Data from: Small and ugly? Phylogenetic analyses of the “selfing syndrome” reveal complex evolutionary fates of monomorphic primrose flowers
de Vos, Jurriaan M., Brown University
Wüest, Rafael O., Swiss Federal Institute for Forest, Snow and Landscape Research
Conti, Elena, University of Zurich
Published Nov 26, 2013 on Dryad.
Cite this dataset
de Vos, Jurriaan M.; Wüest, Rafael O.; Conti, Elena (2013). Data from: Small and ugly? Phylogenetic analyses of the “selfing syndrome” reveal complex evolutionary fates of monomorphic primrose flowers [Dataset]. Dryad. https://doi.org/10.5061/dryad.vq2m6
One of the most common trends in plant evolution, loss of self-incompatibility and ensuing increases in selfing, is generally assumed to be associated with a suite of phenotypic changes, notably a reduction of floral size, termed the selfing syndrome. We investigate whether floral morphological traits indeed decrease in a deterministic fashion after losses of self-incompatibility, as traditionally expected, using a phylogeny of 124 primrose species containing nine independent transitions from heterostyly (heteromorphic incompatibility) to homostyly (monomorphic self-compatibility), a classic system for evolution of selfing. We find similar overall variability of homostylous and heterostylous species, except for diminished herkogamy in homostyles. Bayesian mixed models demonstrate differences between homostylous and heterostylous species in all traits, but net effects across species are small (except herkogamy) and directionality differs among traits. Strongly drift-like evolutionary trajectories of corolla tube length and corolla diameter inferred by Ornstein-Uhlenbeck models contrast with expected deterministic trajectories toward small floral size. Lineage-specific population genetic effects associated with evolution of selfing may explain that reductions of floral size represent one of several possible outcomes of floral evolution after loss of heterostyly in primroses. Contrary to the traditional paradigm, selfing syndromes may, but do not necessarily evolve in response to increased selfing.
Quantitative morphological data, 124 primrose species
Binary scoring of heterostyly, 124 taxa dataset
Contains scoring (heterostyly, homostyly) of breeding system for the 124 taxa of the Primula clade
Binary scoring of heterostyly, 265 Primulaceae taxa
Contains scoring of breeding system for the 265 taxa of Primulaceae s.str.
Species means data, 124 primrose species
Contains species means, calculated from the data in file "morphoAlldata_124taxa_Dryad.txt".
Rows represent species with their means. Column "n_obs" is the number of observations from which the means were calculated. Other columns as for "morphoAlldata_124taxa_Dryad.txt".
Primulaceae phylogeny 265 taxa chronogram
Contains maximum clade credibility tree with median node heights of 265 Primulaceae taxa, based on a 3 locus cpDNA dataset. Branchlengths in absolute time (MY), estimated using the UCLN clock model in BEAST. Tree is taken from the study of De Vos JM, Hughes C, Schneeweiss GM, Moore BR, Conti E. Heterostyly accelerates diversification via reduced extinction in Darwin’s primroses. Submitted manuscript. TreeBASE reference TB2:S14824
Primula phylogeny, 124 taxa chronogram
Contains the phylogenetic tree for the 124 taxa of the Primula clade, obtained by pruning branches from the 265 taxon tree.