ArticleHorticulture research2022
Chloroplast phylogenomics in Camelina (Brassicaceae) reveals multiple origins of polyploid species and the maternal lineage of C. sativa.
Article in Horticulture research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 33 citations in OpenAlex.
- A fourth subgenome of the Camelina genus reveals gene dominance is influenced by chromosomal proximity.Nature communications · 2026Article
- Complete chloroplast genome of Triticum aestivum cultivar 'Keumkang' from Korea (Poaceae) and comparative chloroplast genomes of the members of the Triticum genus.Journal of the science of food and agriculture · 2026Article
- Characterization of the chloroplast genome of a relict tree, Pterocarya fraxinifolia (Juglandaceae), and its comparative analysis.Scientific reports · 2025Article
- Insights into the plastome evolution and phylogenetic relationships of Lepidium (Brassicaceae).BMC plant biology · 2025Article
- Comparative chloroplast genomics provides insights into the phylogenetic relationships and evolutionary history for Actinidia species.Scientific reports · 2025Article
- Genome-wide identification and diversity of FAD2, FAD3 and FAE1 genes in terms of biotechnological importance in Camelina species.BMC biotechnology · 2024Article
- Exploring genetic diversity, population structure, and subgenome differences in the allopolyploidHorticulture research · 2024Article
- Chloroplast and whole-genome sequencing shed light on the evolutionary history and phenotypic diversification of peanuts.Nature genetics · 2024Article
- Genomes of Meniocus linifolius and Tetracme quadricornis reveal the ancestral karyotype and genomic features of core Brassicaceae.Plant communications · 2024Article
- Chromosome-level assembly and analysis of Camelina neglecta: a novel diploid model for Camelina biotechnology research.Biotechnology for biofuels and bioproducts · 2024Article
- The complete chloroplast genome ofMitochondrial DNA. Part B, Resources · 2024Article
- Sequencing of Camelina neglecta, a diploid progenitor of the hexaploid oilseed Camelina sativa.Plant biotechnology journal · 2023Article
- Overcoming genetic paucity ofFrontiers in plant science · 2023Review
- The evolution of the hypotetraploidFrontiers in plant science · 2023Article
- Molecular and archaeological evidence on the geographical origin of domestication for Camelina sativa.American journal of botany · 2022Article
- Realizing the Potential ofPlants (Basel, Switzerland) · 2022Review
- The population genomic analyses of chloroplast genomes shed new insights on the complicated ploidy and evolutionary history inFrontiers in plant science · 2022Article
- Comparative Chloroplast Genomes ofFrontiers in plant science · 2022Article
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Authors and funding
5 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The genus Camelina (Brassicaceae) comprises 7-8 diploid, tetraploid, and hexaploid species. Of particular agricultural interest is the biofuel crop, C. sativa (gold-of-pleasure or false flax), an allohexaploid domesticated from the widespread weed, C. microcarpa. Recent cytogenetics and genomics work has uncovered the identity of the parental diploid species involved in ancient polyploidization events in Camelina. However, little is known about the maternal subgenome ancestry of contemporary polyploid species. To determine the diploid maternal contributors of polyploid Camelina lineages, we sequenced and assembled 84 Camelina chloroplast genomes for phylogenetic analysis. Divergence time estimation was used to infer the timing of polyploidization events. Chromosome counts were also determined for 82 individuals to assess ploidy and cytotypic variation. Chloroplast genomes showed minimal divergence across the genus, with no observed gene-loss or structural variation. Phylogenetic analyses revealed C. hispida as a maternal diploid parent to the allotetraploid Camelina rumelica, and C. neglecta as the closest extant diploid contributor to the allohexaploids C. microcarpa and C. sativa. The tetraploid C. rumelica appears to have evolved through multiple independent hybridization events. Divergence times for polyploid lineages closely related to C. sativa were all inferred to be very recent, at only ~65 thousand years ago. Chromosome counts confirm that there are two distinct cytotypes within C. microcarpa (2n = 38 and 2n = 40). Based on these findings and other recent research, we propose a model of Camelina subgenome relationships representing our current understanding of the hybridization and polyploidization history of this recently-diverged genus.
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