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Genome sequence of the date palm Phoenix dactylifera L

2013; Nature Portfolio; Volume: 4; Issue: 1 Linguagem: Inglês

10.1038/ncomms3274

2041-1723

Ibrahim Al‐Mssallem, Songnian Hu, Xiaowei Zhang, Qiang Lin, Wanfei Liu, Jun Tan, Xiaoguang Yu, Jiucheng Liu, Linlin Pan, Tongwu Zhang, Yuxin Yin, Chengqi Xin, Hao Wu, Guangyu Zhang, Mohammed M. Ba Abdullah, Da‐Wei Huang, Yongjun Fang, Yasser Obaidallah Alnakhli, Shangang Jia, An Yin, Eman Alhuzimi, Burair Alsaihati, Saad Alowayyed, Duojun Zhao, Sun Zhang, Noha Al-Otaibi, Gaoyuan Sun, Majed A. Majrashi, Fusen Li, Tala, Jixiang Wang, Quanzheng Yun, Nafla A. Alnassar, Lei Wang, Meng Yang, Rasha Aljelaify, Kan Liu, Shenghan Gao, Kaifu Chen, Samiyah Al‐Khaldi, Guiming Liu, Meng Zhang, Haiyan Guo, Jun Yu,

Chromosomal and Genetic Variations

Date palm (Phoenix dactylifera L.) is a cultivated woody plant species with agricultural and economic importance. Here we report a genome assembly for an elite variety (Khalas), which is 605.4 Mb in size and covers >90% of the genome (~671 Mb) and >96% of its genes (~41,660 genes). Genomic sequence analysis demonstrates that P. dactylifera experienced a clear genome-wide duplication after either ancient whole genome duplications or massive segmental duplications. Genetic diversity analysis indicates that its stress resistance and sugar metabolism-related genes tend to be enriched in the chromosomal regions where the density of single-nucleotide polymorphisms is relatively low. Using transcriptomic data, we also illustrate the date palm's unique sugar metabolism that underlies fruit development and ripening. Our large-scale genomic and transcriptomic data pave the way for further genomic studies not only on P. dactylifera but also other Arecaceae plants. The date palm is one of the most economically important plants of the palm family. Here, the authors present a high-quality genome assembly of the date palm Phoenix dactylifera, and reveal insights into the unique sugar metabolism underlying fruit ripening.