Photoregulation of Bioprotectant Content of Red Leaf Lettuce with Light-emitting Diodes

By G. Stutte, S. Edney. 2009

239 citations recorded by the source corpus.

Lactuca sativa cv. Outredgeous was grown under either fluorescent lamps or light-emitting diodes (LEDs) to test the hypothesis that antioxidant potential could be regulated by light quality. Red leaf lettuce was grown at 300 mmolm -2 s -1 of photosyn- thetically active radiation, 1200 mmolmol -1 CO2 ,2 38C, and an 18 h-light /6-h dark photoperiod in controlled-environment chambers. The LED treatments were selected to provide different amounts of red (640 nm), blue (440 nm), green (530 nm), and far-red (730 nm) light in the spectra. Total anthocyanin content and the oxygen radical absorbance capacity of the tissue were measured at harvest. The source of light had a dramatic effect on both plant growth and production of radioprotective compounds. LEDs resulted in 50% greater bioprotectant content per plant at the same light level over triphosphor fluorescent lamps. Blue LEDs (440 nm) appeared to regulate the metabolic pathways leading to increased concentration of bioprotective compounds in leaf tissue. LED lighting induced a number of effects on morphology that increased both accumulation of bioprotective compounds and total yield.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/ca76a1f916cfabd3cb18b8fd34fc35bef21022f4

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In Plant Science

1. M. Olle
2. A. Viršilė
3. G. Stutte

Citations in the corpus

• Effects of LED light on the production of strawberry during cultivation in a plastic greenhouse and in a growth chamber (2015, result): “In agreement with our observations, other researchers have demonstrated that a combination of blue and red LED light was the most successful in raising the content of anthocyanins in red lettuce (Stutte et al., 2009).”
• The effects of light-emitting diode lighting on greenhouse plant growth and quality (2013, background): “However, when applied in combination with red LEDs (Stutte et al. 2009) or cool white fluorescent light (Li and Kubota 2009) far red LEDs had pronounced effect on lettuce growth characteristics: increased biomass, leaf length but negatively affected chlorophyll, anthocyanin and carotenoids concentra”
• LEDs for Energy Efficient Greenhouse Lighting (2014, background): “Several horticultural experiments with potato, radish [29] and lettuce [30] have shown the requirement of blue (400-500 nm) light for higher biomass and leaf area.”
• Light-emitting Diodes for Manipulating the Phytochrome Apparatus (2009, background): “…TPF lamp (F = 0.66) and red (660 nm) plus far red (730 nm) (F = 0.53) as controls because previous research had indicated that anthocyanin production was high under TPF (Richards et al., 2004; Stutte et al., 2009) and that the red/far red treatment had low anthocyanin content (Stutte et al., 2009).”
• Effects of Different Light Sources on the Growth of Non-heading Chinese Cabbage (Brassica campestris L.) (2012, unknown): “…(Bula et al., 1991; Hoenecke et al., 1992; Yanagi et al., 1996; Okamoto et al., 1997; Yorio et al., 2001; Kim et al., 2004; Kim et al., 2006; Stutte et al., 2009; Li and Kubota, 2009), cucumber (Menard et al., 2006; Brazaityte et al., 2009), pepper (Brown et al., 1995; Schuerger et al.,…”