Genome Biology, 2022-01, Vol.23 (1), p.14-14, Article 14
2022
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Details
- Autor(en) / Beteiligte
- Titel
- The genome of oil-Camellia and population genomics analysis provide insights into seed oil domestication
- Ist Teil von
- Genome Biology, 2022-01, Vol.23 (1), p.14-14, Article 14
- Ort / Verlag
- England: BioMed Central
- Erscheinungsjahr
- 2022
- Quelle
- Free E-Journal (出版社公開部分のみ）
- Beschreibungen/Notizen
- As a perennial crop, oil-Camellia possesses a long domestication history and produces high-quality seed oil that is beneficial to human health. Camellia oleifera Abel. is a sister species to the tea plant, which is extensively cultivated for edible oil production. However, the molecular mechanism of the domestication of oil-Camellia is still limited due to the lack of sufficient genomic information. To elucidate the genetic and genomic basis of evolution and domestication, here we report a chromosome-scale reference genome of wild oil-Camellia (2.95 Gb), together with transcriptome sequencing data of 221 cultivars. The oil-Camellia genome, assembled by an integrative approach of multiple sequencing technologies, consists of a large proportion of repetitive elements (76.1%) and high heterozygosity (2.52%). We construct a genetic map of high-density corrected markers by sequencing the controlled-pollination hybrids. Genome-wide association studies reveal a subset of artificially selected genes that are involved in the oil biosynthesis and phytohormone pathways. Particularly, we identify the elite alleles of genes encoding sugar-dependent triacylglycerol lipase 1, β-ketoacyl-acyl carrier protein synthase III, and stearoyl-acyl carrier protein desaturases; these alleles play important roles in enhancing the yield and quality of seed oil during oil-Camellia domestication. We generate a chromosome-scale reference genome for oil-Camellia plants and demonstrate that the artificial selection of elite alleles of genes involved in oil biosynthesis contributes to oil-Camellia domestication.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1474-760X, 1474-7596eISSN: 1474-760XDOI: 10.1186/s13059-021-02599-2Titel-ID: cdi_doaj_primary_oai_doaj_org_article_cac33a01c8674612afcaa8fb6353fc89
- Format
- –
- Schlagworte
- Acyl carrier protein, Acyl carrier protein synthase, Alleles, Biosynthesis, Camellia, Camellia - genetics, Camellia - metabolism, Chromosomes, Cultivars, Domestication, Edible oils, Evolution, Fatty acids, Gene expression, Genome, Genome, Plant, Genome-wide association analysis, Genome-wide association studies, Genome-Wide Association Study, Genomes, Genomics, Heterozygosity, Humans, Hybrids, Metagenomics, Oil biosynthesis, Oil-Camellia, Oilseeds, Plant Oils - metabolism, Pollination, Population, Population genomics, Proteins, Seeds, Sibling species, Transcriptomes, Triacylglycerol lipase