厦门大学学报（自然科学版）2018，Vol.57Issue(3)：329-336,8.DOI:10.6043/j.issn.0438-0479.201705005
常见海洋细菌对纳米二氧化钛的响应
Responses of Common Marine Bacteria to Nano Titanium Dioxide
摘要
Abstract
In order to evaluate the effects of nanometer materials on marine ecological environment,we investigated the effect of nano-TiO 2 (25 nm)on the growth of six common marine bacteria,including Marinobacter sp.,Halomonas sp.,Alteromonas sp.,Vib-rio parahaemolyticus ,and two marine cyanobacterial strains,Synechococcus sp.XM-24 and Synechococcus sp.299,with two model strains,Escherichia coli and Bacillus subtilis ,as controls.Growth curve and biomass were measured to assess the effect of different concentrations of nano-TiO 2 (0.1,1,10,100 mg/L)on the growth of tested bacteria.The chlorophyll a content of Synechococcus sp. was measured to test the photosynthetic activity.The results showed that low concentrations (0.1,1 mg/L)of nano-TiO 2 had little effect (p >0.05)on marine bacteria,in both light and dark conditions,while high concentrations (10,100 mg/L)of nano-TiO 2 inhibited the growth of marine bacteria.The inhibition effects became more remarkable as the concentration of nano-TiO 2 increased, and 100 mg/L nano-TiO 2 had inhibitory effect on the synthesis of chlorophyll a of Synechococcus sp.299.The inhibitory effect of nano-TiO 2 on the non-photosynthetic bacteria showed significant difference (p <0.05)after 18 h,while the same effect was shown for Synechococcus sp.after 6 d (p <0.05).This study can provide basic knowledge for assessing the effect of nano-TiO 2 on marine ecological safety.关键词
纳米TiO2/海洋细菌/聚球藻/毒性效应Key words
nano-TiO 2/marine bacteria/Synechococcus sp./toxic effect分类
生物科学引用本文复制引用
陈嘉祥,王兆守,邵宗泽..常见海洋细菌对纳米二氧化钛的响应[J].厦门大学学报（自然科学版）,2018,57(3):329-336,8.基金项目
厦门南方海洋研究中心项目(14CZP034HJ08) （14CZP034HJ08）
国家海洋局海洋生物遗传资源重点实验室开放研究基金(HY201505) （HY201505）
