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. 2015 Jun 10;6:440. doi: 10.3389/fpls.2015.00440

Figure 9.

Figure 9

Hypothetical model illustrating the cellular localization and the link of V. dahliae quercetinase with structural transmembrane proteins, ATPase, other carbohydrate hydrolases and sugar transporters/permeases. After cleavage of the sugar moieties of rutin a dioxygenation of the aglycone quercetin occurs via the activity of the quercetinase. The by-product of dioxygenation 2-protocatechoylphlorogluciol carboxylic acid (2-PCPGCA) could be cleaved into phloroglucinol (PG) and protocatechuic acid (PC). PC could be converted to benzoic (BA) and salicylic acid (SA). The SA could trigger SA-pathway to interact with the JA via yet unidentified factor(s).