土壤2012，Vol.44Issue(3)：467-473,7.
矿区植物根内嗜鱼外瓶霉对重金属的耐性和超积累作用
Tolerance and Accumulation of Heavy Metals by Exophiala pisciphila Strain Isolated From Plant Roots Growing in Metal Polluted Soils
摘要
Abstract
A DSE stain was isolated from plant roots of Arundinella bengalensis (Spring.) Druce, naturally growing on the plot of lead-zinc mine areas in Huize, Yunnan Province. The isolate was identified as an Exophiala pisciphila strain by morphological characteristics and ITSI-5.8S rDNA-ITS 2 sequence analysis. The tolerance to heavy metals and accumulation abilities or the E pisciphila strain were investigated. MICs (minimum inhibitory concentration) to Pb2+, Zn2+ and Cd1+ of the fungus were 2.3,0.51, and 3.1 mg/ml, respectively. The E. pisciphila strain was able to accumulate lead, zinc and cadmium over 20%, 15% and 5% of its biomass (by dry weight), respectively. It was demonstrated that the fungi was supper accumulative and multi-tolerant to these metals. Fungi colonization in the roots may play important roles in reducing toxiciry to THe plant root cells of heavy metals in soils.关键词
深色有隔内生真菌/嗜鱼外瓶霉/重金属耐性和超积累作用Key words
Dark septate endophytes, Exophiala pisciphila, Tolerance and accumulation of heavy metals分类
生物科学引用本文复制引用
张玉洁,李洪超,赵之伟..矿区植物根内嗜鱼外瓶霉对重金属的耐性和超积累作用[J].土壤,2012,44(3):467-473,7.基金项目
国家自然科学基金项目(NSFC40763003)、云南省教育厅重点基金项目(2010Z038)和文山学院生物学重点学科项目(11WSXK02)资助, （NSFC40763003）
