Complete Genomes of Chitose and Buffeli Genotypes Reveal Within Species Translocations and Differences in ABC Transporter Content

Overview

Journal Pathogens

Date 2022 Jul 27

PMID 35890045

Authors

Jerald Yam

Daniel R Bogema

Melinda L Micallef

Steven P Djordjevic

Cheryl Jenkins

Affiliations

Soon will be listed here.

Abstract

causes losses to cattle producers in Eastern Asia, Oceania and, more recently, North America. One pathogenic genotype (Ikeda) has been sequenced to the chromosomal level, while only draft genomes exist for globally distributed Chitose and Buffeli genotypes. To provide an accurate comparative gene-level analysis and help further understand their pathogenicity, we sequenced isolates of the Chitose and Buffeli genotypes of using long-read sequencing technology. A combination of several long-read assembly methods and short reads produced chromosomal-level assemblies for both Fish Creek (Chitose) and Goon Nure (Buffeli) isolates, including the first complete and circular apicoplast genomes generated for . Comparison with the Shintoku (Ikeda) reference sequence showed both large and small translocations in Buffeli, between chromosomes 2 and 3 and chromosomes 1 and 4, respectively. Ortholog clustering showed expansion of ABC transporter genes in Chitose and Buffeli. However, differences in several genes of unknown function, including DUF529/FAINT-domain-containing proteins, were also identified and these genes were more prevalent in Ikeda and Chitose genotypes. Phylogenetics and similarity measures were consistent with previous short-read genomic analysis. The generation of chromosomal sequences for these highly prevalent genotypes will also support future studies of population genetics and mixed genotype infections.

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