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Research article

J. Microbiol. Biotechnol. -0001; ():

Published online November 30, -0001 https://doi.org/10.4014/jmb.2012.12054

Copyright © The Korean Society for Microbiology and Biotechnology.

Assessment of Erythrobacter species diversity through pan-genome analysis with newly isolated Erythrobacter sp. 3-20A1M

Sang-Hyeok Cho1, Yujin Jeong1, Eunju Lee1, So-Ra Ko3, Chi-Yong Ahn3, Hee-Mock Oh3, Byung-Kwan Cho1,2*, and Suhyung Cho1,2*

1Department of Biological Sciences, Korea advanced institute of Science and Technology, Daejeon 34141, Republic of Korea;
2KI for the BioCentury, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea;
3Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea

Correspondence to:Byung-Kwan Cho, KI building C425, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea [34141]
Fax : +82-42-350-2660, E-mail : bcho@kaist.ac.kr

Received: December 30, 2020; Revised: February 1, 2021; Accepted: February 2, 2021

Abstract

Erythrobacter species are extensively studied marine bacteria that produce various carotenoids. Due to their photoheterotrophic ability, it has been suggested that they play a crucial role in marine ecosystems. It is essential to identify the genome sequence and the genes of the species to predict their role in the marine ecosystem. In this study, we report the complete genome sequence of the marine bacterium Erythrobacter sp. 3-20A1M. The genome size was 3.1 Mbp and its GC content was 64.8%. In total, 2998 genetic features were annotated, of which 2882 were annotated as functional coding genes. Using the genetic information of Erythrobacter sp. 3-20A1M, we performed pan-genome analysis with other Erythrobacter species. This revealed highly conserved secondary metabolite biosynthesis-related COG functions across Erythrobacter species. Through subsequent secondary metabolite biosynthetic gene cluster prediction and KEGG analysis, the carotenoid biosynthetic pathway was proven conserved in all Erythrobacter species, except for the spheroidene and spirilloxanthin pathways, which are only found in photosynthetic Erythrobacter species. The presence of virulence genes, especially the plant-algae cell wall degrading genes, revealed that Erythrobacter sp. 3-20A1M is a potential marine plant-algae scavenger.

Keywords: Erythrobacter, whole-genome sequencing, pan-genome analysis, secondary metabolites