title: Biosorption and bioaccumulation of thallium by thallium-tolerant fungal isolates.
abstract: Little is known about the biosorption and bioaccumulation capacity of thallium (Tl) by microorganisms that occur in Tl-polluted soil. The present study focused on characterizing the biosorption and bioaccumulation of Tl by Tl-tolerant fungi isolated from Tl-polluted soils. Preliminary data showed a positive correlation between the biomass and the biosorbed Tl content. The Tl-tolerant strains were capable of bioaccumulating Tl, up to 7189 mg kg(-1) dry weight. The subcellular distribution of Tl showed obvious compartmentalization: cytoplasm ≫ cell wall > organelle. The majority of Tl (up to 79%) was found in the cytoplasm, suggesting that intracellular compartmentalization appeared to be responsible for detoxification. These findings further suggest the applicability of the fungal isolates for cleanup of Tl in Tl-polluted water and soil.
authors.affiliation: School of Resources and Environmental Engineering, Guizhou Institute of Technology, Guiyang, 550001, China.|Guizhou Institute of Environmental Science and Design, Guiyang, 550002, China.|State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China.
authors.forename: Jialong
authors.initials: J
authors.lastname: Sun
authors.affiliation: Institute of Fungal Resources, Guizhou University, Guiyang, 550081, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Zou
authors.affiliation: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China. xiaotangfu@vip.gyig.ac.cn.
authors.forename: Tangfu
authors.initials: T
authors.lastname: Xiao
authors.affiliation: School of Resources and Environmental Engineering, Guizhou Institute of Technology, Guiyang, 550001, China.|State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China.
authors.forename: Yanlong
authors.initials: Y
authors.lastname: Jia
authors.affiliation: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China.
authors.forename: Zengping
authors.initials: Z
authors.lastname: Ning
authors.affiliation: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China.
authors.forename: Min
authors.initials: M
authors.lastname: Sun
authors.affiliation: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China.
authors.forename: Yizhang
authors.initials: Y
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Jiang
mesh_terms: D001673:Biodegradation, Environmental; D018533:Biomass; D005658:Fungi / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism*; D012987:Soil / Q000737:chemistry; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000302:isolation & purification* / Q000378:metabolism* / Q000633:toxicity; D013793:Thallium / Q000302:isolation & purification* / Q000378:metabolism* / Q000633:toxicity
chemical_list: D012987:Soil; D012989:Soil Pollutants; D013793:Thallium
keywords: Bioaccumulation; Biosorption; Fungal isolates; Subcellular distribution; Thallium