Journal
FEMS MICROBIOLOGY LETTERS
Volume 299, Issue 2, Pages 193-199Publisher
OXFORD UNIV PRESS
DOI: 10.1111/j.1574-6968.2009.01747.x
Keywords
Xylella fastidiosa; tonB; twitching; biofilm; virulence
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Funding
- USDA
- CSREES
- Nanobiotechnology Center
- National Science Foundation [ECS-9876771]
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A mutation in the Xylella fastidiosa tonB1 gene resulted in loss of twitching motility and in significantly less biofilm formation as compared with a wild type. The altered motility and biofilm phenotypes were restored by complementation with a functional copy of the gene. The mutation affected virulence as measured by Pierce's disease symptoms on grapevines. The role of TonB1 in twitching and biofilm formation appears to be independent of the characteristic iron-uptake function of this protein. This is the first report demonstrating a functional role for a tonB homolog in X. fastidiosa.
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