Electronic Resource
Oxford, UK
:
Blackwell Publishing Ltd
Physiologia plantarum
40 (1977), S. 0
ISSN:
1399-3054
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
Squash (Cucurbita maxima Duchesne) plants were grown on normal and on nitrogen-deficient nutrients. The degrees of label incorporation into chloroplast lipids as well as non-chloroplast lipids were determined. Nitrogen-deficient tissues contain less chlorophyll, have a decreased chlorophyll a/b ratio, incorporate more label into phosphatidyl choline and phosphatidyl ethanolamine than into the chloroplast lipids such as mono- and digalactosyl diglycerides, have a reduced capacity to incorporate the hexose moieties into the glycolipids but normal capacity to incorporate bases into the phospholipids of non-chloroplast constituents, and have a normal level of total fatty acids even though the level of linolenate is decreased. All of this would suggest that the most evident changes in membrane lipid constituents during nitrogen-deficiency occur as changes in the chloroplast lipid constituents as opposed to the non-chloroplast lipid constituents.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1399-3054.1977.tb04048.x
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