Ambros Elena, Kotsupiy Olga, Karpova Evgeniya, Panova Ulyana, Chernonosov Alexander, Trofimova Elena, Goldenberg Boris
Central Siberian Botanical Garden, Siberian Branch of Russian Academy of Sciences, 101 Zolotodolinskaya Str., Novosibirsk 630090, Russia.
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, 8 Akad. Lavrentiev Ave., Novosibirsk 630090, Russia.
Plants (Basel). 2023 Dec 18;12(24):4193. doi: 10.3390/plants12244193.
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 ( × 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 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 -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.
目的是评估基于硅螯合物的生物刺激剂在减轻体内条件对草莓（× cv. 'Solnechnaya polyanka'）离体衍生植株影响方面的作用。作为硅螯合物的来源，使用了通过稻壳和绿茶的机械化学处理获得的机械复合材料（MC）。种植后2周，用溶解于自来水中的0.3 g/L MC对植株进行根部处理。对照植株浇灌自来水。补充MC后，植株的茎高、单株根数、根长、单株匍匐茎数、每个匍匐茎的子分株数、相对含水量、角质层厚度以及根和茎生物量均达到最大值。这些改善的参数与MC处理植株的根和茎中较高的硅含量相关。MC降低了叶片中过氧化氢和脱落酸的浓度。这种效果伴随着超氧化物歧化酶和过氧化氢酶活性的增强。酚类物质谱显示，对羟基苯甲酸、香草酸、没食子酸、丁香酸和鞣花酸衍生物2上调，而山奈酚芸香糖苷和儿茶素下调。因此，硅螯合物可改善草莓植株的生长并触发增强体内自由基清除活性的生理过程。
