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Nat Commun. 2014 Oct 28;5:5315. doi: 10.1038/ncomms6315.

The complex jujube genome provides insights into fruit tree biology.

Author information

1
1] Research Center of Chinese Jujube, Agricultural University of Hebei, 071001 Baoding, China [2] National Engineering Research Center for Agriculture in North Mountain Area (Ministry of Science and Technology of the People's Republic of China), 071000 Baoding, China [3] Jujube Working Group, International Society for Horticultural Science, Agricultural University of Hebei, 071001 Baoding, China.
2
College of Life Science, Agricultural University of Hebei, 071000 Baoding, China.
3
BGI-Shenzhen, 518083 Shenzhen, China.
4
College of Forestry, Agricultural University of Hebei, 071000 Baoding, China.
5
1] Research Center of Chinese Jujube, Agricultural University of Hebei, 071001 Baoding, China [2] Jujube Working Group, International Society for Horticultural Science, Agricultural University of Hebei, 071001 Baoding, China.
6
Research Center of Chinese Jujube, Agricultural University of Hebei, 071001 Baoding, China.
7
School of Plant Biology, Faculty of Science and The UWA Institute of Agriculture, The University of Western Australia, Perth, Western Australia 6009, Australia.
8
National Engineering Research Center for Agriculture in North Mountain Area (Ministry of Science and Technology of the People's Republic of China), 071000 Baoding, China.

Abstract

The jujube (Ziziphus jujuba Mill.), a member of family Rhamnaceae, is a major dry fruit and a traditional herbal medicine for more than one billion people. Here we present a high-quality sequence for the complex jujube genome, the first genome sequence of Rhamnaceae, using an integrated strategy. The final assembly spans 437.65 Mb (98.6% of the estimated) with 321.45 Mb anchored to the 12 pseudo-chromosomes and contains 32,808 genes. The jujube genome has undergone frequent inter-chromosome fusions and segmental duplications, but no recent whole-genome duplication. Further analyses of the jujube-specific genes and transcriptome data from 15 tissues reveal the molecular mechanisms underlying some specific properties of the jujube. Its high vitamin C content can be attributed to a unique high level expression of genes involved in both biosynthesis and regeneration. Our study provides insights into jujube-specific biology and valuable genomic resources for the improvement of Rhamnaceae plants and other fruit trees.

PMID:
25350882
PMCID:
PMC4220462
DOI:
10.1038/ncomms6315
[Indexed for MEDLINE]
Free PMC Article

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