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Updated: Feb 15, 2026

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Recombination suppression in plant adaptation and speciation.

Xu Zhang1,2, Yisi Hu2,3, Kaichi Huang4

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Recombination suppression aids plant speciation by linking adaptive genes and limiting gene flow. Understanding its genomic mechanisms, like transposable elements, is key to plant evolution research.

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Area of Science:

  • Evolutionary Biology
  • Genomics
  • Plant Science

Background:

  • Recombination suppression is crucial for genomic divergence and speciation, particularly with ongoing gene flow.
  • Mechanisms and evolutionary impacts of recombination suppression in plants are not fully understood due to genome complexity.

Purpose of the Study:

  • Synthesize current knowledge on recombination suppression's role in plant adaptation and speciation.
  • Examine the genomic contexts and mechanisms driving recombination suppression in plants.

Main Methods:

  • Leveraging advances in long-read sequencing and haplotype-resolved assemblies.
  • Mapping recombination landscapes across diverse plant systems.

Main Results:

  • Recombination suppression links adaptive alleles, restricts gene flow, and promotes genomic divergence.
  • It facilitates sex chromosome evolution and originates from structural variants, transposable elements, and epigenetic modifications.

Conclusions:

  • Recombination suppression plays multifaceted roles in plant adaptation and speciation.
  • A conceptual framework integrating genomic, ecological, and evolutionary scales is provided.
  • Key open questions for future research are highlighted.