1
|
Rizzarelli P, Leanza M, Rapisarda M. Investigations into the characterization, degradation, and applications of biodegradable polymers by mass spectrometry. MASS SPECTROMETRY REVIEWS 2023. [PMID: 38014928 DOI: 10.1002/mas.21869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 10/10/2023] [Accepted: 11/08/2023] [Indexed: 11/29/2023]
Abstract
Biodegradable polymers have been getting more and more attention because of their contribution to the plastic pollution environmental issues and to move towards a circular economy. Nevertheless, biodegradable materials still exhibit various disadvantages restraining a widespread use in the market. Therefore, additional research efforts are required to improve their performance. Mass spectrometry (MS) affords a relevant contribution to optimize biodegradable polymer synthesis, to confirm macromolecular structures, to examine along the time the progress of degradation processes and highlight advantages and drawbacks in the extensive applications. This review aims to provide an overview of the MS investigations carried out to support the synthesis of biodegradable polymers, with helpful information on undesirable products or polymerization mechanism, to understand deterioration pathways by the structure of degradation products and to follow drug release and pharmacokinetic. Additionally, it summarizes MS studies addressed on environmental and health issues related to the extensive use of plastic materials, that is, potential migration of additives or microplastics identification and quantification. The paper is focused on the most significant studies relating to synthetic and microbial biodegradable polymers published in the last 15 years, not including agro-polymers such as proteins and polysaccharides.
Collapse
Affiliation(s)
- Paola Rizzarelli
- Consiglio Nazionale delle Ricerche (CNR), Istituto per i Polimeri Compositi e Biomateriali (IPCB), ede Secondaria di Catania, Catania, Italy
| | - Melania Leanza
- Consiglio Nazionale delle Ricerche (CNR), Istituto per i Polimeri Compositi e Biomateriali (IPCB), ede Secondaria di Catania, Catania, Italy
| | - Marco Rapisarda
- Consiglio Nazionale delle Ricerche (CNR), Istituto per i Polimeri Compositi e Biomateriali (IPCB), ede Secondaria di Catania, Catania, Italy
| |
Collapse
|
2
|
Kankonkar HT, Khandeparker RS. Microplastics a Novel Substratum for Polyhydroxyalkanoate (PHA)-Producing Bacteria in Aquatic Environments. Curr Microbiol 2022; 79:258. [PMID: 35852610 PMCID: PMC9295092 DOI: 10.1007/s00284-022-02929-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 06/08/2022] [Indexed: 12/02/2022]
Abstract
Polyhydroxyalkanoates (PHA) being biological polymers have attracted great attention. PHA have similar properties to that of synthetic plastic and are biodegradable. To discourage plastic pollution in the environment alternative solutions to the plastic pollution has to be readily available. High cost in production of PHA limits the production of these polymers at industrial scale. Bacteria are screened for PHA from diverse niches to meet the current requirements of cheap PHA production at industrial level. The microbial biofilm formed on the surface of microplastic could be a potential source in providing bacteria of economic importance. This paper is an attempt to search microplastic niche for potential PHA producers. PHA production variation was observed with different parameters such as type of carbon source, nitrogen source concentration and also time of incubation. Bacillus sp. CM27 showed maximum PHA yield up to 32.1% among other isolates at 48 h with 2% glucose as carbon source. Optimization of media leads to increase in PHA yield (37.69%) of CDW in Bacillus sp. CM27. Amino acid sequence of Bacillus sp.CM27 showed the presence of PhaC box with sequence, G-Y-C-M-G-G having cysteine in the middle of the box. The extracted polymer was confirmed by FTIR spectroscopy.
Collapse
Affiliation(s)
- Harshada T Kankonkar
- Microbial Ecology Laboratory, Biological Oceanography Division, CSIR-National Institute of Oceanography, Raj Bhavan Road, Dona Paula, Goa, 403004, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Rakhee S Khandeparker
- Microbial Ecology Laboratory, Biological Oceanography Division, CSIR-National Institute of Oceanography, Raj Bhavan Road, Dona Paula, Goa, 403004, India.
| |
Collapse
|
3
|
Cao JS, Xu RZ, Luo JY, Feng Q, Fang F. Rapid quantification of intracellular polyhydroxyalkanoates via fluorescence techniques: A critical review. BIORESOURCE TECHNOLOGY 2022; 350:126906. [PMID: 35227918 DOI: 10.1016/j.biortech.2022.126906] [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: 01/05/2022] [Revised: 02/14/2022] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
Polyhydroxyalkanoates (PHA) are promising bioplastics with excellent physicochemical properties and biodegradability, whereas PHA products suffer from high manufacturing costs. To reduce costs of PHA production, experiments with mixed microbial cultures and low-cost substrates have been conducted widely, where rapid and robust PHA quantification methods are necessary. Compared with traditional gas chromatography methods, PHA fluorescence quantification (PHA-FQ) methods may be quicker, safer and more suitable for modern experiments with high throughput requirements. However, practical applications of PHA-FQ methods are still limited. Therefore, this review provides a comprehensive understanding of PHA-FQ methods. Performance of PHA-staining fluorochromes, relevant spectral properties, and important staining procedures are summarized. Current developments of PHA-FQ protocols are critically reviewed. Main considerations needed to make PHA-FQ protocol reliable are comprehensively discussed. Finally, potential improvements in various aspects of PHA-FQ methods are highlighted. This review could help researchers develop more effective PHA-FQ methods and facilitate future experiments related to PHA.
Collapse
Affiliation(s)
- Jia-Shun Cao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Run-Ze Xu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Jing-Yang Luo
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Qian Feng
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Fang Fang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China.
| |
Collapse
|
4
|
Christensen M, Jablonski P, Altermark B, Irgum K, Hansen H. High natural PHA production from acetate in Cobetia sp. MC34 and Cobetia marina DSM 4741 T and in silico analyses of the genus specific PhaC 2 polymerase variant. Microb Cell Fact 2021; 20:225. [PMID: 34930259 PMCID: PMC8686332 DOI: 10.1186/s12934-021-01713-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 11/28/2021] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Several members of the bacterial Halomonadacea family are natural producers of polyhydroxyalkanoates (PHA), which are promising materials for use as biodegradable bioplastics. Type-strain species of Cobetia are designated PHA positive, and recent studies have demonstrated relatively high PHA production for a few strains within this genus. Industrially relevant PHA producers may therefore be present among uncharacterized or less explored members. In this study, we characterized PHA production in two marine Cobetia strains. We further analyzed their genomes to elucidate pha genes and metabolic pathways which may facilitate future optimization of PHA production in these strains. RESULTS Cobetia sp. MC34 and Cobetia marina DSM 4741T were mesophilic, halotolerant, and produced PHA from four pure substrates. Sodium acetate with- and without co-supplementation of sodium valerate resulted in high PHA production titers, with production of up to 2.5 g poly(3-hydroxybutyrate) (PHB)/L and 2.1 g poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)/L in Cobetia sp. MC34, while C. marina DSM 4741T produced 2.4 g PHB/L and 3.7 g PHBV/L. Cobetia marina DSM 4741T also showed production of 2.5 g PHB/L from glycerol. The genome of Cobetia sp. MC34 was sequenced and phylogenetic analyses revealed closest relationship to Cobetia amphilecti. PHA biosynthesis genes were located at separate loci similar to the arrangement in other Halomonadacea. Further genome analyses revealed some differences in acetate- and propanoate metabolism genes between the two strains. Interestingly, only a single PHA polymerase gene (phaC2) was found in Cobetia sp. MC34, in contrast to two copies (phaC1 and phaC2) in C. marina DSM 4741T. In silico analyses based on phaC genes show that the PhaC2 variant is conserved in Cobetia and contains an extended C-terminus with a high isoelectric point and putative DNA-binding domains. CONCLUSIONS Cobetia sp. MC34 and C. marina DSM 4741T are natural producers of PHB and PHBV from industrially relevant pure substrates including acetate. However, further scale up, optimization of growth conditions, or use of metabolic engineering is required to obtain industrially relevant PHA production titers. The putative role of the Cobetia PhaC2 variant in DNA-binding and the potential implications remains to be addressed by in vitro- or in vivo methods.
Collapse
Affiliation(s)
- Mikkel Christensen
- Department of Chemistry, UiT-The Arctic University of Norway, 9037 Tromsø, Norway
| | - Piotr Jablonski
- Department of Chemistry, Umeå University, 90187 Umeå, Sweden
| | - Bjørn Altermark
- Department of Chemistry, UiT-The Arctic University of Norway, 9037 Tromsø, Norway
| | - Knut Irgum
- Department of Chemistry, Umeå University, 90187 Umeå, Sweden
| | - Hilde Hansen
- Department of Chemistry, UiT-The Arctic University of Norway, 9037 Tromsø, Norway
| |
Collapse
|
5
|
Kopperi H, Amulya K, Venkata Mohan S. Simultaneous biosynthesis of bacterial polyhydroxybutyrate (PHB) and extracellular polymeric substances (EPS): Process optimization and Scale-up. BIORESOURCE TECHNOLOGY 2021; 341:125735. [PMID: 34461403 DOI: 10.1016/j.biortech.2021.125735] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 08/02/2021] [Accepted: 08/05/2021] [Indexed: 06/13/2023]
Abstract
Owing to their biodegradability and renewability, biopolymers are being employed in industrial and bio-medical sectors as sustainable alternatives to chemical based polymers. In the present study, isolated Providencia sp. depicted dual production of intra and extracellular biopolymers, polyhydroxybutyrate (PHB) and extracellular polymeric substances (EPS), respectively. The polymer production process was optimised by varying process parameters such as carbon load (20, 30 and 40 g L-1) and pH (6, 7 and 8) for enhancing PHB and EPS productivity. Maximum yield of both PHB (2.62 g L-1) and EPS (3.92 g L-1) was observed with carbon load of 30 g L-1 at pH 7. Scale-up studies were performed with optimized conditions and PHB and EPS production of 2.62 g L-1 and 3.91 g L-1, respectively was observed. The extracted EPS and PHB were characterized using FT-IR, FE-SEM-EDX, H1 and C13 NMR and fluorescence microscopy.
Collapse
Affiliation(s)
- Harishankar Kopperi
- Bioengineering and Environmental Sciences (BEES) Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - K Amulya
- Bioengineering and Environmental Sciences (BEES) Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - S Venkata Mohan
- Bioengineering and Environmental Sciences (BEES) Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India.
| |
Collapse
|
6
|
Analysis of Polyhydroxyalkanoates Granules in Haloferax mediterranei by Double-Fluorescence Staining with Nile Red and SYBR Green by Confocal Fluorescence Microscopy. Polymers (Basel) 2021; 13:polym13101582. [PMID: 34069083 PMCID: PMC8156647 DOI: 10.3390/polym13101582] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/04/2021] [Accepted: 05/12/2021] [Indexed: 11/20/2022] Open
Abstract
Haloferaxmediterranei is a haloarchaeon of high interest in biotechnology because it produces and mobilizes intracellular polyhydroxyalkanoate (PHA) granules during growth under stress conditions (limitation of phosphorous in the culture media), among other interesting metabolites (enzymes, carotenoids, etc.). The capability of PHA production by microbes can be monitored with the use of staining-based methods. However, the staining of haloarchaea cells is a challenging task; firstly, due to the high ionic strength of the medium, which is inappropriate for most of dyes, and secondly, due to the low permeability of the haloarchaea S-layer to macromolecules. In this work, Haloferax mediterranei is used as a halophilic archaeon model to describe an optimized protocol for the visualization and analysis of intracellular PHA granules in living cells. The method is based on double-fluorescence staining using Nile red and SYBR Green by confocal fluorescence microscopy. Thanks to this method, the capability of PHA production by new haloarchaea isolates could be easily monitored.
Collapse
|
7
|
Vannini C, Rossi A, Vallerini F, Menicagli V, Seggiani M, Cinelli P, Lardicci C, Balestri E. Microbial communities of polyhydroxyalkanoate (PHA)-based biodegradable composites plastisphere and of surrounding environmental matrix: a comparison between marine (seabed) and coastal sediments (dune sand) over a long-time scale. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 764:142814. [PMID: 33129544 DOI: 10.1016/j.scitotenv.2020.142814] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/30/2020] [Accepted: 09/30/2020] [Indexed: 06/11/2023]
Abstract
Most researches on the plastisphere in coastal environments deal with plastics floating in seawater. Comparatively smaller attention has been devoted to the plastisphere of plastics buried in marine sediments, and very little is known on that of plastics on coastal sand dunes. Yet, limited information is available on the impact of plastics, especially biodegradable plastics, on microbial organisms in their surroundings. Nevertheless, a large amount of plastics sink on the seabed or is deposited on beach-dune systems. We investigated the succession of plastisphere microbial community on two biodegradable composites based on poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) and seagrass fibres (PHBV/PO), buried in seabed and dune sediments over a 27 months period in mesocosm. PHBV is regarded as a valuable alternative to conventional plastics and PHBV/PO has recently been designed for applications in coastal habitat restoration. We also examined the degradation rate and impact of these plastics on the microbial communities of surrounding sediments. Microbial communities of the surface of PHBV and PHBV/PO in seabed and dune sand differ from those of surrounding sediments, displaying a lower richness. Plastics colonization occurs largely from bacteria present in surrounding sediments, although the contribution from the water column bacterial pool could be not negligible for plastics in the seabed. No significant differences were detected between the communities of the two plastics and no significant impact of plastics on microbial community of the surrounding sediments was detected. The exceptional long duration of this study allowed to gain information on the succession of a plastisphere community over a previously unexplored time scale. Succession appears highly dynamic in dune sand even after two years, while the community structure in seabed seems to reach stability after one year. These findings highlight the importance of performing long-term studies when trying to characterize composition and dynamics of plastisphere bacterial communities.
Collapse
Affiliation(s)
- Claudia Vannini
- Department of Biology, University of Pisa, Pisa I-56126, Italy; CIME, Centro Interdipartimentale di Microscopia Elettronica, University of Pisa, Pisa I-56126, Italy.
| | - Alessia Rossi
- Department of Biology, University of Pisa, Pisa I-56126, Italy.
| | | | | | - Maurizia Seggiani
- Department of Civil and Industrial Engineering, University of Pisa, Pisa I-56126, Italy.
| | - Patrizia Cinelli
- Department of Civil and Industrial Engineering, University of Pisa, Pisa I-56126, Italy.
| | - Claudio Lardicci
- Department of Biology, University of Pisa, Pisa I-56126, Italy; Department of Earth Sciences, University of Pisa, Pisa I-56126, Italy.
| | - Elena Balestri
- Department of Biology, University of Pisa, Pisa I-56126, Italy.
| |
Collapse
|
8
|
Kettner A, Griehl C. The use of LipidGreen2 for visualization and quantification of intracellular Poly(3-hydroxybutyrate) in Cupriavidus necator. Biochem Biophys Rep 2020; 24:100819. [PMID: 33024843 PMCID: PMC7528054 DOI: 10.1016/j.bbrep.2020.100819] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/07/2020] [Accepted: 09/08/2020] [Indexed: 12/15/2022] Open
Abstract
Numerous studies have been conducted to develop a rapid protocol for the quantification of poly(3-hydroxybutyrate) during bacterial fermentation as an alternative to time-consuming gravimetric or analytical methods. Fluorescence spectroscopy is one of the most promising approaches. In this study, it could be demonstrated that the novel fluorescent probe LipidGreen2 is able to stain selectively poly(3-hydroxybutyrate) in Cupriavidus necator. Optimal excitation and emission wavelengths were evaluated using 3D-Excitation-Emission-Matrix, displaying the best intensities between 440-460 nm and 490-520 nm for excitation and emission, respectively. The lipophilic fluorophore LipidGreen2 showed a high long-term stability even when incubated under ambient lighting. Due to a strong linear relationship between side scatter and biomass concentration, the influence of the inner filter effects could be incorporated, and adjusting the sample to a specific OD is thus superfluous. The developed method allows a very accurate quantification of poly(3-hydroxybutyrate) in just 15 min, following a comprehensible and simple protocol. It is also excellently suited for bioimaging of intracellular poly(3-hydroxybutyrate) granules.
Collapse
Affiliation(s)
- Alexander Kettner
- Anhalt University of Applied Sciences, Department of Applied Biosciences and Process Engineering, Bernburger Strasse 55, 06366, Koethen, Germany
| | - Carola Griehl
- Anhalt University of Applied Sciences, Department of Applied Biosciences and Process Engineering, Bernburger Strasse 55, 06366, Koethen, Germany
| |
Collapse
|
9
|
Mitra R, Xu T, Xiang H, Han J. Current developments on polyhydroxyalkanoates synthesis by using halophiles as a promising cell factory. Microb Cell Fact 2020; 19:86. [PMID: 32264891 PMCID: PMC7137286 DOI: 10.1186/s12934-020-01342-z] [Citation(s) in RCA: 95] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 03/26/2020] [Indexed: 11/17/2022] Open
Abstract
Plastic pollution is a severe threat to our environment which necessitates implementation of bioplastics to realize sustainable development for a green world. Polyhydroxyalkanoates (PHA) represent one of the potential candidates for these bioplastics. However, a major challenge faced by PHA is the high production cost which limits its commercial application. Halophiles are considered to be a promising cell factory for PHA synthesis due to its several unique characteristics including high salinity requirement preventing microbial contamination, high intracellular osmotic pressure allowing easy cell lysis for PHA recovery, and capability to utilize wide spectrum of low-cost substrates. Optimization of fermentation parameters has made it plausible to achieve large-scale production at low cost by using halophiles. Further deeper insights into halophiles have revealed the existence of diversified and even novel PHA synthetic pathways within different halophilic species that greatly affects PHA type. Thus, precise metabolic engineering of halophiles with the help of advanced tools and strategies have led to more efficient microbial cell factory for PHA production. This review is an endeavour to summarize the various research achievements in these areas which will help the readers to understand the current developments as well as the future efforts in PHA research.
Collapse
Affiliation(s)
- Ruchira Mitra
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China.,International College, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Tong Xu
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
| | - Hua Xiang
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China. .,College of Life Science, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
| | - Jing Han
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China. .,College of Life Science, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
| |
Collapse
|
10
|
Thomas T, Sudesh K, Bazire A, Elain A, Tan HT, Lim H, Bruzaud S. PHA Production and PHA Synthases of the Halophilic Bacterium Halomonas sp. SF2003. Bioengineering (Basel) 2020; 7:bioengineering7010029. [PMID: 32244900 PMCID: PMC7175313 DOI: 10.3390/bioengineering7010029] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 03/09/2020] [Accepted: 03/17/2020] [Indexed: 01/18/2023] Open
Abstract
Among the different tools which can be studied and managed to tailor-make polyhydroxyalkanoates (PHAs) and enhance their production, bacterial strain and carbon substrates are essential. The assimilation of carbon sources is dependent on bacterial strain’s metabolism and consequently cannot be dissociated. Both must wisely be studied and well selected to ensure the highest production yield of PHAs. Halomonas sp. SF2003 is a marine bacterium already identified as a PHA-producing strain and especially of poly-3-hydroxybutyrate (P-3HB) and poly-3-hydroxybutyrate-co-3-hydroxyvalerate (P-3HB-co-3HV). Previous studies have identified different genes potentially involved in PHA production by Halomonas sp. SF2003, including two phaC genes with atypical characteristics, phaC1 and phaC2. At the same time, an interesting adaptability of the strain in front of various growth conditions was highlighted, making it a good candidate for biotechnological applications. To continue the characterization of Halomonas sp. SF2003, the screening of carbon substrates exploitable for PHA production was performed as well as production tests. Additionally, the functionality of both PHA synthases PhaC1 and PhaC2 was investigated, with an in silico study and the production of transformant strains, in order to confirm and to understand the role of each one on PHA production. The results of this study confirm the adaptability of the strain and its ability to exploit various carbon substrates, in pure or mixed form, for PHA production. Individual expression of PhaC1 and PhaC2 synthases in a non-PHA-producing strain, Cupriavidus necator H16 PHB¯4 (DSM 541), allows obtaining PHA production, demonstrating at the same time, functionality and differences between both PHA synthases. All the results of this study confirm the biotechnological interest in Halomonas sp. SF2003.
Collapse
Affiliation(s)
- Tatiana Thomas
- Institut de Recherche Dupuy de Lôme (IRDL), Université de Bretagne Sud (UBS), EA 3884 Lorient, France;
- Institut de Recherche Dupuy de Lôme (IRDL), Université de Bretagne Sud (UBS), 56300 Pontivy, France;
- Correspondence: ; Tel.: +33-661-730-222
| | - Kumar Sudesh
- School of Biological Sciences, Universiti Sains Malaysia (USM), Penang 11800, Malaysia; (K.S.); (H.T.T.); (H.L.)
| | - Alexis Bazire
- Laboratoire de Biotechnologie et Chimie Marines (LBCM), IUEM, Université de Bretagne-Sud (UBS), EA 3884 Lorient, France;
| | - Anne Elain
- Institut de Recherche Dupuy de Lôme (IRDL), Université de Bretagne Sud (UBS), 56300 Pontivy, France;
| | - Hua Tiang Tan
- School of Biological Sciences, Universiti Sains Malaysia (USM), Penang 11800, Malaysia; (K.S.); (H.T.T.); (H.L.)
| | - Hui Lim
- School of Biological Sciences, Universiti Sains Malaysia (USM), Penang 11800, Malaysia; (K.S.); (H.T.T.); (H.L.)
| | - Stéphane Bruzaud
- Institut de Recherche Dupuy de Lôme (IRDL), Université de Bretagne Sud (UBS), EA 3884 Lorient, France;
| |
Collapse
|
11
|
An investigation for recovery of polyhydroxyalkanoates (PHA) from Bacillus sp. BPPI-14 and Bacillus sp. BPPI-19 isolated from plastic waste landfill. Int J Biol Macromol 2019; 134:1085-1096. [DOI: 10.1016/j.ijbiomac.2019.05.155] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 05/01/2019] [Accepted: 05/21/2019] [Indexed: 11/21/2022]
|
12
|
Liu C, Qi L, Yang S, He Y, Jia X. Increased sedimentation of a Pseudomonas–Saccharomyces microbial consortium producing medium chain length polyhydroxyalkanoates. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2018.11.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
13
|
Production of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) using agro-industrial effluents with tunable proportion of 3-hydroxyvalerate monomer units. Int J Biol Macromol 2019; 128:429-434. [DOI: 10.1016/j.ijbiomac.2019.01.170] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 01/28/2019] [Accepted: 01/28/2019] [Indexed: 02/01/2023]
|
14
|
Thomas T, Elain A, Bazire A, Bruzaud S. Complete genome sequence of the halophilic PHA-producing bacterium Halomonas sp. SF2003: insights into its biotechnological potential. World J Microbiol Biotechnol 2019; 35:50. [PMID: 30852675 DOI: 10.1007/s11274-019-2627-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 03/04/2019] [Indexed: 10/27/2022]
Abstract
A halophilic Gram-negative eubacterium was isolated from the Iroise Sea and identified as an efficient producer of polyhydroxyalkanoates (PHA). The strain, designated SF2003, was found to belong to the Halomonas genus on the basis of 16S rRNA gene sequence similarity. Previous biochemical tests indicated that the Halomonas sp. strain SF2003 is capable of supporting various culture conditions which sometimes can be constraining for marine strains. This versatility could be of great interest for biotechnological applications. Therefore, a complete bacterial genome sequencing and de novo assembly were performed using a PacBio RSII sequencer and Hierarchical Genome Assembly Process software in order to predict Halomonas sp. SF2003 metabolisms, and to identify genes involved in PHA production and stress tolerance. This study demonstrates the complete genome sequence of Halomonas sp. SF2003 which contains a circular 4,36 Mbp chromosome, and replaces the strain in a phylogenetic tree. Genes related to PHA metabolism, carbohydrate metabolism, fatty acid metabolism and stress tolerance were identified and a comparison was made with metabolisms of relative species. Genes annotation highlighted the presence of typical genes involved in PHA biosynthesis such as phaA, phaB and phaC and enabled a preliminary analysis of their organization and characteristics. Several genes of carbohydrates and fatty acid metabolisms were also identified which provided helpful insights into both a better knowledge of the intricacies of PHA biosynthetic pathways and of production purposes. Results show the strong versatility of Halomonas sp. SF2003 to adapt to various temperatures and salinity which can subsequently be exploited for industrial applications such as PHA production.
Collapse
Affiliation(s)
- Tatiana Thomas
- Institut de Recherche Dupuy de Lôme (IRDL), UMR CNRS 6027, Université de Bretagne Sud, Rue Saint Maudé, Lorient, France
| | - Anne Elain
- Institut de Recherche Dupuy de Lôme (IRDL), UMR CNRS 6027, Université de Bretagne Sud, Rue Saint Maudé, Lorient, France
| | - Alexis Bazire
- Laboratoire de Biotechnologie et Chimie Marines, EA3884, IUEM, Université de Bretagne-Sud, Lorient, France
| | - Stéphane Bruzaud
- Institut de Recherche Dupuy de Lôme (IRDL), UMR CNRS 6027, Université de Bretagne Sud, Rue Saint Maudé, Lorient, France.
| |
Collapse
|
15
|
Dussud C, Hudec C, George M, Fabre P, Higgs P, Bruzaud S, Delort AM, Eyheraguibel B, Meistertzheim AL, Jacquin J, Cheng J, Callac N, Odobel C, Rabouille S, Ghiglione JF. Colonization of Non-biodegradable and Biodegradable Plastics by Marine Microorganisms. Front Microbiol 2018; 9:1571. [PMID: 30072962 PMCID: PMC6058052 DOI: 10.3389/fmicb.2018.01571] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 06/25/2018] [Indexed: 11/21/2022] Open
Abstract
Plastics are ubiquitous in the oceans and constitute suitable matrices for bacterial attachment and growth. Understanding biofouling mechanisms is a key issue to assessing the ecological impacts and fate of plastics in marine environment. In this study, we investigated the different steps of plastic colonization of polyolefin-based plastics, on the first one hand, including conventional low-density polyethylene (PE), additivated PE with pro-oxidant (OXO), and artificially aged OXO (AA-OXO); and of a polyester, poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), on the other hand. We combined measurements of physical surface properties of polymers (hydrophobicity and roughness) with microbiological characterization of the biofilm (cell counts, taxonomic composition, and heterotrophic activity) using a wide range of techniques, with some of them used for the first time on plastics. Our experimental setup using aquariums with natural circulating seawater during 6 weeks allowed us to characterize the successive phases of primo-colonization, growing, and maturation of the biofilms. We highlighted different trends between polymer types with distinct surface properties and composition, the biodegradable AA-OXO and PHBV presenting higher colonization by active and specific bacteria compared to non-biodegradable polymers (PE and OXO). Succession of bacterial population occurred during the three colonization phases, with hydrocarbonoclastic bacteria being highly abundant on all plastic types. This study brings original data that provide new insights on the colonization of non-biodegradable and biodegradable polymers by marine microorganisms.
Collapse
Affiliation(s)
- Claire Dussud
- CNRS, UPMC Univ Paris 06, UMR7621, Laboratoire d'Océanographie Microbienne (LOMIC), Observatoire Océanologique de Banyuls, Sorbonne Université, Banyuls-sur-Mer, France
| | - Cindy Hudec
- CNRS, UPMC Univ Paris 06, UMR7621, Laboratoire d'Océanographie Microbienne (LOMIC), Observatoire Océanologique de Banyuls, Sorbonne Université, Banyuls-sur-Mer, France
| | - Matthieu George
- CNRS/UM, UMR5221, Laboratoire Charles Coulomb (L2C), Montpellier, France
| | - Pascale Fabre
- CNRS/UM, UMR5221, Laboratoire Charles Coulomb (L2C), Montpellier, France
| | - Perry Higgs
- Symphony Environmental Ltd., Hertfordshire, United Kingdom
| | - Stéphane Bruzaud
- Université de Bretagne-Sud, Institut de Recherche Dupuy de Lôme (IRDL), UMR CNRS 6027, Lorient Cedex, France
| | - Anne-Marie Delort
- CNRS, UMR6296, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand (ICCF), Université Clermont Auvergne, Clermont-Ferrand, France
| | - Boris Eyheraguibel
- CNRS, UMR6296, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand (ICCF), Université Clermont Auvergne, Clermont-Ferrand, France
| | - Anne-Leïla Meistertzheim
- CNRS, UPMC Univ Paris 06, UMR7621, Laboratoire d'Océanographie Microbienne (LOMIC), Observatoire Océanologique de Banyuls, Sorbonne Université, Banyuls-sur-Mer, France
| | - Justine Jacquin
- CNRS, UPMC Univ Paris 06, UMR7621, Laboratoire d'Océanographie Microbienne (LOMIC), Observatoire Océanologique de Banyuls, Sorbonne Université, Banyuls-sur-Mer, France
| | - Jingguang Cheng
- CNRS, UPMC Univ Paris 06, UMR7621, Laboratoire d'Océanographie Microbienne (LOMIC), Observatoire Océanologique de Banyuls, Sorbonne Université, Banyuls-sur-Mer, France
| | - Nolwenn Callac
- CNRS, UPMC Univ Paris 06, UMR7621, Laboratoire d'Océanographie Microbienne (LOMIC), Observatoire Océanologique de Banyuls, Sorbonne Université, Banyuls-sur-Mer, France
| | - Charlène Odobel
- CNRS, UPMC Univ Paris 06, UMR7621, Laboratoire d'Océanographie Microbienne (LOMIC), Observatoire Océanologique de Banyuls, Sorbonne Université, Banyuls-sur-Mer, France
| | - Sophie Rabouille
- CNRS, UPMC Univ Paris 06, UMR7093, Laboratoire d'Océanographie de Villefranche (LOV), Sorbonne Universités, Villefranche-sur-Mer, France
| | - Jean-François Ghiglione
- CNRS, UPMC Univ Paris 06, UMR7621, Laboratoire d'Océanographie Microbienne (LOMIC), Observatoire Océanologique de Banyuls, Sorbonne Université, Banyuls-sur-Mer, France
| |
Collapse
|
16
|
Liu CC, Zhang LL, An J, Chen B, Yang H. Recent strategies for efficient production of polyhydroxyalkanoates by micro-organisms. Lett Appl Microbiol 2015; 62:9-15. [PMID: 26482840 DOI: 10.1111/lam.12511] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 09/29/2015] [Accepted: 10/12/2015] [Indexed: 12/15/2022]
Affiliation(s)
- C.-C. Liu
- Translational Medicine Center; Hong-Hui Hospital; Xi'an Jiaotong University College of Medicine; Xi'an China
| | - L.-L. Zhang
- Translational Medicine Center; Hong-Hui Hospital; Xi'an Jiaotong University College of Medicine; Xi'an China
| | - J. An
- Translational Medicine Center; Hong-Hui Hospital; Xi'an Jiaotong University College of Medicine; Xi'an China
| | - B. Chen
- Translational Medicine Center; Hong-Hui Hospital; Xi'an Jiaotong University College of Medicine; Xi'an China
| | - H. Yang
- Translational Medicine Center; Hong-Hui Hospital; Xi'an Jiaotong University College of Medicine; Xi'an China
| |
Collapse
|