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  • 1
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    Pseudorhodobacter antarcticus sp. nov., isolated from Antarctic intertidal sandy sediment, and emended description of the genus Pseudorhodobacter Uchino et al. 2002 emend. Jung et al. 2012
    Microbiology Society ; 2013
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 63, No. Pt_3 ( 2013-03-01), p. 849-854
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 63, No. Pt_3 ( 2013-03-01), p. 849-854
    Abstract: A Gram-negative, aerobic, non-motile, pink-pigmented and rod-shaped strain, designated ZS3-33 T , was isolated from Antarctic intertidal sandy sediment. The strain grew optimally at 15 °C and with 1.0 % (w/v) NaCl. It reduced nitrate to nitrite and hydrolysed Tween 20. It could not produce bacteriochlorophyll a . The predominant cellular fatty acid was C 18 : 1 ω7 c and the predominant respiratory quinone was Q-10. The major polar lipids were phosphatidylglycerol, phosphatidylcholine, two unidentified aminophospholipids and an unidentified aminolipid. Analyses of 16S rRNA gene sequences revealed that strain ZS3-33 T belonged to the genus Pseudorhodobacter , showing 97.4 % similarity to the type strain of Pseudorhodobacter ferrugineus and 95.3 % similarity to the type strain of Pseudorhodobacter aquimaris . Levels of gyrB gene sequence similarity between strain ZS3-33 T and the type strains of P. ferrugineus and P. aquimaris were 87.6 and 81.7 %, respectively. DNA–DNA relatedness between strain ZS3-33 T and P. ferrugineus DSM 5888 T was 56.6 %. The genomic DNA G+C content of strain ZS3-33 T was 57.1 mol%. Based on data from this polyphasic study, strain ZS3-33 T represents a novel species of the genus Pseudorhodobacter , for which the name Pseudorhodobacter antarcticus sp. nov. is proposed. The type strain is ZS3-33 T ( = CGMCC 1.10836 T  = KCTC 23700 T ). An emended description of the genus Pseudorhodobacter Uchino et al. 2002 emend. Jung et al. 2012 is also proposed.
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijs.0.042184-0
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2013
    detail.hit.zdb_id: 215062-1
    detail.hit.zdb_id: 2056611-6
    SSG: 12
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  • 2
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    Marinobacter antarcticus sp. nov., a halotolerant bacterium isolated from Antarctic intertidal sandy sediment
    Microbiology Society ; 2012
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 62, No. Pt_8 ( 2012-08-01), p. 1838-1844
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 62, No. Pt_8 ( 2012-08-01), p. 1838-1844
    Abstract: A Gram-staining-negative, aerobic, motile, oxidase- and catalase-positive, rod-shaped strain, designated ZS2-30 T , was isolated from Antarctic intertidal sandy sediment. The strain grew at 4–35 °C (optimum, 25 °C) and in 0–25 % (w/v) NaCl (optimum, 3.0–4.0 %). It could reduce nitrate to nitrite and hydrolyse Tween 80. The predominant cellular fatty acids of strain ZS2-30 T were summed feature 3 (C 16 : 1 ω7 c and/or C 16 : 1 ω6 c ), C 16 : 0 , C 18 : 1 ω9 c , C 16 : 1 ω9 c , C 12 : 0 3-OH and C 12 : 0 . The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol and an unidentified aminophospholipid. The genomic DNA G+C content of strain ZS2-30 T was 55.8 mol%. Analyses of 16S rRNA gene sequences revealed that strain ZS2-30 T was affiliated with the genus Marinobacter . It showed highest 16S rRNA gene sequence similarities to the type strains of three species of the genus Marinobacter , namely Marinobacter maritimus (98.3 %), Marinobacter psychrophilus (98.1 %) and Marinobacter goseongensis (97.1 %), but the DNA–DNA relatedness values between strain ZS2-30 T and the above three species were all lower than 45 %. Moreover, strain ZS2-30 T could be distinguished from closely related species of the genus Marinobacter by various phenotypic properties. Based on this taxonomic study using a polyphasic approach, strain ZS2-30 T is considered to represent a novel species in the genus Marinobacter , for which the name Marinobacter antarcticus sp. nov. is proposed. The type strain of Marinobacter antarcticus is ZS2-30 T ( = CGMCC 1.10835 T  = KCTC 23684 T ).
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijs.0.035774-0
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2012
    detail.hit.zdb_id: 215062-1
    detail.hit.zdb_id: 2056611-6
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  • 3
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    Structure and Ecological Roles of a Novel Exopolysaccharide from the Arctic Sea Ice Bacterium Pseudoalteromonas sp. Strain SM20310
    American Society for Microbiology ; 2013
    In:  Applied and Environmental Microbiology Vol. 79, No. 1 ( 2013-01), p. 224-230
    Details
    In: Applied and Environmental Microbiology, American Society for Microbiology, Vol. 79, No. 1 ( 2013-01), p. 224-230
    Abstract: The structure and ecological roles of the exopolysaccharides (EPSs) from sea ice microorganisms are poorly studied. Here we show that strain SM20310, with an EPS production of 567 mg liter −1 , was screened from 110 Arctic sea ice isolates and identified as a Pseudoalteromonas strain. The EPS secreted by SM20310 was purified, and its structural characteristics were studied. The predominant repeating unit of this EPS is a highly complicated α-mannan with a molecular mass greater than 2 × 10 6 Da. The backbone of the EPS consists of 2-α-, 6-α-mannosyl residues, in which a considerable part of the 6-α-mannosyl residues are branched at the 2 position with either single t -mannosyl residues or two mannosyl residues. The structure of the described EPS is different from the structures of EPSs secreted by other marine bacteria. Analysis of the ecological roles of the identified EPS showed that the EPS could significantly enhance the high-salinity tolerance of SM20310 and improve the survival of SM20310 after freeze-thaw cycles. These results suggest that the EPS secreted by strain SM20310 enables the strain to adapt to the sea ice environment, which is characterized by low temperature, high salinity, and repeated freeze-thaw cycles. In addition to its functions in strain SM20310, this EPS also significantly improved the tolerance of Escherichia coli to freeze-thaw cycles, suggesting that it may have a universal impact on microorganism cryoprotection.
    Type of Medium: Online Resource
    ISSN: 0099-2240 , 1098-5336
    URL: Article
    DOI: 10.1128/AEM.01801-12
    RVK:
    WA 15000
    Language: English
    Publisher: American Society for Microbiology
    Publication Date: 2013
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    detail.hit.zdb_id: 1478346-0
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  • 4
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    Complete Genome Sequence of Seawater Bacterium Glaciecola nitratireducens FR1064 T
    American Society for Microbiology ; 2011
    In:  Journal of Bacteriology Vol. 193, No. 24 ( 2011-12-15), p. 7006-7007
    Details
    In: Journal of Bacteriology, American Society for Microbiology, Vol. 193, No. 24 ( 2011-12-15), p. 7006-7007
    Abstract: Glaciecola nitratireducens strain FR1064 T was isolated from seawater and described as a new species by Baik et al. in 2006. The genome size is about 1.01 to 1.26 Mb smaller than two reported Glaciecola genomes, indicating the gain or loss of large genome segments in the evolution of Glaciecola strains.
    Type of Medium: Online Resource
    ISSN: 0021-9193 , 1098-5530
    URL: Article
    DOI: 10.1128/JB.06296-11
    Language: English
    Publisher: American Society for Microbiology
    Publication Date: 2011
    detail.hit.zdb_id: 1481988-0
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  • 5
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    Puniceibacterium antarcticum gen. nov., sp. nov., isolated from seawater
    Microbiology Society ; 2014
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 64, No. Pt_5 ( 2014-05-01), p. 1566-1572
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 64, No. Pt_5 ( 2014-05-01), p. 1566-1572
    Abstract: A Gram-reaction-negative, aerobic, non-flagellated, rod-shaped bacterium, designated strain SM1211 T , was isolated from Antarctic seawater. The isolate grew at 4–35 °C and with 0–10 % (w/v) NaCl. It could produce bacteriochlorophyll a , but did not reduce nitrate to nitrite or hydrolyse DNA. Phylogenetic analysis of 16S rRNA gene sequences revealed that strain SM1211 T constituted a distinct phylogenetic line within the family Rhodobacteraceae and was closely related to species in the genera Litorimicrobium , Leisingera , Seohaeicola and Phaeobacter with 95.1–96.0 % similarities. The predominant cellular fatty acid was C 18 : 1 ω7 c . The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine, an unidentified aminolipid and two unidentified phospholipids. The genomic DNA G+C content of strain SM1211 T was 60.7 mol%. Based on the phylogenetic, chemotaxonomic and phenotypic data obtained in this study, strain SM1211 T is considered to represent a novel species in a new genus within the family Rhodobacteraceae , for which the name Puniceibacterium antarcticum gen. nov., sp. nov. is proposed. The type strain of Puniceibacterium antarcticum is SM1211 T ( = CCTCC AB 2013147 T  = KACC 16875 T ).
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijs.0.057695-0
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2014
    detail.hit.zdb_id: 215062-1
    detail.hit.zdb_id: 2056611-6
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  • 6
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    Antimicrobial peptaibols from Trichoderma pseudokoningii induce programmed cell death in plant fungal pathogens
    Microbiology Society ; 2012
    In:  Microbiology Vol. 158, No. 1 ( 2012-01-01), p. 166-175
    Details
    In: Microbiology, Microbiology Society, Vol. 158, No. 1 ( 2012-01-01), p. 166-175
    Type of Medium: Online Resource
    ISSN: 1350-0872 , 1465-2080
    URL: Article
    DOI: 10.1099/mic.0.052670-0
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2012
    detail.hit.zdb_id: 2008736-6
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  • 7
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    Comparative Genomics Provide Insights into Evolution of Trichoderma Nutrition Style
    Oxford University Press (OUP) ; 2014
    In:  Genome Biology and Evolution Vol. 6, No. 2 ( 2014-2), p. 379-390
    Details
    In: Genome Biology and Evolution, Oxford University Press (OUP), Vol. 6, No. 2 ( 2014-2), p. 379-390
    Type of Medium: Online Resource
    ISSN: 1759-6653
    URL: Article
    DOI: 10.1093/gbe/evu018
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2014
    detail.hit.zdb_id: 2495328-3
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  • 8
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    Characterization of a cryptic plasmid pSM429 and its application for heterologous expression in psychrophilic Pseudoalteromonas
    Springer Science and Business Media LLC ; 2011
    In:  Microbial Cell Factories Vol. 10, No. 1 ( 2011-12)
    Details
    In: Microbial Cell Factories, Springer Science and Business Media LLC, Vol. 10, No. 1 ( 2011-12)
    Abstract: Pseudoalteromonas is an important genus widespread in marine environment, and a lot of psychrophilic Pseudoalteromonas strains thrive in deep sea and polar sea. By now, there are only a few genetic systems for Pseudoalteromonas reported and no commercial Pseudoalteromonas genetic system is available, which impedes the study of Pseudoalteromonas , especially for psychrophilic strains. The aim of this study is to develop a heterologous expression system for psychrophilic Pseudoalteromonas . Results A cryptic plasmid pSM429 isolated from psychrophilic Pseudoalteromonas sp. BSi20429 from the Arctic sea ice, was sequenced and characterized. The plasmid pSM429 is 3874 bp in length, with a G+C content of 28%. Four putative open reading frames (ORFs) were identified on pSM429. Based on homology, the ORF4 was predicted to encode a replication initiation (Rep) protein. A shuttle vector ( Escherichia coli, Pseudoalteromonas ), pWD, was constructed by ligating pSM429 and pUC19 and inserting a chloramphenicol acetyl transferase (CAT) cassette conferring chloramphenicol resistance. To determine the minimal replicon of pSM429 and to check the functionality of identified ORFs, various pWD derivatives were constructed. All derivatives except the two smallest ones were shown to allow replication in Pseudoalteromonas sp. SM20429, a plasmid-cured strain of Pseudoalteromonas sp. BSi20429, suggesting that the orf4 and its flanking intergenic regions are essential for plasmid replication. Although not essential, the sequence including some repeats between orf1 and orf2 plays important roles in segregational stability of the plasmid. With the aid of pWD-derived plasmid pWD2, the erythromycin resistance gene and the cd gene encoding the catalytic domain of a cold-adapted cellulase were successfully expressed in Pseudoalteromonas sp. SM20429. Conclusions Plasmid pSM429 was isolated and characterized, and the regions essential for plasmid replication and stability were determined, helping the development of pSM429-based shuttle vectors. The shuttle vectors pWD and its derivatives could be used as cloning vectors for Pseudoalteromonas , offering new perspectives in the genetic manipulation of Pseudoalteromonas strains. With the aid of pWD-derived vector and its host, the erythromycin resistance gene and the cd gene of a cold-adapted protein were successfully expressed, indicating that the potential use of this system for recombinant protein production, especially for cold-adapted proteins.
    Type of Medium: Online Resource
    ISSN: 1475-2859
    URL: Article
    DOI: 10.1186/1475-2859-10-30
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2011
    detail.hit.zdb_id: 2091377-1
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  • 9
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    Neptunomonas qingdaonensis sp. nov., isolated from intertidal sand
    Microbiology Society ; 2013
    In:  International Journal of Systematic and Evolutionary Microbiology Vol. 63, No. Pt_5 ( 2013-05-01), p. 1673-1677
    Details
    In: International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 63, No. Pt_5 ( 2013-05-01), p. 1673-1677
    Abstract: A Gram-negative, motile, aerobic, oxidase- and catalase-positive rod, designated P10-2-4 T , was isolated from an intertidal sand sample collected from a coastal area of Qingdao (Yellow Sea), China. The isolate reduced nitrate to nitrite and grew at 4–33 °C and with 0.5–12 % (w/v) NaCl. The predominant cellular fatty acids were summed feature 3 (C 16 : 1 ω7 c and/or iso-C 15 : 0 2-OH), C 18 : 1 ω7 c and C 16 : 0 . The major polar lipids were phosphatidylethanolamine and phosphatidylglycerol. The major respiratory quinone was Q-8. The genomic DNA G+C content was 45.1 %. Phylogenetic analysis of 16S rRNA gene sequences revealed that strain P10-2-4 T belonged to the genus Neptunomonas . The isolate shared the highest 16S rRNA gene sequence similarity (98.1 %) with Neptunomonas japonica JAMM 0745 T and 96.9, 96.5 and 95.9 % sequence similarities with N. antarctica S3-22 T , N. concharum LHW37 T and N. naphthovorans NAG-2N-126 T , respectively, strains of the other three recognized species in the genus. DNA–DNA relatedness between strain P10-2-4 T and N. japonica JCM 14595 T was 35.6 %. Furthermore, strain P10-2-4 T could be distinguished from the representatives of the genus Neptunomonas by a combination of phenotypic characteristics, such as temperature and NaCl concentration for growth, nitrate reduction, DNase activity and assimilation of substrates. The data from this study suggests that strain P10-2-4 T represents a novel species in the genus Neptunomonas , for which the name Neptunomonas qingdaonensis sp. nov. is proposed. The type strain is P10-2-4 T ( = CGMCC 1.10971 T  = KCTC 23686 T ).
    Type of Medium: Online Resource
    ISSN: 1466-5026 , 1466-5034
    URL: Article
    DOI: 10.1099/ijs.0.041970-0
    Language: English
    Publisher: Microbiology Society
    Publication Date: 2013
    detail.hit.zdb_id: 215062-1
    detail.hit.zdb_id: 2056611-6
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  • 10
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    Characterization of Bacterial Polysaccharide Capsules and Detection in the Presence of Deliquescent Water by Atomic Force Microscopy
    American Society for Microbiology ; 2012
    In:  Applied and Environmental Microbiology Vol. 78, No. 9 ( 2012-05), p. 3476-3479
    Details
    In: Applied and Environmental Microbiology, American Society for Microbiology, Vol. 78, No. 9 ( 2012-05), p. 3476-3479
    Abstract: We detected polysaccharide capsules from Zunongwangia profunda SM-A87 with atomic force microscopy (AFM). The molecular organization of the capsules at the single-polysaccharide-chain level was reported. Furthermore, we found that with ScanAsyst mode the polysaccharide capsules could be detected even in the presence of deliquescent water covering the capsule.
    Type of Medium: Online Resource
    ISSN: 0099-2240 , 1098-5336
    URL: Article
    DOI: 10.1128/AEM.00207-12
    RVK:
    WA 15000
    Language: English
    Publisher: American Society for Microbiology
    Publication Date: 2012
    detail.hit.zdb_id: 223011-2
    detail.hit.zdb_id: 1478346-0
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