Mechanism of phytotoxic action of naphthoquinone pigments of the fungus Fusarium decemcellulare

The naphthoquinone pigments of the fungus Fusarium decemcellulare (javanicin, fusarubin, anhydrofusarubin and bostricoidin) induced KCN-insensitive oxidation of NADH and NADPH by mitochondria, microsomes and cytosol of pea seedlings. The reduced pigments produced the superoxide radical (O 2 −) durin...

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Veröffentlicht in:	Phytochemistry (Oxford) 1992, Vol.31 (1), p.77-79
Hauptverfasser:	Medentsev, Alexander G., Akimenko, Vasily K.
Format:	Artikel
Sprache:	eng
Schlagworte:	Agronomy. Soil science and plant productions Biological and medical sciences Fundamental and applied biological sciences. Psychology Fungal plant pathogens fungus Fusarium decemcellulare NAD(P)H oxidation naphthoquinones O 2− formation Pathology, epidemiology, host-fungus relationships. Damages, economic importance Phytopathology. Animal pests. Plant and forest protection phytotoxic action
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Beschreibung
Zusammenfassung:	The naphthoquinone pigments of the fungus Fusarium decemcellulare (javanicin, fusarubin, anhydrofusarubin and bostricoidin) induced KCN-insensitive oxidation of NADH and NADPH by mitochondria, microsomes and cytosol of pea seedlings. The reduced pigments produced the superoxide radical (O 2 −) during their autoxidation. The phytotoxic action of naphthoquinone pigments is suggested to be largely due to the toxicity of O 2 − and H 2O 2 and a decrease in the level of NAD(P)H in the cell
ISSN:	0031-9422 1873-3700
DOI:	10.1016/0031-9422(91)83009-A