Myroides indicus sp. nov., isolated from garden soil.

Area of Science:

• Microbiology
• Bacterial Taxonomy
• Genomics

Background:

• The genus Myroides comprises aerobic, Gram-negative bacteria known for their distinctive pigmentation and odor.
• Accurate classification of bacterial species is crucial for understanding microbial ecology and potential applications.

Purpose of the Study:

• To characterize a novel bacterial isolate from garden soil using polyphasic taxonomic methods.
• To determine the phylogenetic and chemotaxonomic properties of the isolate.
• To formally propose a new species within the Myroides genus.

Main Methods:

• Isolation and cultivation of bacterial strain UKS3T from garden soil.
• Phenotypic characterization including Gram staining, motility, and colony morphology.
• Phylogenetic analysis based on 16S rRNA gene sequencing.
• Chemotaxonomic analysis of major respiratory quinones and fatty acids.
• Determination of polar lipid profiles and DNA G+C content.

Main Results:

• Strain UKS3T is an aerobic, non-motile, rod-shaped, catalase- and oxidase-positive bacterium.
• Phylogenetic analysis revealed highest sequence similarity to Myroides marinus JS-08T (92.7%).
• Chemotaxonomic data showed MK-6 as the major respiratory quinone and specific fatty acid profiles.
• DNA G+C content was determined to be 36.8 ± 2.0 mol%.

Conclusions:

• Strain UKS3T represents a distinct species within the genus Myroides based on integrated taxonomic data.
• The novel species is named Myroides indicus sp. nov., with strain UKS3T as the type strain.
• This finding contributes to the taxonomic understanding of the Myroides genus.