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Article Dans Une Revue Proceedings of the National Academy of Sciences of the United States of America Année : 2014

Whole-genome sequencing of cultivated and wild peppers provides insights into Capsicum domestication and specialization

Yaou Shen
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Lang Chen
Jiumeng Min
  • Fonction : co premier-auteur
Haiyang Wu
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  • PersonId : 1048707
Xin Tang
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Zhe Chen
Shu Tan
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Dan Liu
Li Zhang
Yan Zhang
Kailin Hu
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  • PersonId : 1071323

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Zhiming Zhang
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Résumé

As an economic crop, pepper satisfies people's spicy taste and has medicinal uses worldwide. To gain a better understanding of Capsicum evolution, domestication, and specialization, we present here the genome sequence of the cultivated pepper Zunla-1 (C. annuum L.) and its wild progenitor Chiltepin (C. annuum var. glabriusculum). We estimate that the pepper genome expanded similar to 0.3 Mya (with respect to the genome of other Solanaceae) by a rapid amplification of retrotransposons elements, resulting in a genome comprised of similar to 81% repetitive sequences. Approximately 79% of 3.48-Gb scaffolds containing 34,476 protein-coding genes were anchored to chromosomes by a high-density genetic map. Comparison of cultivated and wild pepper genomes with 20 resequencing accessions revealed molecular footprints of artificial selection, providing us with a list of candidate domestication genes. We also found that dosage compensation effect of tandem duplication genes probably contributed to the pungent diversification in pepper. The Capsicum reference genome provides crucial information for the study of not only the evolution of the pepper genome but also, the Solanaceae family, and it will facilitate the establishment of more effective pepper breeding programs.

Dates et versions

hal-02640860 , version 1 (28-05-2020)

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Citer

Cheng Qin, Changshui Yu, Yaou Shen, Xiaodong Fang, Lang Chen, et al.. Whole-genome sequencing of cultivated and wild peppers provides insights into Capsicum domestication and specialization. Proceedings of the National Academy of Sciences of the United States of America, 2014, 111 (14), pp.5135-5140. ⟨10.1073/pnas.1400975111⟩. ⟨hal-02640860⟩
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