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Comparative genomics of symbiotic Photobacterium using highly contiguous genome assemblies from long read sequences

Citation
Gould, Henderson (2023). Microbial Genomics 9 (12)
Names
“Photobacterium acropomis”
Abstract
This study presents the assembly and comparative genomic analysis of luminous Photobacterium strains isolated from the light organs of 12 fish species using Oxford Nanopore Technologies (ONT) sequencing. The majority of assemblies achieved chromosome-level continuity, consisting of one large (>3 Mbp) and one small (~1.5 Mbp) contig, with near complete BUSCO scores along with varying plasmid sequences. Leve

'Candidatus Megaira' are diverse symbionts of algae and ciliates with the potential for defensive symbiosis

Citation
Davison et al. (2023). Microbial Genomics 9 (3)
Names
Ca. Megaira
Abstract
Symbiotic microbes from the genus 'Candidatus Megaira' ( Rickettsiales ) are known to be common associates of algae and ciliates. However, genomic resources for these bacteria are scarce, limiting our understanding of their diversity and biology. We therefore utilize Sequence Read Archive and metagenomic assemblies to explore the diversity of this genus. We successfully extract four draft 'Ca. Megaira' genomes

At the threshold of symbiosis: the genome of obligately endosymbiotic ‘Candidatus Nebulobacter yamunensis’ is almost indistinguishable from that of a cultivable strain

Citation
Giannotti et al. (2022). Microbial Genomics 8 (12)
Names
Ca. Nebulobacter yamunensis Ca. Nebulobacter
Abstract
Comparing obligate endosymbionts with their free-living relatives is a powerful approach to investigate the evolution of symbioses, and it has led to the identification of several genomic traits consistently associated with the establishment of symbiosis. ‘Candidatus Nebulobacter yamunensis’ is an obligate bacterial endosymbiont of the ciliate Euplotes that seemingly depends on its host for survival. A subsequently characterized bacterial strain with an identical 16S rRNA gene sequence, named