Results 31 to 40 of about 3,902 (197)

Mediation of a Mutualistic Conflict for Pollination via Fig Phenology and Odor Recognition between Ficus and Fig Wasp

open access: yesPlants, 2022
The vegetative and reproductive growth of plants provide the basic tempo for an ecosystem, and when species are interdependent, phenology becomes crucial to regulating the quantity and quality of the interactions. In plant–insect interactions, the plants
Wen-Hsuan Chen   +4 more
doaj   +1 more source

A Multidisciplinary Study of Wild Grapevines in the River Crati Natural Reserve, South Italy (Calabria): Implications in Conservation Biology and Palaeoecological Reconstructions

open access: yesQuaternary, 2023
Nowadays, wild grapevine populations are quite limited and sporadic mainly due to habitat destruction, land-use change, and the spread of pathogens that have reduced their distribution range.
Eleonora Clò   +9 more
doaj   +1 more source

Dioecy and chromosomal sex determination are maintained through allopolyploid speciation in the plant genus Mercurialis

open access: yesPLoS 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   +1 more source

A Foundational Population Genetics Investigation of the Sexual Systems of Solanum (Solanaceae) in the Australian Monsoon Tropics Suggests Dioecious Taxa May Benefit from Increased Genetic Admixture via Obligate Outcrossing

open access: yesPlants, 2023
Solanum section Leptostemonum is an ideal lineage to test the theoretical framework regarding proposed evolutionary benefits of outcrossing sexual systems in comparison to cosexuality.
Jason T. Cantley   +5 more
doaj   +1 more source

The persimmon genome reveals clues to the evolution of a lineage-specific sex determination system in plants.

open access: yesPLoS Genetics, 2020
Most angiosperms bear hermaphroditic flowers, but a few species have evolved outcrossing strategies, such as dioecy, the presence of separate male and female individuals. We previously investigated the mechanisms underlying dioecy in diploid persimmon (D.
Takashi Akagi   +6 more
doaj   +1 more source

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

open access: yesEuropean 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

Anther structure and pollen development in species of Rubiaceae and anatomical evidence of pathway to morphological dioecy.

open access: yesAnais da Academia Brasileira de Ciências, 2022
we conducted anatomical analysis of anthers with the aim to establish the differences in the development pattern of microsporophytes and microgametophytes between perfect and imperfect flowers in the tribe Gardenieae (Rubiaceae). The species studied were:
M. D. Judkevich   +2 more
semanticscholar   +1 more source

Molecular and genetic mechanisms conferring dissolution of dioecy in Diospyros oleifera Cheng

open access: yesbioRxiv, 2022
Dioecy, a sexual system of single-sex (gynoecious/androecious) individuals, is rare in flowering plants. This rarity may be a result of the frequent transition from dioecy into systems with co-sex individuals.
Peng Sun   +14 more
semanticscholar   +1 more source

Pollen and anther development malfunction in distylous flowers of Palicourea padifolia (Rubiaceae)

open access: yesBotan‪ical Sciences, 2020
Background: Heterostyly is a genetic polymorphism in which flowers differ between individual plants of a species in heights at which stamens and style are reciprocally positioned.
Juan Francisco Ornelas   +2 more
doaj   +1 more source

Notes on cauliflory, sexual dimorphism and biogeography in Drypetes (Putranjivaceae, Malpighiales) and a taxonomic treatment for D. gabonensis and two new cauliflorous threatened species from Central Africa, D. aphanes sp. nov. and D. cauta sp. nov.

open access: yesEuropean Journal of Taxonomy, 2023
We present a preliminary discussion about cauliflory, sexual dimorphism and biogeographic patterns in Drypetes Vahl (Putranjivaceae Endl.), focused on Africa.
Alejandro Quintanar   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy