ArticleDNA research : an international journal for rapid publication of reports on genes and genomes2025
Whole-genome sequencing of wild and ancestral Dura provides insight into the untapped genomic information of undomesticated oil palm (Elaeis guineensis Jacq.).
Article in DNA research : an international journal for rapid publication of reports on genes and genomes, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Oil palm (Elaeis guineensis Jacq.) is a globally important crop, and its genetic improvements benefit from comprehensive genome sequencing. Here, we report the whole-genome sequencing and annotation of two key genetic resources: the wild (Eg-DCM) and ancestral (Eg-DBG) Dura accessions, using a combination of short- and long-read sequencing technologies. De novo assembly followed by polishing, proximity ligation, and reference-guided scaffolding yielded high-quality assemblies with ungapped lengths of 1.71 Gb (Eg-DBG) and 1.48 Gb (Eg-DCM). Eg-DCM and Eg-DBG genomes exhibited high completeness, with over 97% of Benchmarking Universal Single-Copy Orthologs (BUSCOs) recovered across the Eukaryota, Viridiplantae, and Embryophyta datasets. Repetitive elements, particularly retrotransposons, dominated both genomes, accounting for 46.10% of Eg-DBG and 43.85% of Eg-DCM. Gene prediction initially identified 61,256 (Eg-DBG) and 53,985 (Eg-DCM) genes, which were refined into high-confidence gene sets of 39,263 and 35,298, respectively. Additionally, 1,760 and 1,684 putative resistance (R) genes were identified in Eg-DCM and Eg-DBG, with similar class distributions. The five major R gene classes comprise KIN, RLK, RLP, CNL, and CK. With further research, the assembled whole-genome sequences and the annotated genes of Eg-DBG and Eg-DCM offer valuable insights into the untapped genomic information of undomesticated accessions, with implications for future breeding and crop improvement efforts of oil palm.
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