Yusuke Okazaki

This study characterizes freshwater SAR11 HVR2 sequences, revealing high intra-population diversity and conserved functional configurations across marine and freshwater lineages.

This study identifies biogeographic patterns of freshwater giant viruses using MAGs from deep lakes, revealing cosmopolitan and restricted species, and factors influencing their distribution.

This study identifies a 180-kbp genomic region horizontally transferred among pandoraviruses, contributing to their genomic expansion and evolution.

The paper tracks genetic structure and transcription of Heterosigma akashiwo virus during a host bloom, revealing rapid diversification driven by host selection and pre-existing variants.

The paper identifies deep-sea-specific giant viruses with persistent activity and characterizes their unique gene functions adapted to aphotic environments.

The paper investigates DOM-microbe interactions in a deep freshwater lake using metabolomics and microbiome analysis, finding complex networks in the hypolimnion with recalcitrant compounds.

The paper uses single-cell genomics to analyze virus-host interactions in freshwater bacteria, revealing differences in infection rates and defense strategies between copiotrophs and oligotrophs.

This study analyzes giant virus dynamics using metagenomic data, revealing year-round recovery and distinct population dynamics linked to microdiversity and niche breadth.

The paper investigates viral horizontal gene transfer (vHGT) among nucleocytoviruses and finds it accounts for 28% to 42% of gene gain events in each viral order.

This study uses long-read metagenomics to reconstruct giant virus genomes from a freshwater lake, revealing new species and ecological roles in different water depths.

This study characterizes sinking and suspended microeukaryotic communities in Oyashio waters using 18S rDNA metabarcoding, revealing depth-related differences and functional roles in the biological carbon pump.