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Photon flux density and wavelength influence on growth, photosynthetic pigments and volatile organic compound accumulation in Aeollanthus suaveolens (Catinga-de-mulata) under in vitro conditions
Industrial Crops and Products ( IF 5.6 ) Pub Date : 2021-05-05 , DOI: 10.1016/j.indcrop.2021.113597
Diene Xavier Araújo , Tainá Teixeira Rocha , Alexandre Alves de Carvalho , Suzan Kelly Vilela Bertolucci , Ana Paula Ribeiro Medeiros , Fernanda Naiara Santos Ribeiro , Suzana Marques Barbosa , José Eduardo Brasil Pereira Pinto

Aeollanthus suaveolens Mart. ex Spreng. (Lamiaceae) is an aromatic plant of African origin and is widely used in folk medicine due to its anticonvulsant and sedative effects. The aim of the study was to establish whether photon flux density (PFD) and wavelength, provided by light emitting diodes (LEDs), affect plantlet growth, photosynthetic pigment, and volatile organic compound (VOC) accumulation in Aeollanthus suaveolens. Nodal segments were grown under different PFDs (20, 57, 78, 102 and 139 μmol m−2 s−1) obtained with white LEDs lamps and under different LEDs light spectra as follows: white, green, yellow, blue, red, and combinations of red and blue (2.5R:1B; 1R:2.5B; 1R:1B) and cool white fluorescent lamps. The different light intensities affected the growth and production of photosynthetic pigments and volatile organic compounds. Plantlets grown under a PFD of 139 μmol m−2 s−1 showed greater dry weight accumulation and growth than those raised under other PFDs. The chlorophyll and carotenoid contents increased with a PFD of 20 μmol m−2 s−1. Light quality also affected plantlet growth. White LEDs light and fluorescent light were equally effective for growth and dry weight accumulation. Monochromatic red, blue, and yellow lights inhibited growth in Aeollanthus suaveolens. The concentrations of photosynthetic pigments from A. suaveolens plantlets were significantly affected by different wavelengths. Yellow wavelengths favored the production of photosynthetic pigments. The accumulation of VOCs was influenced by PFD and spectral quality.



中文翻译:

体外条件下光子通量密度和波长对长风信子生长,光合色素和挥发性有机化合物积累的影响

eo风信子市场。前Spreng。(唇形科)是源自非洲的芳香植物,由于其抗惊厥和镇静作用而被广泛用于民间医学。这项研究的目的是确定发光二极管(LED)提供的光子通量密度(PFD)和波长是否会影响南方AAeollanthus suaveolens)中的幼苗生长,光合色素和挥发性有机化合物(VOC)积累。节点节段在不同的PFD(20、57、78、102和139μmolm -2 s -1)使用白色LED灯并在以下不同的LED下获得的光谱如下:白色,绿色,黄色,蓝色,红色以及红色和蓝色的组合(2.5R:1B; 1R:2.5B; 1R:1B)和冷白色荧光灯灯。不同的光强度影响光合色素和挥发性有机化合物的生长和产生。在139μmolm -2 s -1的PFD下生长的幼苗显示出比其他PFD培育的幼苗更大的干重积累和生长。PFD为20μmolm -2 s -1时,叶绿素和类胡萝卜素含量增加。光照质量也影响了幼苗的生长。白光LED和荧光灯对于生长和干重积累均同样有效。单色的红色,蓝色和黄色灯光抑制了风神A的生长。不同波长对幼苗光合作用色素的浓度有显着影响。黄色波长有利于光合色素的生产。VOC的积累受PFD和光谱质量的影响。

更新日期:2021-05-06
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