Carbon dioxide fixation by chloroplasts isolated in glycinebetaine. A putative cytoplasmic osmoticum

Spinach chloroplasts capable of high rates of CO2 fixation have been isolated in glycinebetaine as an alternative osmoticum to sorbitol and found to be very stable. Proline was a less satisfactory alternative. The possible significance of the use of glycinebetaine is discussed as this solute may be...

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Bibliographic Details
Published in:Planta 1979, Vol.145 (4), p.393-394
Main Authors: Larkum, A.W.D, Wyn Jones, R.G
Format: Article
Language:English
Subjects:
Betaines
Chloroplasts
Dehydration
Plant biochemistry
Plant cells
Plants
Short Communication
Solutes
Spinach
Summer
Winter
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Summary:Spinach chloroplasts capable of high rates of CO2 fixation have been isolated in glycinebetaine as an alternative osmoticum to sorbitol and found to be very stable. Proline was a less satisfactory alternative. The possible significance of the use of glycinebetaine is discussed as this solute may be the physiological cytoplasmic osmoticum in members of the Chenopodiaceae.
ISSN:0032-0935
1432-2048
DOI:10.1007/BF00388367