ArticleFrontiers in plant science2026
Genomic insights into population structure and conservation of wild olive (
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Not yet cited in PubMed.
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Corrections and comments
- Erratum issued
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4 authors.
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Abstract
Background: Wild olive ( Results: A dual-genomic approach was employed, utilizing nuclear SNPs derived from Angiosperms353 target enrichment and plastid SNPs (cpSNPs) recovered from off-target reads. These markers were used to assess the genetic diversity and population structure of 48 wild olive accessions from the Dhofar, Eastern Hajar, and Western Hajar mountains of Oman. STRUCTURE, PCA, and DAPC analyses consistently revealed a clear north-south genetic split, with Dhofar populations forming a distinct and genetically isolated lineage, while populations from the Eastern and Western Hajar Mountains showed evidence of admixture and genetic connectivity. Five plastid haplotypes were identified, further supporting this phylogeographic structure. Analysis of molecular variance (AMOVA) indicated that most genetic variation occurred within populations (71.86%) rather than among populations (28.14%; ΦST = 0.2814), while regional divergence between northern and southern populations was higher (ΦRT = 0.528). The overall fixation index (F Conclusions: These findings highlight the genetic uniqueness and isolation of Dhofar populations, which should be considered a conservation priority. The results provide essential guidance for
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