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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 74, Issue 5

sp. nov. a zeaxanthin-producing marine bacterium isolated from coastal sediment No Access

Abstract

A Gram-stain-negative, yellow-pigmented, strictly aerobic, non-flagellated, motile by gliding, rod-shaped bacterium, designated strain YSD2104, was isolated from a coastal sediment sample collected from the southeastern part of the Yellow Sea. Phylogenetic analysis based on the 16S rRNA gene sequences revealed that strain YSD2104 was closely related to three type strains, IMCC1616 (97.4 %), SMK-142 (96.9 %), and RSS3-C1 (96.8 %). Strain YSD2104 has a single circular chromosome of 3.54 Mbp with a DNA G+C content of 38.3 mol%. The average nucleotide identity and digital DNA–DNA hybridization values between strain YSD2104 and the three type strains ( IMCC1616 , SMK-142, and RSS3-C1) were 74.0, 86.2 and 73.6 %, and 17.9, 30.3 and 17.8 %, respectively. Growth was observed at 20–30 °C (optimum, 30 °C), at pH 6.5–8.5 (optimum, pH 7.0), and with NaCl concentrations of 1.5–3.5 % (optimum, 2.5 %). The major carotenoid was zeaxanthin, and flexirubin-type pigment was not produced. The major respiratory quinone was menaquinone-6. The major fatty acids (>10 %) were iso-C, iso-C G, iso-C 3-OH, summed feature 3 (C 6 and/or C 7), and summed feature 9 (iso-C 9 and/or 10-methyl C). The major polar lipids were phosphatidylethanolamine, one unidentified aminophospholipid, two unidentified aminolipids, and eight unidentified lipids. Conclusively, based on this polyphasic approach, we classified strain YSD2104 (=KCTC 102008=JCM 36287) as representing a novel species of the genus and proposed the name sp. nov.

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Keyword(s): coastal sediment , Flavobacteriaceae , Lutimonas and zeaxanthin-producing
© 2024 The Authors
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2024-05-14
2025-05-23
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Lutimonas zeaxanthinifaciens sp. nov., a zeaxanthin-producing marine bacterium isolated from coastal sediment
Int J Syst Evol Microbiol 74, 006386 (2024); https://doi.org/10.1099/ijsem.0.006386
/content/journal/ijsem/10.1099/ijsem.0.006386
/content/journal/ijsem/10.1099/ijsem.0.006386
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