Recent advances in research on the molecular markers, genetic map and QTL mapping for fatty acid content in African oil palm (Elaeis guineensis Jacq.)

Abstract

The oil palm (Elaeis guineensis) is a crucial source of global vegetable oil, and understanding the genetic basis of its fatty acid composition is essential for improving oil quality and yield. Recent advances in molecular marker development, genetic mapping, and quantitative trait loci (QTL) mapping have significantly enhanced our understanding of the genetic architecture underlying fatty acid biosynthesis in oil palm. This review consolidates recent findings in these areas, highlighting the integration of genomic technologies, such as marker-assisted selection and association mapping, which have facilitated the identification of key genes and regulatory networks involved in fatty acid metabolism. Molecular markers, including single-nucleotide polymorphisms (SNPs) and simple sequence repeats (SSRs), have been employed to construct high-resolution genetic maps. These maps serve as a foundation for QTL identification, linking phenotypic variations in fatty acid profiles to specific genomic regions. Advances in bioinformatics tools have further refined the analysis of large datasets, enabling the identification of candidate genes associated with desirable traits. Moreover, the review discusses the implications of these advancements for breeding programs aimed at enhancing oil palm varieties with optimized fatty acid compositions. By integrating traditional breeding approaches with modern genomic tools, researchers are poised to accelerate the development of oil palm cultivars that meet the growing demands for high-quality oil while addressing sustainability concerns. In conclusion, the convergence of molecular markers, genetic mapping, and QTL analysis represents a transformative step in oil palm research, paving the way for improved fatty acid profiles and increased oil yield. Future directions emphasize the need for continued exploration of gene functions, interactions, and the environmental influences on fatty acid synthesis, which will be crucial for the sustainable advancement of the oil palm industry.