Contrasting Patterns of Climatic Niche Divergence in Trebouxia-A Clade of Lichen-Forming Algae.

ABSTRACT: Lichen associations are overwhelmingly supported by carbon produced by photosynthetic algal symbionts. These algae have diversified to occupy nearly all climates and continents; however, we have a limited understanding of how their climatic niches have evolved through time. Here we extend previous work and ask whether phylogenetic signal in, and the evolution of, climatic niche, varies across climatic variables, phylogenetic scales, and among algal lineages in Trebouxia-the most common genus of lichen-forming algae. Our analyses reveal heterogeneous levels of phylogenetic signal across variables, and that contrasting models of evolution underlie the evolution of climatic niche divergence. Together these analyses demonstrate the variable processes responsible for shaping climatic tol

SUBMITTER: Nelsen MP 

PROVIDER: S-EPMC8886231 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature