Researchers analysed 60 accessions of kebericho gathered from 36 different geographical locations across Ethiopia. Using 1,925 DArTseq SNP markers, they quantified how much genetic variation exists within and among the surviving populations, information the authors say is essential for designing conservation, improvement and sustainable-use strategies for a species under severe pressure from overexploitation.
The markers themselves proved moderately informative. Gene diversity averaged 0.26 and the polymorphic information content was 0.22, indicating that the SNP panel captured a meaningful share of the variation present in the accessions.
Population-level statistics pointed to a moderate overall level of genetic diversity. The Shannon index was 0.43, observed heterozygosity was just 0.05, expected heterozygosity was 0.28, the fixation index reached 0.78, and 90.60 percent of loci were polymorphic.
Partitioning of variance showed that most of the variation lies within rather than between populations.
Clustering analyses produced broadly consistent but not identical pictures of structure. A neighbour-joining tree grouped the 60 accessions into six groups, while both DAPC and STRUCTURE analyses resolved four clusters.
Crucially, the population structure analysis indicated that the genetic grouping of kebericho accessions followed the source and geographical origin of collection. Accessions from the same parts of Ethiopia tended to cluster together genetically, meaning geography has left a clear imprint on the species’ genetic makeup.
The authors present the findings as a knowledge base for conservation planning. Because overexploitation is driving declines in important Ethiopian medicinal plant species, and because kebericho holds significant cultural value in traditional medicine across the country's nations, the authors present these findings as a knowledge base for conservation, improvement and sustainable utilisation of the species.
Subject of Research: Genetic diversity and population structure of the endangered Ethiopian medicinal plant Echinops kebericho using DArTseq SNP markers
Article Title: Genetic diversity and population structure of Ethiopian Echinops kebericho (Asteraceae) accessions through DArTseq SNP markers
Article References: Abdo, B. M., Zigene, Z. D., Mekonnen, S. A., Mengesha, W. A., Wachemo, H. L., & Asfaw, B. T. (2026). Genetic diversity and population structure of Ethiopian Echinops kebericho (Asteraceae) accessions through DArTseq SNP markers. Plant Biosystems, 160(6), Article 297. https://doi.org/10.1007/s44473-026-00277-4
Image Credits: AI Generated
DOI: 10.1007/s44473-026-00277-4
Keywords: Echinops kebericho, Ethiopia, genetic diversity, population structure, DArTseq, SNP markers, medicinal plants, conservation, critically endangered, Asteraceae, heterozygosity, DAPC
News Source: Juliet Wilcox. (October 28, 2026). Genetic study of endangered Ethiopian kebericho reveals moderate diversity shaped by geography. Scienmag.
