Navigation Links
The genome of sesame sheds new lights on oil biosynthesis

Shenzhen, February 27, 2014 - Researchers from Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, BGI, University of Copenhagen and other institutes have successfully cracked the genome of high oil content crop sesame, providing new lights on the important stages of seed development and oil accumulation, and potential key genes for sesamin production. The joint efforts made sesame become the second Lamiales to be sequenced along with the former published minute genome of Utricularia gibba. The latest study was published online in Genome Biology.

Sesame, Sesamum indicum L., is considered as the queen of oilseeds for its high oil content and quality. It is grown widely in tropical and subtropical areas as an important source of oil and protein. Compared to other eatable oil crops such as soybean, rapeseed, peanut and olive, sesame has innate superiority for its high oil content (~55% of dry seed), and thus is an attractive model for studying lipid biosynthesis. However, currently only limited genomic data of sesame is available.

In this study, researchers presented a high-quality draft genome of the sesame genotype 'Zhongzhi No. 13', an elite cultivar in China been planted over the past ten years. After data process, the assembled sesame genome size is about 337 Mb, with a total of 27,148 genes. The result highlighted the absence of the Toll/interleukin-1 receptor domain in resistance genes, and suggested that this may be a new paradigm in elucidating the interaction of resistance genes along with diseases.

To explore the molecular mechanism of lipid biosynthesis, researchers conducted comparative genomic and transcriptomic analyses and found an expansion on type 1 lipid transfer genes by tandem duplication, a contraction on lipid degradation genes, and the differential expression of essential genes in the triacylglycerol biosynthesis pathway, particularly in the early stage of seed development. Researchers further resequenced 29 sesame accessions from 12 countries to investigate the genetic diversity of lipid-related genes.

Sesamin is an oil-soluble furofuran lignan typically present in sesame seed. Numerous studies on rats and mice have suggested various health benefits of sesamin. This compound is known to promote normalize blood pressure, lower cholesterol, protect the liver, and contribute to weight loss. Sesamin biosynthesis involves two key genes encoding dirigent protein (DIR) and piperitol/sesamin synthase (PSS), respectively. In this study, researchers found that DIR homologues were present in sesame and tomato, but the PSSs are only detected in sesame, indicating the genetic foundation for the sesame-specific product.


Contact: Jia Liu
BGI Shenzhen

Related biology news :

1. Leading evolutionary scientist to discuss how genome of bacteria has evolved
2. Darwin in the genome
3. Analysis of stickleback genome sequence catches evolution in action
4. Athletic frogs have faster-changing genomes
5. PNAS: Precise molecular surgery in the plant genome
6. BGI and Aspera collaborate on high-speed data exchange to advance genome research
7. Researchers announce GenomeSpace environment to connect genomic tools
8. UC Santa Cruz builds national data center for cancer genome research
9. BGI reports the completed sequence of foxtail millet genome
10. Relative reference: Foxtail millet offers clues for assembling the switchgrass genome
11. Maps of Miscanthus genome offer insight into grass evolution
Post Your Comments:
(Date:6/9/2016)... in attendance control systems is proud to announce the introduction of fingerprint attendance control ... right employees are actually signing in, and to even control the opening of doors. ... ... ... Photo - ...
(Date:6/2/2016)... NEW YORK , June 2, 2016   The ... (Weather), is announcing Watson Ads, an industry-first capability in which ... advertising, by being able to ask questions via voice or ... Marketers have long ... with the consumer, that can be personal, relevant and valuable; ...
(Date:5/16/2016)... YORK , May 16, 2016   EyeLock ... solutions, today announced the opening of an IoT Center ... to strengthen and expand the development of embedded iris ... an unprecedented level of convenience and security with unmatched ... authenticate one,s identity aside from DNA. EyeLock,s platform uses ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... Apellis Pharmaceuticals, Inc. today announced positive ... its complement C3 inhibitor, APL-2. The trials were ... studies designed to assess the safety, tolerability, pharmacokinetics ... healthy adult volunteers. Forty subjects were ... dose (ranging from 45 to 1,440mg) or repeated ...
(Date:6/23/2016)... , June 23, 2016 On ... session at 4,833.32, down 0.22%; the Dow Jones Industrial Average ... 500 closed at 2,085.45, down 0.17%. has initiated coverage ... INFI ), Nektar Therapeutics (NASDAQ: NKTR ), Aralez ... Inc. (NASDAQ: BIND ). Learn more about these ...
(Date:6/23/2016)... Connecticut (PRWEB) , ... June 23, 2016 , ... ... introduce a new line of intelligent tools designed, tuned and optimized exclusively for ... September 12–17 in Chicago. The result of a collaboration among several companies with ...
(Date:6/22/2016)... 22, 2016 Cell Applications, Inc. and ... to produce up to one billion human induced ... one week. These high-quality, consistent stem cells enable ... and spend more time doing meaningful, relevant research. ... high-volume manufacturing process that produces affordable, reliable HiPSC ...
Breaking Biology Technology: