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Development and characterization of novel microsatellite markers in Trillium govanianum: a threatened plant species from North-Western Himalaya

Sharma, Vikas, Wani, Mohammad Saleem, Singh, Vijay, Kaur, Kuljit, Gupta, Raghbir Chand
3 Biotech 2017 v.7 no.3 pp. 190
Polygonatum, Trillium, alleles, genetic markers, genetic variation, heterozygosity, microsatellite repeats, plants (botany), provenance, temperate forests, threatened species, understory, Himalayan region
Trillium govanianum is a temperate forest understory plant species of high value belonging to the family Melanthiaceae. It is endemic to Himalayan region and facing a bottleneck situation due to reckless extractions from its natural strands. In the present study, 21 microsatellite markers were developed and characterized in 20 accessions of T. govanianum. Collectively, the polymorphic markers amplified 31 alleles in a range of 2–4 with an average of 2.6 alleles per marker. The mean observed heterozygosity (H ₒ), expected heterozygosity (H ₑ), and Shannon information index (I) were 0.46, 0.48, and 0.73, respectively. Average polymorphism information content (PIC) was 0.385. The cross-transferability in a related species, namely, Polygonatum verticillatum, showed amplification of ten markers. The newly developed microsatellite markers efficiently distinguished the different accessions on the basis of their geographic origin. Thus, these microsatellites can be useful in exploring genetic diversity in various existing populations of T. govanianum in north-western Himalaya, which may be useful for their conservation, management, and improvement in future.