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Joshi AU, Hinsu AT, Kotadiya RJ, Rank JK, Andharia KN, Kothari RK. Decolorization and biodegradation of textile di-azo dye Acid Blue 113 by Pseudomonas stutzeri AK6. 3 Biotech 2020; 10:214. [PMID: 32351872 DOI: 10.1007/s13205-020-02205-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 04/12/2020] [Indexed: 11/29/2022] Open
Abstract
Textile industry is one of the anthropogenic activities that consume a large amount of water and pollute water bodies. It uses a massive amount of dyes, which is one of the main constituents of polluting textile effluent. In the present research, biodegradation of Acid Blue 113 dye, a commonly used textile di-azo dye, has been studied exploiting Pseudomonas stutzeri, strain AK6. The dye (300 ppm) was decolorized up to 86.2% within 96 h. The metabolites of Acid Blue 113 obtained after biodegradation were identified by various analytical techniques viz. HPLC (high-performance liquid chromatography) and GC-MS (gas chromatography-mass spectrometry). Genome analysis of isolate AK6 using IMG/M (Integrated Microbial Genomes and Microbiomes) system supported the role of azoreductase and laccase for the decolorization and degradation of azo dye. The ability of P. stutzeri AK6 to tolerate high amount of dye makes it a potential candidate for bioremediation and pre-processing to remove dyes from textile effluents.
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Affiliation(s)
- Anjali U Joshi
- UGC-CAS Department of Biosciences, Saurashtra University, Rajkot, Gujarat 360005 India
| | - Ankit T Hinsu
- UGC-CAS Department of Biosciences, Saurashtra University, Rajkot, Gujarat 360005 India
| | - Rohitkumar J Kotadiya
- UGC-CAS Department of Biosciences, Saurashtra University, Rajkot, Gujarat 360005 India
| | - Jalpa K Rank
- UGC-CAS Department of Biosciences, Saurashtra University, Rajkot, Gujarat 360005 India
| | - Kavan N Andharia
- UGC-CAS Department of Biosciences, Saurashtra University, Rajkot, Gujarat 360005 India
| | - Ramesh K Kothari
- UGC-CAS Department of Biosciences, Saurashtra University, Rajkot, Gujarat 360005 India
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Fu H, Jiang P, Zhao J, Wu C. Comparative Genomics of Pseudomonas sp. Strain SI-3 Associated With Macroalga Ulva prolifera, the Causative Species for Green Tide in the Yellow Sea. Front Microbiol 2018; 9:1458. [PMID: 30013544 PMCID: PMC6036183 DOI: 10.3389/fmicb.2018.01458] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Accepted: 06/12/2018] [Indexed: 11/25/2022] Open
Abstract
Algae-bacteria associations occurred widely in marine habitats, however, contributions of bacteria to macroalgal blooming were almost unknown. In this study, a potential endophytic strain SI-3 was isolated from Ulva prolifera, the causative species for the world's largest green tide in the Yellow Sea, following a strict bleaching treatment to eliminate epiphytes. The genomic sequence of SI-3 was determined in size of 4.8 Mb and SI-3 was found to be mostly closed to Pseudomonas stutzeri. To evaluate the characteristics of SI-3 as a potential endophyte, the genomes of SI-3 and other 20 P. stutzeri strains were compared. We found that SI-3 had more strain-specific genes than most of the 20 P. stutzeri strains. Clusters of Orthologous Groups (COGs) analysis revealed that SI-3 had a higher proportion of genes assigned to transcriptional regulation and signal transduction compared with the 20 P. stutzeri strains, including four rhizosphere bacteria, indicating a complicated interaction network between SI-3 and its host. P. stutzeri is renowned for its metabolic versatility in aromatic compounds degradation. However, significant gene loss was observed in several aromatic compounds degradation pathways in SI-3, which may be an evolutional adaptation that developed upon association with its host. KEGG analysis revealed that dissimilatory nitrate reduction to ammonium (DNRA) and denitrification, two competing dissimilatory nitrate reduction pathways, co-occurred in the genome of SI-3, like most of the other 20 P. stutzeri strains. We speculated that DNRA of SI-3 may contribute a competitive advantage in nitrogen acquisition of U. prolifera by conserving nitrogen in NH4+ form, as in the case of microalgae bloom. Collectively, these data suggest that Pseudomonas sp. strain SI-3 was a suitable candidate for investigation of the algae-bacteria interaction with U. prolifera and the ecological impacts on algal blooming.
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Affiliation(s)
- Huihui Fu
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Peng Jiang
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Jin Zhao
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Chunhui Wu
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
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Iyer R, Iken B, Damania A, Krieger J. Whole genome analysis of six organophosphate-degrading rhizobacteria reveals putative agrochemical degradation enzymes with broad substrate specificity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:13660-13675. [PMID: 29502257 DOI: 10.1007/s11356-018-1435-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 01/30/2018] [Indexed: 06/08/2023]
Abstract
Six organophosphate-degrading bacterial strains collected from farm and ranch soil rhizospheres across the Houston-metropolitan area were identified as strains of Pseudomonas putida (CBF10-2), Pseudomonas stutzeri (ODKF13), Ochrobactrum anthropi (FRAF13), Stenotrophomonas maltophilia (CBF10-1), Achromobacter xylosoxidans (ADAF13), and Rhizobium radiobacter (GHKF11). Whole genome sequencing data was assessed for relevant genes, proteins, and pathways involved in the breakdown of agrochemicals. For comparative purposes, this analysis was expanded to also include data from deposited strains in the National Center for Biotechnology Information's (NCBI) database. This study revealed Zn-dependent metallo-β-lactamase (MBL)-fold proteins similar to OPHC2 first identified in P. pseudoalcaligenes as the likely agents of organophosphate (OP) hydrolysis in A. xylosoxidans ADAF13, S. maltophilia CBF10-1, O. anthropi FRAF13, and R. radiobacter GHKF11. A search of similar proteins within NCBI identified over 200 hits for bacterial genera and species with a similar OPHC2 domain. Taken together, we conclude from this data that intrinsic low-level OP hydrolytic activity is likely prevalent across the rhizosphere stemming from widespread OPHC2-like metalloenzymes. In addition, P. stutzeri ODKF13, P. putida CBF10-2, O. anthropi FRAF13, and R. radiobacter GHKF11 were found to harbor glycine oxidase (GO) enzymes that putatively possess low-level activity against the herbicide glyphosate. These bacterial GOs are reported to catalyze the degradation of glyphosate to α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) and suggest a possible link to AMPA that can be found in glyphosate-contaminated agricultural soil. The presence of aromatic degradation proteins were also detected in five of six study strains, but are attributed primarily to components of the widely distributed β-ketoadipate pathway found in many soil bacteria.
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Affiliation(s)
- Rupa Iyer
- Center for Life Sciences Technology, Engineering Technology, University of Houston, 300 Technology Building, Houston, TX, 77204, USA.
| | - Brian Iken
- Center for Life Sciences Technology, Engineering Technology, University of Houston, 300 Technology Building, Houston, TX, 77204, USA
| | - Ashish Damania
- Department of Pediatrics-Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Jerry Krieger
- Center for Life Sciences Technology, Engineering Technology, University of Houston, 300 Technology Building, Houston, TX, 77204, USA
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