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Glycomyces amatae sp. nov., isolated from a yellow-ringed grass moth (Amata sperbius)

Chanwit Suriyachadkun1, Wipaporn Ngaemthao1, Tawanmol Pujchakarn1

  • 1National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Phaholyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani, 12120, Thailand.

International Journal of Systematic and Evolutionary Microbiology
|November 10, 2022
PubMed

Insights

A novel actinomycete strain, Glycomyces amatae sp. nov., was isolated from a moth in Thailand. This discovery expands the known diversity within the Glycomyces genus.

Area of Science:

  • Microbiology
  • Taxonomy
  • Actinobacteria

Background:

  • Actinomycetes are a diverse group of bacteria known for producing bioactive compounds.
  • The genus Glycomyces comprises actinomycetes with unique morphological and chemotaxonomic features.
  • Insect-associated microorganisms represent an underexplored source of novel bacterial species.

Purpose of the Study:

  • To isolate and characterize a novel actinomycete strain from an insect host.
  • To determine the taxonomic placement of the novel strain using polyphasic characterization.
  • To propose a new species within the genus Glycomyces.

Main Methods:

  • Isolation and cultivation of actinomycete strain A-F 0318T from Amata sperbius.
  • Morphological and physiological characterization of the isolate.
  • 16S rRNA gene sequencing and phylogenetic analysis.
  • Genomic analysis including average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH).
  • Chemotaxonomic analyses (cell-wall composition, whole-cell sugars, menaquinone, fatty acids, polar lipids).

Main Results:

  • Strain A-F 0318T formed long chains of smooth, cylindrical spores on aerial mycelia.
  • Phylogenetic analysis placed strain A-F 0318T within the genus Glycomyces, closely related to Glycomyces harbinensis (97.94% 16S rRNA gene similarity).
  • Genomic data (ANI 86.9-89.1%, dDDH 33.8%) supported the differentiation of strain A-F 0318T from G. harbinensis.
  • Chemotaxonomic data (meso-diaminopimelic acid, specific whole-cell sugars, MK-10(H4), characteristic fatty acids) were consistent with the genus Glycomyces.

Conclusions:

  • Strain A-F 0318T represents a distinct species within the genus Glycomyces.
  • The proposed name for this novel species is Glycomyces amatae sp. nov.
  • This finding highlights the potential of insect-associated environments for discovering novel microbial diversity.
Keywords:
Glycomyces amataeThailandgrass moth

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