Nagoya University · Environmental Science
Professor Arata Katayama's research lab specializes in environmental microbiology and bioremediation, focusing on the microbial degradation of persistent organic pollutants such as pesticides, polychlorinated phenols, and organochlorine compounds. The lab investigates anaerobic and aerobic microbial consortia capable of degrading recalcitrant contaminants through reductive dechlorination and mineralization pathways, with particular emphasis on pentachlorophenol (PCP) and endosulfan. Using both laboratory-scale batch systems and continuous-flow bioreactor setups, the lab explores microbial community dynamics, metabolic pathways, and the influence of environmental factors such as electron donors and redox conditions. Their work also includes quinone profiling to assess long-term shifts in soil microbial communities under different agricultural management practices.
Figures are computed from collected data and may differ slightly.
Abstract A fungus, Trichoderma harzianum, was found to degrade DDT, dieldrin, endosulfan, pentachloronitrobenzene, and pentachlorophenol but not hexachlorocyclohexane. The fungus degraded endosulfan under various nutritional conditions throughout its growth stages. Endosulfan sulfate and endosulfan diol were detected as the major fungal metabolites of endosulfan. Piperonyl butoxide, when added to the growth medium, completely inhibited the endosulfan degradation. Di-n-propyl malaoxon also inhibi
Abstract Quinone profile analysis of stored air-dried soils gave an approximation of the long-term changes in the microbial community structure in four soils subjected to different types of fertilizer application from 1987 to 1997: unfertilized soil (NF-soil), soil amended with chemical fertilizers (CF-soil), soil amended with chemical fertilizers and 40 t ha-1 y-1 of farmyard manure (CF+ FYM-soil), and soil amended with 400 t ha-1 y-1 of farmyard manure (FYM-soil). The carbon content increased,
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