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The genus  Physalis  includes a number of commercially important edible and ornamental species. Its high nutritional value and potential medicinal properties leads to the increased commercial interest in the products of this genus worldwide. However, lack of molecular markers prevents the detailed study of genetics and phylogeny in  Physalis , which limits the progress of breeding. In the present study, we compared the DNA sequences between  Physalis  and tomato, and attempted to analyze genetic diversity in  Physalis  using tomato markers. Blasting 23180 DNA sequences derived from  Physalis  against the International Tomato Annotation Group (ITAG) Release2.3 Predicted CDS (SL2.40) discovered 3356 single-copy orthologous genes between them. A total of 38 accessions from at least six species of  Physalis  were subjected to genetic diversity analysis using 97 tomato markers and 25 SSR markers derived from  P. peruviana . Majority (73.2%) of tomato markers could amplify DNA fragments from at least one accession of  Physalis . Diversity in  Physalis  at molecular level was also detected. The average Nei’s genetic distance between accessions was 0.3806 with a range of 0.2865 to 0.7091. These results indicated  Physalis  and tomato had similarity at both molecular marker and DNA sequence levels. Therefore, the molecular markers developed in tomato can be used in genetic study in  Physalis .

plos one

Identification of Single-Copy Orthologous Genes between Physalis and Solanum lycopersicum and Analysis of Genetic Diversity in Physalis Using Molecular Markers