Studies with 4,6-Dioxoheptanoic Acid on Etiolated and Greening Barley Leaves 1

AUTOR(ES)

Meller, Erna

RESUMO

4,6-Dioxoheptanoic acid (DA), an inhibitor of 5-aminolevulinic acid (ALA) dehydratase (EC 4.3.1.24), causes ALA to accumulate at the expense of chlorophyll when applied to greening leaves of Hordeum vulgare L. var. Larker. Preincubating etiolated leaves with DA in darkness eliminates the lag phase in ALA accumulation during a subsequent exposure to illumination. More than 50% of the DA taken up during a 2-hour incubation disappeared during a subsequent 4-hour incubation. These results suggest that barley leaves can metabolize DA, and the products of this metabolism may enhance the capacity for ALA synthesis.

Documentos Relacionados

• The Effects of Levulinic Acid and 4,6-Dioxoheptanoic Acid on the Metabolism of Etiolated and Greening Barley Leaves 1
• Catabolism of [1-14C]Levulinic Acid by Etiolated and Greening Barley Leaves 1
• The Hill Reaction: Development of Chloroplast Activity During Greening of Etiolated Barley Leaves
• Changes in Sterol Composition during Greening of Etiolated Barley Shoots 1
• Catabolism of 5-Aminolevulinic Acid to CO2 by Etiolated Barley Leaves 1