Recent Advances in the Mode of Action of Diphenyl Ethers and Related Herbicides

Autor:	Jean-Michel Camadro, Pierre Labbe, Michel Matringe, René Scalla
Rok vydání:	1990
Předmět:	Cytochrome synthesis Stereochemistry Chlorophyll synthesis Biology Combinatorial chemistry General Biochemistry Genetics and Molecular Biology
Zdroj:	Zeitschrift für Naturforschung C. 45:503-511
ISSN:	1865-7125 0939-5075
Popis:	Several hypotheses have been proposed to explain the light-dependent phytotoxicity of diphenyl ethers and related herbicides: inhibition of photosynthesis; activation of herbicides by light, by the photosynthetic electron transfer chain or by excited forms of carotenoids; and interaction with the biosynthesis of tetrapyrrole pigments. It is shown that the most likely mode of action consists in inhibiting the enzyme protoporphyrinogen oxidase. As a consequence, protoporphyrinogen is oxidized non-enzymatically to protoporphyrin IX. The latter molecule is a powerful photosensitizer, able to generate singlet oxygen in the light and thus to induce peroxidative destruction of membrane lipids.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::288440097778437b7fa2e3bd4642815e https://doi.org/10.1515/znc-1990-0535 Zobrazit plný text záznamu