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Biosci Biotechnol Biochem. 2002 Feb;66(2):444-7.

Temperature-dependent production of carotovoricin Er and pectin lyase in phytopathogenic Erwinia carotovora subsp. carotovora Er.

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Department of Molecular and Cell Biology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan.


The production of pectin lyase (Pnl) and carotovoricin (Ctv), as well as cell lysis in the plant-pathogenic bacterium Erwinia carotovora subsp. carotovora Er are induced by mitomycin C. Here, Pnl and Ctv production and cell lysis were found to be temperature-dependent. The optimal temperature for Pnl production was 30 degrees C. However, the optimal temperature for both Ctv production and cell lysis was 23 degrees C, at which Pnl production was reduced to 47% of the maximum. These data suggest the possible existence of novel regulation system(s) for the production of Pnl and Ctv, and cell lysis, in addition to the well-documented regulation system of recA, rdgA, and rdgB genes.

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