Light emitting diode effect of red, blue, and amber light on photosynthesis and plant growth parameters.

Autor: Wu BS; Department of Bioresource Engineering, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, H9X 3V9, Quebec, Canada., Mansoori M; Department of Bioresource Engineering, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, H9X 3V9, Quebec, Canada., Schwalb M; Department of Bioresource Engineering, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, H9X 3V9, Quebec, Canada., Islam S; Department of Bioresource Engineering, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, H9X 3V9, Quebec, Canada., Naznin MT; Department of Agriculture, Veterinary and Rangeland Sciences, College of Agriculture, Biotechnology and Natural Resources. University of Nevada, Reno. UNR Extension, 2280 N McDaniel St, N, Las Vegas, NV 89030, USA., Addo PW; Department of Bioresource Engineering, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, H9X 3V9, Quebec, Canada., MacPherson S; Department of Bioresource Engineering, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, H9X 3V9, Quebec, Canada., Orsat V; Department of Bioresource Engineering, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, H9X 3V9, Quebec, Canada., Lefsrud M; Department of Bioresource Engineering, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, H9X 3V9, Quebec, Canada. Electronic address: mark.lefsrud@mcgill.ca.
Jazyk: angličtina
Zdroj: Journal of photochemistry and photobiology. B, Biology [J Photochem Photobiol B] 2024 Jul; Vol. 256, pp. 112939. Date of Electronic Publication: 2024 May 09.
DOI: 10.1016/j.jphotobiol.2024.112939
Abstrakt: The visible light spectrum (400-700 nm) powers plant photosynthesis and innumerable other biological processes. Photosynthesis curves plotted by pioneering photobiologists show that amber light (590-620 nm) induces the highest photosynthetic rates in this spectrum. Yet, both red and blue light are viewed superior in their influence over plant growth. Here we report two approaches for quantifying how light wavelength photosynthesis and plant growth using light emitting diodes (LEDs). Resolved quantum yield spectra of tomato and lettuce plants resemble those acquired earlier, showing high quantum utilization efficiencies in the 420-430 nm and 590-620 nm regions. Tomato plants grown under blue (445 nm), amber (595 nm), red (635 nm), and combined red-blue-amber light for 14 days show that amber light yields higher fresh and dry mass, by at least 20%. Principle component analysis shows that amber light has a more pronounced and direct effect on fresh mass, whereas red light has a major effect on dry mass. These data clarify amber light's primary role in photosynthesis and suggest that bandwidth determines plant growth and productivity under sole amber lighting. Findings set precedence for future work aimed at maximizing plant productivity, with widespread implications for controlled environment agriculture.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Crown Copyright © 2024. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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