Plastome Structural Evolution and Homoplastic Inversions in Neo-Astragalus (Fabaceae).

ABSTRACT: The plastid genomes of photosynthetic green plants have largely maintained conserved gene content and order as well as structure over hundreds of millions of years of evolution. Several plant lineages, however, have departed from this conservation and contain many plastome structural rearrangements, which have been associated with an abundance of repeated sequences both overall and near rearrangement endpoints. We sequenced the plastomes of 25 taxa of Astragalus L. (Fabaceae), a large genus in the inverted repeat-lacking clade of legumes, to gain a greater understanding of the connection between repeats and plastome inversions. We found plastome repeat structure has a strong phylogenetic signal among these closely related taxa mostly in the New World clade of Astragalus called Neo-Astragal

SUBMITTER: Charboneau JLM 

PROVIDER: S-EPMC8486006 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature