A bidirectional promoter from Papaya leaf crumple virus functions in both monocot and dicot plants

The intergenic region of Papaya leaf crumple virus (PaLCrV) transcribes the complementary (C) and virion (V) strand promoters, expressing the C1-C4 and V1-V2 genes respectively in opposite directions. Activities of the bidirectional promoter of PaLCrV in the C and V directions were compared with the 35S promoter of Cauliflower mosaic virus (CaMV35S), using β-glucuronidase (uidA) as the reporter gene. The resulting promoter constructs were named...