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February 25, 2026Nature Communications0 citationsOpen Access

Sub-pangenome analysis reveals structural variants associated with fruit color and bacterial wilt resistance in eggplant

QYQian YouZPZe PengZLZhiliang Li

Key Points

  • This research aims to characterize genomic variants associated with important traits in eggplant, including fruit color and resistance to bacterial wilt.
  • Conducted population genomic analyses of 226 eggplant accessions from Southeast Asia and South China.
  • Generated chromosome-scale assemblies for 11 accessions using long-read sequencing.
  • Integrated six published genomes to create a comprehensive pangenome resource.
  • Performed association scans to identify significant genomic variants related to phenotypic traits.
  • Identified a 12.4 Mb inversion on chromosome 10 associated with fruit color variation at 50.44% frequency.
  • Detected genetic variants linked to bacterial wilt resistance, including a premature stop codon in SmCYP82D47.
  • Found copy number variations in SmEPS1 and SmRoq1 homologs related to resistance traits.

Abstract

Abstract Eggplant ( Solanum melongena L.) is a globally important Solanaceae crop, yet trait-relevant genomic variants remain poorly characterized. Here, we perform population genomic analyses of 226 eggplant accessions sampled mainly from a major domestication center spanning Southeast Asia and South China, and find that genetic relationships closely track geographic origin. We generate chromosome-scale assemblies for 11 representative accessions using long-read sequencing and integrate six published genomes to build a pangenome resource. Using this resource, association scans identify a 12.4 Mb inversion on chromosome 10 segregating at 50.44% frequency that is strongly associated with fruit color, likely through hitchhiking with SmMYB1 . We also detect variants associated with bacterial wilt resistance, including a premature stop codon in SmCYP82D47 and copy number variations in SmEPS1 and SmRoq1 homologs. Together, our results illuminate the evolution and phenotypic impact of large structural variants and provide genomic resources for eggplant genetics and breeding.

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Cite This Study

You et al. (2026) studied this question.

synapsesocial.com/papers/699e918df5123be5ed04f27ehttps://doi.org/10.1038/s41467-026-69764-8
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