The mechanism of linuron phytotoxicity in maize

GY MUSCHINEK, G. Garab, L. Mustárdy, FALUDI‐DÁNIEL

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The mechanism whereby Iinuron changes the functional and structural characteristics of chloroplast membranes was studied. The primary effect of the herbicide, the inhibition of phoiosynihetic electron transport results in an immuediatecessa‐tion of carbon dioxide fixation and alterations in the membrane energization. These are accompanied by secondary processes contributing to phytotoxicity. The fundamental action in its phytotoxicity, as shown in a model system of isolated chloro‐plasts, is the peroxidaiive breakdown of the polyunsaturated membrane lipids. This leads to destruction of the pigments, changes in the energy transfer, disorganization of the chloro‐plast membranes, and accumulation of toxic organic peroxides.

Original languageEnglish
Pages (from-to)101-107
Number of pages7
JournalWeed Research
Volume19
Issue number2
DOIs
Publication statusPublished - 1979

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Agronomy and Crop Science
  • Plant Science

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