Requires a molybdenum cofactor for activity. NADP+ cannot replace NAD+ and short-chain alcohols such as ethanol, isopropanol, butanol and cyclohexanol cannot replace xanthoxin as substrate . Involved in the abscisic-acid biosynthesis pathway in plants, along with EC 1.2.3.14 (abscisic-aldehyde oxidase), EC 1.13.11.51 (9-cis-epoxycarotenoid dioxygenase) and EC 1.14.13.93 [(+)-abscisic acid 8'-hydroxylase]. Abscisic acid is a sesquiterpenoid plant hormone that is involved in the control of a wide range of essential physiological processes, including seed development, germination and responses to stress .
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
SYSTEMATIC NAME
IUBMB Comments
xanthoxin:NAD+ oxidoreductase
Requires a molybdenum cofactor for activity. NADP+ cannot replace NAD+ and short-chain alcohols such as ethanol, isopropanol, butanol and cyclohexanol cannot replace xanthoxin as substrate [3]. Involved in the abscisic-acid biosynthesis pathway in plants, along with EC 1.2.3.14 (abscisic-aldehyde oxidase), EC 1.13.11.51 (9-cis-epoxycarotenoid dioxygenase) and EC 1.14.13.93 [(+)-abscisic acid 8'-hydroxylase]. Abscisic acid is a sesquiterpenoid plant hormone that is involved in the control of a wide range of essential physiological processes, including seed development, germination and responses to stress [3].
the aba2 mutant displays less seed dormancy, glucose insensitivity, small plat size, early flowering, and wiltness, no complementation by expression of AtSDR3, enotype, overview
the so-called wilty mutation affects the xanthoxin dehydrogenase step in abscisic acid biosynthesis. Functional abscisic acid biosynthesis is critical for normal stomatal responses to changes in humidity in angiosperms,with wilty mutant plants having no increase in foliar abscisic acid levels in response to a doubling in vapour pressure deficit, and no closure of stomata
expression of Oryza sativa ABA2 in an Arabidopsis Aba2 mutant rescues the Aba2 mutant phenotypes, characterized by reduced growth, increased water loss, and germination in the presence of paclobutrazol
generation of aba2 mutants. The pABA2::SDR3 transgene fails to complement the aba2 mutant phenotype, and transgenic plants show the same levels of ABA as the aba2 mutants, phenotype, overview
generation of aba2 mutants. The pABA2::SDR3 transgene fails to complement the aba2 mutant phenotype, and transgenic plants show the same levels of ABA as the aba2 mutants, phenotype, overview
the so-called wilty mutation affects the xanthoxin dehydrogenase step in abscisic acid biosynthesis. Functional abscisic acid biosynthesis is critical for normal stomatal responses to changes in humidity in angiosperms,with wilty mutant plants having no increase in foliar abscisic acid levels in response to a doubling in vapour pressure deficit, and no closure of stomata
gene ABA2, encodes a short-chain dehydrogenase/reductase1 (SDR1) that catalyzes the multistep conversion of xanthoxin to abscisic aldehyde during abscisic acid biosynthesis in Arabidopsis thalian, genotyping
Antagonism between abscisic acid and ethylene in Arabidopsis acts in parallel with the reciprocal regulation of their metabolism and signaling pathways
The Arabidopsis short-chain dehydrogenase/reductase 3, an abscisic acid deficient 2 homolog, is involved in plant defense responses but not in ABA biosynthesis
Molecular characterization of a mutation affecting abscisic acid biosynthesis and consequently stomatal responses to humidity in an agriculturally important species
HOME
login
history
all enzymes
BRENDA home
History
1.1.1.288 xanthoxin dehydrogenase
more
top
Information
