Current Microbiology

, Volume 75, Issue 10, pp 1401–1407 | Cite as

Actinomadura hankyongense sp. nov. Isolated From Soil of Ginseng Cultivating Field

  • Muhammad Zubair Siddiqi
  • Qingmei Liu
  • Kang Duk Choi
  • Soon Youl Lee
  • Jae Hag Lee
  • Wan Taek ImEmail author


A Gram-positive, rod-shaped, non-spore-forming, and aerobic bacterium (Gsoil 556T) was isolated from soil of a ginseng field and subjected to its taxonomic position. Based on 16S rRNA gene sequence similarity, strain Gsoil 556T was shown to belong to the genus Actinomadura of the family Thermomonosporaceae and was closely related to A. montaniterrae CYP1-1BT (99.3%), A. nitritigenes DSM 44137T (98.7%), and A. rudentiformis HMC1T (98.5%), while it showed less than 98.4% sequence similarity to the other species of this genus. Phylogenetic analysis based on the 16S rRNA gene sequence indicated that it is most closely related to A. rudentiformis HMC1T and A. nitritigenes DSM 44137T. The DNA G+C content was 73.1 mol%. The peptidoglycan was meso-diaminopimelic acid and the whole-cell sugar contained fucose, galactose, glucose, mannose, and ribose. The predominant menaquinone (KK) was MK-9(H8) [55%] and MK-9(H6) [45%]. The major cellular fatty acids were C14:0, C16:0, C18:1 ω9c and summed feature 3 (C16:1 ω6c/C16:1 ω7c). All these data supported the affiliation of strain Gsoil 556T to the genus Actinomadura. The DNA–DNA hybridization between strain Gsoil 556T and its phylogenetically closest relatives were less than 40%. Furthermore, the results of physiological and biochemical tests enabled strain Gsoil 556T to be differentiated genotypically and phenotypically from currently known Actinomadura species. Therefore, strain Gsoil 556T represents a novel species of the genus Actinomadura, for which the name Actinomadura hankyongense sp. nov. is proposed. The type strain Gsoil 556T (=KACC 19438T=LMG 30327T).



This research was supported by the project on survey and excavation of Korean indigenous species of the National Institute of Biological Resources (NIBR) under the Ministry of Environment and by the Intelligent Synthetic Biology Center of Global Frontier Project funded by the Ministry of Education, Science and Technology (2014M3A6A8066437) and this work was supported by the Intelligent Synthetic Biology Center of Global Frontier Project funded by the Ministry of Science and ICT (2011-0031955).

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Muhammad Zubair Siddiqi
    • 1
  • Qingmei Liu
    • 2
    • 3
  • Kang Duk Choi
    • 3
  • Soon Youl Lee
    • 1
  • Jae Hag Lee
    • 4
  • Wan Taek Im
    • 1
    • 3
    Email author
  1. 1.Department of BiotechnologyHankyong National UniversityAnseong-siRepublic of Korea
  2. 2.AceEMzyme Co., Ltd., Academic Industry CooperationAnseong-siRepublic of Korea
  3. 3.Sellusone Co., Ltd.Anseong-siRepublic of Korea
  4. 4.Department of Food & NutrtionSeoil UniversitySeoulRepublic of Korea

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