Recurrent gene duplication in the angiosperm tribe Delphinieae (Ranunculaceae) inferred from intracellular gene transfer events and heteroplasmic mutations in the plastid matK gene.

ABSTRACT: The study of intracellular gene transfer may allow for the detection of interesting evolutionary processes such as ancient polyploidization. We compared 24 plastid genomes (plastomes) from tribe Delphinieae, one from tribe Nigelleae and one from tribe Ranunculeae, including five newly sequenced genomes. The functional transfers of the plastids rpl32 and rps16 to the nucleus in tribe Delphinieae were identified. Unexpectedly, we discovered multiple divergent copies of the nuclear-encoded plastid rpl32 in the genus Aconitum. Phylogenetic and synonymous substitution rate analyses revealed that the nuclear-encoded plastid rpl32 underwent two major duplication events. These ancient gene duplication events probably occurred via multiple polyploidization events in Aconitum between 11.9 and 24.7 M

SUBMITTER: Park S 

PROVIDER: S-EPMC7026143 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature