ABSCISSION: INDUCTION OF DEGRADATIVE ENZYMES DURING AGING

Abstract

Loss of weight, chlorophyll, RNA, and protein from pulvinal tissue of Phaseolus vulgaris L. var. Red Kidney petiole explants was inhibited by actinomycin D or cycloheximide. The loss of RNA was correlated with the induction of ribonuclease. Concentrations of auxin, cytokinins, coumarin, actinomycin D, or cycloheximide sufficient to maintain levels of RNA in pulvinal tissue inhibited the induction of ribonuclease. Evidence is presented that lysosomes are not the source of ribonuclease. Abscission retardants are probably aging retardants, and the loss of metabolites from the pulvinus and induction of cell separation by ethylene are a part of the aging phenomenon.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1967
Accession Number
AD0821060

Entities

People

  • Frederick B. Abeles
  • Harry E. Gahagan Iii
  • Robert E. Holm

Tags

DTIC Thesaurus Topics

  • Alcohols
  • Alkenes
  • Cells
  • Chlorophylls
  • Coumarins
  • Enzymes
  • Ethylenes
  • Growth Substances
  • Lysosomes
  • Metabolites
  • Particulates
  • Plant Tissue
  • Plants
  • Ribonuclease
  • Ribonucleic Acids
  • United States
  • Vegetables

Readers

  • Aquatic Ecology
  • Molecular and Cellular Biochemistry