Results 21 to 30 of about 3,902 (197)

Paternal Inheritance of Mitochondrial DNA May Lead to Dioecy in Conifers. [PDF]

Acta Biotheor
In angiosperms cytoplasmic DNA is typically passed on maternally through ovules. Genes in the mtDNA may cause male sterility. When male-sterile (female) cytotypes produce more seeds than cosexuals, they pass on more copies of their mtDNA and will co ...
de Jong TJ, Shmida A.
europepmc   +2 more sources

Young evolutionary origins of dioecy in the genus Asparagus

American Journal of Botany
PREMISE Dioecy (separate sexes) has independently evolved numerous times across the angiosperm phylogeny and is recently derived in many lineages. However, our understanding is limited regarding the evolutionary mechanisms that drive the origins of ...
Jun-Bo Yang, Akira Kanno, Zhengjie Liu
exaly   +2 more sources

Retrotransposon Proliferation Coincident with the Evolution of Dioecy in Asparagus

G3: Genes, Genomes, Genetics, 2016
Current phylogenetic sampling reveals that dioecy and an XY sex chromosome pair evolved once, or possibly twice, in the genus Asparagus. Although there appear to be some lineage-specific polyploidization events, the base chromosome number of 2n = 2× = 20
Alex Harkess, Francesco Mercati, Loredana Abbate, Michael McKain, J. Chris Pires, Tea Sala, Francesco Sunseri, Agostino Falavigna, Jim Leebens-Mack   +8 more
doaj   +2 more sources

Haplotype-resolved genome assembly of a male Dioscorea alata cultivar reveals the structure and evolution of young sex chromosomes. [PDF]

Plant J
SUMMARY Dioscorea alata L., the most widely cultivated yam species, exhibits dioecy (XY system) and a strong male‐biased sex ratio. These two major constraints limit parental combinations and hinder breeding progress. To get insight into the sex chromosome structure and evolution in D.
Dossa K, Su X, Zoclanclounon YAB, Chen Y, Nawaz MA, Ni P, Qiu T, Chen G, Malédon E, Gravillon MC, Perrot C, Nudol E, Laurent L, Diouf M, Dobrev PI, Karikari B, Fouks B, Arnau G, Mournet P, Wang J, Chaïr H.   +20 more
europepmc   +2 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

A convergent mechanism of sex determination in dioecious plants: Distinct sex-determining genes display converged regulation on floral B-class genes

Frontiers in Plant Science, 2022
Sex determination in dioecious plants has been broadly and progressively studied with the blooming of genome sequencing and editing techniques. This provides us with a great opportunity to explore the evolution and genetic mechanisms underlining the sex ...
Xianzhi Zhang, Linsi Pan, Wei Guo, Yongquan Li, Wencai Wang   +4 more
doaj   +1 more source

Two dioecious Simarouba species with a specialized pollination system and low reproductive efficacy in Central Brazil

Rodriguésia, 2022
Several possible correlations between dioecy and eco-morphological features have been suggested to infer the conditions that would favor this sexual system. Dioecy has been associated either with specialized or generalized pollination systems.
Indiara Nunes Mesquita Ferreira, Raysa Kristine de Oliveira Cavalcante, João Paulo Raimundo Borges, Tamara Poliana de Oliveira Teixeira, Daniel Paiva Silva, Túlio Sá, Edivani Villaron Franceschinelli   +6 more
doaj   +1 more source

The Diversity and Dynamics of Sex Determination in Dioecious Plants

Frontiers in Plant Science, 2021
The diversity of inflorescences among flowering plants is captivating. Such charm is not only due to the variety of sizes, shapes, colors, and flowers displayed, but also to the range of reproductive systems. For instance, hermaphrodites occur abundantly
Ana Paula Leite Montalvão, Birgit Kersten, Matthias Fladung, Niels Andreas Müller   +3 more
doaj   +1 more source

The distribution of sexual function in the flowering plant: from monoecy to dioecy

Philosophical Transactions of the Royal Society of London. Biological Sciences, 2022
In flowering plants, male and female functions are usually closely associated in the same flowers, as predicted by resource allocation theory. However, the benefits of outbreeding can lead to unisexual flowers and the physiological control of their ...
Q. Cronk
semanticscholar   +1 more source

ARR17 controls dioecy in Populus by repressing B-class MADS-box gene expression

Philosophical Transactions of the Royal Society of London. Biological Sciences, 2022
The number of dioecious species for which the genetic basis of sex determination has been resolved is rapidly increasing. Nevertheless, the molecular mechanisms downstream of the sex determinants remain largely elusive.
A. P. Leite Montalvão, B. Kersten, Gihwan Kim, M. Fladung, Niels A. Müller   +4 more
semanticscholar   +1 more source