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Catabolism of 5-Aminolevulinic Acid to CO(2) by Etiolated Barley Leaves
- Source :
- Plant physiology. 69(1)
- Publication Year :
- 1982
-
Abstract
- The in vivo oxidation of the C(4) and C(5) of 5-aminolevulinic acid (ALA) to CO(2) has been studied in etiolated barley (Hordeum vulgare L. var. Larker) leaves in darkness. The rate of (14)CO(2) evolution from leaves fed [4-(14)C]ALA is strongly inhibited by aminooxyacetate, anaerobiosis, and malonate. The rate of (14)CO(2) evolution from leaves fed [5-(14)C]ALA is also inhibited by these treatments but to a lesser extent. These results suggest that (a) one step in ALA catabolism is a transamination reaction and (b) the C(4) is oxidized to CO(2) via the tricarboxylic acid cycle to a greater extent than is the C(5).
Details
- ISSN :
- 00320889
- Volume :
- 69
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Plant physiology
- Accession number :
- edsair.doi.dedup.....fbb06fc4780065ca28a0a868f090ba78