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Published on: June 2, 2021
Development of microsatellite markers for the clonal shrub Orixa japonica (Rutaceae) using 454 sequencing
Ichiro Tamaki1, Suzuki Setsuko2, Kyoko Sugai3
1Gifu Academy of Forest Science and Culture, 88 Sodai, Mino, Gifu 501-3714, Japan.
Premise Of The Study:
Microsatellite markers were developed for a dioecious shrub, Orixa japonica (Rutaceae). Because O. japonica vigorously propagates by vegetative growth, microsatellite markers can be used to identify clonal relationships among its ramets.
Methods And Results:
Sixteen polymorphic microsatellite markers were identified by 454 next-generation sequencing. The number of alleles and expected heterozygosity for each locus among four populations ranged from two to 10 and from 0.140 to 0.875, respectively. Five of the 16 loci showed a low null allele frequency. Because Orixa is a monotypic genus, cross-amplification in a consubfamilial species, Skimmia japonica, was tested, and only one locus showed polymorphism.
Conclusions:
These microsatellite markers developed for O. japonica contribute to clone identification for studies examining the clonal structure and true sex ratio in the wild. Moreover, five markers that have a low null allele frequency can also be used for estimating mating systems or performing parentage analysis.
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