Pan-Genome Analysis Reveals Local Adaptation to Climate Driven by Introgression in Oak Species.

ABSTRACT: The genetic base of local adaptation has been extensively studied in natural populations. However, a comprehensive genome-wide perspective on the contribution of structural variants (SVs) and adaptive introgression to local adaptation remains limited. In this study, we performed de novo assembly and annotation of 22 representative accessions of Quercus variabilis, identifying a total of 543,372 SVs. These SVs play crucial roles in shaping genomic structure and influencing gene expression. By analyzing range-wide genomic data, we identified both SNPs and SVs associated with local adaptation in Q. variabilis and Quercus acutissima. Notably, SV-outliers exhibit selection signals that did not overlap with SNP-outliers, indicating that SNP-based analyses may not detect the same candidate genes

SUBMITTER: Liang YY 

PROVIDER: S-EPMC12042805 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature