کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5740391 1616297 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Degradation of three monochlorobenzoate isomers by different bacteria isolated from a contaminated soil
ترجمه فارسی عنوان
تجزیه سه ایزومر مونوکلروبنزوات توسط باکتری های مختلف جدا شده از خاک آلوده
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست علوم زیست محیطی (عمومی)
چکیده انگلیسی
Three monochlorobenzoate isomer-utilizing bacterial strains, Pseudomonas sp. 2-CBA, Pseudomonas sp. 3-CBA, and Hydrogenophaga sp. 4-CBA, were isolated from a haloaromatic-contaminated soil in a disused chemical factory in Nanjing, China. Compared to strain 3-CBA and strain 4-CBA, which could only utilize its corresponding monochlorobenzoate isomer (3-chlorobenzoate and 4-chlorobenzoate) as the sole carbon source for growth, strain 2-CBA could utilize both 2-chlorobenzoate and 3-chlorobenzoate for growth. The three monochlorobenzoate isomers were catabolized via three different dechlorination pathways in the three isolates, respectively. 3-Chlorobenzoate was initially catabolized by the benzoate 1,2-dioxygenase (BenABCD) in strain 3-CBA, whereas 2-chlorobenzoate was catabolized by the hybrid 2-halobenzoate 1,2-dioxygenase system in strain 2-CBA, which comprised of the terminal oxygenase component of 2-halobenzoate dioxygenase system (CbdAB) and the reductase component of benzoate 1,2-dioxygenase system (BenC). For 4-chlorobenzoate, it was catabolized via the classic hydrolytic dehalogenation pathway in strain 4-CBA. While, strain 4-CBA seemed to have a more compact gene cluster of fcbABC compared to previously reported strains. This study provides new insights into the catabolic diversity of structurally similar isomers in a contaminated niche.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Biodeterioration & Biodegradation - Volume 120, May 2017, Pages 192-202
نویسندگان
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