Integrative analysis of plastome, single-copy nuclear gene <i>Pgk1</i> and SLAF-seq data uncovers multiple-origin and introgression history in polyploid <i>Agropyron cristatum</i>.

ABSTRACT: Elucidating the origins and mechanisms of polyploidization requires tracing the evolutionary history of polyploid species, particularly those with complex origins. Agropyron cristatum, traditionally regarded as an autopolyploid, exhibits characteristics indicative of a segmental allopolyploid. Here, we used phylogenetic analysis based on a low-copy nuclear gene (i.e., Pgk1), SLAF-seq, and plastome data from 20 diploid and 120 tetraploid Agropyron individuals to determine whether tetraploid A. cristatum arose from an allopolyploid or autopolyploid event. Phylogenetic analyses based on Pgk1 and SLAF-seq data identified two distinct A. cristatum lineages that corresponded to the two main Agropyron habitats in Central Asia-Europe and East Asia-Q

SUBMITTER: Yan H 

PROVIDER: S-EPMC12918207 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature