title: Bioremediation of soils co-contaminated with heavy metals and 2,4,5-trichlorophenol by fruiting body of Clitocybe maxima.
abstract: Pot experiments were performed to investigate the single effect of 2,4,5-trichlorophenol (TCP) or heavy metals (Cu, Cd, Cu+Cd) and the combined effects of metals-TCP on the growth of Clitocybe maxima together with the accumulation of heavy metals as well as dissipation of TCP. Results showed a negative effect of contaminations on fruiting time and biomass of the mushroom. TCP decreased significantly in soils accounting for 70.66-96.24% of the initial extractable concentration in planted soil and 66.47-91.42% in unplanted soil, which showed that the dissipation of TCP was enhanced with mushroom planting. Higher biological activities (bacterial counts, soil respiration and laccase activity) were detected in planted soils relative to unplanted controls, and the enhanced dissipation of TCP in planted soils might be derived from the increased biological activities. The metals accumulation in mushroom increased with the augment of metal load, and the proportion of acetic acid (HOAc) extractable metal in soils with C. maxima was larger than that in unplanted soils, which may be an explanation of metal uptake by C. maxima. These results suggested that the presence of C. maxima was effective in promoting the bioremediation of soil contaminated with heavy metals and TCP.
authors: Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China.
authors: Hongying
authors: H
authors: Liu
authors: Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China.
authors: Shanshan
authors: S
authors: Guo
authors: Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China.
authors: Kai
authors: K
authors: Jiao
authors: Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China.
authors: Junjun
authors: J
authors: Hou
authors: Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China.
authors: Han
authors: H
authors: Xie
authors: Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China. Electronic address: xuheng64@sina.com.
authors: Heng
authors: H
authors: Xu
mesh_terms: D019342:Acetic Acid / Q000737:chemistry; D000363:Agaricales / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D058491:Bacterial Load; D001673:Biodegradation, Environmental; D002104:Cadmium / Q000737:chemistry / Q000378:metabolism* / Q000633:toxicity; D002733:Chlorophenols / Q000378:metabolism*; D003300:Copper / Q000737:chemistry / Q000378:metabolism* / Q000633:toxicity; D048690:Fruiting Bodies, Fungal / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D042845:Laccase / Q000378:metabolism; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000737:chemistry / Q000378:metabolism* / Q000633:toxicity
chemical_list: D002733:Chlorophenols; D012989:Soil Pollutants; D002104:Cadmium; C009534:2,4,5-trichlorophenol; D003300:Copper; D042845:Laccase; D019342:Acetic Acid
keywords: Bioremediation; Clitocybe maxima; Co-contamination; Fruiting body; Soil