Lysobacter segetis sp. nov., Isolated from Soil
2020
Ten, Leonid N. | Jeon, Jongguen | Elderiny, Nabil Salah | Kim, Myung Kyum | Lee, Seung-Yeol | Jung, Hee-Young
A Gram-negative, aerobic, motile by gliding, rod-shaped bacterium, strain 17J68-2ᵀ, was isolated from a soil sample taken from Jeju Island, Republic of Korea. The isolate displayed high 16S rRNA gene sequence similarity to the members of the genus Lysobacter in the family Lysobacteraceae, with Lysobacter humi FJY8ᵀ (98.4% similarity), Lysobacter xinjiangensis RCML-52ᵀ (98.3%), and Lysobacter mobilis 9NM-14ᵀ (98.1%) as closest phylogenetic neighbors. Growth of strain 17J68-2ᵀ occurred at 15–42 °C, pH 7–8, and in the presence of 0–1.0% NaCl. Draft genome was 2.94 Mb in size with G+C content of 70.5 mol%. The major polar lipids were phosphatidylglycerol, diphosphatidylglycerol, and phosphatidylethanolamine. Ubiquinone Q-8 was the predominant respiratory quinone and the major fatty acids were C₁₆:₀ iso (39.4%), summed feature 3 (C₁₆:₁ω7c/C₁₆:₁ω6c) (6.6%), C₁₁:₀ iso 3–OH (6.4%), C₁₅:₀ iso (6.4%), and C₁₆:₁ iso H (6.2%). The DNA–DNA relatedness between strain 17J68-2ᵀ and L. humi, L. xinjiangensis, and L. mobilis were 39.9, 39.4, and 25.3%, respectively. From these results, it is concluded that the novel isolate possesses sufficient characteristics to differentiate it from the most closely affiliated Lysobacter species, and strain 17J68-2ᵀ represents a novel species of the genus Lysobacter, for which the name Lysobacter segetis sp. nov. (=KCTC 62237ᵀ = JCM 33058ᵀ) is proposed.
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