TEXTILE DYE BIOREMEDIATION POTENTIAL OF SOME RHIZOBIAL STRAINS AND THEIR HEAVY-METAL AND HIGH SALINITY TOLERANCE

The discharge of untreated textile dye effluents enriched with toxic pollutants including dyes, heavy metals and other hazardous materials may cause negative impacts on the entire ecosystem. The proposed work aimed to isolate, molecularly identify and characterize the native rhizobial strains with t...

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Main Authors: Catalina Stedel, Rodica Catalina Efrose, Craita Maria Rosu
Format: Article
Language:English
Published: "Alexandru Ioan Cuza" University of Iași 2019-09-01
Series:Journal of Experimental and Molecular Biology
Subjects:
Online Access:http://www.jemb.bio.uaic.ro/index.php/jemb/article/view/35
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author Catalina Stedel
Rodica Catalina Efrose
Craita Maria Rosu
author_facet Catalina Stedel
Rodica Catalina Efrose
Craita Maria Rosu
author_sort Catalina Stedel
collection DOAJ
description The discharge of untreated textile dye effluents enriched with toxic pollutants including dyes, heavy metals and other hazardous materials may cause negative impacts on the entire ecosystem. The proposed work aimed to isolate, molecularly identify and characterize the native rhizobial strains with textile dye biodegradation potential in relation with their tolerance to high salinity and heavy metals (usually meet in high concentrations in the textile dye effluents). Native rhizobial strains were isolated from various terrestrial ecosystems originated in Danube – Delta Biosphere Reserve. Most of the strains tolerated ≥ 2.0% NaCl. Our data showed that 3 strains (Agrobacterium sp.CR-B19; Rhizobium giardinii CR- B22 and Ensifer sp.CR-B26) were able to tolerate 15 ppm concentration of cadmium (Cd2+), whereas all strains identified as Rhizobium sp. (except R. leguminosarum CR-B10), and Agrobacterium sp. could tolerate 70 ppm of chromium (Cr6+).. Moreover, 3 indigenous strains (Rhizobium giardinii CR-B13; Rhizobium sp.CR-B15 and Agrobacterium sp. CR-B19) tolerated a concentration of 200 ppm of lead (Pb2+). In regard to azo-dye degrading potential, only Rhizobium leguminosarum CR-B10 was able to degrade the Reactive Orange 16 dye (90.18% decolorization) in stationary conditions, at 30°C. Comparatively, Agrobacterium sp. CR - B19 strain removed Reactive Orange 16 (sulphonic azo-dye) (78.92 % decolorization) and Reactive Blue 4 (antraquinonic dye) (12 % decolorization) by adsorbtion. Based on their bioremediation potential, the newly isolated rhizobial strains could be further used (in pure culture or in consortia) to develop a new environmental friendly and cost–effective biotechnology in order to reduce the toxicity of textile dyes effluents.
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spelling doaj.art-8510687332ed46868a7da4334f2c047d2024-04-03T00:16:13Zeng"Alexandru Ioan Cuza" University of IașiJournal of Experimental and Molecular Biology2601-69742019-09-01201-2TEXTILE DYE BIOREMEDIATION POTENTIAL OF SOME RHIZOBIAL STRAINS AND THEIR HEAVY-METAL AND HIGH SALINITY TOLERANCECatalina StedelRodica Catalina EfroseCraita Maria RosuThe discharge of untreated textile dye effluents enriched with toxic pollutants including dyes, heavy metals and other hazardous materials may cause negative impacts on the entire ecosystem. The proposed work aimed to isolate, molecularly identify and characterize the native rhizobial strains with textile dye biodegradation potential in relation with their tolerance to high salinity and heavy metals (usually meet in high concentrations in the textile dye effluents). Native rhizobial strains were isolated from various terrestrial ecosystems originated in Danube – Delta Biosphere Reserve. Most of the strains tolerated ≥ 2.0% NaCl. Our data showed that 3 strains (Agrobacterium sp.CR-B19; Rhizobium giardinii CR- B22 and Ensifer sp.CR-B26) were able to tolerate 15 ppm concentration of cadmium (Cd2+), whereas all strains identified as Rhizobium sp. (except R. leguminosarum CR-B10), and Agrobacterium sp. could tolerate 70 ppm of chromium (Cr6+).. Moreover, 3 indigenous strains (Rhizobium giardinii CR-B13; Rhizobium sp.CR-B15 and Agrobacterium sp. CR-B19) tolerated a concentration of 200 ppm of lead (Pb2+). In regard to azo-dye degrading potential, only Rhizobium leguminosarum CR-B10 was able to degrade the Reactive Orange 16 dye (90.18% decolorization) in stationary conditions, at 30°C. Comparatively, Agrobacterium sp. CR - B19 strain removed Reactive Orange 16 (sulphonic azo-dye) (78.92 % decolorization) and Reactive Blue 4 (antraquinonic dye) (12 % decolorization) by adsorbtion. Based on their bioremediation potential, the newly isolated rhizobial strains could be further used (in pure culture or in consortia) to develop a new environmental friendly and cost–effective biotechnology in order to reduce the toxicity of textile dyes effluents.http://www.jemb.bio.uaic.ro/index.php/jemb/article/view/35BIOREMEDIATION
spellingShingle Catalina Stedel
Rodica Catalina Efrose
Craita Maria Rosu
TEXTILE DYE BIOREMEDIATION POTENTIAL OF SOME RHIZOBIAL STRAINS AND THEIR HEAVY-METAL AND HIGH SALINITY TOLERANCE
Journal of Experimental and Molecular Biology
BIOREMEDIATION
title TEXTILE DYE BIOREMEDIATION POTENTIAL OF SOME RHIZOBIAL STRAINS AND THEIR HEAVY-METAL AND HIGH SALINITY TOLERANCE
title_full TEXTILE DYE BIOREMEDIATION POTENTIAL OF SOME RHIZOBIAL STRAINS AND THEIR HEAVY-METAL AND HIGH SALINITY TOLERANCE
title_fullStr TEXTILE DYE BIOREMEDIATION POTENTIAL OF SOME RHIZOBIAL STRAINS AND THEIR HEAVY-METAL AND HIGH SALINITY TOLERANCE
title_full_unstemmed TEXTILE DYE BIOREMEDIATION POTENTIAL OF SOME RHIZOBIAL STRAINS AND THEIR HEAVY-METAL AND HIGH SALINITY TOLERANCE
title_short TEXTILE DYE BIOREMEDIATION POTENTIAL OF SOME RHIZOBIAL STRAINS AND THEIR HEAVY-METAL AND HIGH SALINITY TOLERANCE
title_sort textile dye bioremediation potential of some rhizobial strains and their heavy metal and high salinity tolerance
topic BIOREMEDIATION
url http://www.jemb.bio.uaic.ro/index.php/jemb/article/view/35
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AT rodicacatalinaefrose textiledyebioremediationpotentialofsomerhizobialstrainsandtheirheavymetalandhighsalinitytolerance
AT craitamariarosu textiledyebioremediationpotentialofsomerhizobialstrainsandtheirheavymetalandhighsalinitytolerance