Sejongia antarctica gen. nov., sp nov. and Sejongia jeonii sp. nov., isolated from the Antarctic

Hana Yi, Ho Il Yoon, Jongsik Chun

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Two yellow-pigmented, Gram-negative and aerobic bacterial strains, designated AT1013T and AT1047T, were isolated from terrestrial samples of the Antarctic. On the basis of 16S rRNA gene sequence analyses, the two Antarctic strains shared 97.7% sequence similarity and showed moderate relationships to the genera Chryseobacterium (92.5-95.3%), Riemerella (92.3-93.5%), Bergeyella (92.5-92.6%) and Kaistella (92.5-93.3%). In phylogenetic analyses, the two isolates formed a robust monophyletic clade and represented a distinct phyletic line that equated to novel generic status. Cells were non-motile, non-gliding and psychrotolerant with an optimum growth temperature of about 20 °C. Flexirubins were absent. The major isoprenoid quinone was MK-6. The predominant cellular fatty acids were 15:0 iso, 15:0 anteiso and 17:1 iso ω9c. DNA G+C contents were 34-36 mol%. The two isolates shared low genomic relatedness (27%) and were differentiated from each other by several phenotypic characteristics. The polyphasic data presented in this study indicated that these isolates should be recognized as two separate novel species in a novel genus within the family Flavobacteriaceae. The name Sejongia gen. nov. is therefore proposed for the Antarctic isolates, with the type species Sejongia antarctica sp. nov. (type strain AT1013T=IMSNU 14040T=KCTC 12225T=JCM 12381T) and Sejongia jeonii sp. nov. (type strain AT1047T=IMSNU 14049T=KCTC 12226T=JCM 12382T).

Original languageEnglish
Pages (from-to)409-416
Number of pages8
JournalInternational Journal of Systematic and Evolutionary Microbiology
Volume55
Issue number1
DOIs
Publication statusPublished - 2005 Jan 1
Externally publishedYes

Fingerprint

Riemerella
Flavobacteriaceae
Chryseobacterium
Terpenes
Base Composition
rRNA Genes
Antarctica
Names
Sequence Analysis
Fatty Acids
Temperature
isoprenoid
new species
DNA
Growth
relatedness
Bergeyella
genomics
fatty acid
phylogenetics

ASJC Scopus subject areas

  • Microbiology
  • Applied Microbiology and Biotechnology
  • Ecology, Evolution, Behavior and Systematics
  • Immunology

Cite this

Sejongia antarctica gen. nov., sp nov. and Sejongia jeonii sp. nov., isolated from the Antarctic. / Yi, Hana; Yoon, Ho Il; Chun, Jongsik.

In: International Journal of Systematic and Evolutionary Microbiology, Vol. 55, No. 1, 01.01.2005, p. 409-416.

Research output: Contribution to journalArticle

@article{4c3a86c3e2854d5d8af9534e630c6dca,
title = "Sejongia antarctica gen. nov., sp nov. and Sejongia jeonii sp. nov., isolated from the Antarctic",
abstract = "Two yellow-pigmented, Gram-negative and aerobic bacterial strains, designated AT1013T and AT1047T, were isolated from terrestrial samples of the Antarctic. On the basis of 16S rRNA gene sequence analyses, the two Antarctic strains shared 97.7{\%} sequence similarity and showed moderate relationships to the genera Chryseobacterium (92.5-95.3{\%}), Riemerella (92.3-93.5{\%}), Bergeyella (92.5-92.6{\%}) and Kaistella (92.5-93.3{\%}). In phylogenetic analyses, the two isolates formed a robust monophyletic clade and represented a distinct phyletic line that equated to novel generic status. Cells were non-motile, non-gliding and psychrotolerant with an optimum growth temperature of about 20 °C. Flexirubins were absent. The major isoprenoid quinone was MK-6. The predominant cellular fatty acids were 15:0 iso, 15:0 anteiso and 17:1 iso ω9c. DNA G+C contents were 34-36 mol{\%}. The two isolates shared low genomic relatedness (27{\%}) and were differentiated from each other by several phenotypic characteristics. The polyphasic data presented in this study indicated that these isolates should be recognized as two separate novel species in a novel genus within the family Flavobacteriaceae. The name Sejongia gen. nov. is therefore proposed for the Antarctic isolates, with the type species Sejongia antarctica sp. nov. (type strain AT1013T=IMSNU 14040T=KCTC 12225T=JCM 12381T) and Sejongia jeonii sp. nov. (type strain AT1047T=IMSNU 14049T=KCTC 12226T=JCM 12382T).",
author = "Hana Yi and Yoon, {Ho Il} and Jongsik Chun",
year = "2005",
month = "1",
day = "1",
doi = "10.1099/ijs.0.63273-0",
language = "English",
volume = "55",
pages = "409--416",
journal = "The BMJ",
issn = "0730-6512",
publisher = "Kluwer Academic Publishers",
number = "1",

}

TY - JOUR

T1 - Sejongia antarctica gen. nov., sp nov. and Sejongia jeonii sp. nov., isolated from the Antarctic

AU - Yi, Hana

AU - Yoon, Ho Il

AU - Chun, Jongsik

PY - 2005/1/1

Y1 - 2005/1/1

N2 - Two yellow-pigmented, Gram-negative and aerobic bacterial strains, designated AT1013T and AT1047T, were isolated from terrestrial samples of the Antarctic. On the basis of 16S rRNA gene sequence analyses, the two Antarctic strains shared 97.7% sequence similarity and showed moderate relationships to the genera Chryseobacterium (92.5-95.3%), Riemerella (92.3-93.5%), Bergeyella (92.5-92.6%) and Kaistella (92.5-93.3%). In phylogenetic analyses, the two isolates formed a robust monophyletic clade and represented a distinct phyletic line that equated to novel generic status. Cells were non-motile, non-gliding and psychrotolerant with an optimum growth temperature of about 20 °C. Flexirubins were absent. The major isoprenoid quinone was MK-6. The predominant cellular fatty acids were 15:0 iso, 15:0 anteiso and 17:1 iso ω9c. DNA G+C contents were 34-36 mol%. The two isolates shared low genomic relatedness (27%) and were differentiated from each other by several phenotypic characteristics. The polyphasic data presented in this study indicated that these isolates should be recognized as two separate novel species in a novel genus within the family Flavobacteriaceae. The name Sejongia gen. nov. is therefore proposed for the Antarctic isolates, with the type species Sejongia antarctica sp. nov. (type strain AT1013T=IMSNU 14040T=KCTC 12225T=JCM 12381T) and Sejongia jeonii sp. nov. (type strain AT1047T=IMSNU 14049T=KCTC 12226T=JCM 12382T).

AB - Two yellow-pigmented, Gram-negative and aerobic bacterial strains, designated AT1013T and AT1047T, were isolated from terrestrial samples of the Antarctic. On the basis of 16S rRNA gene sequence analyses, the two Antarctic strains shared 97.7% sequence similarity and showed moderate relationships to the genera Chryseobacterium (92.5-95.3%), Riemerella (92.3-93.5%), Bergeyella (92.5-92.6%) and Kaistella (92.5-93.3%). In phylogenetic analyses, the two isolates formed a robust monophyletic clade and represented a distinct phyletic line that equated to novel generic status. Cells were non-motile, non-gliding and psychrotolerant with an optimum growth temperature of about 20 °C. Flexirubins were absent. The major isoprenoid quinone was MK-6. The predominant cellular fatty acids were 15:0 iso, 15:0 anteiso and 17:1 iso ω9c. DNA G+C contents were 34-36 mol%. The two isolates shared low genomic relatedness (27%) and were differentiated from each other by several phenotypic characteristics. The polyphasic data presented in this study indicated that these isolates should be recognized as two separate novel species in a novel genus within the family Flavobacteriaceae. The name Sejongia gen. nov. is therefore proposed for the Antarctic isolates, with the type species Sejongia antarctica sp. nov. (type strain AT1013T=IMSNU 14040T=KCTC 12225T=JCM 12381T) and Sejongia jeonii sp. nov. (type strain AT1047T=IMSNU 14049T=KCTC 12226T=JCM 12382T).

UR - http://www.scopus.com/inward/record.url?scp=13244252519&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=13244252519&partnerID=8YFLogxK

U2 - 10.1099/ijs.0.63273-0

DO - 10.1099/ijs.0.63273-0

M3 - Article

C2 - 15653910

AN - SCOPUS:13244252519

VL - 55

SP - 409

EP - 416

JO - The BMJ

JF - The BMJ

SN - 0730-6512

IS - 1

ER -