Journal article
Genome sequencing of the high oil crop sesame provides insight into oil biosynthesis
Genome Biology, Vol.15(2), Art. R39
2014
Abstract
Background
Sesame, Sesamum indicum L., is considered the queen of oilseeds for its high oil content and quality, and is grown widely in tropical and subtropical areas as an important source of oil and protein. However, the molecular biology of sesame is largely unexplored.
Results
Here, we report a high-quality genome sequence of sesame assembled de novo with a contig N50 of 52.2 kb and a scaffold N50 of 2.1 Mb, containing an estimated 27,148 genes. The results reveal novel, independent whole genome duplication and the absence of the Toll/interleukin-1 receptor domain in resistance genes. Candidate genes and oil biosynthetic pathways contributing to high oil content were discovered by comparative genomic and transcriptomic analyses. These revealed the expansion of type 1 lipid transfer genes by tandem duplication, the contraction of lipid degradation genes, and the differential expression of essential genes in the triacylglycerol biosynthesis pathway, particularly in the early stage of seed development. Resequencing data in 29 sesame accessions from 12 countries suggested that the high genetic diversity of lipid-related genes might be associated with the wide variation in oil content. Additionally, the results shed light on the pivotal stage of seed development, oil accumulation and potential key genes for sesamin production, an important pharmacological constituent of sesame.
Conclusions
As an important species from the order Lamiales and a high oil crop, the sesame genome will facilitate future research on the evolution of eudicots, as well as the study of lipid biosynthesis and potential genetic improvement of sesame.
Details
- Title
- Genome sequencing of the high oil crop sesame provides insight into oil biosynthesis
- Authors/Creators
- L. Wang (Author/Creator) - Oil Crops Research InstituteS. Yu (Author/Creator) - BGI Group (China)C. Tong (Author/Creator) - Oil Crops Research InstituteY. Zhao (Author/Creator) - Oil Crops Research InstituteY. Liu (Author/Creator) - Yanzhuang Oil Co., Ltd, Hefei, ChinaC. Song (Author/Creator) - BGI Group (China)Y. Zhang (Author/Creator) - Oil Crops Research InstituteX. Zhang (Author/Creator) - BGI Group (China)Y. Wang (Author/Creator) - BGI Group (China)W. Hua (Author/Creator) - Oil Crops Research InstituteD. Li (Author/Creator) - Oil Crops Research InstituteD. Li (Author/Creator) - Oil Crops Research InstituteF. Li (Author/Creator) - BGI Group (China)J. Yu (Author/Creator) - Oil Crops Research InstituteC. Xu (Author/Creator) - BGI Group (China)X. Han (Author/Creator) - BGI Group (China)S. Huang (Author/Creator) - Oil Crops Research InstituteS. Tai (Author/Creator) - BGI Group (China)J. Wang (Author/Creator) - BGI Group (China)X. Xu (Author/Creator) - BGI Group (China)Y. Li (Author/Creator) - BGI Group (China)S. Liu (Author/Creator) - Oil Crops Research InstituteR.K. Varshney (Author/Creator) - Centro Internacional de Mejoramiento de Maíz Y TrigoJ. Wang (Author/Creator) - BGI Group (China)X. Zhang (Author/Creator) - BGI Group (China)
- Publication Details
- Genome Biology, Vol.15(2), Art. R39
- Publisher
- BioMed Central
- Identifiers
- 991005541851907891
- Copyright
- © 2014 The Authors.
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites
Metrics
167 File views/ downloads
199 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.4 Crop Science
- 3.4.96 QTL
- Web Of Science research areas
- Biotechnology & Applied Microbiology
- Genetics & Heredity
- ESI research areas
- Molecular Biology & Genetics