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31P and13C-NMR studies of the phosphorus and carbon metabolites in the halotolerant alga, Dunaliella salina
Year:
1988
Authors :
אורן-שמיר, מיכל
;
.
Volume :
87
Co-Authors:
Bental, M., Department of Isotope Research, The Weizmann Institute of Science, Rehovot, Israel
Oren-Shamir, M., Department of Biochemistry, The Weizmann Institute of Science, Rehovot, Israel
Avron, M., Department of Biochemistry, The Weizmann Institute of Science, Rehovot, Israel
Degani, H., Department of Isotope Research, The Weizmann Institute of Science, Rehovot, Israel
Facilitators :
From page:
320
To page:
324
(
Total pages:
5
)
Abstract:
The intracellular phosphorus and carbon metabolites in the halotolerant alga Dunaliella salina adapted to different salinities were monitored in living cells by31P-and13C-nuclear magnetic resonance (NMR) spectroscopy. The13C-NMR studies showed that the composition of the visible intracellular carbon metabolites other than glycerol is not signiflcantly affected by the salinity of the growth medium. The T1 relaxation rates of the13C-glycerol signals in intact cells were enhanced with increasing salinity of the growth medium, in parallel to the expected increase in the intracellular viscosity due to the increase in intracellular glycerol. The31P-NMR studies showed that cells adapted to the various salinities contained inorganic phosphate, phosphomonoesters, high energy phosphatecompounds, and long chain polyphosphates. In addition, cells grown in media containing up to 1 molar NaCI contained tripolyphosphates. The tripolyphosphate content was also controlled by the availability of inorganic phosphate during cell growth. Phosphate-depleted D. salina contained no detectable tripolyphosphate signal. Excess phosphate, however, did not result in the appearance of tripolyphosphate in31P-NMR spectra of cells adapted to high (>1.5 molar NaCI) salinities. © 1988 American Society of Plant Biologists. All rights reserved.
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More details
DOI :
10.1104/pp.87.2.320
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
25007
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:11
Scientific Publication
31P and13C-NMR studies of the phosphorus and carbon metabolites in the halotolerant alga, Dunaliella salina
87
Bental, M., Department of Isotope Research, The Weizmann Institute of Science, Rehovot, Israel
Oren-Shamir, M., Department of Biochemistry, The Weizmann Institute of Science, Rehovot, Israel
Avron, M., Department of Biochemistry, The Weizmann Institute of Science, Rehovot, Israel
Degani, H., Department of Isotope Research, The Weizmann Institute of Science, Rehovot, Israel
31P and13C-NMR studies of the phosphorus and carbon metabolites in the halotolerant alga, Dunaliella salina
The intracellular phosphorus and carbon metabolites in the halotolerant alga Dunaliella salina adapted to different salinities were monitored in living cells by31P-and13C-nuclear magnetic resonance (NMR) spectroscopy. The13C-NMR studies showed that the composition of the visible intracellular carbon metabolites other than glycerol is not signiflcantly affected by the salinity of the growth medium. The T1 relaxation rates of the13C-glycerol signals in intact cells were enhanced with increasing salinity of the growth medium, in parallel to the expected increase in the intracellular viscosity due to the increase in intracellular glycerol. The31P-NMR studies showed that cells adapted to the various salinities contained inorganic phosphate, phosphomonoesters, high energy phosphatecompounds, and long chain polyphosphates. In addition, cells grown in media containing up to 1 molar NaCI contained tripolyphosphates. The tripolyphosphate content was also controlled by the availability of inorganic phosphate during cell growth. Phosphate-depleted D. salina contained no detectable tripolyphosphate signal. Excess phosphate, however, did not result in the appearance of tripolyphosphate in31P-NMR spectra of cells adapted to high (>1.5 molar NaCI) salinities. © 1988 American Society of Plant Biologists. All rights reserved.
Scientific Publication
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