School of Agriculture, São Paulo State University, Botucatu, Brazil.
Campus of Registro, São Paulo State University, Registro, Brazil.
Sci Rep. 2021 Nov 11;11(1):22064. doi: 10.1038/s41598-021-01647-y.
Passiflora incarnata L. is a species of global pharmacological importance, has not been fully studied in the context of cultivation and management. It is known that silicon acts on abiotic stress and promotes phenols synthesis. The practice of mechanical damage is widely used in P. incarnata crops, and its interaction with silicon can have a significant influence on plant metabolism. Therefore, our objective was to investigate the effects of silicon and mechanical damage on photosynthesis, polyphenols and vitexin of P. incarnata. The experiment was conducted in a factorial design with SiO concentrations (0, 1, 2, 3 mM) and presence or absence of mechanical damage. It was found that mechanical damage improved photosynthetic performance at lower concentrations or absence of silicon. Moreover, this condition promoted an increasing in vitexin concentration when SiO was not provided. The application of 3 mM Si is recommended to increase polyphenols and vitexin, without harming dry mass of aerial part. The interaction between silicon and mechanical damage could be a tool to increase agronomic yield and commercial value of the P. incarnata crop.
穿心莲 L. 是一种具有全球药理重要性的物种，但在栽培和管理方面尚未得到充分研究。已知硅对非生物胁迫起作用，并促进酚类物质的合成。机械损伤的实践在穿心莲作物中广泛应用，其与硅的相互作用对植物代谢有重大影响。因此，我们的目的是研究硅和机械损伤对穿心莲光合作用、多酚和牡荆素的影响。该实验采用 SiO 浓度（0、1、2、3 mM）和有无机械损伤的因子设计进行。结果发现，在较低浓度或缺乏硅的情况下，机械损伤可改善光合作用性能。此外，当不提供 SiO 时，这种条件会促进牡荆素浓度的增加。建议应用 3 mM Si 来增加多酚和牡荆素，而不会损害地上部分的干质量。硅和机械损伤的相互作用可能是提高穿心莲作物农业产量和商业价值的一种工具。
