TY - JOUR

T1 - Genomic incongruence accompanies the evolution of flower symmetry in Eudicots

T2 - a case study in the poppy family (Papaveraceae, Ranunculales)

AU - Pokorny, Lisa

AU - Pellicer, Jaume

AU - Woudstra, Yannick

AU - Christenhusz, Maarten J. M.

AU - Garnatje, Teresa

AU - Palazzesi, Luis

AU - Johnson, Matthew G.

AU - Maurin, Olivier

AU - Françoso, Elaine

AU - Roy, Shyamali

AU - Leitch, Ilia J.

AU - Forest, Félix

AU - Baker, William J.

AU - Hidalgo, Oriane

N1 - Copyright © 2024 Pokorny, Pellicer, Woudstra, Christenhusz, Garnatje, Palazzesi, Johnson, Maurin, Françoso, Roy, Leitch, Forest, Baker and Hidalgo.

PY - 2024

Y1 - 2024

N2 - Reconstructing evolutionary trajectories and transitions that have shaped floral diversity relies heavily on the phylogenetic framework on which traits are modelled. In this study, we focus on the angiosperm order Ranunculales, sister to all other eudicots, to unravel higher-level relationships, especially those tied to evolutionary transitions in flower symmetry within the family Papaveraceae. This family presents an astonishing array of floral diversity, with actinomorphic, disymmetric (two perpendicular symmetry axes), and zygomorphic flowers. We generated nuclear and plastid datasets using the Angiosperms353 universal probe set for target capture sequencing (of 353 single-copy nuclear ortholog genes), together with publicly available transcriptome and plastome data mined from open-access online repositories. We relied on the fossil record of the order Ranunculales to date our phylogenies and to establish a timeline of events. Our phylogenomic workflow shows that nuclear-plastid incongruence accompanies topological uncertainties in Ranunculales. A cocktail of incomplete lineage sorting, post-hybridization introgression, and extinction following rapid speciation most likely explain the observed knots in the topology. These knots coincide with major floral symmetry transitions and thus obscure the order of evolutionary events.

AB - Reconstructing evolutionary trajectories and transitions that have shaped floral diversity relies heavily on the phylogenetic framework on which traits are modelled. In this study, we focus on the angiosperm order Ranunculales, sister to all other eudicots, to unravel higher-level relationships, especially those tied to evolutionary transitions in flower symmetry within the family Papaveraceae. This family presents an astonishing array of floral diversity, with actinomorphic, disymmetric (two perpendicular symmetry axes), and zygomorphic flowers. We generated nuclear and plastid datasets using the Angiosperms353 universal probe set for target capture sequencing (of 353 single-copy nuclear ortholog genes), together with publicly available transcriptome and plastome data mined from open-access online repositories. We relied on the fossil record of the order Ranunculales to date our phylogenies and to establish a timeline of events. Our phylogenomic workflow shows that nuclear-plastid incongruence accompanies topological uncertainties in Ranunculales. A cocktail of incomplete lineage sorting, post-hybridization introgression, and extinction following rapid speciation most likely explain the observed knots in the topology. These knots coincide with major floral symmetry transitions and thus obscure the order of evolutionary events.

U2 - 10.3389/fpls.2024.1340056

DO - 10.3389/fpls.2024.1340056

M3 - Journal article

C2 - 38947944

VL - 15

JO - Frontiers in Plant Science

JF - Frontiers in Plant Science

SN - 1664-462X

M1 - 1340056

ER -