Effects of light emitting diode irradiation at night on abscisic acid metabolism and anthocyanin synthesis in grapes in different growing seasons

Abstract

The effects of red-and blue-light irradiation at night on abscisic acid (ABA) synthesis and anthocyanin and sugar concentrations were examined in grape vines, which were grown in two different seasons. In grapes cultivated with early heating, the ABA concentrations were highest in blue-light-emitting diode (LED)-treated skin; however, those in grapes cultivated in the ordinary growing season were highest in red-LED-treated skin. The expressions of 9-cis-epoxycarotenoid dioxygenase (VvNCED1) and ABA 8 0 -hydroxylase (VvCYP707A1) were high in each treatment at veraison regardless of the growing season. In both seasons, anthocyanin concentrations were highest under the blue-LED treatment, followed by the red-LED treatment. The expressions of VlMYBA1-2, VlMYBA2, and VvUFGT coincided with anthocyanin concentrations. Sugar concentrations were increased by the blue-or red-LED treatment dependent on the growing season. The results suggest that blue-or red-LED irradiation at night may influence the ABA and anthocyanin metabolism including VvNCED1, VlMYBA1-2, and VlMYBA2 and sugar synthesis in grape berries, although the degree of the effects differs with the growing season.

Application of Light-Emitting Diodes for Improving the Nutritional Quality and Bioactive Compound Levels of Some Crops and Medicinal Plants

“…Numerous previous studies have reported the key role of LEDs in flavonoid biosynthesis in plants. Blue LED irradiation increased anthocyanin concentration in grapes [ 90 ]. Upregulation of the expression of VIMYBA1-2, VIMYBA2, and VvUFGT genes, which are associated with anthocyanin biosynthesis, was also observed.…”

“…Moreover, irradiation of grapes with both blue and red LEDs upregulated the expression of anthocyanin biosynthesis-related genes, such as MYB transcription factor genes [ 97 ]. In another study, the expression of anthocyanin synthesis-related genes, including V1MYBA1-2 , VIMYBA2 , and VvUFGT , was increased with the enhancement in anthocyanin accumulation in grape berries irradiated with blue LEDs [ 90 ].…”

Effect of Light-Emitting Diodes (LEDs) on the Quality of Fruits and Vegetables During Postharvest Period: a Review

“…LEDs are a solid-state (i.e., semiconductor-based) system that converts electrical energy to electromagnetic radiation (D'Souza et al 2015;Schultz et al 2008), typically in the infrared or visible regimes (Rodyoung et al 2016), and occasionally in ultraviolet regimes (Bantis et al 2018;Dou et al 2017;Krames et al 2007). A depiction of a LED system is shown in (Fig.…”

“…Recently, greater emphasis has been paid to the influence of LEDs (narrow-bandwidth illumination) on the postharvest storage of fresh horticultural produce. Recent research has shown that LEDs enhance the traits of numerous postharvest fresh produce, including lettuce, cabbage, kale plants, white mustard, sweet pepper, cucumber and blueberries (Hung et al 2016), peaches (Gong et al 2015), strawberries (Xu et al 2014a(Xu et al , 2014b, tomatoes (Dhakal and Baek 2014), citrus fruits (Ma et al 2012), Chinese bayberries , Spinach and kale (Erwin and Gesick 2017), and grapes (Rodyoung et al 2016).…”

Optimization of Artificial Light for Spinach Growth in Plant Factory Based on Orthogonal Test

“…Among various artificial light sources, light-emitting diode (LED) is the most promising in the field of plant lighting. It is proven to be able to influence the growth and reproduction of plants by adjusting the light quality, light intensity, and photoperiod [1][2][3]. It has been shown that blue and red LED illumination is effective in the growth of basil microgreens [4].…”