福建师范大学工业微生物教育部工程研究中心生命科学学院福建省现代发酵技术工程研究中心

摘要(Abstract)：

研究了Pb、Zn、Cu、Cd、Mn、Cr、Ni等7种重金属离子对栅藻生长代谢的影响.定时测定重金属处理后藻的生长情况、叶绿素a和粗油脂含量.结果表明,栅藻对Pb的耐受性最强,耐受能力可达20 mg·L-1,Zn、Mn、Ni其次,对Cu、Cd、Cr比较敏感,耐受性仅为1 mg·L-1.当重金属离子质量浓度在1 mg·L-1以下,Pb、Zn促进栅藻生长,同时提高其叶绿素a含量.Pb质量浓度为0.5 mg·L-1时,生物量最高,达0.642 mg·L-1,随着质量浓度提高,粗油脂含量增加,脂肪酸主要组分为棕榈酸甲酯、油酸甲酯、亚油酸甲酯、亚麻酸甲酯,并且随着胁迫质量浓度的增加,脂肪酸含量明显增加.超过一定质量浓度后,重金属离子抑制栅藻的生长,并导致生物量下降,Zn质量浓度高于5 mg·L-1时,栅藻叶绿素a含量降至1 mg·L-1以下.

关键词(KeyWords)： 重金属;栅藻;耐受性;生长代谢

Abstract:

Keywords:

基金项目(Foundation): 福建省发展与改革委员会资助项目(闽发改高技[2011]1598);; 福建省环境保护厅资助项目(FJHK200912)

作者(Authors): 王珊珊;王明兹;李敏;陈必链;

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