Asexual Evolution and Forest Conditions Drive Genetic Parallelism in Phytophthora ramorum.

ABSTRACT: It is commonly assumed that asexual lineages are short-lived evolutionarily, yet many asexual organisms can generate genetic and phenotypic variation, providing an avenue for further evolution. Previous work on the asexual plant pathogen Phytophthora ramorum NA1 revealed considerable genetic variation in the form of Structural Variants (SVs). To better understand how SVs arise and their significance to the California NA1 population, we studied the evolutionary histories of SVs and the forest conditions associated with their emergence. Ancestral state reconstruction suggests that SVs arose by somatic mutations among multiple independent lineages, rather than by recombination. We asked if this unusual phenomenon of parallel evolution between isolated populations is transmitted to exta

SUBMITTER: Yuzon JD 

PROVIDER: S-EPMC7357085 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature