Phytochrome-controlled Leaf Unrolling and Protein Synthesis 1
AUTOR(ES)
Kang, Bin G.
RESUMO
In the primary leaf sections of etiolated wheat (Triticum aestivum L.) seedlings, red light-induced unrolling is accompanied by an increase in incorporation of 14C-leucine into protein. By differential centrifugation, the unrolling response was found to be closely related to incorporation of the amino acid into the supernatant fraction (105,000g). Cycloheximide and chloramphenicol inhibit both leaf unrolling and synthesis of the supernatant protein, although chloramphenicol exerts its effect more strongly on the fraction which presumably contains the plastids. In a barley (Hordeum vulgare L.) albino mutant completely devoid of ribulose diphosphate carboxylase activity, only incorporation of 14C-leucine into the supernatant fraction is substantially promoted by red light. This mutant exhibits the photoresponse of leaf unrolling.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=365868Documentos Relacionados
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