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Mukherjee P, Sharma RS, Rawat D, Sharma U, Karmakar S, Yadav A, Mishra V. Microbial communities drive flux of acid orange 7 and crystal violet dyes in water-sediment system. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119699. [PMID: 38070426 DOI: 10.1016/j.jenvman.2023.119699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/21/2023] [Accepted: 11/21/2023] [Indexed: 01/14/2024]
Abstract
Unchecked dye effluent discharge poses escalating environmental and economic concerns, especially in developing nations. While dyes are well-recognized water pollutants, the mechanisms of their environmental spread are least understood. Therefore, the present study examines the partitioning of Acid Orange 7 (AO7) and Crystal Violet (CV) dyes using water-sediment microcosms and reports that native microbes significantly affect AO7 decolorization and transfer. Both dyes transition from infused to pristine matrices, reaching equilibrium in a fortnight. While microbes influence CV partitioning, their role in decolorization is minimal, emphasizing their varied impact on the environmental fate of dyes. Metagenomic analyses reveal contrasting microbial composition between control and AO7-infused samples. Control water samples displayed a dominance of Proteobacteria (62%), Firmicutes (24%), and Bacteroidetes (9%). However, AO7 exposure led to Proteobacteria reducing to 57% and Bacteroidetes to 3%, with Firmicutes increasing to 34%. Sediment samples, primarily comprising Firmicutes (47%) and Proteobacteria (39%), shifted post-AO7 exposure: Proteobacteria increased to 53%, and Firmicutes dropped to 38%. At the genus level, water samples dominated by Niveispirillum (34%) declined after AO7 exposure, while Bacillus and Pseudomonas increased. Notably, Serratia and Sphingomonas, known for azo dye degradation, rose post-exposure, hinting at their role in AO7 decolorization. Conversely, sediment samples showed a decrease in the growth of Bacillus and an increase in that of Pseudomonas and Serratia. These findings emphasize the significant role of microbial communities in determining the environmental fate of dyes, providing insights on its environmental implications and management.
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Affiliation(s)
- Paromita Mukherjee
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi, 110 007, India
| | - Radhey Shyam Sharma
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi, 110 007, India; Delhi School of Climate Change & Sustainability, Institute of Eminence, University of Delhi, Delhi, 110007, India.
| | - Deepak Rawat
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi, 110 007, India; Department of Environmental Studies, Janki Devi Memorial College (University of Delhi), New Delhi, 110060, India
| | - Udita Sharma
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi, 110 007, India
| | - Swagata Karmakar
- Department of Environmental Studies, Ram Lal Anand College, Benito Juarez Marg, South Campus, New Delhi-110021, India
| | - Archana Yadav
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi, 110 007, India
| | - Vandana Mishra
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi, 110 007, India; Centre for Interdisciplinary Studies on Mountain & Hill Environment (CISMHE), University of Delhi, Delhi, 110007, India; Biodiversity Parks, University of Delhi- Delhi Development Authority Programme, Delhi, 110007, India.
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Rawat D, Sharma U, Poria P, Finlan A, Parker B, Sharma RS, Mishra V. Iron-dependent mutualism between Chlorella sorokiniana and Ralstonia pickettii forms the basis for a sustainable bioremediation system. ISME COMMUNICATIONS 2022; 2:83. [PMID: 36407791 PMCID: PMC9476460 DOI: 10.1038/s43705-022-00161-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 06/15/2022] [Accepted: 07/14/2022] [Indexed: 01/11/2023]
Abstract
Phototrophic communities of autotrophic microalgae and heterotrophic bacteria perform complex tasks of nutrient acquisition and tackling environmental stress but remain underexplored as a basis for the bioremediation of emerging pollutants. In industrial monoculture designs, poor iron uptake by microalgae limits their productivity and biotechnological efficacy. Iron supplementation is expensive and ineffective because iron remains insoluble in an aqueous medium and is biologically unavailable. However, microalgae develop complex interkingdom associations with siderophore-producing bacteria that help solubilize iron and increase its bioavailability. Using dye degradation as a model, we combined environmental isolations and synthetic ecology as a workflow to design a simplified microbial community based on iron and carbon exchange. We established a mutualism between the previously non-associated alga Chlorella sorokiniana and siderophore-producing bacterium Ralstonia pickettii. Siderophore-mediated increase in iron bioavailability alleviated Fe stress for algae and increased the reductive iron uptake mechanism and bioremediation potential. In exchange, C. sorokiniana produced galactose, glucose, and mannose as major extracellular monosaccharides, supporting bacterial growth. We propose that extracellular iron reduction by ferrireductase is crucial for azoreductase-mediated dye degradation in microalgae. These results demonstrate that iron bioavailability, often overlooked in cultivation, governs microalgal growth, enzymatic processes, and bioremediation potential. Our results suggest that phototrophic communities with an active association for iron and carbon exchange have the potential to overcome challenges associated with micronutrient availability, while scaling up bioremediation designs.
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Affiliation(s)
- Deepak Rawat
- Bioresources & Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi, 110007 India
- Department of Biochemical Engineering, Bernard Katz Building, University College London, Gower Street, London, WC1E 6BT UK
- Department of Environmental Studies, Janki Devi Memorial College, University of Delhi, Delhi, 110060 India
| | - Udita Sharma
- Bioresources & Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi, 110007 India
| | - Pankaj Poria
- Bioresources & Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi, 110007 India
| | - Arran Finlan
- Department of Biochemical Engineering, Bernard Katz Building, University College London, Gower Street, London, WC1E 6BT UK
| | - Brenda Parker
- Department of Biochemical Engineering, Bernard Katz Building, University College London, Gower Street, London, WC1E 6BT UK
| | - Radhey Shyam Sharma
- Bioresources & Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi, 110007 India
- Delhi School of Climate Change & Sustainability, Institute of Eminence, University of Delhi, Delhi, 110007 India
| | - Vandana Mishra
- Bioresources & Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi, 110007 India
- Centre for Interdisciplinary Studies on Mountain & Hill Environment, University of Delhi, Delhi, 110007 India
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Yadav A, Kumar P, Rawat D, Garg S, Mukherjee P, Farooqi F, Roy A, Sundaram S, Sharma RS, Mishra V. Microbial fuel cells for mineralization and decolorization of azo dyes: Recent advances in design and materials. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 826:154038. [PMID: 35202698 DOI: 10.1016/j.scitotenv.2022.154038] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 02/16/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
Microbial fuel cells (MFCs) exhibit tremendous potential in the sustainable management of dye wastewater via degrading azo dyes while generating electricity. The past decade has witnessed advances in MFC configurations and materials; however, comprehensive analyses of design and material and its association with dye degradation and electricity generation are required for their industrial application. MFC models with high efficiency of dye decolorization (96-100%) and a wide variation in power generation (29.4-940 mW/m2) have been reported. However, only 28 out of 104 studies analyzed dye mineralization - a prerequisite to obviate dye toxicity. Consequently, the current review aims to provide an in-depth analysis of MFCs potential in dye degradation and mineralization and evaluates materials and designs as crucial factors. Also, structural and operation parameters critical to large-scale applicability and complete mineralization of azo dye were evaluated. Choice of materials, i.e., bacteria, anode, cathode, cathode catalyst, membrane, and substrate and their effects on power density and dye decolorization efficiency presented in review will help in economic feasibility and MFCs scalability to develop a self-sustainable solution for treating azo dye wastewater.
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Affiliation(s)
- Archana Yadav
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi 110 007, India
| | - Pankaj Kumar
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi 110 007, India
| | - Deepak Rawat
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi 110 007, India; Department of Environmental Studies, Janki Devi Memorial College, University of Delhi, Delhi 110060, India
| | - Shafali Garg
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi 110 007, India
| | - Paromita Mukherjee
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi 110 007, India
| | - Furqan Farooqi
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi 110 007, India
| | - Anurag Roy
- Environment and Sustainability Institute ESI Solar Lab, University of Exeter, Penryn Campus, Penryn, Cornwall TR10 9FE, UK
| | - Senthilarasu Sundaram
- Environment and Sustainability Institute ESI Solar Lab, University of Exeter, Penryn Campus, Penryn, Cornwall TR10 9FE, UK; Electrical & Electronic Engineering, School of Engineering and the Built Environment, Edinburgh Napier University, Edinburgh EH10 5DT, UK
| | - Radhey Shyam Sharma
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi 110 007, India; Delhi School of Climate Change & Sustainability, Institute of Eminence, University of Delhi, Delhi 110007, India
| | - Vandana Mishra
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi 110 007, India.
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Mishra V, Mishra R, Shamra RS. Ribosome inactivating proteins - An unfathomed biomolecule for developing multi-stress tolerant transgenic plants. Int J Biol Macromol 2022; 210:107-122. [PMID: 35525494 DOI: 10.1016/j.ijbiomac.2022.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 04/10/2022] [Accepted: 05/01/2022] [Indexed: 11/15/2022]
Abstract
Transgenic crops would serve as a tool to overcome the forthcoming crisis in food security and environmental safety posed by degrading land and changing global climate. Commercial transgenic crops developed so far focus on single stress; however, sustaining crop yield to ensure food security requires transgenics tolerant to multiple environmental stresses. Here we argue and demonstrate the untapped potential of ribosome inactivating proteins (RIPs), translation inhibitors, as potential transgenes in developing transgenics to combat multiple stresses in the environment. Plant RIPs target the fundamental processes of the cell with very high specificity to the infecting pests. While controlling pathogens, RIPs also cause ectopic expression of pathogenesis-related proteins and trigger systemic acquired resistance. On the other hand, during abiotic stress, RIPs show antioxidant activity and trigger both enzyme-dependent and enzyme-independent metabolic pathways, alleviating abiotic stress such as drought, salinity, temperature, etc. RIPs express in response to specific environmental signals; therefore, their expression obviates additional physiological load on the transgenic plants instead of the constitutive expression. Based on evidence from its biological significance, ecological roles, laboratory- and controlled-environment success of its transgenics, and ethical merits, we unravel the potential of RIPs in developing transgenic plants showing co-tolerance to multiple environmental stresses.
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Affiliation(s)
- Vandana Mishra
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi 110007, India.
| | - Ruchi Mishra
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi 110007, India; Jesus and Mary College, University of Delhi, Chanakyapuri, Delhi 110021, India.
| | - Radhey Shyam Shamra
- Bioresources and Environmental Biotechnology Laboratory, Department of Environmental Studies, University of Delhi, Delhi 110007, India; Delhi School of Climate Change & Sustainability, Institute of Eminence, University of Delhi, Delhi 110007, India.
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Mondal NK, Debnath P. Impact of two commercially available hair dyes on germination, morpho-physiology, and biochemistry of Cicer arietinum L. and cytotoxicity study on Allium cepa L. root tip. ENVIRONMENTAL RESEARCH 2022; 208:112681. [PMID: 35016865 DOI: 10.1016/j.envres.2022.112681] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 12/16/2021] [Accepted: 01/02/2022] [Indexed: 06/14/2023]
Abstract
Contamination of agricultural land and surface water by personal care products and pharmaceutical constituents is a potential environmental threat. The active ingredients of personal care products are life-threatening for users. Present work highlighted the efficacy of the different components of two commercially available hair dyes (synthetic and herbal) on germination, morpho-physiological, biochemical parameters of Cicer arietinum, and cytotoxicity study by Allium cepa root tip. Different treatments such as T1 (control), T2 (cream colour rich), T3 (developer) (The ingredients T2 and T3 are from the same hair dye), T4 (an equal mixture of T2 and T3), and T5 (herbal dye) were considered to run this experiment. The results revealed that all the treatments improve germination with respect to control. Moreover, GSI data suggests that T2 showed the highest germination speed and T3 showed the lowest with respect to other treatments. But root lengths are severely affected by the treatments T3 (100% developer of synthetic hair dye), T4 (an equal mixture of T2 (100% cream colour rich) and T3), and T5 (100% herbal hair dye) with respect to control.T2 also showed the highest root tolerance of all treatments other than control. Similarly, one-way ANOVA results revealed that both fresh weight of roots (p ≤ 0.03) and shoots (p ≤ 0.03) are statistically significant among the different treatments. Moreover, both proline and root ion leakage are higher in the treatment T4 and T5 with respect to control, respectively. On the other hand, the cytotoxicity study highlighted that treatments T3 and T4 showed a higher level of aberration and significantly lower mitotic index compared to treatment T5. Therefore, finally, it may be concluded that both individual and combined forms of ingredients of hair dyes are toxic with respect to cell division and overall plant growth and development.
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Affiliation(s)
- Naba Kumar Mondal
- Environmental Chemistry Laboratory, Department of Environmental Science, The University of Burdwan, West Bengal, India.
| | - Priyanka Debnath
- Environmental Chemistry Laboratory, Department of Environmental Science, The University of Burdwan, West Bengal, India
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Chatterjee T, Dutta B, Khan S, Islam S, Alanazi AM, Wabaidur SM, Alam SM, Mir MH. Exploitation of a Zn(II) paddle wheel metal-organic framework as effective sorbent for the quantitative estimation of cationic and anionic dyes. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120595] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Dynamic Capabilities and Their Impact on Intellectual Capital and Innovation Performance. SUSTAINABILITY 2021. [DOI: 10.3390/su131810028] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
There is a high tendency for conversion from a statistical economy based on measuring tangible assets into investigating non-tangible capital drive in the present economic status worldwide. The implications of intellectual capital on innovation performance have widely attracted attention among researchers in the global arena. The present study investigated the impacts of intellectual capital on innovation performance in the banking sector as influencing non-tangible assets. Besides, the role of dynamic capabilities in moderating the relationship between intellectual capital and innovation performance was examined. A purposive sampling technique was applied to 364 participants from Iraqi commercial banks as the research context. Thereafter, structural equation modelling (SEM) was utilised to analyse the collected data from the survey questionnaire using SPSS.v25 and AMOS.v24. The study found that the employees’ levels of intellectual capital significantly increased toward innovativeness through the moderating role of dynamic capabilities between intellectual capital and innovation performance in the commercial banking sector for better competitive advantages. Consequently, the study provides valuable insights and guidance for academicians and practitioners on the impacts of developing intellectual capital on enhancing competitive performance, especially in the context of Iraqi commercial banks.
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