FORMIC ACID METABOLISM IN BARLEY LEAVES

Transformations of labeled formic acid, formaldehyde, methanol, & CO(2) absorbed by bean & barley leaves from air.

The lower layers of the atmosphere are known to contain some volatile organic substances, formed as a result of the activity of various organisms, industrial activity of man, and geochemical processes. Though usually the amount of these substances in the air is insignificant, their presence is, nevertheless, a practically constant factor affecting in some manner, directly or indirectly, vital a...

The effects of levulinic Acid and 4,6-dioxoheptanoic Acid on the metabolism of etiolated and greening barley leaves.

Application of levulinic acid (LA), a competitive inhibitor of delta-aminolevulinic acid (ALA) dehydratase, to greening plant tissues causes ALA to accumulate at the expense of chlorophyll. 4,6-Dioxoheptanoic acid (DA), which has been reported to be an effective inhibitor of this enzyme in animal systems, has a similar but more powerful effect on ALA and chlorophyll metabolism in greening leave...

A possible role for abscisic Acid in regulation of photosynthetic and photorespiratory carbon metabolism in barley leaves.

The influence of abscisic acid (ABA) on carbon metabolism, rate of photorespiration, and the activity of the photorespiratory enzymes ribulose bisphosphate oxygenase and glycolate oxidase in 7-day-old barley seedlings (Hordeum vulgare L. var. Alfa) was investigated. Plants treated with ABA had enhanced incorporation of labeled carbon from (14)CO(2) into glycolic acid, glycine, and serine, while...

Abscisic Acid localization and metabolism in barley aleurone layers.

Aleurone layers of Hordeum vulgare, cv. ;Himalaya' took up [(14)C]-abscisic acid (ABA) when incubated for various times. Radioactivity accumulated with time in a low speed, DNA-containing pellet accounting for 1.6 to 2.3% of the radioactivity recovered in subcellular fractions at 18 hours. Thin layer chromatography of ethanolic or methanolic extracts of the cytosol, which contained greater than...

Treatment of Warts with Topical Formic Acid