萘、菲和芘对铜绿微囊藻生长的影响  

Effects of Naphthalene,Phenanthrene and Pyrene on Growth of Microcystis aeruginosa

作　　者：王秀翠[1] 高彦征[1] 朱雪竹[1] 靳瑮 王万清[1] 杨艳[1] 

机构地区：[1]南京农业大学资源与环境科学学院,土壤有机污染控制与修复研究所,南京210095

出　　处：《农业环境科学学报》2014年第4期656-663,共8页Journal of Agro-Environment Science

基　　金：湖泊与环境国家重点实验室开放基金项目(2010SKL012);国家自然科学基金(31270574;41071212);中央高校基本科研业务费(KYZ201109)

摘　　要：采用实验室培养铜绿微囊藻(M.aeruginosa)的方法,研究了3种多环芳烃(萘、菲和芘)对铜绿微囊藻生长和光合作用的影响。结果表明,菲对微囊藻生长的影响高于萘与芘,微量萘、芘暴露可对微囊藻生长具有一定的促进作用,而高浓度暴露组均抑制了微囊藻的生长,其比生长速率与暴露浓度显著负相关(P<0.05),Pearson相关系数为-0.884～-0.653;高浓度萘、芘暴露对微囊藻的毒性都随着时间的延长而减弱,高浓度菲暴露对微囊藻产生不可逆的毒害作用。菲、芘通过降低微囊藻叶绿素a含量和光合速率抑制微囊藻的生长。A laboratory culture was conducted to examine the effects of naphthalene,phenanthrene and pyrene on the growth and photosynthesis of Microcystis aeruginosa. Phenanthrene had greater effect on the growth of M. aeruginosa than naphthalene and pyrene did. Both pyrene and naphthalene at low doses promoted the growth of M. aeruginosa,while all high doses of PAHs significantly decreased its growth rates. Specific growth rates had a significant negative correlation with PAH concentrations（P〈0.05）. Pearson correlation coefficients were between-0.884 and-0.653. The toxicities of both naphthalene and pyrene to M. aeruginosa reduced as the exposure time extended.Phenanthrene exposure caused an irreversible toxicity. The inhibition of phenanthrene and pyrene on M. aeruginosa growth was caused by the reduction of chlorophyll a content and photosynthesis rate in M. aeruginosa.

关 键 词：铜绿微囊藻 多环芳烃 比生长速率 光合作用 叶绿素A 光合速率 

分 类 号：X172[环境科学与工程—环境科学]