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Flavonoid biosynthesis in the tea plant Camellia sinensis: properties of enzymes of the prominent epicatechin and catechin pathways.
- P. Punyasiri, I. Abeysinghe, +6 authors T. Fischer
- Chemistry, Medicine
- Archives of biochemistry and biophysics
- 1 November 2004
Leaves of tea (Camellia sinensis L.) contain extraordinary large amounts of (-)-epigallocatechin, (-)-epicatechin, (+)-gallocatechin, and (+)-catechin and derivatives of these compounds that show… Expand
Phloridzin: biosynthesis, distribution and physiological relevance in plants.
The phenolic compound phloridzin (phloretin 2'-O-glucoside, phlorizin, phlorrhizin, phlorhizin or phlorizoside) is a prominent member of the chemical class of dihydrochalcones, which are… Expand
Biosynthesis of phloridzin in apple (Malus domestica Borkh.)
Abstract In contrast to the ubiquitously present flavonoids, dihydrochalcones seem to be restricted to approx. 30 plant families. In apple (Malus domestica Borkh.), the dihydrochalcone phloridzin… Expand
Flavonoid genes of pear (Pyrus communis)
Pear (Pyrus sp.) is a major fruit crop of temperate regions with increasing extent of cultivation. Pear flavonoids contribute to its fruit color, pathogen defense, and are health beneficial… Expand
Substrate specificity and contribution of the glycosyltransferase UGT71A15 to phloridzin biosynthesis
The dihydrochalcone phloridzin (phloretin 2′-O-glucoside) is the most abundant phenolic compound in apple trees (Malus × domestica) and was also discussed to have an influence on the pathogen defence… Expand
Dihydroflavonol 4-Reductase Genes Encode Enzymes with Contrasting Substrate Specificity and Show Divergent Gene Expression Profiles in Fragaria Species
During fruit ripening, strawberries show distinct changes in the flavonoid classes that accumulate, switching from the formation of flavan 3-ols and flavonols in unripe fruits to the accumulation of… Expand
Potent and specific bactericidal effect of juglone (5-hydroxy-1,4-naphthoquinone) on the fire blight pathogen Erwinia amylovora.
- T. Fischer, C. Gosch, Beate Mirbeth, Markus Gselmann, Veronika Thallmair, K. Stich
- Biology, Medicine
- Journal of agricultural and food chemistry
- 29 November 2012
A screening of plant quinones for inhibiting effects on the bacterial fire blight pathogen Erwinia amylovora was performed. The most active compound, juglone from walnuts, has a potent and specific… Expand
Silencing of flavanone-3-hydroxylase in apple (Malus × domestica Borkh.) leads to accumulation of flavanones, but not to reduced fire blight susceptibility.
- H. Flachowsky, H. Halbwirth, +6 authors T. Fischer
- Biology, Medicine
- Plant physiology and biochemistry : PPB
- 1 February 2012
Transgenic antisense flavanone-3-hydroxylase apple plants were produced to mimic the effect of the agrochemical prohexadione-Ca on apple leaves. This enzyme inhibitor for 2-oxoglutarate dependent… Expand
Cloning and heterologous expression of glycosyltransferases from Malus x domestica and Pyrus communis, which convert phloretin to phloretin 2'-O-glucoside (phloridzin)
Abstract Phloridzin (phloretin 2′- O -glucoside) is the most abundant phenolic compound in apple ( Malus x domestica ) and represents up to 14% of dry weight in leaves. In contrast, the closely… Expand
Investigation of the biosynthesis of 3‐deoxyanthocyanins in Sinningia cardinalis
3-Deoxyanthocyanins provide bright orange-red colours to flowers of some members of the Gesneriaceae, including sinningia (Sinningia cardinalis). We examined 3-deoxyanthocyanin biosynthesis in… Expand