Plant impact properties of carboxylated fullerene C60[C(COOH)2]3

Carboxylated light fullerenes, in particular, tris-malonate of fullerene C-60 (C-60[C(COOH)(2)](3), CF), is of great interest for studying its effect on plants, primarily as a source of malonate, a substance with high bi-ological activity, and possible means of improving crop yield and its quality. Impact of water-soluble carboxylated light fullerene derivatives on physiological plant state is not studied enough. The present paper is devoted to the study of the carboxylated fullerene C-60[C(COOH)(2)](3) influence on the physiological state, growth and netto productivity of salad, tomatoes, spring barley, and wheat in the initial stages of seed germination and in the vegetative period of plants development due to the following reasons: an in-crease in the absorption and assimilation capacity of roots and aerial parts of plants; increased absorption of moisture by plants, and other substances in the plant aerial organs; the entering into the plants and distributing C-60[C(COOH)(2)](3) in the organs, containing physiologically active organic compounds, poten-tially involved in cyclic processes of plants catabolism; optimising the antioxidant system function. Our study shows that, according to the complex of estimated indicators of seed response and seedling condi-tion, the C-60[C(COOH)(2)](3) solutions in the concentration range C-CF = 0.001-0.1 mg.dm(-3) have a positive effect on test plants. (C) 2021 Published by Elsevier B.V.