2.1.1.275: gibberellin A9 O-methyltransferase
This is an abbreviated version!
For detailed information about gibberellin A9 O-methyltransferase, go to the full flat file.
Reaction
Synonyms
GA methyl transferase 1, GAMT1
ECTree
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General Information
General Information on EC 2.1.1.275 - gibberellin A9 O-methyltransferase
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malfunction
GAMT1 null mutant shows reduced inhibition of germination, compared with the wild type, when placed on plates containing the gibberellin biosynthesis inhibitor ancymidol
physiological function
methylation of gibberellins by the enzyme serves to deactivate gibberellins and initiate their degradation as the seeds mature
physiological function
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tomato plants overexpressing the enzyme exhibit typical gibberellin-deficiency phenotypes and increased tolerance to drought stress. Enzyme overexpression inhibits the expansion of leaf-epidermal cells, leading to the formation of smaller stomata with reduced stomatal pores