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. 2022 Dec 7;12(1):21139.
doi: 10.1038/s41598-022-25749-3.

Physiological responses and antioxidant properties of coriander plants (Coriandrum sativum L.) under different light intensities of red and blue lights

Hsin-Hung Lin #  1 , Kuan-Hung Lin #  2 , Meei-Ju Yang  3 , Hoang Chinh Nguyen  4 , Huei-Ju Wang  5 , Han-Xuang Huang  5 , Meng-Yuan Huang  6
Affiliations

Physiological responses and antioxidant properties of coriander plants (Coriandrum sativum L.) under different light intensities of red and blue lights

Hsin-Hung Lin et al. Sci Rep. .

Abstract

Coriander (Coriandrum sativum L.) contains abundant antioxidants and essential oils which can provide antibacterial, antifungal, and antioxidant activities in the pharmaceutical, health and food production industry. To improve the economic values of coriander, the relationships between optimal light treatments for maximizing both plant growth and the antioxidant and essential oil content of coriander leaves need to be determined. Plants were exposed to five light-emitting diodes spectral color mixtures, high blue light (BL) intensity induced the levels of reducing power response. The light treatments were then adjusted for the analysis of secondary metabolite compounds of coriander leaves. Among 30 identified compounds, the amounts of decamethyl-cyclopentasiloxane and dodecane were significantly reduced in the R80 + G50 + B50 condition, whereas dodecamethyl-cyclohexasiloxane level was significantly reduced in R50 + G50 + B80 condition. Various light quality and intensity combinations influenced the accumulations of chlorophyll and phytochemical contents, mediated antioxidative properties, and secondary metabolites of coriander leaves, which may be useful in developing a new LED lighting apparatus optimized for coriander production in plant factories.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Figure 1
Figure 1
Effects of LED light quality (RL, GL, and BL) and intensity (0, 50, and 200 µmol m−2 s−1 photosynthetic photon flux density) treatments on plant height (panels A, D), leaf area (panels B, E), and shoot fresh weight (panels C, F) of coriander plants at 45 days after sowing. There are five light quality treatments consisting of red light (RL), green light (GL), and blue light (BL) LED with different mixtures. The light treatments associated with the plant growth measurements presented from left to right were no RL (G50 + B50), control (R50 + G50 + B50), high RL (R200 + G50 + B50), no BL (R50 + G50), control (R50 + G50 + B50), and high BL (R50 + G50 + B200) treatments, respectively. Treatments were arranged in a completely randomized design with 3 replicates, and 10 plants from each light quality and intensity treatment were used for the plant growth measurements. Vertical bars indicate the standard deviation. The values followed by a different letter show statistically significant differences at p < 0.05 (n = 10).
Figure 2
Figure 2
Effects of LED light quality (RL, GL, and BL) and intensity (0, 50, and 200 µmol m−2 s−1 photosynthetic photon flux density) treatments on chlorophyll a (panels A, D), chlorophyll b (panels B, E), and chlorophyll a + b (panels C, F) of coriander plants at 45 days after sowing. There are five light quality treatments consisting of red light (RL), green light (GL), and blue light (BL) LED with different mixtures. The light treatments associated with the plant chlorophyll measurements presented from left to right were no RL (G50 + B50), control (R50 + G50 + B50), high RL (R200 + G50 + B50), no BL (R50 + G50), control (R50 + G50 + B50), and high BL (R50 + G50 + B200) treatments, respectively. Treatments were arranged in a completely randomized design with 3 replicates, and 10 plants from each light quality and intensity treatment were used for the plant chlorophyll measurements. Vertical bars indicate the standard deviation. The values followed by a different letter show statistically significant differences at p < 0.05 (n = 10).
Figure 3
Figure 3
Effects of LED light quality (RL, GL, and BL) and intensity (0, 50, and 200 µmol m−2 s−1 photosynthetic photon flux density) treatments on carotenoid (panels A, C), and anthocyanin (panels B, D) of coriander plants at 45 days after sowing. There are five light quality treatments consisting of red light (RL), green light (GL), and blue light (BL) LED with different mixtures. The light treatments associated with the plant phytochemical measurements presented from left to right were no RL (G50 + B50), control (R50 + G50 + B50), high RL (R200 + G50 + B50), no BL (R50 + G50), control (R50 + G50 + B50), and high BL (R50 + G50 + B200) treatments, respectively. Treatments were arranged in a completely randomized design with 3 replicates, and 10 plants from each light quality and intensity treatment were used for the plant phytochemical measurements. Vertical bars indicate the standard deviation. The values followed by a different letter show statistically significant differences at p < 0.05 (n = 10).
Figure 4
Figure 4
Effects of LED light quality (RL, GL, and BL) and intensity (0, 50, and 200 µmol m−2 s−1 photosynthetic photon flux density) treatments on flavonoid (panels A, C), and phenolic acid (panels B, D) of coriander plants at 45 days after sowing. There are five light quality treatments consisting of red light (RL), green light (GL), and blue light (BL) LED with different mixtures. Light treatments associated with the antioxidant measurements presented from left to right were no RL (G50 + B50), control (R50 + G50 + B50), high RL (R200 + G50 + B50), no BL (R50 + G50), control (R50 + G50 + B50), and high BL (R50 + G50 + B200) treatments, respectively. Treatments were arranged in a completely randomized design with 3 replicates, and 10 plants from each light quality and intensity treatment were used for the plant antioxidant measurements. Vertical bars indicate the standard deviation. The values followed by a different letter show statistically significant differences at p < 0.05 (n = 10).
Figure 5
Figure 5
Effects of LED light quality (RL, GL, and BL) and intensity (0, 50, and 200 µmol m−2 s−1 photosynthetic photon flux density) treatments on DPPH scavenging effect (panels A, C), and reducing power (panels B, D) of coriander plants at 45 days after sowing. There are five light quality treatments consisting of red light (RL), green light (GL), and blue light (BL) LED with different mixtures. The light treatments associated with the plant antioxidant capacity measurements presented from left to right were no RL (G50 + B50), control (R50 + G50 + B50), high RL (R200 + G50 + B50), no BL (R50 + G50), control (R50 + G50 + B50), and high BL (R50 + G50 + B200) treatments, respectively. Treatments were arranged in a completely randomized design with 3 replicates, and 10 plants from each light quality and intensity treatment were used for the plant antioxidant capacity measurements. Vertical bars indicate the standard deviation. The values followed by a different letter show statistically significant differences at p < 0.05 (n = 10).
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