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The Tannat genome: Unravelling its unique characteristics
- Source :
- BIO Web of Conferences, Vol 12, p 01016 (2019)
- Publication Year :
- 2019
- Publisher :
- EDP Sciences, 2019.
-
Abstract
- Tannat (Vitis vinifera) is the most cultivated grapevine variety in Uruguay for the production of high quality red wines. Its berries have unusually high levels of polyphenolic compounds (anthocyanins and tannins), producing wines with intense purple colour and high antioxidant properties. Remarkably, more than 40% of its tannins are galloylated, which determines a greater antioxidant power. Technologies of massive sequencing allow the characterization of genomic variants between different clutivars. The Tannat genome was sequenced with a 134X coverage using the Illumina technology, and was annotated using transcriptomes (RNA-Seq) of different berry tissues. When comparing the genomes of Tannat with Pinot Noir PN40024 (reference genome) we found an expansion of the gene families related to the biosynthesis of polyphenols. A search base on the recently reported epicatechin galloyl transferase (ECGT) from tea leaves determined five putative genes encoding the ECGT in Tannat. Genetic analysis of one of the transcription factor that regulates the anthocyanin synthesis during berry ripening, VvMYBA1, shows the presence of Gret1 retrotransposon in one of the VvMYBA1 alleles in the Tannat clones analysed. This work makes original contributions about the molecular bases of the biosynthesis of anthocyanins and tannins during the development of the flagship grape of Uruguay.
- Subjects :
- 0303 health sciences
Environmental Engineering
lcsh:QP1-981
010405 organic chemistry
lcsh:QR1-502
food and beverages
Retrotransposon
Berry
Biology
01 natural sciences
Genome
Genetic analysis
Industrial and Manufacturing Engineering
lcsh:Microbiology
lcsh:Physiology
0104 chemical sciences
03 medical and health sciences
Polyphenol
Botany
lcsh:Zoology
Gene family
lcsh:QL1-991
Gene
030304 developmental biology
Reference genome
Subjects
Details
- Language :
- English
- ISSN :
- 21174458
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- BIO Web of Conferences
- Accession number :
- edsair.doi.dedup.....c0c57ca2400b3d81c7d3cd1616099a17