Isolation of Cadmium-Resistant Bacteria and Their Resistance Mechanisms : Part 1. Isolation of Cd-Resistant Bacteria from Soils Contaminated with Heavy Metals
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概要
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In the first series of studies aimed at addressing the environmental problems of soils and drainage systems, we attempted to isolate cadmium (Cd)-resistant bacteria from soils heavily contaminated with Cd and determine their growth rate in media with cadmium. In soils contaminated with heavy metals, there was on increase in the number of Cd-resistant bacteria. Among 14 Cd-resistant bacteria isolated from soils contaminated with heavy metals, only six strains (Flavobacterium sp., Comamonas testosteronii, Methylobacterium fujisawaense, Alcaligenes piechaudii, Alcaligenes xylosoxidans) were identified as new types of Cd-resistant bacteria. All the isolated resistant bacteria grew fast, and reached the maximum growth rates within 24 to 48 h (Growth conditions were as follows. Culture medium : nutrient broth, pH : 6.0, temperature : 30℃ and of concentration of added Cd : 0.1, 1.0, 10.0, and 100.0mg kg^<-1>).
- 社団法人日本土壌肥料学会の論文
著者
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Kanazawa Shinjiro
Department Of Agricuitural Chemistry Faculty Of Agriculture The University Of Tokyo
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Mori Keita
Kirin Beer Shiga-Factory
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