Abstract:
:A Gram-staining-negative, non-motile, catalase- and oxidase-positive strain, designated MS7(T), was isolated from freshwater of a river near Trabzon, Turkey. Its taxonomy was investigated using a polyphasic approach. The strain grew optimally at 28 °C and pH 7.5 and in the presence of 2.0% NaCl. 16S rRNA gene sequence analysis revealed that the strain belonged to the genus Algoriphagus; strain MS7(T) showed highest sequence similarity to the type strains of Algoriphagus alkaliphilus (97.3%), Algoriphagus terrigena (96.8%), Algoriphagus jejuensis (96.2%), Algoriphagus boritolerans (96.1%) and Algoriphagus aquatilis (95.8%). The major fatty acids of strain MS7(T) were iso-C15 : 0 (30.14%) and summed future 9 (10-methyl C16 : 0 and/or iso-C17 : 1ω9c 18.75%). Polar lipid analysis revealed phosphatidylethanolamine, a variety of unidentified lipids, an unidentified aminophospholipid, an unidentified phospholipid and an unidentified aminolipid. The major isoprenoid quinone was MK-7.The DNA G+C content of MS7(T) was 41.6 mol%, a value consistent with that of members of the genus Algoriphagus. The level of DNA-DNA relatedness between strain MS7(T) and A. alkaliphilus LMG 22694(T) was 41%, which is clearly below the 70% threshold accepted for species delineation. Thus, our results support the placement of strain MS7(T) within a separate and previously unrecognized species. On the basis of these data, the strain is considered to represent a novel species of the genus Algoriphagus, for which the name Algoriphagus trabzonensis sp. nov. is proposed. The type strain is MS7(T) ( = NCCB 100372(T) = LMG 26290(T)). An emended description of A. alkaliphilus is also provided.
journal_name
Int J Syst Evol Microbiolauthors
Inan K,Kacagan M,Ozer A,Osman Belduz A,Canakci Sdoi
10.1099/ijs.0.000246subject
Has Abstractpub_date
2015-07-01 00:00:00pages
2234-2240issue
7eissn
1466-5026issn
1466-5034journal_volume
65pub_type
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