EC Number   |
General Information |
Reference |
|---|
   2.4.1.121 | evolution |
the enzyme belongs to the UDP-sugar dependent transferases |
736956 |
| 2.4.1.121 | malfunction |
disruption of OsIAGLU results in low seed vigour in rice, ABA-sensitive phenotypes during seed germination, overview |
759929 |
| 2.4.1.121 | malfunction |
Overexpression of OsIAAGLU results in altered plant architecture. The number of tillers and leaf angle is significantly increased with a concomitant decrease in plant height and panicle length in the transgenic rice lines overexpressing OsIAAGLU compared to the wild-type plants. Phenotypes of iaaglu mutants show no obvious differences with wild-type plants. Overexpression of OsIAAGLU results in reduced sensitivity to indole-3-acetic acid (IAA) and 1-naphthalene acetic acid (NAA) and altered gravitropic response of the roots in the transgenic plants. Free IAA contents in the leaves, root tips, and lamina joint of OsIAAGLU-overexpressing transgenic lines are lower than those of wild-type plants. The transgenic plants are shorter than the wild-type plants and exhibit exaggerated leaf angles at the 5-leaf stage compared to the wild-type plants |
759948 |
| 2.4.1.121 | metabolism |
the enzyme catalyzes the first step in the biosynthesis of indol-3-yl ester conjugates in monocotyledonous plants |
736956 |
| 2.4.1.121 | physiological function |
1-O-(indol-3-yl)acetyl-beta-D-glucose, synthesized by the enzyme, is the substrate for (indol-3-yl)acetate labeling of glycoproteins from pea seeds indicating a possible role of this enzyme in the covalent modification of a class of proteins by a plant hormone. Auxin is a key plant hormone that regulates many physiological processes in plants including organ morphogenesis (i.e. apical dominance, root development) and environmental responses (biotic and abiotic stress). The major auxin is indole-3-acetic acid (IAA), but other indole-derived carboxylic acids, i.e. indole-3-butyric acid, indole-3-propionic acid, 4-chloro-indole-3-acetic acid, and indole-3-pyruvic acid have also auxin activity. Auxin action is highly dependent on its concentration, which must be precisely controlled |
736956 |
| 2.4.1.121 | physiological function |
indole-3-acetic acid glucosyltransferase (OsIAAGLU) catalyzes the reaction of free indole-3-acetic acid (IAA) with glucose to generate IAA-glucose. OsIAAGLU plays a regulatory role in IAA homeostasis and rice architecture |
759948 |
| 2.4.1.121 | physiological function |
the enzyme plays a role on seed vigour in seeds. Transcriptome analysis reveals that the indole-3-acetic acid (IAA)- and abscisic acid (ABA)-related genes are involved in the OsIAGLU regulation of seed vigour in rice. The regulation of seed vigour by OsIAGLU accurs through modulating IAA and ABA levels to alert OsABIs expression in germinating seeds in rice. Based on analysis of single-nucleotide polymorphism data of rice accessions, two haplotypes of OsIAGLU that positively correlate with seed vigour are identified in Oryza sativa subsp. indica accessions. OsIAGLU regulates seed vigour involved in OsABIs expression |
759929 |
