Porphyrin metabolism in chill-stressed seedlings of Scots pine (Pinus sylvestris)
| Autor: | Rrw Hodgins, Gunnar Oquist |
|---|---|
| Rok vydání: | 1989 |
| Předmět: |
chemistry.chemical_classification
Chlorophyll a biology Sensitive-plant Physiology Scots pine Cell Biology Plant Science General Medicine biology.organism_classification Porphyrin chemistry.chemical_compound Pigment chemistry Chlorophyll visual_art Botany Etiolation Genetics visual_art.visual_art_medium Carotenoid |
| Zdroj: | Physiologia Plantarum. 77:620-624 |
| ISSN: | 1399-3054 0031-9317 |
| Popis: | Scots pine (Pinus sylvestris L.) is generally resistant to chilling temperatures. Porphyrin metabolism under low temperature stress was studied in etiolated seedlings of Scots pine. Low temperatures affect porphyrin accumulation in at least 3 different temperature sensitive sites: 1) the light activated accumulation of 5-aminolevulinic acid, a porphyrin precursor, 2) the metabolism of 5-aminolevulinic acid to form porphyrins and 3) a preferential accumulation of chlorophyll a over chlorophyll b. The temperature sensitivity of pine is compared to maize (Zea mays L.), a chilling sensitive plant. |
| Databáze: | OpenAIRE |
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