Cacao swollen shoot disease has been known to be caused by a small non-enveloped bacilliform virus for more than 25 years. Purification using a combination of celite filtration, polyethylene glycol concentration and sucrose density gradient centrifugation has yielded concentrated preparations of purified cacao swollen shoot virus (CSSV). Results of nuclease sensitivity tests indicated that the CSSV genome consists of dsDNA which has two single-stranded regions. The approximate size of CSSV DNA calculated from restriction enzyme digests is 7.4 kbp. It is very likely that CSSV is a member of the commelina yellow mottle virus group.


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