   1.13.11.24 | physiological function |
the enzyme is a cupin domain-containing protein with dioxygenase activity and quercetinase activity (VdQase) regulating Verticillium dahliaes pathogenicity in potato roots and contributing to counteraction against host defenses. Involvement of enzyme VdQase in the catabolism of quercetin and possibly other flavonols in planta. Involvement of VdQase in the interference with signaling, suggesting a role in pathogenicity. It is hypothesized that the by-product of dioxygenation 2-protocatechuoylphloroglucinolcarboxylic acid, after dissociating into phloroglucinol and protocatechuoyl moieties, becomes a starting point for benzoic acid and salicylic acid, thereby interfering with the jasmonate pathway and affecting the interaction outcome. These events may be key factors for Verticillium dahliaes in countering potato defenses and becoming notorious in the rhizosphere. Role of VdQase in rutin and quercetin utilization, overview |
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