First report of Cassava brown streak viruses on wild plant species in Mozambique.

Cassava brown streak disease (CBSD) caused by (CBSV) and (UCBSV) is the main constraint to cassava ( Crantz) production in Mozambique. Using RT-PCR to amplify partial coat protein nucleotide sequences, we detected for the first time the occurrence of CBSV in two non-cassava perennial wild plant species: () Exell. and (Burm.