1887

Abstract

Two actinobacteria, designated as strain LDG1-01 and LDG1-06, were isolated from lichen samples collected in Thailand. Results of morphological characterization, chemotaxonomic studies and 16S rRNA gene analysis indicated that both strains were members of the genus . MK-9(H) was found as the major menaquinone. The major fatty acids were anteiso-C, iso-C, iso-C and anteiso-C. Phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine and phosphatidylinositol were observed as the polar lipids, but differences in minor unidentified polar lipids were found between the strains. Results of comparative genome analysis based on average nucleotide identity and digital DNA–DNA hybridization calculations revealed that both strains showed values below 95 and 70 %, respectively, from each other and closely related type strains. Based on data from this polyphasic study, strains LDG1-01 and LDG1-06 represent novel species of the genus . The names proposed are sp. nov. (type strain, LDG1-01 (=JCM 33066=TISTR 2982) and sp. nov. (type strain, LDG1-06=JCM 33067=TISTR 2983).

Funding
This study was supported by the:
  • International Research Integration: Research Pyramid, Ratchadaphiseksomphot Endowment Fund (GCURP_58_01_33_01), Chulalongkorn University.
    • Principle Award Recipient: SomboonTanasupawat
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2021-07-28
2022-01-29
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