| Abstract [eng] |
Naphthoquinones are widely distributed in plants, fungi, and some animals. Their biological activities have been studied, including their effects on prokaryotic and eukaryotic cells. Vitamin K is a derivative of 1,4-naphthoquinone. Other natural naphtoquinones include juglone, plumbagin, droserone. Naphthoquinone derivatives exhibit important pharmacological properties: they are cytotoxic, have a significant antibacterial, antifungal, antiviral, insecticidal, anti-inflammatory and antipyretic properties. Menadione sodium bisulphite (MSB) increased the growth of tomato plants and alfalfa callus and stimulated the rooting of mungbean cuttings. The IAA levels were increased by about 3- to 4-fold following the application of MSB to tomato, cucumber, corn and capsicum plants. Plumbagone, juglone and lawsone are naturally occurring naphthoquinones of plant origin, which have antibacterial effects on several species of both aerobic and anaerobic organisms, and toxins derived from naphthazarin (5,8-dihydroxy-1,4-naphthoquinone) are produced by Fusarium solani and attack plants, other fungi and bacteria. [...]. |
