中山大学学报（自然科学版）2012，Vol.51Issue(1)：107-113,121,8.
一株菲降解菌的生长特性及其对荧蒽和芘的降解能力
The Growth Characteristics and Fluoranthene and Pyrene Degradation Potential of a Phenanthrene-degrading Strain
摘要
Abstract
The effects of different culture conditions including temperature, pH, initial phenanthrene concentration and co-substrates on the growth of a phenanthrene-degrading strain PE1501-1 affiliated to the genus Azospirillum were studied. The potential degradation of fluoranthene and pyrene by strain PE1501-1 in liquid culture medium or soil microcosm were investigated. The strain shows better growth under slightly acid culture conditions. Optimal temperature and pH are as 30 ℃ and 5. 0 respectively in a mineral salts liquid medium with phenanthrene at 50 mg/L as the sole substrate. The strain is able to tolerate higher initial phenanthrene concentration than 200 mg/L, while an obvious lag phase is observed when the strain is exposed to high initial phenanthrene concentration. The growth of strain PE1501-1 is transitorily enhanced by the individual addition of acetic acid, dissolved fulvic acid or dissolved humic acid as the co-substrate of phenanthrene. Strain PE1501-1 is able to grow in liquid culture media by utilizing phenanthrene or fluorenthene as the sole carbon and energy source with the potential to degrade flu-orenthene but not pyrene. The removal of phenanthrene, fluorenthene or pyrene is enhanced by adding strain PE 1501-1 in sterile soils.关键词
菲降解菌/培养条件/生物降解/荧蒽/芘Key words
phenanthrene-degrading strain/ culture conditions/ biodegradation/ fluoranthene/ pyrene分类
环境科学引用本文复制引用
杨秀虹,汤婉环,李适宇..一株菲降解菌的生长特性及其对荧蒽和芘的降解能力[J].中山大学学报（自然科学版）,2012,51(1):107-113,121,8.基金项目
广东省自然科学基金资助项目(04009791) （04009791）
广东省环境污染控制与修复技术重点实验室开放研究基金资助项目(2006K0018) （2006K0018）
