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

Influence of nanocompositions based on light fullerene derivatives on cultural plants under favorable and stress conditions of their habitat

“…According the change in activity of peroxydase, catalase, superoxide dismutase involved in oxidation-reduction reactions in plant cells and tissues, and lipid peroxidation intensity, reactive oxygen intermediate content in plants treated with solutions of fullerene C 60 derivatives and nanocompositions thereof, stabilization of antioxidant systems of plants is observed and is more vividly manifested in oxidative stress conditions caused by UV-B irradiation, soil moisture deficit, manganese, zinc and other trace elements content deficit in rootinhabited environments, etc. [25][26][27][28]. Thus, Leningradskiy 6 soft spring wheat exposed to foliar treatment with nanocomposition solutions based on aminoacid derivative of C 60 with threonine during tillering-shooting and then to two-week water stress shows that variation amplitude of oxidationreduction superoxide dismutase activity, lipid peroxidation intensity and, therefore, development of oxidative stress in them is significantly lower compared with that observed in control plants and treated with threonine solution in soil moisture deficit options (Figure 3).…”

“…Preliminary laboratory and vegetation experiments before the main set of research detected, by test plant response, the concentration ranges of fullerene derivatives with positive, neutral and inhibitory action (seed or vegetative plant treatment) which were used to choose minimum positive-action concentrations of fullerene derivatives to be introduced into the root-inhabited environment and plant seed treatment for further investigation of test substance impacts on plants: 0.1, 1.0 and 10.0−15.0 mg/l and 0.1 mg/l for tris malonate fullerene C 60 , aminoacid derivatives of fullerene C 60 and fullerenol C 60 , respectively; for foliar treatment of vegetative plants -0.01, 0.1 and 1.0−15.0 mg/l [21,[25][26][27][28].…”

“…We have already discussed the ability of fullerene derivatives and nancompositions thereof to influence directly or indirectly antioxidant properties of plants and to bind free radicals in plant cells [21,25,26,28]. Thus, we demonstrated that when root tips preliminary treated with the specified derivatives of fullerene C 60 were exposed to UV-B irradiation (0.5 W/m 2 , 15 min), their ability to reduce formation of free radicals and inhibit development of oxidative stress in plant root cells is pronounced [21,25,26].…”

“…The research was carried out at the biological sites of the Agrophysical Research Institute in controlled natural conditions and in the VIR greenhouses. For plants cultivation at the Agrophysical Research Institute biological site in controlled microclimate conditions, original vegetation light system (VLS) prototypes were used [25,26,28].…”

“…We know very little if nothing about the mechanisms of potential indirect influence of fullerene derivatives on plants after penetration soil. We were the first to show that increase in net production of plants and their resistance to oxidative stress after introduction of polyhydroxylated, carboxylated and aminoacid derivatives of C 60 in the root-inhabited environment or after foliar treatment of plants is evidently associated with the determined changes in the structure and efficiency of photosynthetic system and with the influence on the metabolic, substance exchange processes in plants, antioxidant protections systems, in particular on lipid peroxidation intensity, superoxide dismutase activity and reactive oxygen intermediate generation [21,[25][26][27][28].…”