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Genomic evidence for homoploid hybrid speciation between ancestors of two different genera

Author

Listed:
  • Zefu Wang

    (Sichuan University)

  • Minghui Kang

    (Sichuan University)

  • Jialiang Li

    (Sichuan University)

  • Zhiyang Zhang

    (Sichuan University)

  • Yufei Wang

    (Sichuan University)

  • Chunlin Chen

    (Sichuan University)

  • Yongzhi Yang

    (Lanzhou University)

  • Jianquan Liu

    (Sichuan University
    Lanzhou University)

Abstract

Homoploid hybrid speciation (HHS) has been increasingly recognized as occurring widely during species diversification of both plants and animals. However, previous studies on HHS have mostly focused on closely-related species while it has been rarely reported or tested between ancestors of different genera. Here, we explore the likely HHS origin of Carpinus sect. Distegocarpus between sect. Carpinus and Ostrya in the family Betulaceae. We generate a chromosome-level reference genome for C. viminea of sect. Carpinus and re-sequence genomes of 44 individuals from the genera Carpinus and Ostrya. Our integrated analyses of all genomic data suggest that sect. Distegocarpus, which has three species, likely originates through HHS during the early divergence between Carpinus and Ostrya. Our study highlights the likelihood of an HHS event between ancestors of the extant genera during their initial divergences, which may have led to reticulate phylogenies at higher taxonomic levels.

Suggested Citation

  • Zefu Wang & Minghui Kang & Jialiang Li & Zhiyang Zhang & Yufei Wang & Chunlin Chen & Yongzhi Yang & Jianquan Liu, 2022. "Genomic evidence for homoploid hybrid speciation between ancestors of two different genera," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29643-4
    DOI: 10.1038/s41467-022-29643-4
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    References listed on IDEAS

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    1. Yongzhi Yang & Tao Ma & Zefu Wang & Zhiqiang Lu & Ying Li & Chengxin Fu & Xiaoyong Chen & Mingshui Zhao & Matthew S. Olson & Jianquan Liu, 2018. "Genomic effects of population collapse in a critically endangered ironwood tree Ostrya rehderiana," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
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