Abstract
A Gram-negative, short rod-shaped, and pink-pigmented bacterial strain, designated MA1T, was isolated from a soil sample from Gijang-gun, Busan in Republic of Korea. The 16S rRNA gene sequence analysis showed that strain MA1T belonged to the genus Larkinella and was closely related to “Larkinella punicea” (97.5% similarity), Larkinella rosea 15J16-1T3AT (96.5%), and Larkinella knui 15J6-3T6T (96.2%). Polar lipid profile of strain MA1T contained phosphatidylethanolamine, two unidentified aminolipids, and three unidentified lipids. Menaquinone-7 was the only quinone and the main fatty acids were C16:1 ω5c (36.7%), iso-C15:0 (30.0%), iso-C17:0 3-OH (7.7%), and summed feature 3 (C16:1 ω6c and/or C16:1 ω7c and/or iso-C15:0 2-OH) (7.3%). The genomic DNA G + C content was 52.3 mol% based on the whole-genome analysis. Strain MA1T exhibited a relatively low level of ANI and in silico DDH values with “Larkinella punicea” (91.9 and 47.1%, respectively), Larkinella rosea (79.7 and 23.3%), and Larkinella knui (81.9 and 25.7%). Based on its phenotypic properties and phylogenetic distinctiveness, strain MA1T should be classified in the genus Larkinella as a representative of a novel species, for which the name Larkinella humicola sp. nov. is proposed. The type strain is MA1T (= KCTC 72629T = NBRC 114191T).
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Funding
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIT) (No. 2021R1F1A1061389) and by a grant from the National Institute of Biological Resources (NIBR), funded by the Ministry of Environment of the Republic of Korea (NIBR202102205).
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Park, Y., Ten, L.N., Lee, Y.K. et al. Larkinella humicola sp. nov., a gamma radiation-resistant bacterium isolated from soil. Arch Microbiol 204, 182 (2022). https://doi.org/10.1007/s00203-022-02790-4
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DOI: https://doi.org/10.1007/s00203-022-02790-4