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Ribosome-thylakoid association in peas. Influence of anoxia

Alscher-Herman, R ; Jagendorf, A T ; Grumet, R

Plant physiology (Bethesda), 1979-08, Vol.64 (2), p.232-235 [Periódico revisado por pares]

United States: American Society of Plant Physiologists

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  • Título:
    Ribosome-thylakoid association in peas. Influence of anoxia
  • Autor: Alscher-Herman, R ; Jagendorf, A T ; Grumet, R
  • Assuntos: Anoxia ; Chloroplasts ; Leaves ; Peas ; Plants ; Polyribosomes ; Protein synthesis ; Ribosomes ; RNA ; Thylakoids
  • É parte de: Plant physiology (Bethesda), 1979-08, Vol.64 (2), p.232-235
  • Notas: F60
    F
    ObjectType-Article-1
    SourceType-Scholarly Journals-1
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    Supported in part by National Science Foundation Grant BMS-74-13534.
    Supported by NIH Postdoctoral Fellowship 1 F32 GM05172. Present address: Boyce Thompson Institute for Plant Research, Cornell University, Ithaca, New York 14853.
    To whom reprint requests should be addressed.
    Present address: Department of Horticulture, Michigan State University, East Lansing, Michigan 48824.
  • Descrição: Isolated pea chloroplast thylakoids ordinarily have ribosomes attached which survive sequential washes. Extensive in vivo loss of these thylakoid-bound ribosomes if the pea plants were placed in the dark without O2 for 2 or more hours. This loss was indicated from measurements of both the total thylakoid-bound RNA levels, and the capacity for amino acid incorporation into proteins on the addition of soluble enzymes for protein synthesis. Stroma ribosome profiles lost any indication of polysome structure due to the same anoxic treatment in vivo. The return of ribosomes to the thylakoids when plants were placed in the light in air occurred over an 8-hour time course. This return was prevented by lincomycin, spectinomycin, and chloramphenicol, indicating a requirement for protein synthesis steps in the stroma at some point in the reassociation process.
  • Editor: United States: American Society of Plant Physiologists
  • Idioma: Inglês
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