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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
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    DOI: 10.1099/ijsem.0.002509
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  • 2
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    A Novel Phytomyxean Parasite Associated with Galls on the Bull-Kelp Durvillaea antarctica (Chamisso) Hariot (2012)
    Public Library of Science
    In:  PLoS ONE, 7 (9). e45358.
    Details
    Publication Date: 2020-10-16
    Description: Durvillaea antarctica (Fucales, Phaeophyceae) is a large kelp of high ecological and economic significance in the Southern Hemisphere. In natural beds along the central coast of Chile (Pacific Ocean), abnormal growth characterized by evident gall development and discolorations of the fronds/thallus was observed. Analysing these galls by light microscopy and scanning electron microscopy revealed the presence of endophytic eukaryotes showing typical characteristics for phytomyxean parasites. The parasite developed within enlarged cells of the subcortical tissue of the host. Multinucleate plasmodia developed into many, single resting spores. The affiliation of this parasite to the Phytomyxea (Rhizaria) was supported by 18S rDNA data, placing it within the Phagomyxida. Similar microorganisms were already reported once 23 years ago, indicating that these parasites are persistent and widespread in D. antarctica beds for long times. The symptoms caused by this parasite are discussed along with the ecological and economic consequences. Phytomyxean parasites may play an important role in the marine ecosystem, but they remain understudied in this environment. Our results demonstrate for the first time the presence of resting spores in Phagomyxida, an order in which resting spores were thought to be absent making this the first record of a phagomyxean parasite with a complete life cycle so far, challenging the existing taxonomic concepts within the Phytomyxea. The importance of the here described resting spores for the survival and ecology of the phagomyxid parasite will be discussed together with the impact this parasite may have on 'the strongest seaweed of the world', which is an important habitat forming and economic resource from the Southern Hemisphere.
    Type: Article , PeerReviewed
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    DOI: 10.1371/journal.pone.0045358
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  • 3
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    Streptomyces sparsus, sp. nov., a novel member of the genus Streptomyces from saline and alkaline soil in China (2011)
    Microbiology Society
    In:  International Journal of Systematic and Evolutionary Microbiology, 61 (7). pp. 1601-1605. Date online first: 2010
    Details
    Publication Date: 2017-05-30
    Description: Salt and alkaline-tolerant actinomycete strain, YIM 90018T, was isolated from a saline and alkaline soil sample collected from Qinghai, China, and was then subjected to polyphasic taxonomy. Aerial hyphae of strain YIM 90018T were not produced on almost tested media except YIM 82# agar. Vegetative hyphae were abundant, developed well, and not fragmented. Straight or flexuous (Rectiflexibiles) spore chains. The strain grew well at 25% of MgCl2.6H2O and pH 10. All of these characters consistently assign the strain YIM 90018T to known species of the genus Streptomyces. Based on phylogenetic analysis of 16S rDNA, DNA-DNA hybridization, phenotypic characters and comparison with known species of the genus, strain YIM 90018T can be differentiated from all the validly described Streptomyces species. A novel species, Streptomyces sparsus sp. nov. is proposed. The type strain of the new species is YIM 90018T (CCTCC AA204019= DSM 41858T).
    Type: Article , PeerReviewed
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    DOI: 10.1099/ijs.0.020669-0
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  • 4
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    Identification of Habitat-Specific Biomes of Aquatic Fungal Communities Using a Comprehensive Nearly Full-Length 18S rRNA Dataset Enriched with Contextual Data (2015)
    Public Library of Science
    In:  PLoS ONE, 10 (7). e0134377.
    Details
    Publication Date: 2020-10-26
    Description: Molecular diversity surveys have demonstrated that aquatic fungi are highly diverse, and that they play fundamental ecological roles in aquatic systems. Unfortunately, comparative studies of aquatic fungal communities are few and far between, due to the scarcity of adequate datasets. We combined all publicly available fungal 18S ribosomal RNA (rRNA) gene sequences with new sequence data from a marine fungi culture collection. We further enriched this dataset by adding validated contextual data. Specifically, we included data on the habitat type of the samples assigning fungal taxa to ten different habitat categories. This dataset has been created with the intention to serve as a valuable reference dataset for aquatic fungi including a phylogenetic reference tree. The combined data enabled us to infer fungal community patterns in aquatic systems. Pairwise habitat comparisons showed significant phylogenetic differences, indicating that habitat strongly affects fungal community structure. Fungal taxonomic composition differed considerably even on phylum and class level. Freshwater fungal assemblage was most different from all other habitat types and was dominated by basal fungal lineages. For most communities, phylogenetic signals indicated clustering of sequences suggesting that environmental factors were the main drivers of fungal community structure, rather than species competition. Thus, the diversification process of aquatic fungi must be highly clade specific in some cases.The combined data enabled us to infer fungal community patterns in aquatic systems. Pairwise habitat comparisons showed significant phylogenetic differences, indicating that habitat strongly affects fungal community structure. Fungal taxonomic composition differed considerably even on phylum and class level. Freshwater fungal assemblage was most different from all other habitat types and was dominated by basal fungal lineages. For most communities, phylogenetic signals indicated clustering of sequences suggesting that environmental factors were the main drivers of fungal community structure, rather than species competition. Thus, the diversification process of aquatic fungi must be highly clade specific in some cases.
    Type: Article , PeerReviewed
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    DOI: 10.1371/journal.pone.0134377
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  • 5
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    Polaribacter septentrionalilitoris sp. nov., isolated from the biofilm of a stone from the North Sea (2020)
    Microbiology Society
    Details
    Publication Date: 2023-02-08
    Description: A new member of the family Flavobacteriaceae was isolated from the biofilm of a stone at Nordstrand, a peninsula at the German North Sea shore. Phylogenetic analysis of the 16S rRNA gene sequence showed that strain ANORD1T was most closely related to the validly described type strains Polaribacter porphyrae LNM-20T (97.0 %) and Polaribacter reichenbachii KMM 6386T (96.9 % 16S rRNA gene sequence similarity) and clustered with Polaribacter gangjinensis K17-16T (96.0 %). Strain ANORD1T was determined to be mesophilic, Gram-negative, non-motile and strictly aerobic. Optimal growth was observed at 20–30 °C, within a salinity range of 2–7 % sea salt and from pH 7–10. Like other type strains of the genus Polaribacter, ANORD1T was tested negative for flexirubin-type pigments, while carotenoid-type pigments were detected. The DNA G+C content of strain ANORD1T was 30.6 mol%. The sole respiratory quinone detected was menaquinone 6 (MK-6). The major fatty acids identified were C15 : 0, iso-C15 : 0, C15 : 1 ω6c and iso-C15 : 0 3-OH. Based on the polyphasic approach, strain ANORD1T represents a novel species in the genus Polaribacter, with the name Polaribacter septentrionalilitoris sp. nov. being proposed. The type strain is ANORD1T (=DSM 110039T=NCIMB 15081T=MTCC 12685T).
    Type: Article , PeerReviewed
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  • 6
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    Actinomycetospora chiangmaiensis gen. nov., sp. nov., a new member of the family Pseudonocardiaceae (2008)
    Microbiology Society
    In:  International Journal of Systematic and Evolutionary Microbiology, 58 . pp. 408-413.
    Details
    Publication Date: 2017-05-29
    Description: A novel actinonmycete strain, YIM 0006(T), was isolated from soil of a tropical rainforest in northern Thailand. The isolate displayed the following characteristics: aerial mycelium is absent, short spore chains are formed directly on the substrate mycelium, contains meso-diaminopimelic acid, arabinose and galactose (cell-wall chemotype IV), the diagnostic phospholipid is phosphaticlylcholine, MK-9(H-4) is the predominant menaquinone and the G + C content of the genomic DNA is 69.0 mol%. Phylogenetic analysis and phenotypic characteristics showed that strain YIM 0006(T) belongs to the family Pseudonocardiaceae but can be distinguished from representatives of all genera classified in the family. The novel genus and species Actinomycetospora chiangmaiensis gen. nov., sp. nov. are proposed, with strain YIM 0006(T) (=CCTCC AA 205017(T) =DSM 45062(T)) as the type strain of Actinomycetospora chiangmaiensis.
    Type: Article , PeerReviewed
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    DOI: 10.1099/ijs.0.64976-0
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  • 7
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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
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    DOI: 10.1099/ijs.0.65211-0
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  • 8
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    Promicromonospora flava sp. nov., isolated from sediment of the Baltic Sea (2009)
    Microbiology Society
    In:  International Journal of Systematic and Evolutionary Microbiology, 59 . pp. 1599-1602.
    Details
    Publication Date: 2019-09-23
    Description: A Gram-positive, non-spore-forming actinomycete, designated strain CC 0387(T), was isolated from a sediment sample from the Baltic Sea, Germany. Classification using a polyphasic approach and comparative 16S rRNA gene sequencing showed that strain CC 0387(T) belonged to the genus Promicromonospora and displayed more than 3% 16S rRNA gene sequence divergence from all Promicromonospora species with validly published names. Strain CC 0387(T) did not produce aerial mycelium. Substrate mycelia were yellowish white to pale orange-yellow and fragmented into bacillary or coccoid elements. The cell wall contained lysine and alanine. Whole-cell hydrolysates contained galactose, glucose, rhamnose and ribose. The polar lipid profile consisted of diphosphatidylglycerol, phosphatidylglycerol, an unknown phospholipid and an unknown glycolipid. The predominant menaquinone was MK-9(H-4) (86%). The G+C content of the DNA was 71.87 mol%. Based on morphological, chemotaxonomic, phenotypic and genetic characteristics, strain CC 0387(T) (=CCTCC AA208024(T)=DSM 21481(T)) represents a novel species, for which the name Promicromonospora flava sp. nov. is proposed.
    Type: Article , PeerReviewed
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    DOI: 10.1099/ijs.0.006197-0
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  • 9
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    Streptomyces hainanensis sp nov., a novel member of the genus Streptomyces (2007)
    Microbiology Society
    In:  International Journal of Systematic and Evolutionary Microbiology, 57 . pp. 2694-2698.
    Details
    Publication Date: 2017-05-29
    Description: A novel isolate belonging to the genus Streptomyces, strain YIM 47672(T), was obtained from soil from Hainan, an island in China. The characterization of this isolate was performed by using a polyphasic approach. The strain formed long spore chains in the aerial mycelia. The cell wall contained L-diaminopimelic acid, traces of meso-diaminopimelic acid and glycine. Whole-cell hydrolysates contained galactose and xylose. The phospholipid was of type II. The 16S rRNA gene sequence similarities for YIM 47672(T) with respect to the most closely related type strains of species of the genus Streptomyces were less than 96.3%. Therefore strain YIM 47672(T) represents a novel member of the genus Streptomyces, for which the name Streptomyces hainanensis sp. nov. is proposed. The type strain is YIM 47672 (T) (=CCTCC AA 205017(T) = DSM 41 900(T)).
    Type: Article , PeerReviewed
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    DOI: 10.1099/ijs.0.64940-0
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  • 10
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    Tenacibaculum adriaticum sp. nov., from bryozoans in the Adriatic Sea (2008)
    Microbiology Society
    In:  International Journal of Systematic and Evolutionary Microbiology, 58 . pp. 542-547.
    Details
    Publication Date: 2017-05-30
    Description: A rod-shaped, translucent yellow-pigmented, Gram-negative bacterium, strain B390(T), was isolated from the bryozoan Schizobrachiella sanguinea collected in the Adriatic Sea, near Rovinj, Croatia. 16S rRNA gene sequence analysis indicated affiliation to the genus Tenacibaculum, with sequence similarity levels of 94.8-97.3 % to type strains of species with validly published names. It grew at 5-34 degrees C, with optimal growth at 18-26 degrees C, and only in the presence of NaCl or sea salts. In contrast to other type strains of the genus, strain B390(T) was able to hydrolyse aesculin. The predominant menaquinone was MK-6 and major fatty acids were iso-C-15:0, iso-C-15:0 3-OH and iSO-C-15:1. The DNA G + C content was 31.6 mol%. DNA-DNA hybridization and comparative physiological tests were performed with type strains Tenacibaculum aestuarii JCM 13491(T) and Tenacibaculum lutimaris DSM 16505 T, since they exhibit 16S rRNA gene sequence similarities above 97%. These data, as well as phylogenetic analyses, suggest that strain B390(T) (=DSM 18961(T) =JCM 14633(T)) should be classified as the type strain of a novel species within the genus Tenacibaculum, for which the name Tenacibaculum adriaticum sp. nov. is proposed.
    Type: Article , PeerReviewed
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    DOI: 10.1099/ijs.0.65383-0
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