engleski

Interplay between epigenetic and genetic variation in Dalmatian sage (Salvia officinalis L.)

To understand the role of epigenetic processes in plant adaptation, existing epigenetic variation of natural plant populations has been assessed and compared to genetic variation. Twenty-five Dalmatian sage (Salvia officinalis L.) populations, each consisting of 20 to 25 plants, were analysed using epigenetic Methylation-Sensitive Amplification Polymorphism markers (MSAP) and genetic AFLP markers. Epigenetic and genetic diversity was compared by analysing within-population diversities and pairwise genetic differentiation between populations. The importance of epigenetic processes in divergence and adaptation of Dalmatian sage was analysed by comparing the number of outlier epiloci/loci under divergent selection and by the assessment of the association between epiloci/loci and bioclimatic variables. The identification of FST outlier epiloci/loci was carried out using a Bayesian method while the spatial analysis was used to test the probability of presence of an epiallelic/allelic variant given the environmental conditions of the sampling locations.

Adaptation ; epigenetic diversity ; genetic diversity ; Salvia officinalis L.

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