Paenibacillus panacihumi sp. nov., a potential plant growth-promoting bacterium isolated from ginseng-cultivated soil

Arch Microbiol. 2018 Sep;200(7):1049-1055. doi: 10.1007/s00203-018-1517-z. Epub 2018 Apr 20.


A novel bacterium, designated DCY114T, was isolated from ginseng-cultivated soil in Gochang-gun, Republic of Korea. This isolate was assigned to the genus Paenibacillus and is closely related to Paenibacillus amylolyticus NRRL NRS-290T (98.3%), P. dongdonensis KUDC0114T (98.0%), P. tylopili MK2T (97.9%), P. tundrae A10bT (97.8%), and P. xylanexedens B22aT (97.5%) based on 16S rRNA gene sequence analysis. Strain DCY114T is a Gram-reaction positive, catalase and oxidase positive, facultatively aerobic rod that is motile by peritrichous flagella. Strain DCY114T produces siderophores and indole-3-acetic acid (IAA) and is able to solubilize phosphate as a plant growth-promoting bacterium. MK-7 was the diagnostic menaquinone. The major cellular fatty acids were anteiso-C15:0, C16:0, and C18:0, and the major polar lipids were diphosphatidylglycerol (DPG), phosphatidylethanolamine (PE), and an unknown amino lipid (AL1,2). The genomic DNA G + C content was 46.0 mol%. Phenotypic and chemotaxonomic results also placed strain DCY114T within the genus Paenibacillus. DNA-DNA homology values between strain DCY114T and closely related reference strains were lower than 43%. The low DNA relatedness data in combination with phylogenetic and biochemical tests indicated that strain DCY114T could not be assigned to a recognized species. The results of this study support that the DCY114T strain is a novel species belonging to the genus Paenibacillus, for which the name Paenibacillus panacihumi is proposed. The type strain is DCY114T (= KCTC 33915T = JCM 32073T).

Keywords: Ginseng-cultivated soil; Paenibacillus panacihumi; Plant growth-promoting bacterium.

MeSH terms

  • Bacterial Typing Techniques
  • Base Composition
  • DNA, Bacterial / genetics
  • Fatty Acids / metabolism
  • Paenibacillus / classification
  • Paenibacillus / genetics
  • Paenibacillus / isolation & purification*
  • Paenibacillus / metabolism
  • Panax / growth & development*
  • Panax / microbiology
  • Phylogeny
  • RNA, Ribosomal, 16S / genetics
  • Republic of Korea
  • Sequence Analysis, DNA
  • Soil Microbiology*


  • DNA, Bacterial
  • Fatty Acids
  • RNA, Ribosomal, 16S