Innovative investigation of the influence of SkQ1 on calli regeneration and programmed tissue death in potato and other agricultural plants
2008
Dolgikh, Yu. I. | Stepanova, A.Yu., Russian Academy of Sciences, Moscow (Russian Federation). The K.A. Timiryazev Institute of Plant Physiology | Chichkova, N.V. | Soloviev, A.G. | Zamyatnin, A.A. | Vartapetyan, A.B. | Morozov, S.Yu., Lomonosov Moscow State Univ. (Russian Federation)
Reactive oxygen species (ROS) are believed to play an important role in plant apoptosis (programmed cell death) and plant ontogenesis in general. It was proposed that mitochondria-targeted compounds of SkQ family having antioxidant activity may suppress the increase of ROS level and thus behave as biologically active molecules in plants. To verify this suggestion, we undertook special innovative work. Despite the fact that initiation of somatic embryogenesis and embryo morphogenesis are regulated differently in diverse plant systems, SkQ1 efficiently stimulated regeneration of embryogenic calli in different monocots and dicots including potato. This argue that SkQ had universal activity in many plants and it can be recommended for morphogenesis stimulation in quite different plant species. It was also shown that the process of programmed tissue death in tobacco leaves initiated by agroinfiltration with bacteria coding for proapop-totic protein can be suppressed by very low concentrations of SkQ1. Moreover, SkQ1 at 0.1 10E-9 M concentration influenced preservation time for rose flowers that can be explained by suppression of apoptosis. Additionally, SkQ1 had additive positive effect on the activity of commercial preparation Chrysal commonly used for preservation of decorative flowers.
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