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Long-term Survival and Seed Transmission of Acidovorax avenae subsp. citrulli in Melon and Watermelon Seed

C. C. Block and L. M. Shepherd

December 2008


Seed transmission of A. avenae subsp. citrulli is key in the dissemination of bacterial fruit blotch of cucurbits. This study reports its survival and seed transmission from watermelon and melon seed lots that were more than 30 yr old. The longest previously-reported survival of A. avenae subsp. citrulli was from 19-yr-old watermelon seed and the longest reported survival for any seedborne bacterial plant pathogen was 24 yr for Curtobacterium flaccumfaciens pv. flaccumfaciens from common bean seed.


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