title: Isolation, Identification and Characterization of Two Aluminum-Tolerant Fungi from Acidic Red Soil.
abstract: Acidic red soil from a forest in Jiangxi Province was selected to isolate aluminum (Al)-resistant microbes, from which eight fungi were isolated. Two strains (S4 and S7) were found to be extremely tolerant to Al concentrations of up to 550 mmol L(-1) and could grow at low pH levels (3.20-3.11). Morphological and 26S rDNA sequence analyses indicated that strain S4 belonged to Eupenicillium, while strain S7 was an unclassified Trichocomaceae. Further investigation showed that both strains were endowed with the ability to resist Al; strain S4 accumulated such a substantial amount of Al that its growth was limited to a larger extent than strain S7. The lower amounts of Al adsorbed in the mycelium and the much larger amounts of Al retained in the medium, in addition to the color change of the culture solution, implied that these two strains may resist Al by preventing Al from entering the cell and by chelating Al by secreting unique metabolites outside of the cell.
authors.affiliation: School of Life Sciences, Key Laboratory of Biology Diversity and Ecological Engineering of Jiangxi Province, Jinggangshan University, Ji'an, China.
authors.forename: Genhe
authors.initials: G
authors.lastname: He
authors.affiliation: Jiangxi Academy of Forestry, Nanchang, China.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Wang
authors.affiliation: School of Life Sciences, Key Laboratory of Biology Diversity and Ecological Engineering of Jiangxi Province, Jinggangshan University, Ji'an, China.
authors.forename: Genhong
authors.initials: G
authors.lastname: Liao
authors.affiliation: School of Life Sciences, Anhui Science and Technology University, Fengyang, China.
authors.forename: Shoucheng
authors.initials: S
authors.lastname: Huang
authors.affiliation: Department of Hydrosciences, State Key Laboratory of Pollution Control and Resources Reuse, Nanjing University, Nanjing, China.
authors.forename: Jichun
authors.initials: J
authors.lastname: Wu
keywords: Al tolerance; Al tolerant microbe; Aluminum toxicity; Fungi