Plasmid-encoded dissimilation of condensed tannin in<i>Pseudomonas solanacearum</i>

Abstract

&lt;it&gt;Pseudomonas solanacearum&lt;/it&gt; degrades catechin to phloroglucinolcarboxylic acid, protocatechuic acid, catechol, phloroglucinol, resorcinol and hydroxyquinol, which is plasmid-encoded. This dissimilatory plasmid, designated as pAMB1, was effectively cured by mitomycin C treatment and was transferred to a &lt;it&gt;Pseudomonas&lt;/it&gt; sp., with a transfer frequency of 2.2 × 10−5 transconjugants/donor cell. The cured strains did not utilize catechin or its intermediates, and lacked the plasmid.