Assimilative and co-metabolic degradation of chloral hydrate by bacteria and their bioremediation potential

Although the bacterial degradation of chloral hydrate (CH) has been recognized for several decades, its degradation pathway by assimilation has not been demonstrated. In this paper, we report the isolation of the LF54 bacterial strain, which utilizes CH as its sole carbon and energy source. LF54 converted CH into trichloroethanol (TCAol), which was dehalogenated to dichloroethanol (DCAol), and CO2 was detected as the end product. Another strain that we isolated, RS20, co-metabolized CH into TCAol. Our 16S rRNA gene sequencing and taxonomic analyses revealed that the LF54 and RS20 strains belong to the Pseudomonas and Arthrobacter genera, respectively. When the two strains were inoculated into soil microcosms, both degraded 0.3 mM CH to undetectable levels (< 0.01 mM) within 5 days. These results suggest that LF54 and RS20 could be used in the bioremediation of CH-contaminated environments

「みなす」差別と向き合い，看破する児童・生徒の育成を目指す授業開発−小学校歴史単元「江戸の社会の変化と人々」における「役者村」の成立と発展を事例に−

departmental bulletin pape

Greenhouse gas observation in the stratosphere over Antarctica

第１回極域科学シンポジウム「極域大気圏を通して探る地球規模環境変動」ポスター発

分布図から時代の特色と転換を理解する原始・古代史授業開発 : 小単元「残されたモノから古代社会のしくみを探れ！」を手掛かりに

departmental bulletin pape