Core Genome of Deinococcota Phylum from 72 Strains Across 40 Species Consist of Only One Gene, Beta Subunit of DNA-Directed RNA Polymerase
Aaron KY Lum1,2, Josephine H Shanmugam1,2, Waylen Teo1,2, Zhao Jie Kwan1,2, Shaunnessy MH Ng1,2 and Maurice HT Ling1,2,3*
1School of Life Sciences, Management Development Institute of Singapore, Singapore
2Department of Applied Sciences, Northumbria University, United Kingdom
3HOHY PTE LTD, Singapore
*Corresponding Author: Maurice HT Ling, School of Life Sciences, Management Development Institute of Singapore, Singapore; Department of Applied Sciences, Northumbria University, United Kingdom; HOHY PTE LTD, Singapore.
Published: January 24, 2024
Deinococcota, or Deinococcus-Thermus, is a phylum of highly environmentally tolerant extremophiles with value in industrial applications and evolution studies. Phylogenetics using core genome is an important aspect of evolutionary studies. However, the core genome of Deinococcota phylum has not yet been identified. In this study, we report 6 species-specific core genomes of Deinococcota. However, the core genome of Deinococcota from 72 strains across 40 species consist of only one gene - beta subunit of DNA-directed RNA polymerase. This surprisingly small core genome may be the result of tolerance to diverse environments and may suggest that sequence similarity alone may not be sufficient enough to identify core genomes.