Abstract
Round spot is a destructive disease that limits of Panax notoginseng production in China. However, the genetic diversity of its etiological agent Mycocentrospora acerina has yet to be studied. In this work, firstly, we developed 32 M. acerina polymorphic microsatellite markers using MISA and CERVUS 3.0 and selected 14 for further analysis. Then, we studied the genetic diversity of 187 isolates collected from P. notoginseng round spot using simple sequence repeat markers and polyacrylamide gel electrophoresis. The genetic diversity ranged from 0.813 to 0.946, with 264 alleles detected at the 14 microsatellite loci. The expected average heterozygosity was 0.897.
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