A Biostimulant Based on Silicon Chelates Enhances Growth and Modulates Physiological Responses of In-Vitro-Derived Strawberry Plants to In Vivo Conditions
Author:
Ambros Elena1ORCID, Kotsupiy Olga1ORCID, Karpova Evgeniya1ORCID, Panova Ulyana1, Chernonosov Alexander2ORCID, Trofimova Elena3, Goldenberg Boris4
Affiliation:
1. Central Siberian Botanical Garden, Siberian Branch of Russian Academy of Sciences, 101 Zolotodolinskaya Str., Novosibirsk 630090, Russia 2. Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, 8 Akad. Lavrentiev Ave., Novosibirsk 630090, Russia 3. Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of Russian Academy of Sciences, 18 Kutateladze Str., Novosibirsk 630128, Russia 4. Synchrotron Radiation Facility Siberian Circular Photon Source, Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, 1 Nikolsky Ave., Koltsovo 630559, Russia
Abstract
The purpose was to assess the effects of a biostimulant based on silicon chelates in terms of alleviation of the impact of in vivo conditions on strawberry (Fragaria × ananassa cv. ‘Solnechnaya polyanka’) in-vitro-derived plants. As a source of silicon chelates, a mechanocomposite (MC) obtained through mechanochemical processing of rice husks and green tea was used. Root treatment of plants with 0.3 g L−1 of MC dissolved in tap water was performed at 2 weeks after planting. Control plants were watered with tap water. The greatest shoot height, number of roots per plant, root length, number of stolons per plant, daughter ramets per stolon, relative water content, cuticle thickness, and root and shoot biomasses were achieved with the MC supplementation. The improved parameters were associated with a higher silicon content of roots and shoots of the MC-treated plants. Leaf concentrations of hydrogen peroxide and abscisic acid were reduced by the MC. This effect was accompanied by enhanced activity of superoxide dismutase and catalase. The phenolic profile showed upregulation of p-hydroxybenzoic acid, vanillic acid, gallic acid, syringic acid, and ellagic acid derivative 2, while kaempferol rutinoside and catechins were downregulated. Thus, silicon chelates improve growth and trigger the physiological processes that enhance free-radical-scavenging activity in strawberry plants in vivo.
Funder
Russian Science Foundation and the Government of the Novosibirsk Region
Subject
Plant Science,Ecology,Ecology, Evolution, Behavior and Systematics
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