Inhibition of RNA synthesis and auxin-induced cell wall extensibility and growth by Actinomycin D.
A linear stress strain analyzer was used to determine the effects of inhibitors of RNA and protein synthesis on auxin-induced increases in cell wall extensibility. With etiolated soybean hypocotyl, maize mesocotyl and Avena coleoptile sections and light-grown pea internode sections, inhibition of RNA synthesis resulted in inhibition of auxin-induced extensibility changes and cell expansion. The results with both actinomycin D and cycloheximide support an earlier conclusion that unstable cell constituents, presumably enzymes, are essential for cell wall loosening induced by auxin as well as for cell elongation.
D002473:Cell Wall; D003609:Dactinomycin / Q000494:pharmacology*; D010937:Plant Growth Regulators / Q000494:pharmacology*; D010944:Plants / Q000201:enzymology*; D012313:RNA / Q000096:biosynthesis*
D010937:Plant Growth Regulators; D003609:Dactinomycin; D012313:RNA