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Yin X, Wang W, Wang A, He M, Lin C, Ouyang W, Liu X. Microbial community structure and metabolic potential in the coastal sediments around the Yellow River Estuary. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 816:151582. [PMID: 34785215 DOI: 10.1016/j.scitotenv.2021.151582] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 11/05/2021] [Accepted: 11/06/2021] [Indexed: 06/13/2023]
Abstract
The Yellow River Estuary and Laizhou Bay are located on the northern Shandong Peninsula in the Bohai Sea in China and have been polluted by intensive anthropogenic activity. However, few studies have focused on the effect of these activities on the microbial communities and their ecological functions in this area. In this study, the combination of 16S rDNA gene sequencing and GeoChip technology was used to analyzed the microbial community component and their functional genes. Thaumarchaeot and Bacteroidetes are the most abundant phyla. The results of correlation analysis and redundancy analysis (RDA) showed water depth (r2 = 0.76, P = 0.005), total Na content (r2 = 0.63, P = 0.021) and total Ca content (r2 = 0.53, P = 0.05) in the sediments were the most significant environmental factors affecting the microbial community. The diversity of the microbial community and signal intensity of functional genes at nearshore sites (N sites) were higher than that at the offshore sites (O sites), but the component of microbial community and functional genes was similar in general. Functional genes for C, N, P and S cycle were detected at both nearshore and offshore sites, which illustrated that microbial communities were active in nutrient cycle. Proteobacteria contributes significantly to material cycle in microbial community. In addition, functional genes related to organic remediation and metal detoxification are also abundant. It indicated that the environmental pollution caused by anthropogenic activities has greatly affected the microbial community components and their biochemical functions in the Yellow River Estuary and surrounding areas. This study reveals the effect of anthropogenic activities on microbial communities and provides the basis for environmental management.
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Affiliation(s)
- Xiaobo Yin
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Wenting Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Aihua Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Mengchang He
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
| | - Chunye Lin
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Wei Ouyang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Xitao Liu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
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Fulke AB, Kotian A, Giripunje MD. Marine Microbial Response to Heavy Metals: Mechanism, Implications and Future Prospect. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 105:182-197. [PMID: 32596744 DOI: 10.1007/s00128-020-02923-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 06/21/2020] [Indexed: 06/11/2023]
Abstract
Growing levels of pollution in marine environment has been a matter of serious concern in recent years. Increased levels of heavy metals due to improper waste disposal has led to serious repercussions. This has increased occurrences of heavy metals in marine fauna. Marine microbes are large influencers of nutrient cycling and productivity in oceans. Marine bacteria show altered metabolism as a strategy against metal induced stress. Understanding these strategies used to avoid toxic effects of heavy metals can help in devising novel biotechnological applications for ocean clean-up. Using biological tools for remediation has advantages as it does not involve harmful chemicals and it shows greater flexibility to environmental fluctuations. This review provides a comprehensive insight on marine microbial response to heavy metals and sheds light on existing knowledge about and paves for new avenues in research for bioremediation strategies.
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Affiliation(s)
- Abhay B Fulke
- Microbiology Division, CSIR-National Institute of Oceanography (CSIR-NIO), Regional Centre, Lokhandwala Road, Four Bungalows, Andheri (West), Mumbai, Maharashtra, 400053, India.
| | - Atul Kotian
- Microbiology Division, CSIR-National Institute of Oceanography (CSIR-NIO), Regional Centre, Lokhandwala Road, Four Bungalows, Andheri (West), Mumbai, Maharashtra, 400053, India
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D'Costa PM, Kunkolienkar RSS, Naik AG, Naik RK, Roy R. The response of Prorocentrum sigmoides
and its associated culturable bacteria to metals and organic pollutants. J Basic Microbiol 2019; 59:979-991. [DOI: 10.1002/jobm.201900244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/10/2019] [Accepted: 08/10/2019] [Indexed: 01/25/2023]
Affiliation(s)
- Priya M. D'Costa
- Department of Microbiology; Goa University; Taleigao Plateau Goa India
| | | | - Arti G. Naik
- Department of Microbiology; Goa University; Taleigao Plateau Goa India
| | - Ravidas K. Naik
- Southern Ocean Studies; ESSO-National Centre for Polar and Ocean Research; Vasco-da-Gama Goa India
| | - Rajdeep Roy
- National Remote-Sensing Centre-Earth and Climate Science Area; Indian Space Research Organization; Hyderabad Telangana India
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Abu-Dieyeh MH, Alduroobi HM, Al-Ghouti MA. Potential of mercury-tolerant bacteria for bio-uptake of mercury leached from discarded fluorescent lamps. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 237:217-227. [PMID: 30798040 DOI: 10.1016/j.jenvman.2019.02.066] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 01/23/2019] [Accepted: 02/12/2019] [Indexed: 06/09/2023]
Abstract
In this study, ten bacterial strains were found to be mercury resistant after their isolation from Qatari coastal sediments. Tolerance was found to be up to 100-150 ppm for five strains. Those strains had optimum growth conditions at salinity level of 10 ppm NaCl and pH 7-8. Starting from a concentration 7.9 ppm of mercury extracted from fluorescent lamps and after 6 days of incubation at 37 °C, two isolated strains HA6 (Bacillus spp.) and HA9 (Acinetobacter sp.) showed 96.7% and 98.9% of mercury bio-uptake efficiency, respectively. Other strains were capable of removing more than 60% of extracted mercury.
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Affiliation(s)
- Mohammed H Abu-Dieyeh
- Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, P.O. Box: 2713, Doha, Qatar
| | - Haya M Alduroobi
- Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, P.O. Box: 2713, Doha, Qatar
| | - Mohammad A Al-Ghouti
- Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, P.O. Box: 2713, Doha, Qatar.
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Marques CR. Bio-rescue of marine environments: On the track of microbially-based metal/metalloid remediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 565:165-180. [PMID: 27161138 DOI: 10.1016/j.scitotenv.2016.04.119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 04/17/2016] [Accepted: 04/18/2016] [Indexed: 06/05/2023]
Abstract
The recent awareness of the huge relevance of marine resources and ecological services is driving regulatory demands for their protection from overwhelming contaminants, such as metals/metalloids. These contaminants enter and accumulate in different marine niches, hence deeply compromising their quality and integrity. Bioremediation has been flourishing to counteract metal/metalloid impacts, since it provides cost-effective and sustainable options by relying on ecology-based technologies. The potential of marine microbes for metal/metalloid bioremediation is the core of many studies, due to their high plasticity to overcome successive environmental hurdles. However, any thorough review on the advances of metal/metalloid bioremediation in marine environments was so far unveiled. This review is designed to (i) outline the characteristics and potential of marine microbes for metal/metalloid bioremediation, (ii) describe the underlying pathways of resistance and detoxification, as well as useful methodologies for their characterization, (iii) identify major bottlenecks on metal/metalloid bioremediation with marine microbes, (iv) present alternative strategies based on microbial consortia and engineered microbes for enhanced bioremediation, and (v) propose key research avenues to keep pace with a changing society, science and economy in a sustainable manner.
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Affiliation(s)
- Catarina R Marques
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
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Genetic basis and importance of metal resistant genes in bacteria for bioremediation of contaminated environments with toxic metal pollutants. Appl Microbiol Biotechnol 2016; 100:2967-84. [PMID: 26860944 DOI: 10.1007/s00253-016-7364-4] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 01/26/2016] [Accepted: 01/28/2016] [Indexed: 10/22/2022]
Abstract
Metal pollution is one of the most persistent and complex environmental issues, causing threat to the ecosystem and human health. On exposure to several toxic metals such as arsenic, cadmium, chromium, copper, lead, and mercury, several bacteria has evolved with many metal-resistant genes as a means of their adaptation. These genes can be further exploited for bioremediation of the metal-contaminated environments. Many operon-clustered metal-resistant genes such as cadB, chrA, copAB, pbrA, merA, and NiCoT have been reported in bacterial systems for cadmium, chromium, copper, lead, mercury, and nickel resistance and detoxification, respectively. The field of environmental bioremediation has been ameliorated by exploiting diverse bacterial detoxification genes. Genetic engineering integrated with bioremediation assists in manipulation of bacterial genome which can enhance toxic metal detoxification that is not usually performed by normal bacteria. These techniques include genetic engineering with single genes or operons, pathway construction, and alternations of the sequences of existing genes. However, numerous facets of bacterial novel metal-resistant genes are yet to be explored for application in microbial bioremediation practices. This review describes the role of bacteria and their adaptive mechanisms for toxic metal detoxification and restoration of contaminated sites.
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De J, Leonhäuser J, Vardanyan L. Removal of mercury in fixed-bed continuous upflow reactors by mercury-resistant bacteria and effect of sodium chloride on their performance. QSCIENCE CONNECT 2014. [DOI: 10.5339/connect.2014.17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- Jaysankar De
- 1National Institute of Oceanography, Dona Paula, Goa 403004, India
- 2Division of Microbiology, German Research Centre for Biotechnology, Mascheroder Weg 1, 38124 Braunschweig, Germany
- 4UNESCO Chair-Life Sciences International Postgraduate Educational Center. Acharian 31, Yerevan 0040, Armenia
| | - Johannes Leonhäuser
- 2Division of Microbiology, German Research Centre for Biotechnology, Mascheroder Weg 1, 38124 Braunschweig, Germany
- 5Bayer Technology Services GmbH; PT-PT-Environmental & Solids Processing Building E 41; 51368 Leverkusen, Germany
| | - Lilit Vardanyan
- 3Vanevan Institute, 14 Yerevanyan Street, Martuni, Gegharkunik, Armenia
- 4UNESCO Chair-Life Sciences International Postgraduate Educational Center. Acharian 31, Yerevan 0040, Armenia
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Naik MM, Dubey SK. Lead resistant bacteria: lead resistance mechanisms, their applications in lead bioremediation and biomonitoring. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2013; 98:1-7. [PMID: 24144999 DOI: 10.1016/j.ecoenv.2013.09.039] [Citation(s) in RCA: 135] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 09/22/2013] [Accepted: 09/25/2013] [Indexed: 05/25/2023]
Abstract
Lead (Pb) is non-bioessential, persistent and hazardous heavy metal pollutant of environmental concern. Bioremediation has become a potential alternative to the existing technologies for the removal and/or recovery of toxic lead from waste waters before releasing it into natural water bodies for environmental safety. To our best knowledge, this is a first review presenting different mechanisms employed by lead resistant bacteria to resist high levels of lead and their applications in cost effective and eco-friendly ways of lead bioremediation and biomonitoring. Various lead resistant mechanisms employed by lead resistant bacteria includes efflux mechanism, extracellular sequestration, biosorption, precipitation, alteration in cell morphology, enhanced siderophore production and intracellular lead bioaccumulation.
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Affiliation(s)
- Milind Mohan Naik
- Department of Microbiology, Goa University, Laboratory of Bacterial Genetics and Environmental Biotechnology, Taleigao Plateau, Goa 403206, India.
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Ohko Y, Nagao Y, Okano K, Sugiura N, Fukuda A, Yang Y, Negishi N, Takeuchi M, Hanada S. Prevention of Phormidium tenue Biofilm Formation by TiO(2) Photocatalysis. Microbes Environ 2012; 24:241-5. [PMID: 21566379 DOI: 10.1264/jsme2.me09106] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We showed that the photocatalytic effect of a coating of TiO(2) greatly reduces the formation of a biofilm by Phormidium tenue (P. tenue), a filamentous cyanobacterium, on glass plates. Sample plates were immersed in P. tenue culture solution (OD(730)=0.3) under concurrent illumination with white fluorescent (WF) and UV light (0.3 mW cm(-2), each) for 11 days. TiO(2)-coated glass plates showed greatly reduced adhesion of P. tenue over 11 days compared to bare plates. The number of P. tenue adhering to bare glass plates increased to over 10(6) cells cm(-2) in 6 days. The photocatalytic anti-biofilm effect was also observed under WF light, although it was small and lasted only a few days. The addition of 1 mM mannitol, a scavenger for the hydroxyl radical (·OH), suppressed the effect. The surface of TiO(2)-coated plates was maintained in a highly hydrophilic state for 11 days, regardless of the addition of mannitol. Therefore, we conclude that the photocatalytic oxidation of P. tenue is effective in preventing the formation of a biofilm.
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Affiliation(s)
- Yoshihisa Ohko
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST)
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Ghoshal S, Bhattacharya P, Chowdhury R. De-mercurization of wastewater by Bacillus cereus (JUBT1): growth kinetics, biofilm reactor study and field emission scanning electron microscopic analysis. JOURNAL OF HAZARDOUS MATERIALS 2011; 194:355-361. [PMID: 21872987 DOI: 10.1016/j.jhazmat.2011.07.109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 07/13/2011] [Accepted: 07/29/2011] [Indexed: 05/31/2023]
Abstract
Removal of mercuric ions by a mercury resistant bacteria, called Bacillus cereus (JUBT1), isolated from the sludge of a local chlor-alkali industry, has been investigated. Growth kinetics of the bacteria have been determined. A multiplicative, non-competitive relationship between sucrose and mercury ions has been observed with respect to bacterial growth. A combination of biofilm reactor, using attached growth of Bacillus cereus (JUBT1) on rice husk packing, and an activated carbon filter has been able to ensure the removal of mercury up to near-zero level. Energy dispersive spectrometry analysis of biofilm and the activated carbon has proved the transformation of Hg(2+) to Hg(0) and its confinement in the system.
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Affiliation(s)
- Sanjukta Ghoshal
- Chemical Engineering Department, Jadavpur University Kolkata 700 032, West Bengal, India
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Carvalho G, Almeida B, Fradinho J, Oehmen A, Reis MAM, Crespo MTB. Microbial characterization of mercury-reducing mixed cultures enriched with different carbon sources. Microbes Environ 2011; 26:293-300. [PMID: 21685715 DOI: 10.1264/jsme2.me11112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The use of mixed microbial cultures enriched for biological mercury removal is explored in this paper, focusing on the ecological shifts occurring throughout acclimatization to mercury and on the long-term stability of four microbial enrichments. The 16S rRNA genetic profiles obtained by denaturing gradient gel electrophoresis (DGGE) revealed that the glucose and ethanol cultures had similar profiles, whereas the acetate cultures diverged into a totally dissimilar cluster. Quantification of the merA gene copies in each enrichment showed higher values for the glucose culture, followed by the ethanol and then the acetate cultures, which was consistent with the mercury removal performance throughout the study. Isolates were obtained from the four cultures and analyzed with respect to their genetic (16S rRNA) and functional (merA) phylogenies in order to identify mercury-resistant species enriched with different carbon sources. All mercury-resistant isolates obtained from the glucose and ethanol cultures belonged to the Gammaproteobacteria, whereas acetate cultures also contained members of other phyla, with differences in merA sequences. Higher phylogenetic than functional diversity of the isolates, together with increasing merA copies even after culture stabilisation, highlight the role of horizontal gene transfer in the acclimatization process.
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Affiliation(s)
- Gilda Carvalho
- Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal.
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Nagvenkar GS, Ramaiah N. Arsenite tolerance and biotransformation potential in estuarine bacteria. ECOTOXICOLOGY (LONDON, ENGLAND) 2010; 19:604-613. [PMID: 19834801 DOI: 10.1007/s10646-009-0429-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2009] [Accepted: 10/05/2009] [Indexed: 05/28/2023]
Abstract
Bacterial isolates from water and sediment samples from freshwater, estuarine and marine regions were tested for their growth in the presence of different concentrations of arsenic. Despite the generation times being longer in case of all bacterial isolates tested in nutrient broth with 200 ppm Arsenite (As(3+)), many of them were able to attain log phase and substantial growth variously between 36 and 96 h. The isolates tolerating >or=200 ppm arsenic (As) were found to belong to Enterobacteriaceae, Pseudomonas, Corynebaterium, Xanthomonas, Acinetobacter, Flavimonas and Micrococcus. Some of these environmental strains tolerant to 1,000 ppm arsenic were tested to realize their potential to detoxify arsenic. The rate of As biotransformation was faster by many of these strains. The percent of arsenite biotransformed/removed from the growth medium was the highest by a strain of Enterobacteriaceae (as much as 92% of the As in the growth medium by 120 h) followed by that of Corynebaterium and Acinetobacter strains. From these observations it is clear that many environmental strains are capable of quite rapid biotransformation of As. Contamination of drinking water by toxic metalloid arsenic affects thousands of people worldwide. Many environmental isolates of bacteria which detoxify this metalloid would serve beneficial in the depuration processes. We suggest that only such strains capable of high tolerance to toxic arsenite, would biotransform As in polluted estuarine environments and would prove useful in As bioremediation applications.
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Affiliation(s)
- Geeta S Nagvenkar
- National Institute of Oceanography, Council of Scientific and Industrial Research (CSIR), Dona Paula, Goa, 403004, India
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