ArticleGenetics2015
Evidence for emergence of sex-determining gene(s) in a centromeric region in Vasconcellea parviflora.
Article in Genetics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 31 citations in OpenAlex.
- Recombination suppression in plant adaptation and speciation.The New phytologist · 2026Review
- Whole-genome sequencing reveals a possible molecular basis of sex determination in the dioecious wild yam Dioscorea tokoro.PLoS genetics · 2026Article
- Sex chromosome pairing and multivalent associations during meiosis in diploid and polyploid Silene latifolia.Plant physiology · 2026Article
- Extensive Recombination Suppression and Genetic Degeneration of a Young ZW Sex Chromosome System in Halfbeak Fish.Molecular biology and evolution · 2025Article
- Appearance of transient heteromorphic large chromosome in glyphosate-resistant Amaranthus tuberculatus.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2025Article
- The origin and evolution of sex chromosomes, revealed by sequencing of the Silene latifolia female genome.Current biology : CB · 2023Article
- The Sister Chromatid Division of the Heteromorphic Sex Chromosomes inInternational journal of molecular sciences · 2022Article
- Interstitial Telomeric-like Repeats (ITR) in Seed Plants as Assessed by Molecular Cytogenetic Techniques: A Review.Plants (Basel, Switzerland) · 2021Review
- Widespread Recombination Suppression Facilitates Plant Sex Chromosome Evolution.Molecular biology and evolution · 2021Article
- The Diversity of Plant Sex Chromosomes Highlighted through Advances in Genome Sequencing.Genes · 2021Review
- Article
- Chromosome painting and comparative physical mapping of the sex chromosomes in Populus tomentosa and Populus deltoides.Chromosoma · 2018Article
- Cytogenetic comparison of heteromorphic and homomorphic sex chromosomes in Coccinia (Cucurbitaceae) points to sex chromosome turnover.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2017Article
- Sex-Biased Temporal Gene Expression in Male and Female Floral Buds of Seabuckthorn (Hippophae rhamnoides).PloS one · 2015Article
Corrections and comments
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Authors and funding
4 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Sex chromosomes have been studied in many plant and animal species. However, few species are suitable as models to study the evolutionary histories of sex chromosomes. We previously demonstrated that papaya (Carica papaya) (2n = 2x = 18), a fruit tree in the family Caricaceae, contains recently emerged but cytologically heteromorphic X/Y chromosomes. We have been intrigued by the possible presence and evolution of sex chromosomes in other dioecious Caricaceae species. We selected a set of 22 bacterial artificial chromosome (BAC) clones that are distributed along the papaya X/Y chromosomes. These BACs were mapped to the meiotic pachytene chromosomes of Vasconcellea parviflora (2n = 2x = 18), a species that diverged from papaya ∼27 million years ago. We demonstrate that V. parviflora contains a pair of heteromorphic X/Y chromosomes that are homologous to the papaya X/Y chromosomes. The comparative mapping results revealed that the male-specific regions of the Y chromosomes (MSYs) probably initiated near the centromere of the Y chromosomes in both species. The two MSYs, however, shared only a small chromosomal domain near the centromere in otherwise rearranged chromosomes. The V. parviflora MSY expanded toward the short arm of the chromosome, whereas the papaya MSY expanded in the opposite direction. Most BACs mapped to papaya MSY were not located in V. parviflora MSY, revealing different DNA compositions in the two MSYs. These results suggest that mutation of gene(s) in the centromeric region may have triggered sex chromosome evolution in these plant species.
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