ArticleG3 (Bethesda, Md.)2016
Retrotransposon Proliferation Coincident with the Evolution of Dioecy in Asparagus.
Article in G3 (Bethesda, Md.), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed.
- Genome-Wide Identification and Expression Analysis of the AS2/LOB Transcription Factor Family inGenes · 2025Article
- Analyses of contiguous reference genomes of Amaranthus tuberculatus highlight the landscape of the sex-associated region and PEBP gene family diversity.BMC genomics · 2025Article
- Bursts of Rapid Diversification, Dispersals Out of Southern Africa, and Two Origins of Dioecy Punctuate the Evolution of Asparagus.Genome biology and evolution · 2024Article
- Mobilome of theInternational journal of molecular sciences · 2022Article
- Article
- Comparative phylogenetics of repetitive elements in a diverse order of flowering plants (Brassicales).G3 (Bethesda, Md.) · 2021Article
- Genetic Distinctiveness Highlights the Conservation Value of a Sicilian Manna Ash Germplasm Collection Assigned toPlants (Basel, Switzerland) · 2020Article
- Genome size variation at constant chromosome number is not correlated with repetitive DNA dynamism in Anacyclus (Asteraceae).Annals of botany · 2020Article
- Characterization of Sicilian rosemary (Rosmarinus officinalis L.) germplasm through a multidisciplinary approach.Planta · 2020Article
- Evolution of Tandem Repeats Is Mirroring Post-polyploid Cladogenesis inFrontiers in plant science · 2020Article
- Article
- The landscape of transposable elements and satellite DNAs in the genome of a dioecious plant spinach (Mobile DNA · 2019Article
- Sex and the flower - developmental aspects of sex chromosome evolution.Annals of botany · 2018Review
- Satellite DNA in Paphiopedilum subgenus Parvisepalum as revealed by high-throughput sequencing and fluorescent in situ hybridization.BMC genomics · 2018Article
- Practical considerations for plant phylogenomics.Applications in plant sciences · 2018Review
- The slowdown of Y chromosome expansion in dioecious Silene latifolia due to DNA loss and male-specific silencing of retrotransposons.BMC genomics · 2018Article
- The asparagus genome sheds light on the origin and evolution of a young Y chromosome.Nature communications · 2017Article
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
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 is relatively conserved across the Asparagus genus. Regardless, dioecious species tend to have larger genomes than hermaphroditic species. Here, we test whether this genome size expansion in dioecious species is related to a polyploidization and subsequent chromosome fusion, or to retrotransposon proliferation in dioecious species. We first estimate genome sizes, or use published values, for four hermaphrodites and four dioecious species distributed across the phylogeny, and show that dioecious species typically have larger genomes than hermaphroditic species. Utilizing a phylogenomic approach, we find no evidence for ancient polyploidization contributing to increased genome sizes of sampled dioecious species. We do find support for an ancient whole genome duplication (WGD) event predating the diversification of the Asparagus genus. Repetitive DNA content of the four hermaphroditic and four dioecious species was characterized based on randomly sampled whole genome shotgun sequencing, and common elements were annotated. Across our broad phylogenetic sampling, Ty-1 Copia retroelements, in particular, have undergone a marked proliferation in dioecious species. In the absence of a detectable WGD event, retrotransposon proliferation is the most likely explanation for the precipitous increase in genome size in dioecious Asparagus species.
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