The rapid dissolution of dioecy by experimental evolution [PDF]
Current Biology, 2021 Evolutionary transitions from hermaphroditism to dioecy have been common in flowering plants,1,2 but recent analysis also points to frequent reversions from dioecy to hermaphroditism.2-4 Here, we use experimental evolution to expose a mechanism for such reversions, validating an explanation for the scattered phylogenetic distribution of dioecy.
Guillaume G. Cossard +4 more
semanticscholar +4 more sources
High incidence and correlates of dioecy in the flora of the Canadian Arctic Archipelago
Arctic Science, 2017 In comparing the incidence of dioecy in North American floras, we report a strong, positive correlation with increasing latitude. Dioecy in the High Arctic is highly correlated with woodiness, as elsewhere.
Peter G. Kevan, Becky Godglick
doaj +4 more sources
Dioecy Is Associated with High Genetic Diversity and Adaptation Rates in the Plant Genus Silene
Molecular biology and evolution, 2020 About 15,000 angiosperm species (∼6%) have separate sexes, a phenomenon known as dioecy. Why dioecious taxa are so rare is still an open question. Early work reported lower species richness in dioecious compared with nondioecious sister clades, raising ...
A. Muyle +11 more
semanticscholar +2 more sources
Bursts of Rapid Diversification, Dispersals Out of Southern Africa, and Two Origins of Dioecy Punctuate the Evolution of Asparagus. [PDF]
Genome Biol EvolThe genus Asparagus arose approximately 9–15 million years ago (Ma) and transitions from hermaphroditism to dioecy (separate sexes) occurred ∼3–4 Ma. Roughly 27% of extant Asparagus species are dioecious, while the remaining are bisexual with monoclinous
Bentz PC +10 more
europepmc +3 more sources
Dioecy in a wind-pollinated herb explained by disruptive selection on sex allocation via inbreeding avoidance. [PDF]
New PhytolThe evolution of dioecy from hermaphroditism is widely thought to be a response to disruptive selection favouring males and females, driven by advantages of inbreeding avoidance, sexual specialization, or both.
Chen KH, Pannell JR.
europepmc +3 more sources
Dioecy and chromosomal sex determination are maintained through allopolyploid speciation in the plant genus Mercurialis [PDF]
PLoS Genetics, 2022 Polyploidization may precipitate dramatic changes to the genome, including chromosome rearrangements, gene loss, and changes in gene expression. In dioecious plants, the sex-determining mechanism may also be disrupted by polyploidization, with the ...
Melissa A. Toups +2 more
semanticscholar +2 more sources
Multiple nuclear gene phylogenetic analysis of the evolution of dioecy and sex chromosomes in the genus Silene. [PDF]
PLoS ONE, 2011 In the plant genus Silene, separate sexes and sex chromosomes are believed to have evolved twice. Silene species that are wholly or largely hermaphroditic are assumed to represent the ancestral state from which dioecy evolved.
Gabriel A B Marais +5 more
doaj +2 more sources
Repeated evolution of dioecy from androdioecy in Acer [PDF]
New Phytologist, 2004 The evolution of breeding systems was studied in the genus Acer, with special attention to the origin of androdioecy and dioecy, using a phylogenetic approach. Parsimony and maximum-likelihood techniques were used to infer the ancestral character state and trends in the evolution of breeding systems.
Gleiser, G., Verdú, Miguel
openaire +4 more sources
Role of Pollinators in the Evolution of Dioecy from Distyly [PDF]
Evolution, 1980 Distylous flowering plant species are characterized by having two types of individuals that bear different forms of flowers: "pin" flowers with long styles and short stamens and "thrum" flowers with short styles and long stamens (Darwin, 1877; Frankel and Galun, 1977).
Beach, J. H., Bawa, K. S.
openaire +3 more sources
An angiosperm-wide analysis of the gynodioecy–dioecy pathway [PDF]
Annals of Botany, 2014 About 6 % of an estimated total of 240 000 species of angiosperms are dioecious. The main precursors of this sexual system are thought to be monoecy and gynodioecy. A previous angiosperm-wide study revealed that many dioecious species have evolved through the monoecy pathway; some case studies and a large body of theoretical research also provide ...
Dufaÿ, Mathilde +5 more
openaire +3 more sources