Summary Filamentous particles of rice grassy stunt virus, a member of the rice stripe virus group, were found to be associated with an RN A-dependent RNA polymerase activity. The general properties of this RNA polymerase were similar to those of that associated with particles of rice stripe virus. A minor polypeptide (mol. wt. 230000), which may be the polymerase, was detected in virus preparations.
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S. Toriyama (1987) studied this question.