Results 11 to 20 of about 1,446 (175)

Separated Sexes, Shared Consequences: Disentangling Predictors of Genetic Diversity in Dioecious Angiosperms [PDF]

Ecology and Evolution
Sexual systems such as dioecy, although rare in angiosperms, seem to enhance intrapopulation genetic diversity due to obligate outcrossing. Empirical studies had strengthened theoretical predictions that genetic diversity in dioecious angiosperms is ...
Thais Martins Teixeira, Alison Gonçalves Nazareno   +1 more
doaj   +3 more sources

Silene, a versatile model system: from sex and genome evolution to ecology and speciation. [PDF]

New Phytol
Summary Fundamental and applied research in evolutionary biology benefits from the use of model systems in which approaches from disparate disciplines can be integrated. Here, we review recent progress in evolutionary research on the long‐standing model system Silene, a large genus with a well‐resolved phylogeny and newly available, expanded genomic ...
Karrenberg S, Bačovský V, Berardi AE, De Cauwer I, Giraud T, Hartmann FE, Hobza R, Hudzieczek V, Marais GAB, Miladin JR, Oxelman B, Papadopulos AST, Sloan DB, Steven JC, Štorchová H, Touzet P, Van Rossum F.   +16 more
europepmc   +2 more sources

Seeds as space-time travelers: How does evolution balance the joint benefits and trade-offs of dormancy and dispersal? [PDF]

Am J Bot
American Journal of Botany, Volume 113, Issue 3, March 2026.
Backlund S, Stankowski S, Soler R.
europepmc   +2 more sources

Whole-genome sequencing reveals a possible molecular basis of sex determination in the dioecious wild yam Dioscorea tokoro. [PDF]

PLoS Genetics
Dioecious plants, which have distinct male and female individuals, constitute ~5% of angiosperm species and have emerged frequently and independently from hermaphroditic ancestors.
Aoi Kudoh, Satoshi Natsume, Yu Sugihara, Hiroaki Kato, Akira Abe, Kaori Oikawa, Motoki Shimizu, Kazue Itoh, Mai Tsujimura, Yoshitaka Takano, Toshiyuki Sakai, Hiroaki Adachi, Atsushi Ohta, Mina Ohtsu, Takuma Ishizaki, Toru Terachi, Hideki Innan, Ryohei Terauchi   +17 more
doaj   +2 more sources

Prickly Problems: Cylindropuntia's Low Genetic Diversity Despite Inbreeding Avoidance [PDF]

Ecology and Evolution
Dioecy, the separation of sexes, is found in 6% of flowering plants. One widely known hypothesis suggests that it is an adaptation to mitigate inbreeding. A contrary hypothesis suggests that dioecy is an evolutionary dead end.
Niveditha Ramadoss, Scarlet Steele, Lluvia Flores‐Renteria   +2 more
doaj   +2 more sources

Can Herbivore Feeding Preferences Reinforce the Female‐Biased Sex Ratio in an Alpine Willow? [PDF]

Ecol Evol
Sex‐biased herbivory can vary among co‐occurring herbivores and across the season. Sequential herbivory by species with different feeding preferences may influence the population dynamics of dioecious plants, particularly if early‐season herbivory alters plant traits that affect subsequent foraging decisions.
Barrio I, Bueno C, Hik D.
europepmc   +2 more sources

THE ROLE OF DIVERSIFICATION IN CAUSING THE CORRELATES OF DIOECY [PDF]

Evolution, 2004
Dioecy is reported to be correlated with a number of ecological traits, including tropical distribution, woody growth form, plain flowers, and fleshy fruits. Previous analyses have concentrated on determining whether dioecy is more likely to evolve in lineages possessing these traits, rather than considering the speciation and extinction rates of ...
Jana C, Vamosi, Steven M, Vamosi
openaire   +2 more sources

Multiple nuclear gene phylogenetic analysis of the evolution of dioecy and sex chromosomes in the genus Silene.

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, Alan Forrest, Esther Kamau, Jos Käfer, Vincent Daubin, Deborah Charlesworth   +5 more
doaj   +1 more source

Revision of Tinospora (Menispermaceae - Chasmantheroideae - Burasaieae) in Singapore

European Journal of Taxonomy, 2023
The lianescent genus Tinospora Miers in Singapore is revised. Four species are recognised, two of which are newly described. Tinospora krispura I.M.Turner sp. nov. is known from Christmas Island and Singapore. Tinospora singapura I.M.Turner sp. nov.
I.M. Turner
doaj   +1 more source

Cryptic dioecy and leaky dioecy in endemic species of Dombeya (Sterculiaceae) on La Re´union [PDF]

American Journal of Botany, 1999
The high frequency of dioecy on oceanic islands such as Hawaii and New Zealand has attracted a great deal of attention from plant evolutionary biologists. One reason suggested for the high prevalence of dioecy on oceanic islands is that taxa considered truly dioecious may have occasional hermaphrodite flowers, i.e., show leaky dioecy. In this study, we
L, Humeau, T, Pailler, J D, Thompson
openaire   +2 more sources