Abstract
A simple, economical and efficient method for isolation of Cowpea chlorotic mottle virus (CCMV) particles was developed. Abundant viral particles could be obtained with three steps of 10 min duration each of conventional differential centrifugations and one sucrose cushion ultracentrifugation step of 2 h. Characterization of purified virus assessed by transmission electron microscopy, polyacrylamide gel electrophoresis (PAGE) and Western blot revealed the typical isometric particles of CCMV without any visible contamination or degradation. RNA extracted from purified CCMV particles showed all four RNA components by agarose gel electrophoresis. Both purified virus particles and RNA were biologically active and initiated successful infection upon inoculation to cowpea.
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