Transformation of roxarsone by Enterobacter sp. CZ-1 isolated from an arsenic-contaminated paddy soil

Content Provider	Scilit
Author	Huang, K. Gao, F. Zhao, F. J.
Copyright Year	2019
Description	Roxarsone [Rox(V)] is widely used as a feed additive in poultry industries. This arsenic-containing compound may be degraded by microbes to release toxic inorganic arsenic in the environment. To date, most of the studies of microbial mediated Rox(V) degradation have focused on anaerobic microorganisms. Here, we isolated a pure cultured aerobic Rox(V)-degrading bacterial strain, CZ-1, from an arsenic-contaminated paddy soil in China. On the basis of 16S rRNA gene sequence, strain CZ-1 was classified as a member of genus Enterobacter. This strain could efficiently degrade Rox(V), converting all of 10 μM Rox(V) within 24 h in liquid culture. Four metabolites including n-acetyl-4-hydroxy-m-arsanilic acid (N-AHPAA[V]), 3-amino-4-hydroxyphenylarsonic acid (3-AHPAA[V]), arsenite (As[III]) and an unknown arsenic compound were detected and identified by HPLC-ICP-MS and HPLC-LC-MS. N-AHPAA(V) was the main product, likely to be formed from acetylation of 3-AHPAA(V). Based on these results, a novel degradation pathway of Rox(V) by Enterobacter. sp CZ-1 is proposed. Book Name: Environmental Arsenic in a Changing World
Related Links	https://api.taylorfrancis.com/content/chapters/oa-edit/download?identifierName=doi&identifierValue=10.1201/9781351046633-108&type=chapterpdf
Ending Page	273
Page Count	2
Starting Page	272
DOI	10.1201/9781351046633-108
Language	English
Publisher	Informa UK Limited
Publisher Date	2019-08-23
Access Restriction	Open
Subject Keyword	Book Name: Environmental Arsenic in a Changing World Entomology Urology and Nephrology Contaminated Arsenic Microorganisms Enterobacter Roxarsone
Content Type	Text
Resource Type	Chapter