Inhibition of RNA Synthesis and Auxin-Induced Cell
نویسندگان
چکیده
SummDnzary. 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 tunstable cell constittuents, presumably enzymes, are essential for cell wall loosening induced by auxin as well as for cell elongation.
منابع مشابه
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...
متن کاملInhibition of formation of protein-bound hydroxyproline by free hydroxyproline in Avena coleoptiles.
Free hydroxyproline inhibits the formation of protein-bound hydroxyproline from proline to a considerably greater extent than it does the incorporation of proline into protein of auxin-treated Avena coleoptiles. This inhibition is greater in the wall than in the cytoplasmic fraction. In the absence of auxin, free hydroxyproline exerts little or no inhibition of hydroxyproline formation. Further...
متن کاملSenescence: Action of Auxin and Kinetin in Control of RNA and Protein Synthesis in Subcellular Fractions of Bean Endocarpl
Sionnnary. A comiparative study was made of the efffects of auxin (a-naphthalene acetic acid), kinetin (6-furfurylaminopurine) and a mixture of auxin and kinetin applied in vivo on synthesis okf RNA and protein and the distribution of such synthesis am'ongst the subcellular fractions of sections of endocarp from Kentucky Wonder pole beans (Phascolus vulgaris, L.). Auxin caused considerable enha...
متن کاملSenescence: action of auxin and kinetin in control of RNA and protein synthesis in subcellular fractions of bean endocarp.
A comparative study was made of the effects of auxin (alpha-naphthalene acetic acid), kinetin (6-furfurylaminopurine) and a mixture of auxin and kinetin applied in vivo on synthesis of RNA and protein and the distribution of such synthesis amongst the subcellular fractions of sections of endocarp from Kentucky Wonder pole beans (Phaseolus vulgaris, L.). Auxin caused considerable enhancement of ...
متن کاملAction of inhibitors of RNA and protein synthesis on cell enlargement.
Further studies with inhibitors of protein synthesis are presented to support the conclusion, drawn from work with chloramphenicol, that protein synthesis is a critical limiting factor in auxin-induced cell expansion. The indoleacetic acid-induced elongation of oat coleoptile sections was strongly inhibited by dl-p-fluorophenylalanine, and the inhibition is antagonized by phenylalanine. Puromyc...
متن کامل