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. 1989 Jul;171(7):4085-7.
doi: 10.1128/jb.171.7.4085-4087.1989.

Regulation and role in pathogenicity of Erwinia chrysanthemi 3937 pectin methylesterase

M Boccara  1 , V Chatain
Affiliations

Regulation and role in pathogenicity of Erwinia chrysanthemi 3937 pectin methylesterase

M Boccara et al. J Bacteriol. 1989 Jul.

Abstract

The gene pem, encoding the pectin methylesterase (PME) of Erwinia chrysanthemi 3937, was cloned and mutagenized by mini-Mu transposable elements. A second gene, pecY, which could act as a negative regulator of PME was found 5' to the pem gene. A PME-E. chrysanthemi derivative inoculate onto Saintpaulia plants was shown to be clearly noninvasive, demonstrating the important role of this enzyme in soft rot disease.

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