Irradiance from Distinct Wavelength Light-emitting Diodes Affect Secondary Metabolites in Kale
By Mark Lefsrud, D. Kopsell, C. Sams. 2008
193 citations recorded by the source corpus.
The use of light-emitting diodes (LEDs) for plant production is a new field of research that has great promise to optimize wavelength-specific lighting systems for precise management of plant physiological responses and important secondary metabolite production. In our experiment, hydroponically cultured kale plants (Brassica oleracea L. var. acephala D.C.) were grown under specific LED wavelength treatments of 730, 640, 525, 440, and 400 nm to determine changes in the accumulation of chlorophylls, carotenoids, and glucosinolates. Maximum accumulation, on a fresh mass basis, of chlorophyll a and b and lutein occurred at the wavelength of 640 nm, whereas β-carotene accumulation peaked under the 440-nm treatment. However, when lutein was measured on a dry mass basis, maximum accumulation was shifted to 440 nm. Sinigrin was the only glucosinolate to respond to wavelength treatments. Wavelength control using LED technology can affect the production of secondary metabolites such as carotenoids and glucosinolates with irradiance levels also a factor in kale. Management of irradiance and wavelength may hold promise to maximize nutritional potential of vegetable crops grown in controlled environments.
Subfields: Biochemistry, Molecular Biology, Plant Science
View Paper: https://www.semanticscholar.org/paper/02a9b51c8fef41a65775c05847bc8a7aecad67e4
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In Plant Science
Citations in the corpus
- Effects of Different Light Sources on the Growth of Non-heading Chinese Cabbage (Brassica campestris L.) (2012, unknown): “…their potential to be implemented in dynamic lighting strategies to control plant growth, development, physiological responses and production, it is important to learn more about the influence of light quality on these processes (Folta and Childers, 2008; Lefsrud et al., 2008; Massa et al., 2008).”
- LEDs for Energy Efficient Greenhouse Lighting (2014, background): “Similar experiments have shown increased nutritional value and enhanced antioxidant status in green vegetables: increased carotenoid [36], vitamin C [32], anthocyanin [30] and”
- The effects of red, blue, and white light-emitting diodes on the growth, development, and edible quality of hydroponically grown lettuce (Lactuca sativa L. var. capitata) (2013, background): “…results rom experiments conducted under inconsistent light parameters. hile it is widely understood that light intensity can positively ffect photochemical accumulation (Li and Kubota, 2009; Fu et al., 012), the effects of light quality are more complex, and mixed esults were often reported.”
- The effects of light-emitting diode lighting on greenhouse plant growth and quality (2013, background): “Lefsrud et al. 2008 Blue (468 nm) LEDs alone or in combination with red (655 nm) LEDs.”