The Biosynthesis of delta-Aminolevulinic Acid in Higher Plants: I. Accumulation of delta-Aminolevulinic Acid in Greening Plant Tissues |
| |
Authors: | Beale S I Castelfranco P A |
| |
Institution: | Department of Botany, University of California, Davis, California 95616. |
| |
Abstract: | δ-Aminolevulinic acid dehydrase activity in cucumber (Cucumis sativus L. var. Alpha green) cotyledons did not change as the tissue was allowed to green for 24 hours. δ-Aminolevulinic acid accumulated in greening cucumber cotyledons, and barley (Hordeum sativum L. var. Numar) and bean (Phaseolus vulgaris L. var. Red Kidney) leaves incubated in the presence of levulinic acid, a specific competitive inhibitor of δ-aminolevulinic acid dehydrase. The rate of δ-aminolevulinic acid accumulation in levulinic acid-treated cucumber cotyledons paralleled the rate of chlorophyll accumulation in the controls, and the quantity of δ-aminolevulinic acid accumulated compensated for the decrease in chlorophyll accumulation. When levulinic acid-treated cucumber cotyledons were returned to darkness, δ-aminolevulinic acid accumulation ceased. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|