Foliar Application of Selenium Nanoparticles on Celery Stimulates Several Nutrient Component Levels by Regulating the α-Linolenic Acid Pathway

Abstract

Selenium nanoparticles (SeNPs) show potential tendency in improving the plant health and food quality. However, the mechanism underlying SeNPs' capability to enhance the biosynthesis of more nutrient components such as flavonoids in crops remains unclear. In this study, it is found that foliar application of SeNPs on celery significantly enhanced the total antioxidant capacity, total flavonoids, total phenols, and vitamin C levels of celery leaves by 46.7, 50.0, 21.4, and 26.7%, respectively. The SeNP application enhanced the biosynthesis of flavonoids, such as apigenin (58.4%), rutin (66.2%), p-coumaric acid (80.4%), ferulic acid (68.2%), luteolin (87.0%), and kaempferol (105.7%). The levels of nutrients such as arginine, tryptophan, and βcarotenes also increased by 147.8, 91.5, and 61.4%, respectively. For other components, the α-linolenic acid (73.8%), 13(S)-hydroxy linolenic acid (65.0%), 12-oxophytodienoic acid (197.5%), and jasmonic acid (72.9%) levels increased in SeNP-treated celery leaves. In conclusion, it was proposed that the mechanism of SeNPs for stimulating nutrient component levels might enhance the antioxidant capacity by regulating the α-linolenic acid pathway, leading to greater biotransformations or accumulation of various nutrients in celery.

Nanoparticles as Novel Elicitors to Improve Bioactive Compounds in Plants

“…Recently, polyphenols have received the attention of scientists and consumers, due to their potential medicinal properties in the prevention and cure of various degenerative diseases, particularly cancers, cardiovascular diseases and neurodegenerative diseases [81]. Li et al [76] found that foliar application of 5 mg/L of selenium (Se) NPs in celery enhanced the total antioxidant capacity (46.7%), total flavonoids (50%), such as apigenin, p-coumaric acid, ferulic acid, luteolin and kaempferol, total phenols (21.4%) and vitamin C (26.7%). Furthermore, a synergistic effect between NPs and other types of compounds has been demonstrated.…”

Nanoselenium transformation and inhibition of cadmium accumulation by regulating the lignin biosynthetic pathway and plant hormone signal transduction in pepper plants

“…Se (0, 0.2, and 1 mg/L) and Cd (0 and 1 mg/L) were added to the vessel in form of Cd 2+ in water/medium: 5% nitric acid (1000 mg/L) and nano-Se. The nano-Se was characterized as previously described [ 21 ]. The experiment was established with five repetitions of the six treatments that included Cd0Se0, Cd0Se0.2, Cd0Se1, Cd1Se0, Cd1Se0.2, and Cd1Se1.…”

GhPLP2 Positively Regulates Cotton Resistance to Verticillium Wilt by Modulating Fatty Acid Accumulation and Jasmonic Acid Signaling Pathway

“…Four-week-old Arabidopsis and 2-week GhPLP2 -silenced cotton plants after VIGS were used to analyze the composition of fatty acids and quantify the hormones. The hormones were quantified as previously described ( Li D. et al, 2020 ). Fresh samples were ground into fine powder in liquid nitrogen.…”

“…MS was performed using the multiple reaction monitoring modes and negative electrospray ionization. All the parameters were performed as described by Li D. et al (2020) .…”