Hwanghaeella grinnelliae gen. nov., sp. nov., isolated from a marine red alga

Kim, Jung-Eun; Jeong, Sang Eun; Khan, Shehzad Abid; Jeon, Che Ok

doi:10.1099/ijsem.0.003656

Cited by 14 publications

(12 citation statements)

References 30 publications

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“…blast analysis of the 16S rRNA gene sequence revealed that RKSG073 T shared the highest similarity to several uncharacterized members of the class Alphaproteobacteria , followed by type strains of the order Rhodospirillales including Aestuariispira insulae AH-MY2 T (92.1 %; family Kiloniellaceae ), Hwanghaeella grinnelliae Gri0909 T (90.0 %; family Rhodospirillaceae ) and Marivibrio halodurans ZC80 T (88.5 %; family Kiloniellaceae ), as well as of the genera Kiloniella (≤89.6 %; family Kiloniellaceae ), Thalassospira (≤89.2 %; family Thalassospiraceae ) and Terasakiella (≤88.7 %; family Terasakiellaceae ) [14, 40]. The results of phylogenetic analysis based on nearly full-length 16S rRNA gene sequences placed RKSG073 T in a monophyletic clade with mainly uncultured strains of the class Alphaproteobacteria , interestingly all identified from marine-sources, which nested in a larger clade with A.…”

Section: S Rrna Phylogenymentioning

confidence: 99%

“…For example, RKSG073 T differed from its closest relative A. insulae AH-MY2 T in that it possesses flagella and does not ferment glucose or hydrolyze gelatin, but does hydrolyze starch [21, 40]. In addition, RKSG073 T does not reduce nitrate, unlike most of its closest relatives except H.…”

Section: Distinguishing Characteristicsmentioning

confidence: 99%

“…In addition, RKSG073 T does not reduce nitrate, unlike most of its closest relatives except H. grinnelliae Gri0909 T [40], a distinguishing feature supported by genome annotation. Strains RKSG073 T and A.…”

Section: Distinguishing Characteristicsmentioning

confidence: 99%

“…RKSG073 T shared several features with its closest relatives of the order Rhodospirillales, mainly of the family Kiloniellaceae, including cells being curved-to-spiral rods with monopolar or bipolar flagella (Fig. 4), oxidase-and catalase-positive, and containing the predominant fatty acids summed feature 8 (C 18 : 1 ω6c and/or C 18 : 1 ω7c) and C 16 : 0 (Tables 1 and 2), as well as containing the main respiratory ubiquinone Q-10 [19,21,40,67,68]. Yet, distinguishing phenotypic, biochemical and genetic characteristics served to differentiate RKSG073 T from its nearest neighbours.…”

Section: Distinguishing Characteristicsmentioning

confidence: 99%

“…+, Positive; −, negative; B, bipolar; M, monopolar; A, aerobic; FAN, facultatively anaerobic; nd, no data available. *Data from [40].…”

Section: Distinguishing Characteristicsmentioning

confidence: 99%

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Curvivirga aplysinae gen. nov., sp. nov., a marine bacterium isolated from the sea sponge Aplysina fistularis

Goldberg

Haltli

Correa

et al. 2021

International Journal of Systematic and Evolutionary Microbiology

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A Gram-stain-negative, strictly aerobic, motile bacterium, designated strain RKSG073T, was isolated from the sea sponge Aplysina fistularis, collected off the west coast of San Salvador, The Bahamas. Cells were curved-to-spiral rods with single, bipolar (amphitrichous) flagella, oxidase- and catalase-positive, non-nitrate-reducing and required salt for growth. RKSG073T grew optimally at 30–37 °C, pH 6–7, and with 2–3 % (w/v) NaCl. The predominant fatty acids of RKSG073T were summed feature 8 (C18 : 1ω6c and/or C18 : 1ω7c) and C16 : 0. Major isoprenoid quinones were identified as Q-10 and Q-9. Phylogenetic analyses of nearly complete 16S rRNA genes and genome sequences positioned strain RKSG073T in a clade with its closest relative Aestuariispira insulae AH-MY2T (92.1 % 16S rRNA gene sequence similarity), which subsequently clustered with Hwanghaeella grinnelliae Gri0909T, Marivibrio halodurans ZC80T and type species of the genera Kiloniella , Thalassospira and Terasakiella . The DNA G+C content calculated from the genome of RKSG073T was 42.2 mol%. On the basis of phylogenetic distinctiveness and polyphasic analysis, here we propose that RKSG073T (culture deposit numbers: ATCC collection = TSD-74T, BCCM collection = LMG 29869T) represents the type strain of a novel genus and species within the family Kiloniellaceae , order Rhodospirillales and class Alphaproteobacteria , for which the name Curvivirga aplysinae gen. nov., sp. nov. is proposed.

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