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Article Dans Une Revue Nature Genetics Année : 2013

The draft genome of watermelon (Citrullus lanatus) and resequencing of 20 diverse accessions

William J. Lucas
  • Fonction : Auteur
Shan Gao
Tao Tan
  • Fonction : Auteur
Erli Pang
  • Fonction : Auteur
Kui Lin
  • Fonction : Auteur
Qun Hu
  • Fonction : Auteur
Bo Wang
Juan Wang
  • Fonction : Auteur
  • PersonId : 946314
Ye Yin
  • Fonction : Auteur
  • PersonId : 969492
Mingzhu Wu
  • Fonction : Auteur
Amnon Levi
  • Fonction : Auteur

Résumé

Watermelon, Citrullus lanatus, is an important cucurbit crop grown throughout the world. Here we report a high-quality draft genome sequence of the east Asia watermelon cultivar 97103 (2n = 2x = 22) containing 23,440 predicted protein-coding genes. Comparative genomics analysis provided an evolutionary scenario for the origin of the 11 watermelon chromosomes derived from a 7-chromosome paleohexaploid eudicot ancestor. Resequencing of 20 watermelon accessions representing three different C. lanatus subspecies produced numerous haplotypes and identified the extent of genetic diversity and population structure of watermelon germplasm. Genomic regions that were preferentially selected during domestication were identified. Many disease-resistance genes were also found to be lost during domestication. In addition, integrative genomic and transcriptomic analyses yielded important insights into aspects of phloem-based vascular signaling in common between watermelon and cucumber and identified genes crucial to valuable fruit-quality traits, including sugar accumulation and citrulline metabolism.

Dates et versions

hal-01190670 , version 1 (01-09-2015)

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Citer

Shaogui Guo, Jianguo Zhang, Honghe Sun, Jerome Salse, William J. Lucas, et al.. The draft genome of watermelon (Citrullus lanatus) and resequencing of 20 diverse accessions. Nature Genetics, 2013, 45 (1), pp.51 - U82. ⟨10.1038/ng.2470⟩. ⟨hal-01190670⟩
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