Isolation and characterization of 16 polymorphic microsatellite loci for Frangula alnus (Rhamnaceae)

Area of Science:

• Plant genetics
• Molecular ecology
• Conservation biology

Background:

• Frangula alnus (Rhamnaceae) is a widespread shrub with three subspecies.
• Understanding genetic diversity and gene flow is crucial for conservation efforts.
• No polymorphic nuclear microsatellite markers were previously available for Frangula alnus.

Purpose of the Study:

• To develop and characterize the first set of polymorphic nuclear microsatellite markers for Frangula alnus.
• To assess the utility of these markers across different subspecies and populations.
• To evaluate their applicability in parentage analysis and seed dispersal studies.

Main Methods:

• Development of 16 nuclear microsatellite markers using standard molecular techniques.
• Genotyping of 72 individuals from three Frangula alnus subspecies and local populations.
• Analysis of genetic variation, including allele numbers and heterozygosity, in leaf and seed endocarp samples.

Main Results:

• Successfully developed 16 polymorphic nuclear microsatellite markers for Frangula alnus.
• A total of 87 alleles were detected across 72 individuals, with a mean of 5.44 alleles per locus.
• Observed and expected heterozygosities ranged from 0.097 to 0.792 and 0.093 to 0.794, respectively, indicating high polymorphism.

Conclusions:

• The developed microsatellite markers are highly polymorphic and informative for Frangula alnus.
• These markers are suitable for parentage analyses and for studying seed dispersal by comparing endocarp and adult genotypes.
• This provides essential tools for future ecological and conservation research on Frangula alnus.