Abstract
A novel halophilic bacterium, strain K7T, was isolated from kimchi, a traditional Korean fermented food. The strain is Gram-positive, motile, and produces terminal endospores. The isolate is facultative aerobic and grows at salinities of 0.0–25.0% (w/v) NaCl (optimum 10–15% NaCl), pH 5.5–8.5 (optimum pH 7.0–7.5), and 15–42°C (optimum 37°C). The predominant isoprenoid quinone in the strain is menaquinone-7 and the peptidoglycan of the strain is meso-diaminopimelic acid. The major fatty acids of the strain are anteisio-C15:0, iso-C15:0, and, C16:0 (other components were < 10.0%), while the major polar lipids are diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, and three unidentified lipids. A phylogenetic analysis of 16S rRNA gene sequence similarity showed that the isolated strain was a cluster of the genus Gracilibacillus. High levels of gene sequence similarity were observed between strain K7T and Gracilibacillus orientalis XH-63T (96.5%), and between the present strain and Gracilibacillus xinjiangensis (96.5%). The DNA G+C content of this strain is 37.7 mol%. Based on these findings, strain K7T is proposed as a novel species: Gracilibacillus kimchii sp. nov. The type strain is K7T (KACC 18669T; JCM 31344T).
Similar content being viewed by others
References
Ahmed, I., Yokota, A., and Fujiwara, T. 2007. Gracilibacillus boraciitolerans sp. nov., a highly boron-tolerant and moderately halotolerant bacterium isolated from soil. Int. J. Syst. Evol. Microbiol. 57, 796–802.
Bousfield, G.R., Sugino, H., and Ward, D.N. 1985. Demonstration of a COOH-terminal extension on equine lutropin by means of a common acid-labile bond in equine lutropin and equine chorionic gonadotropin. J. Biol. Chem. 260, 9531–9533.
Carrasco, I.J., Marquez, M.C., Yanfen, X., Ma, Y., Cowan, D.A., Jones, B.E., Grant, W.D., and Ventosa, A. 2006. Gracilibacillus orientalis sp. nov., a novel moderately halophilic bacterium isolated from a salt lake in inner Mongolia, China. Int. J. Syst. Evol. Microbiol. 56, 599–604.
Chamroensaksri, N., Tanasupawat, S., Akaracharanya, A., Visessanguan, W., Kudo, T., and Itoh, T. 2010. Gracilibacillus thailandensis sp. nov., from fermented fish (pla-ra). Int. J. Syst. Evol. Microbiol. 60, 944–948.
Chen, Y.G., Cui, X.L., Zhang, Y.Q., Li, W.J., Wang, Y.X., Xu, L.H., Peng, Q., Wen, M.L., and Jiang, C.L. 2008a. Gracilibacillus halophilus sp. nov., a moderately halophilic bacterium isolated from saline soil. Int. J. Syst. Evol. Microbiol. 58, 2403–2408.
Chen, Y.G., Cui, X.L., Zhang, Y.Q., Li, W.J., Wang, Y.X., Xu, L.H., Peng, Q., Wen, M.L., and Jiang, C.L. 2008b. Gracilibacillus quinghaiensis sp. nov., isolated from salt-lake sediment in the Qaidam Basin, north-west China. Syst. Appl. Microbiol. 31, 183–189.
Collins, M.D. and Jones, D. 1981. A note on the separation of natural mixtures of bacterial ubiquinones using reverse-phase partition thin-layer chromatography and high performance liquid chromatography. J. Appl. Bacteriol. 51, 129–134.
Felsenstein, J. 1981. Evolutionary trees from DNA sequences: a maximum likelihood approach. J. Mol. Evol. 17, 368–376.
Gao, M., Liu, Z.Z., Zhou, Y.G., Liu, H.C., Ma, Y.C., Wang, L., Chen, S.F., and Ji, X.C. 2012. Gracilibacillus kekensis sp. nov., a moderate halophile isolated from Keke Salt Lake. Int. J. Syst. Evol. Microbiol. 62, 1032–1036.
Guan, L., Cho, K.H., and Lee, J.H. 2011. Analysis of the cultivable bacterial community in jeotgal, a Korean salted and fermented seafood, and identification of its dominant bacteria. Food Microbiol. 28, 101–113.
Hirota, K., Hanaoka, Y., Nodasaka, Y., and Yumoto, I. 2014. Gracilibacillus alcaliphilus sp. nov., a facultative alkaliphile isolated from indigo fermentation liquor for dyeing. Int. J. Syst. Evol. Microbiol. 64, 3174–3180.
Huang, H.Q., Wang, Y., Yuan, W.D., Xiao, C., Ye, J.J., Liu, M., Zhu, J., Sun, Q.G., and Bao, S.X. 2013. Gracilibacillus marinus sp. nov., isolated from the northern South China Sea. Antonie van Leeuwenhoek 104, 695–701.
Huo, Y.Y., Xu, X.W., Cui, H.L., and Wu, M. 2010. Gracilibacillus ureilyticus sp. nov., a halotolerant bacterium from a saline-alkaline soil. Int. J. Syst. Evol. Microbiol. 60, 1383–1386.
Jeon, C.O., Lim, J.M., Jang, H.H., Park, D.J., Xu, L.H., Jiang, C.L., and Kim, C.J. 2008. Gracilibacillus lacisalsi sp. nov., a halophilic Gram-positive bacterium from a salt lake in China. Int. J. Syst. Evol. Microbiol. 58, 2282–2286.
Kim, E.Y. 2013. World Institute of Kimchi as a leading global institute of fermented foods. Biotechnol. J. 8, 759–760.
Kim, O.S., Cho, Y.J., Lee, K., Yoon, S.H., Kim, M., Na, H., Park, S.C., Jeon, Y.S., Lee, J.H., Yi, H., et al. 2012a. Introducing EzTaxon-e: a prokaryotic 16S rRNA gene sequence database with phylotypes that represent uncultured species. Int. J. Syst. Evol. Microbiol. 62, 716–721.
Kim, P., Lee, J.C., Park, D.J., Shin, K.S., Kim, J.Y., and Kim, C.J. 2012b. Gracilibacillus bigeumensis sp. nov., a moderately halophilic bacterium from solar saltern soil. Int. J. Syst. Evol. Microbiol. 62, 1857–1863.
Kimura, M. 1983. The neutral theroy of molecular evolution. Cambride University Press, Cambridge, UK.
Lane, D.J. 1991. 16S/23S rRNA sequencing. In Goodfellow, M. (ed.), Nucleic acid techniques in bacterial systematics, pp. 115–175. John Wiley & Sons. Wiley, Chichester, UK.
Lee, J.J., Kang, M.S., Joo, E.S., Kim, M.K., Im, W.T., Jung, H.Y., and Srinivasan, S. 2015. Spirosoma montaniterrae sp. nov., an ultraviolet and gamma radiation-resistant bacterium isolated from mountain soil. J. Microbiol. 53, 429–434.
Mesbah, M. and Whitman, W.B. 1989. Measurement of deoxyguanosine/thymidine ratios in complex mixtures by high-performance liquid chromatography for determination of the mole percentage guanine + cytosine of DNA. J. Chromatogr. 479, 297–306.
MIDI. 1999. Sherlock microbial identification system operating manual, version 3.0. MIDI, Newark, USA.
Namwong, S., Tanasupawat, S., Smitinont, T., Visessanguan, W., Kudo, T., and Itoh, T. 2005. Isolation of Lentibacillus salicampi strains and Lentibacillus juripiscarius sp. nov. from fish sauce in Thailand. Int. J. Syst. Evol. Microbiol. 55, 315–320.
Nei, M., Kumar, S., and Takahashi, K. 1998. The optimization principle in phylogenetic analysis tends to give incorrect topologies when the number of nucleotides or amino acids used is small. Proc. Natl. Acad. Sci. USA 95, 12390–12397.
Oh, Y.J., Lee, H.W., Lim, S.K., Kwon, M.S., Lee, J., Lee, J.H., Park, H.W., Nam, Y.D., Seo, M.J., Roh, S.W., et al. 2016. Lentibacillus kimchii sp. nov., an extremely halophilic bacterium isolated from kimchi, a Korean fermented vegetable. Antonie van Leeuwenhoek 109, 869–876.
Pakdeeto, A., Tanasupawat, S., Thawai, C., Moonmangmee, S., Kudo, T., and Itoh, T. 2007. Lentibacillus kapialis sp. nov., from fermented shrimp paste in Thailand. Int. J. Syst. Evol. Microbiol. 57, 364–369.
Park, E.J., Chun, J., Cha, C.J., Park, W.S., Jeon, C.O., and Bae, J.W. 2012. Bacterial community analysis during fermentation of ten representative kinds of kimchi with barcoded pyrosequencing. Food Microbiol. 30, 197–204.
Saitou, N. and Nei, M. 1987. The neighbor-joining method: a new method for reconstructing phylogenetic trees. Mol. Biol. Evol. 4, 406–425.
Sasser, M. 1990. Identification of bacteria by gas chromatography of cellular fatty acids. MIDI Technical Note 101. MIDI, Newark, USA.
Schaeffer, A.B. and Fulton, M.D. 1933. A simplified method of staining endospores. Science 77, 194.
Tamura, K., Peterson, D., Peterson, N., Stecher, G., Nei, M., and Kumar, S. 2011. MEGA5: molecular evolutionary genetics analysis using maximum likelihood, evolutionary distance, and maximum parsimony methods. Mol. Biol. Evol. 28, 2731–2739.
Tanasupawat, S., Namwong, S., Kudo, T., and Itoh, T. 2007. Piscibacillus salipiscarius gen. nov., sp. nov., a moderately halophilic bacterium from fermented fish (pla-ra) in Thailand. Int. J. Syst. Evol. Microbiol. 57, 1413–1417.
Tanasupawat, S., Pakdeeto, A., Namwong, S., Thawai, C., Kudo, T., and Itoh, T. 2006. Lentibacillus halophilus sp. nov., from fish sauce in Thailand. Int. J. Syst. Evol. Microbiol. 56, 1859–1863.
Tang, S.K., Wang, Y., Lou, K., Mao, P.H., Jin, X., Jiang, C.L., Xu, L.H., and Li, W.J. 2009. Gracilibacillus saliphilus sp. nov., a moderately halophilic bacterium isolated from a salt lake. Int. J. Syst. Evol. Microbiol. 59, 1620–1624.
Tindall, B.J., Tomlinson, G.A., and Hochstein, L.I. 1987. Polar lipid composition of a new halobacterium. Syst. Appl. Microbiol. 9, 6–8.
Tittsler, R.P. and Sandholzer, L.A. 1936. The use of semi-solid agar for the detection of bacterial motility. J. Bacteriol. 31, 575–580.
Wainø, M., Tindall, B.J., Schumann, P., and Ingvorsen, K. 1999. Gracilibacillus gen. nov., with description of Gracilibacillus halotolerans gen. nov., sp. nov.; transfer of Bacillus dipsosauri to Gracilibacillus dipsosauri comb. nov., and Bacillus salexigens to the genus Salibacillus gen. nov., as Salibacillus salexigens comb. nov. Int. J. Syst. Bacteriol. 49, 821–831.
Yang, N., Ren, B., Dai, H., Liu, Z., Zhou, Y., Song, F., and Zhang, L. 2013. Gracilibacillus xinjiangensis sp. nov., a new member of the genus Gracilibacillus isolated from Xinjiang region, China. Antonie van Leeuwenhoek 104, 809–816.
Yoon, J.H., Weiss, N., Lee, K.C., Lee, I.S., Kang, K.H., and Park, Y.H. 2001. Jeotgalibacillus alimentarius gen. nov., sp. nov., a novel bacterium isolated from jeotgal with L-lysine in the cell wall, and reclassification of Bacillus marinus Ruger 1983 as Marinibacillus marinus gen nov., comb. nov. Int. J. Syst. Evol. Microbiol. 51, 2087–2093.
Author information
Authors and Affiliations
Corresponding author
Additional information
Supplemental material for this article may be found at http://www.springerlink.com/content/120956
Electronic supplementary material
Rights and permissions
About this article
Cite this article
Oh, Y.J., Lee, HW., Lim, S.K. et al. Gracilibacillus kimchii sp. nov., a halophilic bacterium isolated from kimchi. J Microbiol. 54, 588–593 (2016). https://doi.org/10.1007/s12275-016-6349-4
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12275-016-6349-4