Light-dependent Synthesis of δ-aminolaevulinic Acid Dehydratase During the Developmental Period of Trapella Seedlings
✍ Scribed by Akira Yabe; Hideo Takada
- Book ID
- 102869012
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- English
- Weight
- 597 KB
- Volume
- 59
- Category
- Article
- ISSN
- 1434-2944
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Mature seeds of Trapella sinensis, after removal of receptacles, were germinated for 10 days at 23°C in the dark and then were illuminated. After illumination, the activity of δ‐aminolaevulinic acid (ALA) dehydratase was determined in relation to chlorophyll synthesis, and increases in dry weight of the whole or of parts of a developing seedling. Internal programming of development was related to changes in ALA dehydratase activity on the basis of porphobilinogen synthesis. Exogenously added ALA as well as an extract of Chlorella cells promoted this activity. There was an enhancement of chlorophyll formation resulting in an enhancement of the photosynthetic rate and in an increase of growth promotion by addition of Chlorella extract.