کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4364930 1616328 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Rhizoremediation of phenol and chromium by the synergistic combination of a native bacterial strain and Brassica napus hairy roots
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست علوم زیست محیطی (عمومی)
پیش نمایش صفحه اول مقاله
Rhizoremediation of phenol and chromium by the synergistic combination of a native bacterial strain and Brassica napus hairy roots
چکیده انگلیسی


• We study a native Pantoea sp. strain with Cr (VI) and phenol removal capabilities.
• We examine the ability of Brassica napus HRs to reduce Cr (VI).
• B. napus HRs accumulate high chromium concentrations as Cr (III).
• B. napus HR-Pantoea sp. FC: Efficient association for chromium and phenol remediation.

A bacterial strain resistant to phenol and Cr (VI) was isolated from an industrial polluted soil of Córdoba province (Argentina), which was identified as Pantoea sp. FC 1. This microorganism was able to use phenol as sole carbon source. In addition it was capable of reducing Cr (VI) to Cr (III) in mineral and nutrient media. The isolated strain exhibited some properties as plant-growth promoting bacterium (PGPB), such as production of Indole Acetic Acid (IAA) and synthesis of siderophores, as well as being capable of solubilizing inorganic phosphates. A rhizoremediation system using the association Pantoea sp. FC 1-Brassica napus hairy roots (HRs) was tested for phenol and Cr (VI) removal in a hydroponic system. Microbial inoculation improved both phenol removal and chromium accumulation efficiency by HRs, showing a significant increase in Cr (III) accumulation compared to non-inoculated HRs, exceeding 1000 mg kg−1. Cr (III) was detected in HR biomass and supernatants, suggesting a possible Cr (VI) reducing activity of B. napus HRs. Basic studies in plant model systems, such as HRs, provide additional useful information that could facilitate the transition of this technology into plants suitable for practical rhizoremediation applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Biodeterioration & Biodegradation - Volume 88, March 2014, Pages 192–198
نویسندگان
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