title: Flavobacterium squillarum sp. nov., isolated from a freshwater shrimp culture pond, and emended descriptions of Flavobacterium haoranii, Flavobacterium cauense, Flavobacterium terrae and Flavobacterium aquatile.
abstract: A bacterial strain, designated CMJ-5(T), was isolated from a freshwater shrimp culture pond in Taiwan and characterized using a polyphasic taxonomic approach. Cells of strain CMJ-5(T) were Gram-stain-negative, strictly aerobic, non-motile, yellow-pigmented rods surrounded by a thick capsule. Growth occurred at 20-35 °C (optimum, 30 °C), at pH 6.5-8.0 (optimum, pH 7.0) and with 0-0.5% NaCl (optimum, 0%). Phylogenetic analyses based on 16S rRNA gene sequences showed that strain CMJ-5(T) belonged to the genus Flavobacterium and was related most closely to Flavobacterium haoranii LQY-7(T) with sequence similarity of 94.4%. Strain CMJ-5(T) contained iso-C15:0 (37.5%), iso-C17:0 3-OH (13.4%), iso-C15:0 3-OH (13.1%) and iso-C15:1 G (11.2%) as the predominant fatty acids. The major isoprenoid quinone was MK-6. The polar lipid profile consisted of phosphatidylethanolamine and several uncharacterized aminophospholipids and phospholipids. The major polyamine was homospermidine. The G+C content of the genomic DNA was 42.4 mol%. On the basis of phylogenetic inference and phenotypic data, strain CMJ-5(T) should be classified as a representative of a novel species, for which the name Flavobacterium squillarum sp. nov. is proposed. The type strain is CMJ-5(T) (=BCRC 80405(T)=LMG 26890(T)=KCTC 23915(T)). Emended descriptions of Flavobacterium haoranii, Flavobacterium cauense, Flavobacterium terrae and Flavobacterium aquatile are also proposed.
authors.affiliation: Department of Marine Biotechnology, National Kaohsiung Marine University, No. 142, Hai-Chuan Rd Nan-Tzu, Kaohsiung City 811, Taiwan, ROC.
authors.forename: Shih-Yi
authors.initials: SY
authors.lastname: Sheu
authors.affiliation: Laboratory of Microbiology, Department of Seafood Science, National Kaohsiung Marine University, No. 142, Hai-Chuan Rd Nan-Tzu, Kaohsiung City 811, Taiwan, ROC.
authors.forename: Yang-Shun
authors.initials: YS
authors.lastname: Lin
authors.affiliation: Laboratory of Microbiology, Department of Seafood Science, National Kaohsiung Marine University, No. 142, Hai-Chuan Rd Nan-Tzu, Kaohsiung City 811, Taiwan, ROC.
authors.forename: Wen-Ming
authors.initials: WM
authors.lastname: Chen
mesh_terms: D000818:Animals; D015373:Bacterial Typing Techniques; D001482:Base Composition; D004269:DNA, Bacterial / Q000235:genetics; D033364:Decapoda; D005227:Fatty Acids / Q000032:analysis; D005417:Flavobacterium / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D008969:Molecular Sequence Data; D010743:Phospholipids / Q000032:analysis; D010802:Phylogeny; D011073:Polyamines / Q000032:analysis; D061005:Ponds / Q000382:microbiology*; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D013624:Taiwan; D024482:Vitamin K 2 / Q000031:analogs & derivatives / Q000032:analysis; D014871:Water Microbiology
chemical_list: D004269:DNA, Bacterial; D005227:Fatty Acids; D010743:Phospholipids; D011073:Polyamines; D012336:RNA, Ribosomal, 16S; D024482:Vitamin K 2; C042455:menaquinone 6