Molecular Assessment of Genetic Stability Using CDDP and DNA-barcoding Assays in Long-term Micropropagated Rose Plant

Roses are the world's best-known garden plants, established as ornamental plants cultivated for their blooms. Taif rose (Rosa damascena trigintipetala) refers to the Damascus Rose species and is regarded one of Taif Governorate's most significant financial goods, which produces an extremely fragrant commercially precious essential oil. The objective of current study was to assess the genetic stability of micropropagated Taif rose and to assess the usefulness of Conserved DNA Derived Polymorphism (CDDP) and DNA-barcoding genes such as; rpoC1 (chloroplast gene RNA polymerase1) in the detection of somaclonal variation.

Ten combinations of CDDP PCR primers were employed and the rpoC1 gene region was sequenced for mother plant (control) and micropropagated plantlets of Taif rose plant.

Based on CDDP data, phylogenetic divergence indicated that the distinct specimens of Taif rose micro-propagated plantlets and control were genetically differentiated by a difference of 1% of genetic dissimilarity. Phylogenetic tree which developed using rpoC1 DNA showed that rpoC1 DNA sequencing discovered a genetic difference between the control and micro-propagated plantlets of Taif rose.

Furthermore, CDDP and DNA barcoding using rpoC1 gene have demonstrated their usefulness in investigating the genetic history of Rosa species and their ability to explore genetic mutation.