The Presence of DNA in Ribosome-Deficient Plastids of Heat-Bleached Rye Leaves
- 1 March 1980
- journal article
- research article
- Published by Wiley in European Journal of Biochemistry
- Vol. 104 (2), 603-609
- https://doi.org/10.1111/j.1432-1033.1980.tb04464.x
Abstract
In leaves of rye seedlings (S. cereale L.) grown at 32.degree. C the formation of plastid (70-S) ribosomes is specifically prevented. The resulting plastid-ribosome-deficient leaves can be used as a suitable system to identify chloroplast proteins which are translation products of cytosolic (80-S) ribosomes. The ribosome deficiency in plastids is accompanied by a bleaching of the leaves in light. In experiments aimed at finding the primary heat-sensitive event leading to ribosome deficiency, the DNA of rye chloroplasts has been identified. Its properties are similar to those of chloroplast DNA from other higher plants. The ribosome-deficient plastids isolated from heat-bleached rye leaves contained a DNA species which was indistinguishable from that of chloroplasts with regard to buoyant density in CsCl equilibrium gradients, reassociation properties and fragment patterns obtained upon cleavage by restriction endonucleases. Its quantity was comparable to that of chloroplast DNA of green leaves grown at a permissive temperature (22.degree. C). Unlike the effect in heat-bleached Euglena strains, lack of chloroplast DNA cannot be considered as the reason for the primary effect of high temperature on rye leaves, but steps in the biosynthetic pathway of plastid ribosomes themselves must be affected more directly.This publication has 39 references indexed in Scilit:
- Study of wheat phylogeny by coRI analysis of chloroplastic and mitochondrial DNAsPlant Science Letters, 1978
- Unterschiedliche Temperaturoptima der DNA-abhängigenRNA-Polymerasen von Euglena gracilis, Stamm Z und ihre Bedeutung fur die experimentelle Erzeugung der permanenten Apochlorose durch höhere TemperaturZeitschrift für Pflanzenphysiologie, 1977
- Occurrence of a High Temperature Sensitivity of Chloroplast Ribosome Formation in Several Higher PlantsPlant Physiology, 1977
- Capacity for chlorophyll synthesis in heat-bleached 70S ribosome-deficient rye leavesPlanta, 1977
- Events surrounding the early development of Euglena chloroplastsArchives of Biochemistry and Biophysics, 1976
- Formation of chloroplast pigments and sterols in rye leaves deficient in plastid ribosomesPlanta, 1976
- Biochemical differentiation of plastids and other organelles in rye leaves with a high-temperature-induced deficiency of plastid ribosomesPlanta, 1976
- The molecular size and conformation of the chloroplast DNA from higher plantsBiochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1975
- Size, conformation and purity of chloroplast DNA of some higher plantsBiochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1975
- Ribosomal-RNA genes in the chloroplast DNA of pea leavesBiochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1974