Year: 1990
Type: article
Abstract: The mode of action of the furanone herbicide flurtamone and derivatives was investigated with cress seedlings and with the unicellular cyanobacterium Anacystis. Either in the light or in the dark these compounds inhibited the formation of alpha- and beta-carotene and all of the xanthophylls in the seedlings. Instead, phytoene, a precursor of colored carotenoids, was accumulated. In illuminated seedlings photooxidative destruction of chlorophyll was observed. The I(50) value of flurtamone inhibition of carotenoid biosynthesis in intact Anacystis cells and the K(1) value for interaction of flurtamone with phytoene desaturase with Anacystis thylakoids were 30 and 18 nanomoles, respectively. Concentrations of flurtamone which strongly inhibited carotenoid synthesis had no direct peroxidative activities and did not inhibit photosynthetic electron transport.
Source: PLANT PHYSIOLOGY
DOI: 10.1104/pp.94.2.476
Institutions: University of Konstanz, Chevron (United States)
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W1968161513