Observations on chloroplast starch content and synthesis in the intertidal marine alga Codium fragile (Suringar) Hariot
A marked seasonal response was observed in the starch content of chloroplasts of Codium fragile sampled between November 1983 and November 1984. Chloroplast starch uniformly increased throughout the life-cycle of this alga, reaching a maximum in the summer months of approx. 5 mg glucose equivalents/...
| Veröffentlicht in: | The New phytologist. - 1979. - 108(1988), 3 vom: 20. März, Seite 285-290 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
1988
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| Zugriff auf das übergeordnete Werk: | The New phytologist |
| Schlagworte: | Journal Article Codium fragile Starch chloroplasts stromal phosphate |
| Zusammenfassung: | A marked seasonal response was observed in the starch content of chloroplasts of Codium fragile sampled between November 1983 and November 1984. Chloroplast starch uniformly increased throughout the life-cycle of this alga, reaching a maximum in the summer months of approx. 5 mg glucose equivalents/109 plastids when C. fragile was in the reproductive phase. Chloroplast starch content was found to be inversely proportional to the concentration of stromal phosphate, decreasing linearly from 5 to 2 mg glucose equivalents/109 plastids over a range of stromal phosphate values of 0·75-1·5 μmol PO4 /109 plastids. Similarly, the net amount of starch synthesized over 3 h by isolated chloroplasts increased linearly with respect to initial chloroplast starch content. These observations are discussed in relation to the regulation of starch synthesis by variations in the stromal P1 : PGA ratio |
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| Beschreibung: | Date Revised 20.04.2021 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 1469-8137 |
| DOI: | 10.1111/j.1469-8137.1988.tb04164.x |