The effect of amaranthine on the stress-resistance of tomatoes (Lycopersicon esculentum Mill.) invaded by the root-knot nematode (Meloidogyne incognita)

Root-knot nematodes of the genus Meloidogyne are sedentary parasites that infect the root system of plants, the annual damage from which in the world exceeds 80 billion EUR per year. Infection of plants with these nematodes causes biogenic stress, which is associated with changes in the respiratory processes of plants, a decrease in photosynthesis, the appearance of highly reactive oxygen radicals in the tissues with the formation of toxic intermediate products that cause oxidative stress. The high biological activity of amaranthine isolated from Amarathus tricolor L. combined with antioxidant properties, show the promise of its study as a factor resistance to stress of plant during invasion by parasitic nematodes. In this work, we first showed the adaptogenic properties of amaranthine towards tomato plants infected with root-knot nematode. We investigated the effect of the amaranthine beta-cyanine pigment extracted from A. tricolor on the parasite-host system of the tomato Lycopersicon esculentum Mill...