Variability in P1 gene redefines phylogenetic relationships among cassava brown streak viruses.

ABSTRACT:

Background

Cassava brown streak disease is emerging as the most important viral disease of cassava in Africa, and is consequently a threat to food security. Two distinct species of the genus Ipomovirus (family Potyviridae) cause the disease: Cassava brown streak virus (CBSV) and Ugandan cassava brown streak virus (UCBSV). To understand the evolutionary relationships among the viruses, 64 nucleotide sequences from the variable P1 gene from major cassava producing areas of east and central-southern Africa were determined.

Methods

We sequenced an amplicon of the P1 region of 31 isolates from Malawi and Tanzania. In addition to these, 33 previously reported sequences of virus isolates from Uganda, Kenya, Tanzania, Malawi and Mozambique were added to the analysis.

Results

SUBMITTER: Mbewe W 

PROVIDER: S-EPMC5480109 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature