New insights into polyploid evolution and dynamic nature of Ludwigia section Isnardia (Onagraceae).

ABSTRACT:

Background

While polyploids are common in plants, the evolutionary history and natural dynamics of most polyploid groups are still unclear. Owing to plentiful earlier systematic studies, Ludwigia sect. Isnardia (comprising 22 wetland taxa) is an ideal allopolyploid complex to investigate polyploid evolution and natural dynamics within and among taxa. With a considerable sampling, we concentrated on revisiting earlier phylogenies of Isnardia, reevaluating the earlier estimated age of the most recent common ancestor (TMRCA), exploring the correlation between infraspecific genetic diversity and ploidy levels, and inspecting interspecific gene flows among taxa.

Results

Phylogenetic trees and network concurred with earlier phylogenies and hypothesized genomes by incorporating 192

SUBMITTER: Liu SH 

PROVIDER: S-EPMC10239408 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature