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J Photochem Photobiol B

Title:		"Influence of colorful light-emitting diodes on growth, biochemistry, and production of volatile organic compounds in vitro of Lippia filifolia (Verbenaceae)"
Author(s):		Chaves MC; Freitas JCE; Nery FC; Paiva R; Prudente DO; Costa BGP; Daubermann AG; Bernardes MM; Grazul RM;
Address:		"Universidade Federal de Lavras, Departamento de Biologia, Lavras, MG, Brasil. Universidade Federal de Sao Joao del-Rei, Departamento de Engenharia de Biossistemas, Sao Joao del-Rei, MG, Brasil. Electronic address: fernandacarlota@ufsj.edu.br. Centro de Tecnologia Canavieira, Piracicaba, SP, Brasil. Universidade Federal de Juiz de Fora, Departamento de Quimica, Juiz de Fora, MG, Brasil"
Journal Title:		J Photochem Photobiol B
Year:		2020
Volume:		20200922
Issue:
Page Number:		112040 -
DOI:		10.1016/j.jphotobiol.2020.112040
ISSN/ISBN:		1873-2682 (Electronic) 1011-1344 (Linking)
Abstract:		"Lippia filifolia Mart. & Schauer belongs to the Verbenaceae family and it is endemic from the rupestrian fields of the Espinhaco mountain range, located in Minas Gerais, Brazil. It is an aromatic species with medicinal potential due to the production of volatile compounds that constitute its essential oil. The objective of this work was to evaluate the effects of light quality using light-emitting diodes (LEDs) over the growth of L. filifolia grown in vitro after 45 days of culture, analyzing its volatile organic compounds (VOCs), biochemical, and biometric traits. This study had four treatments according to the wavelength of LED lamps: (i) white (control), (ii) blue, (iii) red, and (iv) a combination of red + blue (mix). The light quality influenced the growth, metabolism, and VOCs production of plantlets. The specimens showed higher height under red and white treatments and higher biomass accumulation, nodal segments, and shoot numbers under the mix treatment. Higher total carbohydrate content was also observed on the mix treatment, while the white LED provided higher chlorophylls and carotenoids contents. In addition, the lipid peroxidation was more pronounced in mix and white LEDs treatments, and it was also observed significant but not quite changes in VOCs profiles due to light quality. Eucalyptol was the compound found in a higher concentration among the VOCs of L. filifolia grown in vitro at all light quality treatments studied"
Keywords:		Carotenoids/metabolism Chlorophyll/metabolism Color Lippia/*growth & development/*metabolism/radiation effects *Semiconductors Volatile Organic Compounds/*metabolism Aromatic plant Endangered species Eucalyptol Light quality Tissue culture;
Notes:		"MedlineChaves, Marcella Carvalho Freitas, Jober Conde Evangelista Nery, Fernanda Carlota Paiva, Renato Prudente, Debora de Oliveira Costa, Beatriz Goncalves Pereira Daubermann, Andre Guilherme Bernardes, Mateus Moreira Grazul, Richard Michael eng Switzerland 2020/09/29 J Photochem Photobiol B. 2020 Nov; 212:112040. doi: 10.1016/j.jphotobiol.2020.112040. Epub 2020 Sep 22"