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acetaldehyde biosynthesis I

|FRAME: ACETALD "Acetaldehyde"| is released by plants into the atmosphere after a wide variety of stresses. Acetaldehyde is a potent antibiotic and its emission from damaged tissue may help prevent infections |CITS: [12381119]| and activate the expression of plant defense genes |CITS: [ADEGE98]|. Enhanced acetaldehyde emissions have been observed following mechanical wounding, desiccation, freeze?thaw events, herbivore attack, ozone fumigation, high light, high temperature, and many other biotic and abiotic stresses. Since acetaldehyde is reactive in the atmosphere, its emisions is of interest to atmospheric chemists, who are not able to account for large amounts of biogenic |FRAME: ACETALD| |CITS: [19538397]|. One source of |FRAME: ACETALD| is |FRAME: ETOH|. In anoxic conditions, ethanol produced from ethanolic fermentation in roots is transported to leaves via the transpiration stream, where it is oxidized to acetaldehyde by |FRAME: MONOMER-15105| enzymes |CITS: [15143438]|. Bursts of acetaldehyde emissions were reported to occur following light?dark transitions |CITS: [Karl02]|. It has also been suggested that the full ethanolic fermentation pathway may be active in leaves under aerobic conditions |CITS: [JARDINE08]|. Sequence comparison of cis-regulating signals of acetaldehyde dehydrogenase (adh) from different species such as |FRAME: TAX-4097|, |FRAME: TAX-3888| and |FRAME: TAX-4577| showed that a short stretch of the promoter region may be involved in the anaerobic regulation of plant adh genes |CITS: [3309331]|.

from BIOCYC source record: META_PWY-6333
Type: pathway
Taxonomic scope
conserved biosystem

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