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Cited 19 time in webofscience Cited 32 time in scopus
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Light Emitting Diodes (LEDs) as Agricultural Lighting: Impact and Its Potential on Improving Physiology, Flowering, and Secondary Metabolites of Cropsopen access

Authors
Al Murad, MusaRazi, KaukabJeong, Byoung RyongSamy, Prakash Muthu ArjunaMuneer, Sowbiya
Issue Date
Feb-2021
Publisher
MDPI
Keywords
crop improvement; floral growth; lighting systems; physiological modeling; metabolic activities
Citation
SUSTAINABILITY, v.13, no.4
Indexed
SCIE
SSCI
SCOPUS
Journal Title
SUSTAINABILITY
Volume
13
Number
4
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/4198
DOI
10.3390/su13041985
ISSN
2071-1050
Abstract
A reduction in crop productivity in cultivable land and challenging environmental factors have directed advancement in indoor cultivation systems, such that the yield parameters are higher in outdoor cultivation systems. In wake of this situation, light emitting diode (LED) lighting has proved to be promising in the field of agricultural lighting. Properties such as energy efficiency, long lifetime, photon flux efficacy and flexibility in application make LEDs better suited for future agricultural lighting systems over traditional lighting systems. Different LED spectrums have varied effects on the morphogenesis and photosynthetic responses in plants. LEDs have a profound effect on plant growth and development and also control key physiological processes such as phototropism, the immigration of chloroplasts, day/night period control and the opening/closing of stomata. Moreover, the synthesis of bioactive compounds and antioxidants on exposure to LED spectrum also provides information on the possible regulation of antioxidative defense genes to protect the cells from oxidative damage. Similarly, LEDs are also seen to escalate the nutrient metabolism in plants and flower initiation, thus improving the quality of the crops as well. However, the complete management of the irradiance and wavelength is the key to maximize the economic efficacy of crop production, quality, and the nutrition potential of plants grown in controlled environments. This review aims to summarize the various advancements made in the area of LED technology in agriculture, focusing on key processes such as morphological changes, photosynthetic activity, nutrient metabolism, antioxidant capacity and flowering in plants. Emphasis is also made on the variation in activities of different LED spectra between different plant species. In addition, research gaps and future perspectives are also discussed of this emerging multidisciplinary field of research and its development.
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