Genome-Wide Comparisons Reveal Extensive Divergence Within the Lichen Photobiont Genus, Trebouxia.

ABSTRACT: The green algal genus Trebouxia is the most frequently encountered photobiont of the lichen symbiosis. The single-celled symbionts have a worldwide distribution, including all continents and climate zones. The vast, largely undescribed, diversity of Trebouxia lineages is currently grouped into four phylogenetic clades (A, C, I, and S), based on a multilocus phylogeny. Genomes are still scarce, however, and it is unclear how the phylogenetic diversity, the broad ecological tolerances, and the ability to form symbioses with many different fungal host species are reflected in genome-wide differences. Here, we generated PacBio-based de novo genomes of six Trebouxia lineages belonging to the Clades A and S, isolated from lichen individuals of the genus Umbilicaria. Sequences belonging to Clade

SUBMITTER: Poquita-Du RC 

PROVIDER: S-EPMC11523091 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature