Bioactive extracts and association with C and N in Eleutherococcus senticosus subjected to chitosan nanoparticles in contrasting light spectra

Abstract

Bioactive compounds are major reasons for the value of Eleutherococcus senticosus, which can be modified by different lighting spectra. Light-emitting diode (LED) provides lights with specific spectra which can interact with other treatments to impact plant bioactive production. Chitosan nanoparticle (CN) is a biopolymer derived from marine creatures. It’s usage may be a practical approach to cope with uncertainties in secondary metabolites induced by illumination. Carbon (C) and nitrogen (N) cyclings link plant eco-physiological performance and bioactive substance; hence their associations may reveal the mechanism of joint light-CN interaction. In this study, E. senticosus seedlings were raised under artificial lighting spectra from high-pressure sodium (HPS) lamps (44% red, 55% green, 1% blue) and white (44% red, 47% green, 8% blue) and red colored (73% red, 13% green, 14% blue) LED panels. Half of the seedlings received CN and the other half received distilled water as the control. Compared to the HPS spectrum, the red-light induced stronger shoot growth with greater biomass accumulation and higher water uptake but resulted in lower N concentration and biomass ratio in the root. The white light caused more biomass allocated to the root and strengthened stem C concentration. Stem eleutheroside B increased with shoot growth, while root eleutheroside B had a positive association with leaf C and stem protocatechuic acid had a negative association with leaf N. Having the CN treatment in white and red LED lights is recommended for increasing accumulation of bioactive compounds in the shoots and roots of E. senticosus seedlings, respectively.

Natural Bioactive Substances in Fruits of Aronia melanocarpa (Michx.) Elliott Exposed to Combined Light-Type, Chitosan Oligosaccharide, and Spent Mushroom Residue Treatments

“…Transmittance of sunlight for NWFP populations can be adjusted by adjusting canopy gap [ 20 , 21 ], which matters for the yield of bioactive production [ 22 ]. Light quality can be determinative in medicinal or edible uses of NWFPs [ 23 , 24 , 25 ]. Sunlight spectrum can hardly be changed in natural forests [ 12 , 26 , 27 ].…”

“…Light emitting diode (LED) is an instrument that provides artificial illumination for greenhouse plants. It is flexible to change the spectra of LED light by adjusting the composition of wavelengths in red, green, and blue lights [ 19 , 25 , 28 , 29 , 30 ]. The effect of different types of LED spectra on bioactive compounds in NWFP plants is highly species-specific [ 23 , 24 , 31 , 32 ].…”

“…The effect of different types of LED spectra on bioactive compounds in NWFP plants is highly species-specific [ 23 , 24 , 31 , 32 ]. Roots and leaves are alternative sources and sinks to assimilate nutrient and light resources, respectively [ 25 , 33 , 34 ]. Hence, the effect of light spectrum on bioactive compound production is a result of the interaction between light and nitrogen (N) and phosphorus (P) nutrition, but relevant evidence is scarcely testified on NWFP plants in a greenhouse.…”

“…The CO addition can also improve the ability of nutrient uptake and utilization in Buddhist pine [ 29 , 51 ] and fragrant rosewood ( Dalbergia odorifera ) seedlings [ 53 ]. In eleuthero ( Eleutherococcus senticosus ) seedlings, CO addition was found to promote not only fine root growth [ 54 ] as a unique driver, but also bioactive compounds in shoots in combination with LED spectrum [ 25 ]. All these findings together suggest a tendency that CO can be used as a regenerant from marine wastes and an environment-friendly reagent that can induce upregulation of bioactive compounds in more NWFP species.…”

The Studies on Chitosan for Sustainable Development: A Bibliometric Analysis

“…than LED illumination only [ 84 ]. Chitosan nanoparticles with LEDs of different spectra can also modify Eleutherococcus senticosus for the treatment of diseases [ 85 ]. Chitosan-based asymmetric electrodes also have high selectivity and absorption of oxidized hexavalent uranium, strontium cation, and cesium [ 86 ].…”