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Handayani DP, Isnansetyo A, Istiqomah I, Jumina J. New Report: Genome Mining Untaps the Antibiotics Biosynthetic Gene Cluster of Pseudoalteromonas xiamenensis STKMTI.2 from a Mangrove Soil Sediment. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2022; 24:190-202. [PMID: 35166965 DOI: 10.1007/s10126-022-10096-1] [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: 07/06/2021] [Accepted: 01/21/2022] [Indexed: 06/14/2023]
Abstract
The marine bacterium Pseudoalteromonas xiamenensis STKMTI.2 was isolated from a mangrove soil sediment on Setokok Island, Batam, Indonesia. The genome of this bacterium consisted of 4,563,326 bp (GC content: 43.2%) with 1 chromosome, 2 circular plasmids, 2 linear plasmids, 4,824 protein-coding sequences, 25 rRNAs, 104 tRNAs, 4 ncRNAs, and 1 clustered, regularly interspaced, short palindromic repeated (CRISPR). This strain possessed cluster genes which are responsible for the production of brominated marine pyrroles/phenols (bmp), namely, bmp8 and bmp9. Other gene clusters responsible for the synthesis of secondary metabolites were identified using antiSMASH and BAGEL4, which yielded five results, namely, non-ribosomal peptides, polyketide-like butyrolactone, Lant class I, and RiPP-like, detected in chromosome 1, while prodigiosin was detected in the unnamed plasmid 5. This suggests that these whole genome data will be of remarkable importance for the improved understanding of the biosynthesis of industrially important bioactive and antibacterial compounds produced by P. xiamenensis STKMTI.2.
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Affiliation(s)
- Desy Putri Handayani
- Department of Fisheries, Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Alim Isnansetyo
- Department of Fisheries, Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta, Indonesia.
| | - Indah Istiqomah
- Department of Fisheries, Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Jumina Jumina
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, Indonesia
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Identification and Characterization of Three Chitinases with Potential in Direct Conversion of Crystalline Chitin into N,N′-diacetylchitobiose. Mar Drugs 2022; 20:md20030165. [PMID: 35323464 PMCID: PMC8950537 DOI: 10.3390/md20030165] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/23/2022] [Accepted: 02/23/2022] [Indexed: 02/01/2023] Open
Abstract
Chitooligosaccharides (COSs) have been widely used in agriculture, medicine, cosmetics, and foods, which are commonly prepared from chitin with chitinases. So far, while most COSs are prepared from colloidal chitin, chitinases used in preparing COSs directly from natural crystalline chitin are less reported. Here, we characterize three chitinases, which were identified from the marine bacterium Pseudoalteromonas flavipulchra DSM 14401T, with an ability to degrade crystalline chitin into (GlcNAc)2 (N,N’-diacetylchitobiose). Strain DSM 14401 can degrade the crystalline α-chitin in the medium to provide nutrients for growth. Genome and secretome analyses indicate that this strain secretes six chitinolytic enzymes, among which chitinases Chia4287, Chib0431, and Chib0434 have higher abundance than the others, suggesting their importance in crystalline α-chitin degradation. These three chitinases were heterologously expressed, purified, and characterized. They are all active on crystalline α-chitin, with temperature optima of 45–50 °C and pH optima of 7.0–7.5. They are all stable at 40 °C and in the pH range of 5.0–11.0. Moreover, they all have excellent salt tolerance, retaining more than 92% activity after incubation in 5 M NaCl for 10 h at 4 °C. When acting on crystalline α-chitin, the main products of the three chitinases are all (GlcNAc)2, which suggests that chitinases Chia4287, Chib0431, and Chib0434 likely have potential in direct conversion of crystalline chitin into (GlcNAc)2.
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Xu F, Cha QQ, Zhang YZ, Chen XL. Degradation and Utilization of Alginate by Marine Pseudoalteromonas: a Review. Appl Environ Microbiol 2021; 87:e0036821. [PMID: 34160244 PMCID: PMC8357284 DOI: 10.1128/aem.00368-21] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Alginate, which is mainly produced by brown algae and decomposed by heterotrophic bacteria, is an important marine organic carbon source. The genus Pseudoalteromonas contains diverse forms of heterotrophic bacteria that are widely distributed in marine environments and are an important group in alginate degradation. In this review, the diversity of alginate-degrading Pseudoalteromonas is introduced, and the characteristics of Pseudoalteromonas alginate lyases, including their sequences, enzymatic properties, structures, and catalytic mechanisms, and the synergistic effect of Pseudoalteromonas alginate lyases on alginate degradation are introduced. The acquisition of the alginate degradation capacity and the alginate utilization pathways of Pseudoalteromonas are also introduced. This paper provides a comprehensive overview of alginate degradation by Pseudoalteromonas, which will contribute to the understanding of the degradation and recycling of marine algal polysaccharides driven by marine bacteria.
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Affiliation(s)
- Fei Xu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
- College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, China
| | - Qian-Qian Cha
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Yu-Zhong Zhang
- College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, China
- Marine Biotechnology Research Center, State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Xiu-Lan Chen
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, China
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Park J, Kim SJ, Kim EB. Changes in the Microbial Community of the Mottled Skate ( Beringraja pulchra) During Alkaline Fermentation. J Microbiol Biotechnol 2020; 30:1195-1206. [PMID: 32423184 PMCID: PMC9728196 DOI: 10.4014/jmb.2003.03024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 05/06/2020] [Indexed: 12/15/2022]
Abstract
Beringraja pulchra, Cham-hong-eo in Korean, is a mottled skate which is belonging to the cartilaginous fish. Although this species is economically valuable in South Korea as an alkalinefermented food, there are few microbial studies on such fermentation. Here, we analyzed microbial changes and pH before, during, and after fermentation and examined the effect of inoculation by a skin microbiota mixture on the skate fermentation (control vs. treatment). To analyze microbial community, the V4 regions of bacterial 16S rRNA genes from the skates were amplified, sequenced and analyzed. During the skate fermentation, pH and total number of marine bacteria increased in both groups, while microbial diversity decreased after fermentation. Pseudomonas, which was predominant in the initial skate, declined by fermentation (Day 0: 11.39 ± 5.52%; Day 20: 0.61 ± 0.9%), while the abundance of Pseudoalteromonas increased dramatically (Day 0: 1.42 ± 0.41%; Day 20: 64.92 ± 24.15%). From our co-occurrence analysis, the Pseudoalteromonas was positively correlated with Aerococcaceae (r = 0.638) and Moraxella (r = 0.474), which also increased with fermentation, and negatively correlated with Pseudomonas (r = -0.847) during fermentation. There are no critically significant differences between control and treatment. These results revealed that the alkaline fermentation of skates dramatically changed the microbiota, but the initial inoculation by a skin microbiota mixture didn't show critical changes in the final microbial community. Our results extended understanding of microbial interactions and provided the new insights of microbial changes during alkaline fermentation.
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Affiliation(s)
- Jongbin Park
- Department of Applied Animal Science, College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Soo Jin Kim
- Department of Animal Life Science, College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Eun Bae Kim
- Department of Applied Animal Science, College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea,Department of Animal Life Science, College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea,Corresponding author Phone: +82-33-250-8642 Fax: +82-33-259-5574 E-mail:
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Navarro-Torre S, Carro L, Rodríguez-Llorente ID, Pajuelo E, Caviedes MÁ, Igual JM, Klenk HP, Montero-Calasanz MDC. Pseudoalteromonas rhizosphaerae sp. nov. , a novel plant growth-promoting bacterium with potential use in phytoremediation. Int J Syst Evol Microbiol 2020; 70:3287-3294. [PMID: 32375987 PMCID: PMC7395622 DOI: 10.1099/ijsem.0.004167] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Strain RA15T was isolated from the rhizosphere of the halophyte plant Arthrocnemum macrostachyum growing in the Odiel marshes (Huelva, Spain). RA15T cells were Gram stain-negative, non-spore-forming, aerobic rods and formed cream-coloured, opaque, mucoid, viscous, convex, irregular colonies with an undulate margin. Optimal growth conditions were observed on tryptic soy agar (TSA) plates supplemented with 2.5 % NaCl (w/v) at pH 7.0 and 28 °C, although it was able to grow at 4–32 °C and at pH values of 5.0–9.0. The NaCl tolerance range was from 0 to 15 %. The major respiratory quinone was Q8 but Q9 was also present. The most abundant fatty acids were summed feature 3 (C16 : 1 ω7c and/or C16 : 1 ω6c), C17 : 1 ω8c and C16 : 0. The polar lipids profile comprised phosphatidylglycerol and phosphatidylethanolamine as the most abundant representatives. Phylogenetic analyses confirmed the well-supported affiliation of strain RA15T within the genus Pseudoalteromonas, close to the type strains of Pseudoalteromonas neustonica, Pseudoalteromonas prydzensis and Pseudoalteromonas mariniglutinosa. Results of comparative phylogenetic and phenotypic studies between strain RA15T and its closest related species suggest that RA15T could be a new representative of the genus Pseudoalteromonas, for which the name Pseudoalteromonas rhizosphaerae sp. nov. is proposed. The type strain is RA15T (=CECT 9079T=LMG 29860T). The whole genome has 5.3 Mb and the G+C content is 40.4 mol%.
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Affiliation(s)
- Salvadora Navarro-Torre
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Calle Profesor García González, 241012 Sevilla, Spain
| | - Lorena Carro
- Departamento de Microbiología y Genética. Universidad de Salamanca, 37007, Salamanca, Spain
| | - Ignacio D Rodríguez-Llorente
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Calle Profesor García González, 241012 Sevilla, Spain
| | - Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Calle Profesor García González, 241012 Sevilla, Spain
| | - Miguel Ángel Caviedes
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Calle Profesor García González, 241012 Sevilla, Spain
| | - José Mariano Igual
- Instituto de Recursos Naturales y Agrobiología de Salamanca, Consejo Superior de Investigaciones Científicas (IRNASA-CSIC), c/Cordel de Merinas 40-52, 37008 Salamanca, Spain
| | - Hans-Peter Klenk
- School of Natural and Environmental Sciences (SNES), Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
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Zeng Z, Cai X, Wang P, Guo Y, Liu X, Li B, Wang X. Biofilm Formation and Heat Stress Induce Pyomelanin Production in Deep-Sea Pseudoalteromonas sp. SM9913. Front Microbiol 2017; 8:1822. [PMID: 28983293 PMCID: PMC5613676 DOI: 10.3389/fmicb.2017.01822] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Accepted: 09/06/2017] [Indexed: 01/24/2023] Open
Abstract
Pseudoalteromonas is an important bacterial genus present in various marine habitats. Many strains of this genus are found to be surface colonizers on marine eukaryotes and produce a wide range of pigments. However, the exact physiological role and mechanism of pigmentation were less studied. Pseudoalteromonas sp. SM9913 (SM9913), an non-pigmented strain isolated from the deep-sea sediment, formed attached biofilm at the solid–liquid interface and pellicles at the liquid–air interface at a wide range of temperatures. Lower temperatures and lower nutrient levels promoted the formation of attached biofilm, while higher nutrient levels promoted pellicle formation of SM9913. Notably, after prolonged incubation at higher temperatures growing planktonically or at the later stage of the biofilm formation, we found that SM9913 released a brownish pigment. By comparing the protein profile at different temperatures followed by qRT-PCR, we found that the production of pigment at higher temperatures was due to the induction of melA gene which is responsible for the synthesis of homogentisic acid (HGA). The auto-oxidation of HGA can lead to the formation of pyomelanin, which has been shown in other bacteria. Fourier Transform Infrared Spectrometer analysis confirmed that the pigment produced in SM9913 was pyomelanin-like compound. Furthermore, we demonstrated that, during heat stress and during biofilm formation, the induction level of melA gene was significantly higher than that of the hmgA gene which is responsible for the degradation of HGA in the L-tyrosine catabolism pathway. Collectively, our results suggest that the production of pyomelanin of SM9913 at elevated temperatures or during biofilm formation might be one of the adaptive responses of marine bacteria to environmental cues.
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Affiliation(s)
- Zhenshun Zeng
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Xingsheng Cai
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Pengxia Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Yunxue Guo
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Xiaoxiao Liu
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Baiyuan Li
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of MicrobiologyGuangzhou, China
| | - Xiaoxue Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, The South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
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7
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Zeng Z, Guo XP, Cai X, Wang P, Li B, Yang JL, Wang X. Pyomelanin from Pseudoalteromonas lipolytica reduces biofouling. Microb Biotechnol 2017; 10:1718-1731. [PMID: 28834245 PMCID: PMC5658579 DOI: 10.1111/1751-7915.12773] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 06/14/2017] [Accepted: 06/15/2017] [Indexed: 01/11/2023] Open
Abstract
Members of the marine bacterial genus Pseudoalteromonas are efficient producers of antifouling agents that exert inhibitory effects on the settlement of invertebrate larvae. The production of pigmented secondary metabolites by Pseudoalteromonas has been suggested to play a role in surface colonization. However, the physiological characteristics of the pigments produced by Pseudoalteromonas remain largely unknown. In this study, we identified and characterized a genetic variant that hyperproduces a dark‐brown pigment and was generated during Pseudoalteromonas lipolytica biofilm formation. Through whole‐genome resequencing combined with targeted gene deletion and complementation, we found that a point mutation within the hmgA gene, which encodes homogentisate 1,2‐dioxygenase, is solely responsible for the overproduction of the dark‐brown pigment pyomelanin. In P. lipolytica, inactivation of the hmgA gene led to the formation of extracellular pyomelanin and greatly reduced larval settlement and metamorphosis of the mussel Mytilus coruscus. Additionally, the extracted pyomelanin from the hmgA deletion mutant and the in vitro‐synthesized pyomelanin also reduced larval settlement and metamorphosis of M. coruscus, suggesting that extracellular pyomelanin released from marine Pseudoalteromonas biofilm can inhibit the settlement of fouling organisms.
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Affiliation(s)
- Zhenshun Zeng
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Xing-Pan Guo
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, International Research Center for Marine Biosciences, Shanghai Ocean University, Shanghai, China
| | - Xingsheng Cai
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Pengxia Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Baiyuan Li
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Jin-Long Yang
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, International Research Center for Marine Biosciences, Shanghai Ocean University, Shanghai, China
| | - Xiaoxue Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
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Zhang DC, Liu YX, Huang HJ, Wu J. Pseudoalteromonas profundi sp. nov., isolated from a deep-sea seamount. Int J Syst Evol Microbiol 2016; 66:4416-4421. [PMID: 27493151 DOI: 10.1099/ijsem.0.001366] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-negative, rod-shaped, strictly aerobic, motile bacterial strain, designated TP162T, was isolated from a seamount near the Yap Trench in the tropical western Pacific. Phylogenetic analysis based on 16S rRNA gene sequence showed that strain TP162T was related to the genus Pseudoalteromonas and had highest 16S rRNA gene sequence similarities with the type strains Pseudoalteromonas shioyasakiensis SE3T (98.2 %), Pseudoalteromonas lipolytica LMEB 39T (97.7 %), Pseudoalteromonas arabiensis k53T (97.4 %) and Pseudoalteromonas aliena KMM 3562T (97.2 %). The predominant cellular fatty acids were summed feature 3 (composed of iso-C15 : 0 2-OH and/or C16 : 1ω7c), C17 : 1ω8c and C16 : 0. The quinone system for strain TP162T comprised predominantly ubiquinone-8, and the polar lipid profile contained phosphatidylethanolamine, phosphatidylglycerol, one unidentified phospholipid and four unidentified lipids. The genomic DNA G+C content of strain TP162T was 46.7 mol%. Strain TP162T shared 28 % DNA-DNA relatedness with P.shioyasakiensis JCM 18891T, 21 % with P. lipolytica JCM 15903T, 35 % with P.arabiensis JCM 17292T and 18 % with P.aliena LMG 22059T. Combined data from phenotypic, chemotaxonomic, phylogenetic and DNA-DNA relatedness studies demonstrated that strain TP162T is a representative of a novel species of the genus Pseudoalteromonas, for which we propose the name Pseudoalteromonas profundi sp. nov. (type strain TP162T=KACC 18554T=CGMCC 1.15394T).
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Affiliation(s)
- De-Chao Zhang
- University of Chinese Academy of Sciences, Beijing 100049, PR China.,Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Yan-Xia Liu
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Hai-Jun Huang
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Jiang Wu
- College of Agronomy & Resources and Environment, Tianjin Agricultural University, Tianjin 300384, PR China
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9
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Tirloni E, Stella S, Gennari M, Colombo F, Bernardi C. American Lobsters ( Homarus Americanus) not Surviving During Air Transport: Evaluation of Microbial Spoilage. Ital J Food Saf 2016; 5:5620. [PMID: 27800442 PMCID: PMC5076735 DOI: 10.4081/ijfs.2016.5620] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 01/25/2016] [Accepted: 01/26/2016] [Indexed: 12/29/2022] Open
Abstract
Eighteen American lobsters (Homarus americanus), dead during air transport, were analysed in order to evaluate the microbial population of meat, gills and gut: no specific studies have ever been conducted so far on the microbiological quality of American lobsters’ meats in terms of spoilage microbiota. The meat samples showed very limited total viable counts, in almost all the cases below the level of 6 Log CFU/g, while higher loads were found, as expected, in gut and gills, the most probable source of contamination. These data could justify the possibility to commercialise these not-surviving subjects, without quality concerns for the consumers. Most of the isolates resulted to be clustered with type strains of Pseudoalteromonas spp. (43.1%) and Photobacterium spp. (24.1%), and in particular to species related to the natural marine environment. The distribution of the genera showed a marked inhomogeneity among the samples. The majority of the isolates identified resulted to possess proteolytic (69.3%) and lipolytic ability (75.5%), suggesting their potential spoilage ability. The maintanance of good hygienical practices, especially during the production of ready-to-eat lobsters-based products, and a proper storage could limit the possible replication of these microorganisms.
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Affiliation(s)
- Erica Tirloni
- Department of Health, Animal Science and Food Safety, University of Milan , Milan, Italy
| | - Simone Stella
- Department of Health, Animal Science and Food Safety, University of Milan , Milan, Italy
| | - Mario Gennari
- Department of Health, Animal Science and Food Safety, University of Milan , Milan, Italy
| | - Fabio Colombo
- Department of Health, Animal Science and Food Safety, University of Milan , Milan, Italy
| | - Cristian Bernardi
- Department of Health, Animal Science and Food Safety, University of Milan , Milan, Italy
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10
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Satheesh S, Ba-akdah MA, Al-Sofyani AA. Natural antifouling compound production by microbes associated with marine macroorganisms — A review. ELECTRON J BIOTECHN 2016. [DOI: 10.1016/j.ejbt.2016.02.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Emami K, Nelson A, Hack E, Zhang J, Green DH, Caldwell GS, Mesbahi E. MALDI-TOF Mass Spectrometry Discriminates Known Species and Marine Environmental Isolates of Pseudoalteromonas. Front Microbiol 2016; 7:104. [PMID: 26903983 PMCID: PMC4751257 DOI: 10.3389/fmicb.2016.00104] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 01/19/2016] [Indexed: 02/05/2023] Open
Abstract
The genus Pseudoalteromonas constitutes an ecologically significant group of marine Gammaproteobacteria with potential biotechnological value as producers of bioactive compounds and of enzymes. Understanding their roles in the environment and bioprospecting for novel products depend on efficient ways of identifying environmental isolates. Matrix Assisted Laser Desorption/Ionization-Time of Flight Mass Spectrometry (MALDI-TOF MS) biotyping has promise as a rapid and reliable method of identifying and distinguishing between different types of bacteria, but has had relatively limited application to marine bacteria and has not been applied systematically to Pseudoalteromonas. Therefore, we constructed a MALDI-TOF MS database of 31 known Pseudoalteromonas species, to which new isolates can be compared by MALDI-TOF biotyping. The ability of MALDI-TOF MS to distinguish between species was scrutinized by comparison with 16S rRNA gene sequencing. The patterns of similarity given by the two approaches were broadly but not completely consistent. In general, the resolution of MALDI-TOF MS was greater than that of 16S rRNA gene sequencing. The database was tested with 13 environmental Pseudoalteromonas isolates from UK waters. All of the test strains could be identified to genus level by MALDI-TOF MS biotyping, but most could not be definitely identified to species level. We conclude that several of these isolates, and possibly most, represent new species. Thus, further taxonomic investigation of Pseudoalteromonas is needed before MALDI-TOF MS biotyping can be used reliably for species identification. It is, however, a powerful tool for characterizing and distinguishing among environmental isolates and can make an important contribution to taxonomic studies.
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Affiliation(s)
- Kaveh Emami
- Centre for Bacterial Cell Biology, Institute for Cell and Molecular Biosciences, Newcastle University Newcastle upon Tyne, UK
| | - Andrew Nelson
- Faculty of Health and Life Sciences, Northumbria University Newcastle upon Tyne, UK
| | - Ethan Hack
- School of Biology, Newcastle University Newcastle upon Tyne, UK
| | - Jinwei Zhang
- Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, College of Life Sciences, University of Dundee Dundee, UK
| | - David H Green
- Microbial and Molecular Biology, Scottish Association for Marine Science, Scottish Marine Institute Oban, UK
| | - Gary S Caldwell
- School of Marine Science and Technology, Newcastle University Newcastle upon Tyne, UK
| | - Ehsan Mesbahi
- Faculty of Science, Agriculture and Engineering, Newcastle University Newcastle upon Tyne, UK
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12
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Yoo AY, Park JK. Isolation and characterization of a serine protease-producing marine bacterium Marinomonas arctica PT-1. Bioprocess Biosyst Eng 2015; 39:307-14. [DOI: 10.1007/s00449-015-1514-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 11/24/2015] [Indexed: 10/22/2022]
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Draft Genome Sequence of Pseudoalteromonas sp. Strain R3, a Red-Pigmented l-Amino Acid Oxidase-Producing Bacterium. GENOME ANNOUNCEMENTS 2015; 3:3/6/e01339-15. [PMID: 26586885 PMCID: PMC4653787 DOI: 10.1128/genomea.01339-15] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Here, we report a draft 5.58-Mb genome sequence of Pseudoalteromonas sp. strain R3, isolated from an intertidal-zone sludge sample, which has l-amino acid oxidase activity. The genomics information of this strain will facilitate the study of l-amino acid oxidase, quorum sensing, and the relationship of the two.
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Pseudoalteromonas xishaensis sp. nov., isolated from Acanthaster planci in the Xisha islands. Antonie van Leeuwenhoek 2013; 104:779-85. [PMID: 24022397 DOI: 10.1007/s10482-013-9987-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 07/24/2013] [Indexed: 10/26/2022]
Abstract
A Gram-negative, aerobic, motile by means of single polar flagellum, short rod-shaped marine bacterium, designated strain E418T, was isolated from the spines on the body surface of starfish Acanthaster planci in the Xisha islands, China. Cells of strain E418T were found to grow optimally at pH 7–8, at 25–37 °C, and in the presence of 2–5 % (w/v) NaCl. Phylogenetic analysis based on the comparison of 16S rRNA gene sequences revealed that strain E418T is a member of the genus Pseudoalteromonas. The closest relative to this strain was found to be P. ruthenica LMG 19699T, with a similarity level of 97.7 %. DNA relatedness between the novel isolate and this phylogenetically related species was 57.4 %. Strain E418T decomposed Tween 80, gelatin, and casein, but was unable to decompose starch and grow on DNase Agar. The cellular fatty acid profile consisted of significant amounts of C16:1ω7c/C16:1ω6c, C18:1ω7c/C18:1ω6c, C16:0, and C17:1ω8c. The G+C content of DNA of this strain was determined to be 46.7 mol%. Phenotypic characteristics, phylogenetic analysis and DNA–DNA relatedness data suggest that strain E418T represents a novel species of the genus Pseudoalteromonas, for which the name Pseudoalteromonas xishaensis sp. nov. is proposed. The type strain of P. xishaensis is strain E418T (DSM 25588T = NBRC 108846T = CCTCC AB 2011177T).
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15
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Morya VK, Choi W, Kim EK. Isolation and characterization of Pseudoalteromonas sp. from fermented Korean food, as an antagonist to Vibrio harveyi. Appl Microbiol Biotechnol 2013; 98:1389-95. [PMID: 23793257 DOI: 10.1007/s00253-013-4937-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 04/13/2013] [Accepted: 04/16/2013] [Indexed: 10/26/2022]
Abstract
The microbial intervention for sustainable management of aquaculture, especially use of probiotics, is one of the most popular and practical approaches towards controlling pathogens. Vibrio harveyi is a well-known pathogenic bacterium, which is associated to a huge economic loss in the aquaculture system by causing vibriosis. The present study is crafted for screening and characterization of anti-Vibrio strains, which were isolated from various traditional fermented Korean foods. A total of 196 strains have been isolated from soybean paste (78 strains), red chili paste (49 strains), soy sauce (18 strains), jeotgal-a salted fish (34 strains), and the gazami crab-Portunus trituberculatus (17 strains). Fifteen strains showed an inhibitory effect on the growth of V. harveyi when subjected to coculture condition. Among the strains isolated, one has been identified as a significant anti-Vibrio strain. Further biochemical characterization and 16S rDNA sequencing revealed it as Pseudoalteromonas aliena, which had been deposited at the Korean Culture Center of Microorganisms (KCCM), Korea and designated as KCCM 11207P. The culture supernatants did not have any antimicrobial properties either in pure or in coculture condition. The culture supernatant was not toxic when supplemented to the swimming crab, Zoea, and Artemia larvae in aquaculture system. The results were very encouraging and showed a significant reduction in accumulated mortality. Here, we reported that pathogenic vibriosis can be controlled by Pseudoalteromonas sp. under in vitro and in vivo conditions. The results indicated that the biotic treatment offers a promising alternative to the use of antibiotics in crab aquaculture.
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Affiliation(s)
- V K Morya
- National Bioactive Material Laboratory, Department of Biological Engineering, Inha University, Incheon, Republic of Korea, 402-751,
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16
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Nam E, Ahn J. Antarctic marine bacterium Pseudoalteromonas sp. KNOUC808 as a source of cold-adapted lactose hydrolyzing enzyme. Braz J Microbiol 2011; 42:927-36. [PMID: 24031708 PMCID: PMC3768794 DOI: 10.1590/s1517-838220110003000011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Revised: 11/07/2010] [Accepted: 01/31/2011] [Indexed: 11/27/2022] Open
Abstract
Psychrophilic bacteria, which grow on lactose as a carbon source, were isolated from Antarctic polar sea water. Among the psychrophilic bacteria isolated, strain KNOUC808 was able to grow on lactose at below 5°C, and showed 0.867 unit of o-nitrophenyl β-D-galactopyranoside(ONPG) hydrolyzing activity at 4°C. The isolate was gram-negative, rod, aerobic, catalase positive and oxidase positive. Optimum growth was done at 20°C, pH 6.8–7.2. The composition of major fatty acids in cell of KNOUC801 was C12:0 (5.48%), C12:0 3OH (9.21%), C16:0 (41.83%), C17:0 ω8 (7.24%) and C18:1 ω7 (7.04%). All these results together suggest that it is affiliated with Pseudoalteromonas genus. The 16S rDNA sequence corroborate the phenotypic tests and the novel strain was designated as Pseudoalteromonas sp. KNOUC808. The optimum temperature and pH for lactose hydrolyzing enzyme was 20°C and 7.8, respectively. The enzyme was stable at 4°C for 7 days, but its activity decreased to about 50% of initial activity at 37°C in 7 days.
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Affiliation(s)
- Eunsook Nam
- Deptartment of Chemical & Biomolecular Engineering, Sogang University , Seoul 121-742 , Republic of Korea
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17
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Oh YS, Park AR, Lee JK, Lim CS, Yoo JS, Roh DH. Pseudoalteromonas donghaensis sp. nov., isolated from seawater. Int J Syst Evol Microbiol 2010; 61:351-355. [PMID: 20228210 DOI: 10.1099/ijs.0.022541-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-negative, rod-shaped, motile and aerobic bacterium, designated strain HJ51(T), was isolated from a seawater sample from the East Sea, near South Korea. The isolate grew slowly at 4 °C, was able to grow at 40 °C, required NaCl and grew optimally at pH 6.5-7.0. The G+C content of the genomic DNA was 41.8 mol%. The major fatty acids were summed feature 4 (C(16 : 1)ω7c and/or iso-C(15 : 0) 2-OH), C(16 : 0) and summed feature 7 (C(18 : 1)ω7c, C(18 : 1)ω9t and/or C(18 : 1)ω12t). Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain HJ51(T) belonged to the genus Pseudoalteromonas and had 91.7-98.9 % 16S rRNA gene sequence similarity with type strains of species of the genus Pseudoalteromonas. Strain HJ51(T) had 7.2 % DNA-DNA relatedness with Pseudoalteromonas mariniglutinosa DSM 15203(T) and 12.9 % with Pseudoalteromonas prydzensis DSM 14232(T). On the basis of the phenotypic, phylogenetic and genomic data, strain HJ51(T) represents a novel species of the genus Pseudoalteromonas, for which the name Pseudoalteromonas donghaensis sp. nov. is proposed. The type strain is HJ51(T) (=KCTC 22219(T)=LMG 24469(T)).
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Affiliation(s)
- Yong-Sik Oh
- Department of Microbiology and Biotechnology Research Institute, Chungbuk National University, Cheongju 361-763, Chungbuk, Republic of Korea
| | - A-Rum Park
- Department of Microbiology and Biotechnology Research Institute, Chungbuk National University, Cheongju 361-763, Chungbuk, Republic of Korea
| | - Je-Kwan Lee
- Department of Microbiology and Biotechnology Research Institute, Chungbuk National University, Cheongju 361-763, Chungbuk, Republic of Korea
| | - Chae-Sung Lim
- Department of Microbiology and Biotechnology Research Institute, Chungbuk National University, Cheongju 361-763, Chungbuk, Republic of Korea
| | - Jae-Soo Yoo
- School of Electrical and Computer Engineering, Chungbuk National University, Cheongju 361-763, Chungbuk, Republic of Korea
| | - Dong-Hyun Roh
- Department of Microbiology and Biotechnology Research Institute, Chungbuk National University, Cheongju 361-763, Chungbuk, Republic of Korea
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18
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Xu XW, Wu YH, Wang CS, Gao XH, Wang XG, Wu M. Pseudoalteromonas lipolytica sp. nov., isolated from the Yangtze River estuary. Int J Syst Evol Microbiol 2009; 60:2176-2181. [PMID: 19897616 DOI: 10.1099/ijs.0.017673-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A strictly aerobic, Gram-negative, non-pigmented bacterial strain, designated LMEB 39(T), was isolated from a seawater sample collected from the Yangtze River estuary near the East China Sea and was examined physiologically, chemotaxonomically and phylogenetically. The novel isolate was motile by a single polar flagellum and positive for nitrate reduction and decomposition of casein, gelatin, Tween 20 and Tween 80, but negative for indole production. Chemotaxonomic analysis revealed ubiquinone-8 as the predominant respiratory quinone and phosphatidylethanolamine and phosphatidylglycerol as major polar lipids. The major fatty acids were C(16 : 1) ω 7c/iso-C(15 : 0) 2-OH, C(16 : 0), C(18 : 1) ω 7c, C(12 : 0) 3-OH, C(17 : 1)ω 8c and C(17 : 0). The genomic DNA G+C content was 42.3 mol%. Comparative 16S rRNA gene sequence analysis revealed that the isolate belongs to the genus Pseudoalteromonas. Strain LMEB 39(T) exhibited the closest phylogenetic affinity to Pseudoalteromonas byunsanensis JCM 12483(T) (97.4 % sequence similarity). The DNA-DNA reassociation values between strain LMEB 39(T) and P. byunsanensis JCM 12483(T) and Pseudoalteromonas undina DSM 6065(T) (97.2 % sequence similarity) were 31.7 and 30.3 %, respectively. On the basis of phenotypic and genotypic data, strain LMEB 39(T) represents a novel species of the genus Pseudoalteromonas, for which the name Pseudoalteromonas lipolytica sp. nov. is proposed; the type strain is LMEB 39(T) (=CGMCC 1.8499(T)=JCM 15903(T)).
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Affiliation(s)
- Xue-Wei Xu
- Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China.,Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, PR China
| | - Yue-Hong Wu
- Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China.,Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, PR China
| | - Chun-Sheng Wang
- Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China.,Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, PR China
| | - Xiao-Hui Gao
- Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China.,Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, PR China
| | - Xiao-Gu Wang
- Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China.,Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, PR China
| | - Min Wu
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
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Al Khudary R, Stösser NI, Qoura F, Antranikian G. Pseudoalteromonas arctica sp. nov., an aerobic, psychrotolerant, marine bacterium isolated from Spitzbergen. Int J Syst Evol Microbiol 2008; 58:2018-24. [PMID: 18768597 DOI: 10.1099/ijs.0.64963-0] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel aerobic, psychrotolerant marine bacterium was isolated at 4 degrees C from seawater samples collected from Spitzbergen in the Arctic. The strain was a polar-flagellated, Gram-negative bacterium that grew optimally at 10-15 degrees C and pH 7-8 in media containing 2-3% NaCl (w/v), using various carbohydrates and organic acids as substrates. The main fatty acid components included 16:0 (12.7% of total fatty acids), straight-chain saturated fatty acid methyl ester (FAME) and 16:1omega7c (40.2%) monounsaturated FAME. Phylogenetic analysis revealed a close relationship (99% 16S rRNA gene sequence similarity) between the novel isolate and Pseudoalteromonas elyakovii KMM 162T and some other species of the genus Pseudoalteromonas. The DNA G+C content of the novel strain was 39 mol%. DNA-DNA hybridization showed only 47.6% DNA-DNA relatedness with P. elyakovii KMM 162T, 44.2% with Pseudoalteromonas distincta KMM 638T and 22.6% with Pseudoalteromonas nigrifaciens NCIMB 8614T. Based on phylogenetic and phenotypic characteristics, this isolate represents a novel species of the genus Pseudoalteromonas for which the name Pseudoalteromonas arctica is proposed; the type strain is A 37-1-2T (=LMG 23753T=DSM 18437T).
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Affiliation(s)
- Rami Al Khudary
- Institute of Technical Microbiology, Hamburg University of Technology, Kasernenstr. 12, 21073 Hamburg, Germany
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Bowman JP. Bioactive compound synthetic capacity and ecological significance of marine bacterial genus pseudoalteromonas. Mar Drugs 2007; 5:220-41. [PMID: 18463726 PMCID: PMC2365693 DOI: 10.3390/md504220] [Citation(s) in RCA: 209] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2007] [Accepted: 12/14/2007] [Indexed: 02/01/2023] Open
Abstract
The genus Pseudoalteromonas is a marine group of bacteria belonging to the class Gammaproteobacteria that has come to attention in the natural product and microbial ecology science fields in the last decade. Pigmented species of the genus have been shown to produce an array of low and high molecular weight compounds with antimicrobial, anti-fouling, algicidal and various pharmaceutically-relevant activities. Compounds formed include toxic proteins, polyanionic exopolymers, substituted phenolic and pyrolle-containing alkaloids, cyclic peptides and a range of bromine-substituted compounds. Ecologically, Pseudoalteromonas appears significant and to date has been shown to influence biofilm formation in various marine econiches; involved in predator-like interactions within the microbial loop; influence settlement, germination and metamorphosis of various invertebrate and algal species; and may also be adopted by marine flora and fauna as defensive agents. Studies have been so far limited to a relatively small subset of strains compared to the known diversity of the genus suggesting that many more discoveries of novel natural products as well as ecological connections these may have in the marine ecosystem remain to be made.
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Affiliation(s)
- John P Bowman
- Tasmania Institute of Agricultural Research, School of Agricultural Science, University of Tasmania, Sandy Bay, Private Bag 54, Hobart, Tasmania, 7001, Australia.
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Nam YD, Chang HW, Park JR, Kwon HY, Quan ZX, Park YH, Lee JS, Yoon JH, Bae JW. Pseudoalteromonas marina sp. nov., a marine bacterium isolated from tidal flats of the Yellow Sea, and reclassification of Pseudoalteromonas sagamiensis as Algicola sagamiensis comb. nov. Int J Syst Evol Microbiol 2007; 57:12-18. [PMID: 17220433 DOI: 10.1099/ijs.0.64523-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two Gram-negative, motile and strictly aerobic marine bacteria were isolated from a tidal flat sediment sample obtained from Dae-Chun, Chung-Nam, Korea. They were preliminarily identified as Pseudoalteromonas-like bacteria, based on 16S rRNA gene sequence analysis showing nearly identical sequences (>99.7 % sequence similarity) and the highest similarity (98.4 %) to the species Pseudoalteromonas undina. Some phenotypic features of the newly isolated strains were similar to those of members of the genus Pseudoalteromonas, but several physiological and chemo-taxonomical properties readily distinguished the new isolates from previously described species. DNA-DNA hybridization with type strains of phylogenetically closely related species demonstrated that the isolates represent a novel Pseudoalteromonas species, for which the name Pseudoalteromonas marina sp. nov. is proposed, with the type strain mano4(T) (=KCTC 12242(T)=DSM 17587(T)). In addition, on the basis of this study and polyphasic data obtained from previous work, it is proposed that the species Pseudoalteromonas sagamiensis should be reclassified as Algicola sagamiensis comb. nov. and that strain B-10-31(T) (=DSM 14643(T)=JCM 11461(T)) be designated the type strain.
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Affiliation(s)
- Young-Do Nam
- University of Science and Technology, Daejeon 305-333, Korea
- Biological Resource Center, KRIBB, Daejeon 305-806, Korea
| | - Ho-Won Chang
- Biological Resource Center, KRIBB, Daejeon 305-806, Korea
| | - Ja Ryeong Park
- Biological Resource Center, KRIBB, Daejeon 305-806, Korea
| | - Hyuk-Yong Kwon
- Biological Resource Center, KRIBB, Daejeon 305-806, Korea
| | | | - Yong-Ha Park
- Yeungnam University, Gyeongsangbuk-do 712-749, Korea
| | - Jung-Sook Lee
- Biological Resource Center, KRIBB, Daejeon 305-806, Korea
| | - Jung-Hoon Yoon
- Biological Resource Center, KRIBB, Daejeon 305-806, Korea
| | - Jin-Woo Bae
- Environmental Biotechnology National Core Research Center, Gyeongsang National University, Jinju 660-701, Korea
- University of Science and Technology, Daejeon 305-333, Korea
- Biological Resource Center, KRIBB, Daejeon 305-806, Korea
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Park YD, Baik KS, Yi H, Bae KS, Chun J. Pseudoalteromonas byunsanensis sp. nov., isolated from tidal flat sediment in Korea. Int J Syst Evol Microbiol 2006; 55:2519-2523. [PMID: 16280520 DOI: 10.1099/ijs.0.63750-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-negative, motile, strictly aerobic, violet-pigment-producing bacterium, designated strain FR1199T, was isolated from tidal flat sediment of Byunsan, South Korea. Phylogenetic analysis of the 16S rRNA gene sequence revealed that strain FR1199T represents a distinct line of descent within the genus Pseudoalteromonas. The phenotypic features of strain FR1199T were similar to those of Pseudoalteromonas phenolica and Pseudoalteromonas luteoviolacea, but several physiological and chemotaxonomical properties readily distinguished strain FR1199T from these species. Major fatty acids were straight-chain saturated (C(16 : 0)) and monounsaturated C(18 : 1)omega7c fatty acids. The DNA G+C content was 39 mol%. On the basis of polyphasic evidence, it is concluded that the isolate represents a novel species within the genus Pseudoalteromonas, for which the name Pseudoalteromonas byunsanensis sp. nov. is proposed. The type strain is FR1199T (=JCM 12483T=KCTC 12274T).
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Affiliation(s)
- Yoon-Dong Park
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Kwanak-gu, Seoul 151-742, Republic of Korea
| | - Keun Sik Baik
- Department of Biology, College of Natural Sciences, Sunchon National University, Sunchon 540-742, Republic of Korea
| | - Hana Yi
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Kwanak-gu, Seoul 151-742, Republic of Korea
| | - Kyung Sook Bae
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology, Taejon 305-600, Republic of Korea
| | - Jongsik Chun
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Kwanak-gu, Seoul 151-742, Republic of Korea
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Nordmark EL, Perepelov AV, Shashkov AS, Nazarenko EL, Gorshkova RP, Ivanova EP, Widmalm G. Structure of an acidic polysaccharide from the marine bacterium Pseudoalteromonas aliena type strain KMM 3562T containing two residues of l-serine in the repeating unit. Carbohydr Res 2005; 340:1483-7. [PMID: 15882858 DOI: 10.1016/j.carres.2005.03.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2005] [Revised: 03/30/2005] [Accepted: 03/31/2005] [Indexed: 11/24/2022]
Abstract
The structure of an acidic polysaccharide from Pseudoalteromonas aliena type strain KMM 3562(T) has been elucidated. The polysaccharide was studied by component analysis, (1)H and (13)C NMR spectroscopy, including 2D NMR experiments. A (1)H, (13)C band-selective constant-time heteronuclear multiple-bond connectivity experiment was used to determine amide linkages, between serine and uronic acid (UA) residues, via (3)J(H,C) correlations between Ser-alphaH and UA-C-6. It was found that the polysaccharide consists of pentasaccharide repeating units with the following structure: [carbohydrate structure]; see text.
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Affiliation(s)
- Eva-Lisa Nordmark
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, Sweden
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