AI Article Synopsis
- The Banana bunchy top virus (BBTV) genome is made up of six single-stranded DNA segments, each about 1 kb long.
- Both Haikou-2 and Haikou-4 isolates were sequenced, with Haikou-2 having an additional satellite DNA.
- Phylogenetic analysis grouped BBTV into two main groups based on geographical distribution: the Southeast Asian and Pacific-Indian Oceans groups, with both Haikou isolates falling under the Southeast Asian group.
Article Abstract
The genome of Banana bunchy top virus (BBTV) consists of six segments of single-stranded DNA of approximately 1 kb in length. We identified and sequenced the complete genomes of two BBTV isolates, one with and one without satellite DNA, from Haikou, Hainan, China. The Haikou-2 isolate contains six genomic segments and an additional satellite DNA while the Haikou-4 isolate contains only six genomic segments. Typical of other babuviruses, each genomic segment encodes a single open reading frame and contains the highly conserved stem-loop and major common regions. Phylogenetic analysis of the two Haikou isolates together with existing sequence records in GenBank confirmed the grouping of BBTV into two large groups and further refined the geographical distribution of each group. To accommodate the changes in the BBTV geographical distribution, the two groups are proposed as the Southeast Asian group and the Pacific-Indian Oceans group. Both the Haikou-2 and Haikou-4 isolates belong to the newly proposed Southeast Asian group.
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| http://dx.doi.org/10.1007/s11262-012-0718-9 | DOI Listing |
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