1
|
Maksimova Y, Zorina A, Nesterova L. Oxidative Stress Response and E. coli Biofilm Formation under the Effect of Pristine and Modified Carbon Nanotubes. Microorganisms 2023; 11:1221. [PMID: 37317195 DOI: 10.3390/microorganisms11051221] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/30/2023] [Accepted: 05/04/2023] [Indexed: 06/16/2023] Open
Abstract
The article investigates the expression of oxyR and soxS oxidative stress genes in E. coli under the effect of pristine multi-walled carbon nanotubes (MWCNTs) and pristine single-walled carbon nanotubes (SWCNTs), MWCNTs and SWCNTs functionalized with carboxyl groups (MWCNTs-COOH and SWCNTs-COOH, respectively), SWCNTs functionalized with amino groups (SWCNTs-NH2) and SWCNTs functionalized with octadecylamine (SWCNTs-ODA). Significant differences were found in the expression of the soxS gene, while no changes were observed in the expression level of the oxyR gene. The pro-oxidant effect of SWCNTs, SWCNTs-COOH, SWCNTs-NH2, and SWCNTs-ODA is presented, and the contrary antioxidant effect of pristine MWCNTs and MWCNTs-COOH in the presence of methyl viologen hydrate (paraquat) is shown. The article shows that SWCNTs-COOH, SWCNTs-NH2, and SWCNTs-ODA added to the medium generate the production of reactive oxygen species (ROS) in bacterial cells. SWCNTs-COOH intensified the E. coli biofilm formation, and the biofilm biomass exceeded the control by 25 times. Additionally, it is shown that the rpoS expression increased in response to MWCNTs-COOH and SWCNTs-COOH, and the effect of SWCNTs-COOH was more significant. SWCNTs-COOH and SWCNTs-NH2 initiated an increase in ATP concentration in the planktonic cells and a decrease in the biofilm cells. The atomic force microscopy (AFM) method showed that the volume of E. coli planktonic cells after the exposure to carbon nanotubes (CNTs) decreased compared to that without exposure, mainly due to a decrease in cell height. The absence of a strong damaging effect of functionalized SWCNTs on E. coli K12 cells, both in suspension and in biofilms, is shown. Contact with functionalized SWCNTs initiated the aggregation of the polymeric substances of the biofilms; however, the cells did not lyse. Among the studied CNTs, SWCNTs-COOH caused an increased expression of the soxS and rpoS, the formation of ROS, and stimulation of the biofilm formation.
Collapse
Affiliation(s)
- Yuliya Maksimova
- Laboratory of Molecular Biotechnology, Institute of Ecology and Genetics of Microorganisms UB RAS, 614081 Perm, Russia
- Department of Microbiology and Immunology, Perm State University, 614990 Perm, Russia
| | - Anastasiya Zorina
- Laboratory of Molecular Biotechnology, Institute of Ecology and Genetics of Microorganisms UB RAS, 614081 Perm, Russia
| | - Larisa Nesterova
- Laboratory of Adaptation of Microorganisms, Institute of Ecology and Genetics of Microorganisms UB RAS, 614081 Perm, Russia
- Department of Plant Physiology and Soil Ecology, Perm State University, 614990 Perm, Russia
| |
Collapse
|
2
|
Babushkina IV, Mamonova IA, Ulyanov VY, Shpinyak SP. Combined Effect of Ceftriaxon and Low-Frequency Ultrasound on the Viability of Staphylococcus epidermidis Cells in a Preformed Biofilm. Bull Exp Biol Med 2022; 174:47-50. [PMID: 36437322 DOI: 10.1007/s10517-022-05646-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Indexed: 11/29/2022]
Abstract
We studied the effect of low-frequency ultrasound on the antibacterial effect of ceftriaxone for Staphylococcus epidermidis strains isolated from biomaterial of patients with paraimplant inflammation after total replacement of large joints in the plankton and preformed biofilm forms. Low-frequency ultrasound had no antibacterial effect on the plankton S. epidermidis culture or bacterial cells in the biofilm, and combined exposure of the plankton culture to ultrasound and ceftriaxone did not modulate the antibacterial activity of ceftriaxone. The exposure of the biofilm formed by S. epidermidis strains to low-frequency ultrasound increased the sensitivity of bacterial cells to ceftriaxone in a concentration range of 5-200 μg/ml.
Collapse
Affiliation(s)
- I V Babushkina
- Research Institute of Traumatology, Orthopedics and Neurosurgery, V. I. Razumovsky Saratov State Medical University, Ministry of Health of the Russian Federation, Saratov, Russia.
| | - I A Mamonova
- Research Institute of Traumatology, Orthopedics and Neurosurgery, V. I. Razumovsky Saratov State Medical University, Ministry of Health of the Russian Federation, Saratov, Russia
| | - V Yu Ulyanov
- Research Institute of Traumatology, Orthopedics and Neurosurgery, V. I. Razumovsky Saratov State Medical University, Ministry of Health of the Russian Federation, Saratov, Russia
| | - S P Shpinyak
- Research Institute of Traumatology, Orthopedics and Neurosurgery, V. I. Razumovsky Saratov State Medical University, Ministry of Health of the Russian Federation, Saratov, Russia
| |
Collapse
|
3
|
Qin Z, Zhao Z, Xia L, Ohore OE. Unraveling the ecological mechanisms of bacterial succession in epiphytic biofilms on Vallisneria natans and Hydrilla verticillata during bioremediation of phenanthrene and pyrene polluted wetland. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 321:115986. [PMID: 35998537 DOI: 10.1016/j.jenvman.2022.115986] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 07/27/2022] [Accepted: 08/07/2022] [Indexed: 06/15/2023]
Abstract
In wetland ecosystem, the microbial succession in epiphytic biofilms of submerged macrophytes remains to be fully elucidated, especially submerged macrophytes used to remediate organic pollutants contaminated sediment. Herein, 16 S rRNA gene sequencing was used to investigate the bacterial dynamics and ecological processes in the biofilms of two typical submerged macrophytes (Vallisneria natans and Hydrilla verticillata) settled in sediment polluted by polycyclic aromatic hydrocarbons (PAHs) at two growth periods. The results presented that the variations of bacterial community in the biofilms were influenced by attached surfaces (explanation ratio: 17.30%), incubation time (32.30%) and environmental factors (39.10%). Bacterial community assembly was mainly driven by dispersal limitation which triggered more positive co-occurrence associations in microbial networks, maintaining ecological stability in the process of bioremediation of PAHs. Additionally, the functional redundancy strength of bacterial community was more affected by attached surface than incubation time. The structural equation model illustrated that community assembly drove β-diversity and explained a part of ecological functions. Environmental factors, community assembly, and β-diversity jointly affected microbial networks. Overall, our study offers new insights into the microbial ecology in biofilms attached on the submerged macrophytes settled in PAH-polluted sediment, providing important information for deeply understanding submerged macrophyte-biofilm complex and promoting sustainable phytoremediation in shallow lacustrine and marshy ecosystems.
Collapse
Affiliation(s)
- Zhirui Qin
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China.
| | - Zhenhua Zhao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China; Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI, 48824, USA.
| | - Liling Xia
- Nanjing Vocational University of Industry Technology, Nanjing, 210016, China
| | - Okugbe Ebiotubo Ohore
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China; Organization of African Academic Doctors, Off Kamiti Road P.O. Box 25305-00100, Nairobi, Kenya
| |
Collapse
|
4
|
Liu Y, Tian B, Xiao R, Li Y, Li Z, Cui L, Li Z, Liang H. The bio-activation of pozzolanic activity of circulating fluidized-bed fly ash by Paenibacilllus mucilaginosus. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
|
5
|
Shapiro TN, Lobakova ES, Dolnikova GA, Ivanova EA, Sandzhieva DA, Burova AA, Dzhabrailova KS, Dedov AG. Community of Hydrocarbon-Oxidizing Bacteria in Petroleum Products on the Example of TS-1 Jet Fuel and AI-95 Gasoline. APPL BIOCHEM MICRO+ 2021. [DOI: 10.1134/s0003683821090076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
6
|
Burtseva O, Baulina O, Zaytseva A, Fedorenko T, Chekanov K, Lobakova E. In vitro Biofilm Formation by Bioluminescent Bacteria Isolated from the Marine Fish Gut. MICROBIAL ECOLOGY 2021; 81:932-940. [PMID: 33247364 DOI: 10.1007/s00248-020-01652-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
The internal surface of the animal gastrointestinal tract is covered by microbial biofilms. They play an important role in the development and functioning of the host organism and protect it against pathogens. Microbial communities of gastrointestinal biofilms are less elucidated than luminal microbiota. Therefore, the studies of biofilm formation by gastrointestinal microorganisms are a topical issue. For the first time, we report the formation of a biofilm in vitro by the strains of bioluminescent bacteria isolated from the intestines of marine fish. These bacteria exhibit co-aggregation and tend to attach to solid surfaces. The attachment of cells is accompanied by appearance of the pili. Then, we observed the formation of microcolonies and the production of extracellular polymer substances (EPSs) connecting bacterial cells into an integrated system. The presence of acidic polysaccharides is shown in the EPS when using the ruthenium red staining. Acidic polysaccharides in this matrix is a biochemical evidence of microbial biofilms. On the fibers of the polymer matrix, these bacteria form the "mushroom body"-type structures. Matured biofilms exhibit a specific three-dimensional architecture with pores and channels formed by cells and EPS. We also demonstrated the formation of a biofilm by binary culture of the luminous enterobacterium Kosakonia cowanii and a Gram-positive Macrococcus sp. The data obtained help to understand the role of these bacteria in the intestines of fish. They lead to a new study in the field of investigation of the intestinal microbiome of fish.
Collapse
Affiliation(s)
- Olga Burtseva
- Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Olga Baulina
- Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Anna Zaytseva
- Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Tatiana Fedorenko
- Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Konstantin Chekanov
- Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia.
- National Research Nuclear University MEPhi, Centre for Humanities Research and Technology, Moscow, Russia.
| | - Elena Lobakova
- Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| |
Collapse
|
7
|
Sharipova MR, Mardanova AM, Rudakova NL, Pudova DS. Bistability and Formation of the Biofilm Matrix as Adaptive Mechanisms during the Stationary Phase of Bacillus subtilis. Microbiology (Reading) 2021. [DOI: 10.1134/s002626172006017x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
|
8
|
Lyu Y, Yu J, Guo M, Wang K, Yu Z, Zhang L, Zhang Y, Chen L. New insights into interaction of proteins in extracellular polymeric substances of activated sludge with ciprofloxacin using quartz crystal microbalance with dissipation. CHEMOSPHERE 2021; 263:128044. [PMID: 33297059 DOI: 10.1016/j.chemosphere.2020.128044] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/27/2020] [Accepted: 08/16/2020] [Indexed: 06/12/2023]
Abstract
Proteins in extracellular polymeric substances play a vital role in adsorbing organic contaminants in biological wastewater treatment processes, but there is still lack of a fast and effective approach to monitor their interaction. Quartz crystal microbalance with dissipation (QCM-D) was used to investigate the binding and viscoelastic properties of ciprofloxacin (CIP) on extracellular proteins from activated sludge by a two-step sequential deposition method. A saturated viscoelastic monolayer of proteins was formed on the crystal by injecting 500 mg L-1 extracellular proteins. Binding of CIP with the extracellular proteins film followed the pseudo-first-order kinetic equation and Langmuir model, with the maximum binding capacity of 172.4 mg g-1. The binding mass, energy dissipation, and reaction rate constant increased with increasing CIP concentration. A strong binding was obtained at pH 5, suggesting electrostatic interactions as the dominating binding mechanism. Cations inhibited CIP binding with extracellular proteins, probably due to cations competition. Two binding periods were distinguished according to the viscoelastic properties of CIP layer: viscous binding in the initial period and elastic towards binding saturation. Results highlighted QCM-D as an effective and real-time technique to evaluate the role of extracellular proteins in contaminants removal.
Collapse
Affiliation(s)
- Yang Lyu
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China
| | - Jie Yu
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China.
| | - Minhui Guo
- Department of Environmental Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Kan Wang
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China
| | - Zhenxun Yu
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China
| | - Lingxiao Zhang
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China
| | - Ying Zhang
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China
| | - Leilei Chen
- Department of Civil and Environmental Engineering, Ningbo University, Ningbo, 315211, China
| |
Collapse
|
9
|
Kublanovskaya A, Baulina O, Chekanov K, Lobakova E. The microalga Haematococcus lacustris (Chlorophyceae) forms natural biofilms in supralittoral White Sea coastal rock ponds. PLANTA 2020; 252:37. [PMID: 32778946 DOI: 10.1007/s00425-020-03438-7] [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: 04/28/2020] [Accepted: 07/29/2020] [Indexed: 06/11/2023]
Abstract
Haematococcus lacustris inhabits supralittoral rock ponds and forms, under natural conditions, biofilms including layered cyanobacterial and fermentative microbial mats. Dry mats, formed under extremely stressful conditions, contained only haematocysts. Under favorable growth conditions, modeled for dry biofilms in vitro, microalgal free-living stages were detected. Haematococcus lacustris is the microalga known for its high potential to survive under a wide range of unfavorable conditions, particularly in the supralittoral temporal rock ponds of the White Sea. Previously, we described microbial communities containing H. lacustris in this region. In many cases, they were organized into systems exhibiting complex three-dimensional structure similar to that of natural biofilms. In this study, for the first time, we clarify structural description and provide microscopic evidence that these communities of H. lacustris and bacteria are assembled into the true biofilms. There are (1) simple single layer biofilms on the surface of rocks and macrophytic algae, (2) floccules (or flocs) not attached to a surface, (3) as well as stratified (layered) biofilms, wet, and dehydrated in nature. Being involved into primary organic production, H. lacustris and cyanobacteria are located exclusively in the upper layers of stratified biofilms, where they are capable to absorb sufficient for photosynthesis amount of light. The presence of acidic polysaccharides in the extracellular matrix revealed by specific staining with ruthenium red in the H. lacustris-containing microbial communities is a biochemical evidence of biofilm formation. Meanwhile, the presence of bacterial L-form is an ultrastructural confirmation of that fact. Under favorable conditions, modeled in vitro, H. lacustris from the dry microbial mats moves to the free-living states represented by vegetative palmelloid cells and motile zoospores. Owing to the fact that inside biofilms cells of microorganisms exist under stable conditions, we consider the biofilm formation as an additional mechanism that contributes to the survival of H. lacustris in the supralittoral zone of the White Sea.
Collapse
Affiliation(s)
- Anna Kublanovskaya
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119192, Russia.
| | - Olga Baulina
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119192, Russia
| | - Konstantin Chekanov
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119192, Russia
- Centre for Humanities Research and Technology, National Research Nuclear University MEPhI, 31 Kashirskoye highway, Moscow, 115522, Russia
| | - Elena Lobakova
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119192, Russia
| |
Collapse
|
10
|
Fernandez M, Paulucci NS, Reynoso E, Morales GM, Agostini E, González PS. Morphological and structural response of Bacillus sp. SFC 500-1E after Cr(VI) and phenol treatment. J Basic Microbiol 2020; 60:679-690. [PMID: 32378234 DOI: 10.1002/jobm.202000076] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/04/2020] [Accepted: 04/22/2020] [Indexed: 11/10/2022]
Abstract
Bacillus sp. SFC 500-1E, a bacterial strain isolated from tannery sediments, is able to remove Cr(VI) and simultaneously tolerate high concentrations of phenol. In this study, we used high-resolution microscopies, fluorescence polarization techniques, and several biochemical approaches to improve our understanding about the adaptive mechanisms of this strain to survive in the presence of Cr(VI) and phenol, both individually and simultaneously. Among adaptive strategies developed by Bacillus sp. SFC 500-1E, an increase in bacterial size, such as length, width, and height, and ultrastructural alterations, such as electron-dense precipitates, the presence of exopolymers, and cell lysis, are noteworthy. The exopolymers observed were consistent with the extensive biofilm formation and exopolysaccharides and extracellular protein quantification. At the cell membrane level, a rapid rigidity was induced in Cr(VI) + phenol treatment. This effect was counteracted after 16 h by changes at the level of phospholipids, mainly in the composition of fatty acids (FAs); in particular, an increase in the unsaturated fatty acid/saturated fatty acid ratio was detected. This study shows evidence of some adaptive responses displayed by Bacillus sp. SFC 500-1E, which allows it to survive in stressful conditions.
Collapse
Affiliation(s)
- Marilina Fernandez
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba, Argentina.,CONICET-UNRC, Instituto de Biotecnología Ambiental y Salud (INBIAS), Río Cuarto, Córdoba, Argentina
| | - Natalia S Paulucci
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba, Argentina.,CONICET-UNRC, Instituto de Biotecnología Ambiental y Salud (INBIAS), Río Cuarto, Córdoba, Argentina
| | - Eugenia Reynoso
- Departamento de Química- FCEFQyN, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba, Argentina.,CONICET-UNRC, Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA), Río Cuarto, Córdoba, Argentina
| | - Gustavo M Morales
- Departamento de Química- FCEFQyN, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba, Argentina.,CONICET-UNRC, Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados (IITEMA), Río Cuarto, Córdoba, Argentina
| | - Elizabeth Agostini
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba, Argentina.,CONICET-UNRC, Instituto de Biotecnología Ambiental y Salud (INBIAS), Río Cuarto, Córdoba, Argentina
| | - Paola S González
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba, Argentina.,CONICET-UNRC, Instituto de Biotecnología Ambiental y Salud (INBIAS), Río Cuarto, Córdoba, Argentina
| |
Collapse
|
11
|
Zhurina MV, Gannesen AV, Martyanov SV, Plakunov VK. Express Method for Determining the Relation between Polyethylene Biocorrosion by Chromobacterium violaceum Biofilms and Their Ability to Form Extracellular Matrix. Microbiology (Reading) 2020. [DOI: 10.1134/s0026261720010178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
|
12
|
Plakunov VK, Zhurina MV, Gannesen AV, Mart’yanov SV, Nikolaev YA. Antibiofilm Agents: Therminological Ambiguity and Strategy for Search. Microbiology (Reading) 2020. [DOI: 10.1134/s0026261719060146] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
13
|
The Impact of Alkaliphilic Biofilm Formation on the Release and Retention of Carbon Isotopes from Nuclear Reactor Graphite. Sci Rep 2018. [PMID: 29535412 PMCID: PMC5849744 DOI: 10.1038/s41598-018-22833-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
14C is an important consideration within safety assessments for proposed geological disposal facilities for radioactive wastes, since it is capable of re-entering the biosphere through the generation of 14C bearing gases. The irradiation of graphite moderators in the UK gas-cooled nuclear power stations has led to the generation of a significant volume of 14C-containing intermediate level wastes. Some of this 14C is present as a carbonaceous deposit on channel wall surfaces. Within this study, the potential of biofilm growth upon irradiated and 13C doped graphite at alkaline pH was investigated. Complex biofilms were established on both active and simulant samples. High throughput sequencing showed the biofilms to be dominated by Alcaligenes sp at pH 9.5 and Dietzia sp at pH 11.0. Surface characterisation revealed that the biofilms were limited to growth upon the graphite surface with no penetration of the deeper porosity. Biofilm formation resulted in the generation of a low porosity surface layer without the removal or modification of the surface deposits or the release of the associated 14C/13C. Our results indicated that biofilm formation upon irradiated graphite is likely to occur at the pH values studied, without any additional release of the associated 14C.
Collapse
|
14
|
Fernández M, Morales GM, Agostini E, González PS. An approach to study ultrastructural changes and adaptive strategies displayed by Acinetobacter guillouiae SFC 500-1A under simultaneous Cr(VI) and phenol treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:20390-20400. [PMID: 28707241 DOI: 10.1007/s11356-017-9682-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 06/29/2017] [Indexed: 06/07/2023]
Abstract
Acinetobacter guillouiae SFC 500-1A, a native bacterial strain isolated from tannery sediments, is able to simultaneously remove high concentrations of Cr(VI) and phenol. In this complementary study, high-resolution microscopy techniques, such as atomic force microscopy (AFM) and transmission electron microscopy (TEM), were used to improve our understanding of some bacterial adaptive mechanisms that enhance their ability to survive. AFM contributed in gaining insight into changes in bacterial size and morphology. It allowed the unambiguous identification of pollutant-induced cellular disturbances and the visualization of bacterial cells with depth sensitivity. TEM analysis revealed that Cr(VI) produced changes mainly at the intracellular level, whereas phenol produced alterations at the membrane level. This strain tended to form more extensive biofilms after phenol treatment, which was consistent with microscopy images and the production of exopolysaccharides (EPSs). In addition, other exopolymeric substances (DNA, proteins) significantly increased under Cr(VI) and phenol treatment. These exopolymers are important for biofilm formation playing a key role in bacterial aggregate stability, being especially useful for bioremediation of environmental pollutants. This study yields the first direct evidences of a range of different changes in A. guillouiae SFC 500-1A which seems to be adaptive strategies to survive in stressful conditions.
Collapse
Affiliation(s)
- Marilina Fernández
- Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto (UNRC), Ruta 36 Km 601, 5800, Río Cuarto, Córdoba, Argentina
| | - Gustavo M Morales
- Departamento de Química-FCEFQyN, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina
| | - Elizabeth Agostini
- Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto (UNRC), Ruta 36 Km 601, 5800, Río Cuarto, Córdoba, Argentina
| | - Paola S González
- Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto (UNRC), Ruta 36 Km 601, 5800, Río Cuarto, Córdoba, Argentina.
| |
Collapse
|
15
|
Zhurina MV, Gannesen AV, Mart’yanov SV, Teteneva NA, Shtratnikova VY, Plakunov VK. Niclosamide as a promising antibiofilm agent. Microbiology (Reading) 2017. [DOI: 10.1134/s0026261717040154] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
16
|
Plakunov VK, Mart’yanov SV, Teteneva NA, Zhurina MV. Controlling of microbial biofilms formation: Anti- and probiofilm agents. Microbiology (Reading) 2017. [DOI: 10.1134/s0026261717040129] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
|
17
|
Sena-Vélez M, Redondo C, Graham JH, Cubero J. Presence of Extracellular DNA during Biofilm Formation by Xanthomonas citri subsp. citri Strains with Different Host Range. PLoS One 2016; 11:e0156695. [PMID: 27248687 PMCID: PMC4889101 DOI: 10.1371/journal.pone.0156695] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 05/18/2016] [Indexed: 12/23/2022] Open
Abstract
Xanthomonas citri subsp. citri (Xcc) A strain causes citrus bacterial canker, a serious leaf, fruit and stem spotting disease of several Citrus species. X. alfalfae subsp. citrumelonis (Xac) is the cause of citrus bacterial spot, a minor disease of citrus nursery plants and X. campestris pv. campestris (Xc) is a systemic pathogen that causes black rot of cabbage. Xanthomonas spp. form biofilms in planta that facilitate the host infection process. Herein, the role of extracellular DNA (eDNA) was evaluated in the formation and stabilization of the biofilm matrix at different stages of biofilm development. Fluorescence and light microscopy, as well as DNAse treatments, were used to determine the presence of eDNA in biofilms and bacterial cultures. DNAse treatments of Xcc strains and Xac reduced biofilm formation at the initial stage of development, as well as disrupted preformed biofilm. By comparison, no significant effect of the DNAse was detected for biofilm formation by Xc. DNAse effects on biofilm formation or disruption varied among Xcc strains and Xanthomonas species which suggest different roles for eDNA. Variation in the structure of fibers containing eDNA in biofilms, bacterial cultures, and in twitching motility was also visualized by microscopy. The proposed roles for eDNA are as an adhesin in the early stages of biofilm formation, as an structural component of mature bacterial aggregates, and twitching motility structures.
Collapse
Affiliation(s)
- Marta Sena-Vélez
- Department of Plant Protection, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Madrid, Spain
| | - Cristina Redondo
- Department of Plant Protection, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Madrid, Spain
| | - James H. Graham
- Citrus Research and Education Center (CREC), University of Florida, Lake Alfred, Florida, United States of America
| | - Jaime Cubero
- Department of Plant Protection, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Madrid, Spain
| |
Collapse
|
18
|
Nozhevnikova AN, Botchkova EA, Plakunov VK. Multi-species biofilms in ecology, medicine, and biotechnology. Microbiology (Reading) 2015. [DOI: 10.1134/s0026261715060107] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
19
|
Kondratyeva LM, Litvinenko ZN. Biofilm formation by groundwater microbial complexes in vitro. APPL BIOCHEM MICRO+ 2015. [DOI: 10.1134/s0003683815090057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
20
|
Santini TC, Kerr JL, Warren LA. Microbially-driven strategies for bioremediation of bauxite residue. JOURNAL OF HAZARDOUS MATERIALS 2015; 293:131-157. [PMID: 25867516 DOI: 10.1016/j.jhazmat.2015.03.024] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 02/12/2015] [Accepted: 03/12/2015] [Indexed: 06/04/2023]
Abstract
Globally, 3 Gt of bauxite residue is currently in storage, with an additional 120 Mt generated every year. Bauxite residue is an alkaline, saline, sodic, massive, and fine grained material with little organic carbon or plant nutrients. To date, remediation of bauxite residue has focused on the use of chemical and physical amendments to address high pH, high salinity, and poor drainage and aeration. No studies to date have evaluated the potential for microbial communities to contribute to remediation as part of a combined approach integrating chemical, physical, and biological amendments. This review considers natural alkaline, saline environments that present similar challenges for microbial survival and evaluates candidate microorganisms that are both adapted for survival in these environments and have the capacity to carry out beneficial metabolisms in bauxite residue. Fermentation, sulfur oxidation, and extracellular polymeric substance production emerge as promising pathways for bioremediation whether employed individually or in combination. A combination of bioaugmentation (addition of inocula from other alkaline, saline environments) and biostimulation (addition of nutrients to promote microbial growth and activity) of the native community in bauxite residue is recommended as the approach most likely to be successful in promoting bioremediation of bauxite residue.
Collapse
Affiliation(s)
- Talitha C Santini
- Centre for Mined Land Rehabilitation, Sir James Foots Building, The University of Queensland, St. Lucia, QLD 4072, Australia; School of Geography, Planning, and Environmental Management, Steele Building, The University of Queensland, St. Lucia, QLD 4072, Australia; School of Earth and Environment, The University of Western Australia, 35 Stirling Hwy Crawley, WA 6009, Australia.
| | - Janice L Kerr
- Centre for Mined Land Rehabilitation, Sir James Foots Building, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Lesley A Warren
- School of Geography and Earth Sciences, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4K1, Canada
| |
Collapse
|
21
|
Gannesen AV, Zhurina MV, Veselova MA, Khmel’ IA, Plakunov VK. Regulation of biofilm formation by Pseudomonas chlororaphis in an in vitro system. Microbiology (Reading) 2015. [DOI: 10.1134/s0026261715030042] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
22
|
Zhurina MV, Gannesen AV, Zdorovenko EL, Plakunov VK. Composition and functions of the extracellular polymer matrix of bacterial biofilms. Microbiology (Reading) 2014. [DOI: 10.1134/s002626171406023x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
|
23
|
Mart’yanov SV, Zhurina MV, El’-Registan GI, Plakunov VK. Activation of formation of bacterial biofilms by azithromycin and prevention of this effect. Microbiology (Reading) 2014. [DOI: 10.1134/s0026261714060113] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
24
|
Zhurina MV, Kostrikina NA, Parshina EY, Strelkova EA, Yusipovich AI, Maksimov GV, Plakunov VK. Visualization of the extracellular polymeric matrix of Chromobacterium violaceum biofilms by microscopic methods. Microbiology (Reading) 2013. [DOI: 10.1134/s0026261713040164] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|