Summary
The ribsome-deficient plastids of the albino leaves of the barley mutant ”albostrians“ divide at about the same rate as normal plastids and contain similar levels of plastids DNA to the normal plastids. Double-ring structures were observed around the neck of constricting dumbbell-shaped, ribosome-deficient plastids in the basal intercalary meristem of albino leaves. In the distal region of albino leaves the ribosome-deficient plastids contain a rudimentary thylakoid system often closely associated with DNA nucleoids. It is suggested that nuclear coded proteins synthesized within the cytoplasm are responsible for the formation of the double-ring structures and the rudimentary thylakoids of albino plastids.
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Hashimoto, H., Possingham, J.V. Division and DNA distribution in ribosome-deficient plastids of the barley mutant “albostrians”. Protoplasma 149, 20–23 (1989). https://doi.org/10.1007/BF01623978
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DOI: https://doi.org/10.1007/BF01623978