Degradation of the Isoflavone Biochanin A and Its Glucoside Conjugates by Ascochyta rabiei
AUTOR(ES)
Kraft, Birgit
RESUMO
Strains of Ascochyta rabiei which are pathogenic to chickpea (Cicer arietinum L.) readily catabolized the main chickpea isoflavone biochanin A (5,7-dihydroxy-4′-methoxyisoflavone). 3′-Hydroxylation and O-demethylation reactions led to the isoflavones pratensein, genistein, and orobol, which were rapidly further degraded. Dihydrogenistein and p-hydroxyphenylacetic acid were also identified as catabolites. Biochanin A-7-O-glucoside was degraded, leading to aglycone and pratensein. Biochanin A-7-O-glucoside-6″-O-malonate, the main phenolic constituent of chickpea, was very slowly degraded without subsequent accumulation of catabolites.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=238571Documentos Relacionados
- A comparison of methods for the detection of Ascochyta rabiei in chickpea seeds
- Copper Amine Oxidase Expression in Defense Responses to Wounding and Ascochyta rabiei Invasion1
- Manejo de Ascochyta rabiei por Meio de Extratos de Folhas de Chenopodium album
- Interaction of Indoleacetic Acid with Its Inositol and Glucoside Conjugates in Avena Coleoptile Curvature 1
- The plant oncogene rolC is responsible for the release of cytokinins from glucoside conjugates.