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  • 1
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    Vicingus serpentipes gen. nov., sp. nov., a new member of the Flavobacteriales from the North Sea (2018)
    Microbiology Society
    In:  International Journal of Systematic and Evolutionary Microbiology, 68 (1). pp. 333-340.
    Details
    Publication Date: 2021-02-08
    Description: A new member of the Flavobacteriales was isolated from the surface of a stone collected on the German North Sea shore. The bacterium, strain ANORD5T, is a mesophilic, chemoheterotrophic aerobic, typical marine bacterium. Optimal growth was observed at 20–30 °C, pH 7.0–8.5 and 1–2 % sea salt. The 16S rRNA gene sequence revealed a distant relationship with the representatives of the Cryomorphaceae , with less than 90 % sequence similarity. Strain ANORD5T forms a cluster together with Owenweeksia hongkongensis UST20020801T (89.9 %), Cryomorpha ignava 1-22T (87.9 %), Luteibaculum oceani CC-AMWY-103BT (88.1 %) and Phaeocystidibacter luteus PG2S01T (87.3 %). Strain ANORD5T has a low DNA G+C content (31 mol%). Based on morphological, physiological and phylogenetic data, strain ANORD5T is considered a type strain of a new species and a new genus of the family Cryomorphaceae for which the name Vicingus serpentipes is proposed. The type strain is ANORD5T (=NCIMB 15042T=DSM 103558T=MTCC 12686T).
    Type: Article , PeerReviewed
    Format: text
    Format: text
    DOI: 10.1099/ijsem.0.002509
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  • 2
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    Diacidene, a polyene dicarboxylic acid from a Micromonospora isolate from the German Wadden Sea (2012)
    VZN
    In:  Zeitschrift für Naturforschung C, Journal of Biosciences, 67c . pp. 445-450.
    Details
    Publication Date: 2019-09-23
    Description: Micromonospora sp. strain DB620 was isolated from a Wadden Sea sediment sample collected near Büsum (Germany) and is closely related (99% 16S-rRNA gene sequence similarity) to Micromonospora coxensis strain MTCC8093. It produced a new polyene dicarboxylic acid named diacidene (1) and in addition a derivative of chorismic acid, the known 3-[(1-carboxyvinyl)oxy]benzoic acid. The structure elucidation of 1 was achieved by applying different 1D and 2D NMR techniques as well as mass spectrometry and UV spectroscopy.
    Type: Article , PeerReviewed
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  • 3
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    Acetylcholinesterase Inhibitors from a Marine Fungus Talaromyces sp. Strain LF458 (2015)
    Springer
    In:  Marine Biotechnology, 17 (1). pp. 110-119.
    Details
    Publication Date: 2017-04-13
    Description: Two new oxaphenalenone dimers, talaromycesone A (1) and talaromycesone B (2), and a new isopentenyl xanthenone, talaroxanthenone (3), together with six known diphenyl ether derivatives, e.g., Δ1′,3′,-1′-dehydroxypenicillide (4), 1′,2′-dehydropenicillide (5), vermixocin A (6), vermixocin B (7), 3′-methoxy-1′2′-dehydropenicillide (8), and AS-186c (9), were isolated from the culture broth and mycelia of a marine fungus Talaromyces sp. strain LF458. Compound 2 represents the first example of 1-nor oxaphenalenone dimer carbon skeleton. All isolated compounds were subjected to bioactivity assays. Compounds 1, 2, and 9 exhibited potent antibacterial activities with IC50 3.70, 17.36, and 1.34 μM, respectively, against human pathogenic Staphylococcus strains. Compounds 1, 3, and 9 displayed potent acetylcholinesterase inhibitory activities with IC50 7.49, 1.61, and 2.60 μM, respectively. Interestingly, phosphodiesterase PDE-4B2 was inhibited by compounds 3 (IC50 7.25 μM) and 9 (IC50 2.63 μM).
    Type: Article , PeerReviewed
    Format: text
    Format: text
    DOI: 10.1007/s10126-014-9599-3
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  • 4
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    New phylogenetic lineages of the Spirochaetes phylum associated with Clathrina species (Porifera) (2010)
    Springer
    In:  Journal of Microbiology, 48 (4). pp. 411-418.
    Details
    Publication Date: 2018-01-19
    Description: Though spirochetes have been repeatedly found in marine sponges and other invertebrates, little attention has been paid to the specificity of this association. This study demonstrates that different genoand morphotypes of spirochetes can reside within the same sponge individual and develop in considerable numbers. Specimens of the calcareous sponge Clathrina clathrus collected from the Adriatic Sea off Rovinj (Croatia) were found to harbor spirochete-like bacteria, which were characterized by scanning electron microscopy (SEM), 16S rRNA gene analysis, and catalyzed reporter deposition fluorescence in situ hybridization (CARD-FISH). Two novel spirochete sequence types related to the Brachyspiraceae could be retrieved. By use of specifically designed CARD-FISH probes, the C. clathrus-associated sequences could be assigned to a linear and a helical spirochete morphotype. Both were located within the sponge mesohyl and resembled the spirochete-like cells identified by SEM. In addition, from a Clathrina sp., most likely C. coriacea, that originated from Indonesian coastal waters, four different spirochete type sequences were recovered. Two of these also affiliated with the Brachyspiraceae, the other two were found associated with the Spirochaetaceae, one with the genera Borrelia and Cristispira.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1007/s12275-010-0017-x
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  • 5
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    Spatial distribution of sponge-associated bacteria in the Mediterranean sponge Tethya aurantium (2007)
    Wiley
    In:  FEMS Microbiology Ecology, 59 (1). pp. 47-63.
    Details
    Publication Date: 2019-09-23
    Description: The local distribution of the bacterial community associated with the marine sponge Tethya aurantium Pallas 1766 was studied. Distinct bacterial communities were found to inhabit the endosome and cortex. Clear differences in the associated bacterial populations were demonstrated by denaturing gradient gel electrophoresis (DGGE) and analysis of 16S rRNA gene clone libraries. Specifically associated phylotypes were identified for both regions: a new phylotype of Flexibacteria was recovered only from the sponge cortex, while Synechococcus species were present mainly in the sponge endosome. Light conduction via radiate spicule bundles conceivably facilitates the unusual association of Cyanobacteria with the sponge endosome. Furthermore, a new monophyletic cluster of sponge-derived 16S rRNA gene sequences related to the Betaproteobacteria was identified using analysis of 16S rRNA gene clone libraries. Members of this cluster were specifically associated with both cortex and endosome of T. aurantium.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1111/j.1574-6941.2006.00217.x
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  • 6
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    Engyodontochones, Antibiotic Polyketides from the Marine FungusEngyodontium albumStrain LF069 (2016)
    Wiley
    In:  Chemistry - a European Journal, 22 (22). pp. 7452-7462.
    Details
    Publication Date: 2019-02-01
    Description: Six new (2, 4–8) and two known polyketides with a basic structure of an anthraquinone-xanthone were isolated from mycelia and culture broth of the fungus Engyodontium album strain LF069. The structures and relative configurations of these compounds were established by spectroscopic means, and their absolute configurations were defined mainly by comparison of quantum chemical TDDFT calculated and experimental ECD spectra. Compounds 2 and 4–8 were given the trivial names engyodontochone A (2) and B–F (4–8). Compounds 5–8 represent the first example of a 23,28 seco-beticolin carbon skeleton. The relative and absolute configurations of two known substances JBIR-97/98 (1) and JBIR-99 (3) were determined for the first time. All isolated compounds were subjected to bioactivity assays. Compounds 1–4 exhibited inhibitory activity against methicillin-resistant Staphylococcus aureus (MRSA) that was 10-fold stronger than chloramphenicol.
    Type: Article , PeerReviewed
    Format: text
    Format: text
    DOI: 10.1002/chem.201600430
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  • 7
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    Marine habitats as promising sources of novel microorganisms and new natural products with biotechnological applications (2008)
    Thieme
    In:  Planta Medica, 74 . PG89.
    Details
    Publication Date: 2019-02-28
    Type: Article , NonPeerReviewed
    Format: text
    DOI: 10.1055/s-0028-1084841
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  • 8
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    Sponge-specific bacterial associations in the Mediterranean sponge Chondrilla nucula (Demospongiae, Tetractinomorpha) (2007)
    Springer
    In:  Microbial Ecology, 54 (1). pp. 101-111.
    Details
    Publication Date: 2017-03-22
    Description: A stable and specific bacterial community was shown to be associated with the Mediterranean sponge Chondrilla nucula. The associated bacterial communities were demonstrated to be highly similar for all studied specimens regardless of sampling time and geographical region. In addition, analysis of 16S rDNA clone libraries revealed three constantly C. nucula-associated bacterial phylotypes belonging to the Acidobacteria, the Gamma- and Deltaproteobacteria present in sponge specimens from two Mediterranean regions with distinct water masses (Ligurian Sea and Adriatic Sea). For the first time, candidate division TM7 bacteria were found in marine sponges. A major part (79%) of the C. nucula-derived 16S rDNA sequences were closely related to other sponge-associated bacteria. Phylogenetic analysis identified 14 16S rRNA gene sequence clusters, seven of which consisted of exclusively sponge-derived sequences, whereas the other seven clusters contained additional environmental sequences. This study adds to a growing database on the stability and variability of microbial consortia associated with marine sponges.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1007/s00248-006-9177-y
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  • 9
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    A new member of the family Micromonosporaceae, Planosporangium flavigriseum gen. nov., sp. nov. (2008)
    Microbiology Society
    In:  International Journal of Systematic and Evolutionary Microbiology, 58 . pp. 1324-1331.
    Details
    Publication Date: 2017-05-29
    Description: A novel actinomycete, designated strain YIM 46034(T), was isolated from an evergreen broadleaved forest at Menghai, in southern Yunnan Province, China. Phenotypic characterization and 16S rRNA gene sequence analysis indicated that the strain belonged to the family Micromanosporaceae. Strain YIM 46034(T) showed more than 3% 16S rRNA gene sequence divergence from recognized species of genera in the family Micromonosporaceae. Characteristic features of strain YIM 46034(T) were the production of two types of spores, namely motile spores, which were formed in sporangia produced on substrate mycelia, and single globose spores, which were observed on short sporophores of the substrate mycelia. The cell wall contained meso-diaminopimelic acid, glycine, arabinose and xylose, which are characteristic components of cell-wall chemotype 11 of actinomycetes. Phosphatidylethanolamine was the major phospholipid (phospholipid type 11). Based on morphological, chemotaxonomic, phenotypic and genetic characteristics, strain YIM 46034(T) is considered to represent a novel species of a new genus in the family Micromonosporaceae, for which the name Planosporangium flavigriseum gen. nov., sp. nov. is proposed. The type strain of Planosporangium flavigriseum is YIM 46034(T) (=CCTCC AA 205013(T) =DSM 44991(T)).
    Type: Article , PeerReviewed
    Format: text
    Format: image
    DOI: 10.1099/ijs.0.65211-0
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  • 10
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    Kiloniella laminariae, gen. nov., sp. nov., a new alphaproteobacterium from the marine macroalga Laminaria saccharina (2009)
    Microbiology Society
    In:  International Journal of Systematic and Evolutionary Microbiology, 59 . pp. 350-356.
    Details
    Publication Date: 2019-09-23
    Description: A novel alphaproteobacterium, strain LD81(T), was isolated from the marine macroalga. Laminaria saccharina. The bacterium is mesophilic and shows a typical marine growth response. It is a chemoheterotrophic aerobe with the potential for denitrification. Growth optima are 25 degrees C, pH 5.5 and 3% NaCl. Strain LD81(T) has a unique phylogenetic position, not fitting any of the known families of the Alphaproteobacteria. The 16S rRNA gene sequence revealed a distant relationship to species of several orders of the Alphaproteobacteria, with less than 90% sequence similarity. Phylogenetically, strain LD81(T) is related to the type strains of Terasakiella pusilla (88.4% 16S rRNA gene sequence similarity) and the three Thalassospira species (88.9-89.2%. It forms a cluster with these bacteria and a novel as-yet undescribed isolate (KOPRI 13522; 96.6% sequence similarity). Strain LD81(T) has a relatively low DNA G + C content (51.1 mol%) and, due to its distant phylogenetic position from all other alphaprotecibacteria, strain LD81(T) (=NCIMB 14374(T) =JCM 14845(T)) is considered as the type strain of a novel species within a new genus, for which the name Kiloniella laminariae gen. nov., sp. nov. is proposed. The genus Kiloniella represents the type of the new family Kiloniellaceae fam. nov. and order Kiloniellales ord. nov.
    Type: Article , PeerReviewed
    Format: text
    Format: text
    DOI: 10.1099/ijs.0.001651-0
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