Antioxidant response of lettuce plants to four wavelengths of LED visible light
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ORIGINAL ARTICLE
Antioxidant response of lettuce plants to four wavelengths of LED visible light Ana Isabel Mireles Arriaga1 · Cynthya Edith Espinosa Granados1 · Victor Montero Tavera2 · Griselda Maki Díaz3 · Jesus Hernández Ruiz1 · Jorge Eric Ruiz Nieto1 Received: 26 March 2020 / Revised: 14 October 2020 / Accepted: 23 October 2020 © Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Kraków 2020
Abstract Plants are highly sensitive to variations in components of the visible light such as its wavelength, recently, the incorporation of LED (Lighting-Emitting Diode) artificial lighting of different wavelengths in horticulture has allowed to evaluate the responses generated in different levels of plant biology and use the synthesis of antioxidant compounds, whose consumption is beneficial for human health. The aim of this study was to evaluate the antioxidant response of lettuce plants to four wavelengths of LED visible light. Plants type Romaine cultivated until the end of their productive cycle were subjected to treatments of red, yellow, green and blue light; later, the kinetic response was characterized under red and yellow light for their capacity to stimulate the antioxidant synthesis. As main result, red light generated an antioxidant response in the fourth day which could be used for adding a functional component to lettuce plants. Yellow light could also be used, but the antioxidant response required at least six days. Despite the results, further research is required regarding the postharvest conservation of the antioxidant compounds and their usage for human health. Keywords Lactuca sativa · Artificial lighting · Red light · Antioxidant activity · Phenolic compounds · POD
Introduction As LED technology continues its development and the price of the components decreases, this lighting system allows to establish innovative agronomic practices of precision to grow vegetables under controlled conditions. Higher Communicated by P. Wojtaszek. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11738-020-03161-6) contains supplementary material, which is available to authorized users. * Jorge Eric Ruiz Nieto [email protected] 1
Departamento de Agronomía, División de Ciencias de la Vida, Universidad de Guanajuato Campus IrapuatoSalamanca, 36500 Irapuato, Guanajuato, México
2
Campo Experimental Bajío, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, 38110 Celaya, Guanajuato, México
3
Departamento de Arte y Empresa, División de Ingenierías, Universidad de Guanajuato Campus Irapuato-Salamanca, 36885 Salamanca, Guanajuato, México
plants do not just transform the solar energy into chemicals through the process of photosynthesis; they also use the light an informational signal to control a multitude of responses (Kami et al. 2010). Acclimatization of changes in the quality and intensity of light requires to equilibrate the energy distribution within the photosynthetic machinery to boost efficiently the C
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