Phytochrome Destruction: An Apparent Requirement for Protein Synthesis in the Induction of the Destruction Mechanism 1
AUTOR(ES)
Kidd, George H.
RESUMO
Examination of the phytochrome destruction reaction as a function of age in etiolated oat (Avena sativa L. cv. Garry) seedlings demonstrates that following illumination of 3-day-old shoots there is a lag, not observed in 4- or 5-day-old oats, prior to the onset of destruction. This light-mediated induction of the phytochrome destruction mechanism in 3-day-old shoots is inhibited by chloramphenicol, actinomycin D, and puromycin suggesting that protein synthesis is required. In 4-day-old shoots, actinomycin D and puromycin do not alter the kinetics of destruction while chloramphenicol partially inhibits the process. Thus, the inhibitors have a specific effect on the induction of the destruction mechanism but not its subsequent operation.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=366493Documentos Relacionados
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