EC Number   |
General Information |
Reference |
|---|
   1.17.1.3 | physiological function |
leucoanthocyanidin reductase converts leucoanthocyanidin to (+)-catechin, a precursor of proanthocyanidins abundant in Japanese persimmon fruits |
-, 714393 |
| 1.17.1.3 | physiological function |
role for leucoanthocyanidin reductase in the extension of proanthocyanidins. Monomeric flavan-3-ols do not dimerize in autopolymerization assays, whereas procyanidin B2 oligomerizes, either alone or with monomeric flavan-3-ols, suggesting that formation of epicatechin carbocation is a crucial step for proanthocyanidin assembly |
-, 745869 |
| 1.17.1.3 | physiological function |
the enzyme catalyzes the synthesis of (+)-catechin, a flavan-3-ol that is a precursor of the proanthcyanidins from leucoanthocyanidin. Presence of two PaLAR3 allelic lineages in Picea abies. Higher resistance to Heterobasidion annosum s.l., a pathogenic basidiomycete species complex, is associated with the newly detected allele, which is found in low frequency in the four Picea abies populations. Norway spruce plants carrying at least one copy of the newly detected allele show a significant reduction in fungal growth in sapwood (FGS) after inoculation with Heterobasidion parviporum compared to their half-siblings carrying no copies, indicating dominance of this allele. The amount of (+)-catechin, the enzymatic product of PaLAR3, is significantly higher in bark of trees homozygous for the secod allele. Regulation of gene expression is responsible for effects in resistance, possibly caused by differences in cis-acting elements that are observed in the promoter region of the two alleles. PaLAR3A and PaLAR3B show similar enzymatic activity. Constitutive bark (+)-catechin content is higher in PaLAR3B homozygotes |
746116 |
| 1.17.1.3 | physiological function |
the enzyme converts leucoanthocyanidins into nonalloylated catechins. The majority of leaf flavan-3-ols in Shuchazao's leaves are produced from the ANR pathway |
745825 |
| 1.17.1.3 | physiological function |
the enzyme is required in the proanthocyanidin biosynthesis |
746163 |
| 1.17.1.3 | physiological function |
the relationship between the proanthocyanidin biosynthesis and the expression of genes encoding leucoanthocyanidin reductase (LAR) and anthocyanidin reductase (ANR, EC 1.3.1.77) is analyzed in fruit skin of one apple cultivar and three crab apples showing that transcript levels of LAR1 and ANR2 genes are significantly correlated with the contents of catechin and epicatechin, respectively, which suggests their active roles in proanthocyanidin biosynthesis |
-, 744993 |
