The quantity of genomic DNA-A and DNA-B of African cassava mosaic virus and East African cassava mosaic virus Uganda was analysed by quantitative PCR to assess virus concentrations in susceptible and tolerant cassava cultivars in infections.
The concentrations of genome components in absolute and relative quantification experiments in single and mixed viral infections were determined.
The quantitative assessment showed that the distribution of both viruses in the moderately resistant cassava cv. TMS 30572 was not different from the highly susceptible cv. TME 117.
Natural mixed infections with both viruses presented severe disease symptoms and differential amounts of genome components.
The higher concentrations of EACMV-UG DNA-B compared to EACMV DNA-A accumulation in single infections were consistent and irrespective of cassava cultivar and its tolerance status.