Pseudomonas syringae socially-induced swimming motility requires the molybdenum cofactor
Yang, Z.; Swingle, B.
Show abstract
Social interactions among bacteria can induce behaviors that affect their fitness and influence how complex communities assemble. Here we report a new socially-induced motility behavior that we refer to as baited expansion in Pseudomonas syringae pv. tomato DC3000 (Pst DC3000), a plant pathogenic bacterium. We found Pst DC3000 displayed strongly-induced swimming motility towards nearby colonies of Dickeya dianthicola or Escherichia coli. We developed a controlled system to visualize and characterize the development of baited expansion. Our results provide evidence that baited expansion behavior occurs in response to a chemical gradient established and maintained by the bait colony. We also found this behavior correlated with distinct transcriptional profiles and identified molybdenum cofactor as a crucial factor in facilitating the baited expansion behavior.
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