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Manipulating light quality to promote shoot growth and bioactive compound biosynthesis of Crepidiastrum denticulatum (Houtt.) Pak & Kawano cultivated in plant factories
Journal of Applied Research on Medicinal and Aromatic Plants ( IF 3.8 ) Pub Date : 2019-12-26 , DOI: 10.1016/j.jarmap.2019.100237
Song-Yi Park , Ji-Hoon Bae , Myung-Min Oh

Crepidiastrum denticulatum (Korean common name: i-go-deul-ppae-gi) is a valuable medicinal plant used in the pharmaceutical industry and as a raw material of functional foods. In this study, we investigated the effect of light quality on C. denticulatum growth, with the goal of improving the species’ biomass and bioactive compound content when grown in plant factories with artificial lighting. Three-week-old seedlings were grown for 6 weeks in a plant factory under fluorescent lamps (control) and various sets of light-emitting diodes (LEDs): three monochromatic [red (R), green (G), and blue (B)], several dichromatic RB with different ratios of R and B [R:B = 6:4 (R6B4), 7:3 (R7B3), 8:2 (R8B2), and 9:1 (R9B1)], and several trichromatic RGB [R:G:B = 5:1:4 (R5G1B4), 6:1:3 (R6G1B3), 7:1:2 (R7G1B2), 8:1:1 (R8G1B1), and 9:1:0 (R9G1B0)]. Shoot biomass (fresh weight), leaf area, leaf shape index, and water content of the shoot were significantly higher in the RGB group than in the monochromatic and RB groups. Increasing the percentage of R light improved shoot growth in the presence of G light, as in the RGB group, and this was accompanied by a high photosynthetic rate, light absorbance rate, and electron transport rate. The contents of total phenolics and hydroxycinnamic acids per unit dry weight did not differ between plants subjected to the different light quality treatments, and the contents per shoot were thus positively associated with shoot biomass. Overall, R8G1B1 was the most effective treatment for increasing shoot biomass and the accumulation of bioactive compounds; the shoot fresh weight and total hydroxycinnamic content of R8G1B1 were significantly higher, by 50 % and 60 %, respectively, than those of the control. Thus, light quality affects the biosynthesis of bioactive compounds and the shoot biomass of C. denticulatum.



中文翻译:

调节光质以促进植物工厂种植的白纹球菌和白叶芥的芽生长和生物活性化合物的生物合成

Crepidiastrum denticulatum(朝鲜通用名:i-go-deul-ppae-gi)是一种有价值的药用植物,在制药工业中用作功能食品的原料。在这项研究中,我们调查了光质对树形衣藻的影响生长,目的是在带有人工照明的植物工厂中生长时提高物种的生物量和生物活性化合物含量。在一家工厂的工厂中,三周大的幼苗在荧光灯(对照)和各种发光二极管(LED)的作用下生长了6周:三种单色[红色(R),绿色(G)和蓝色(B) )],几个具有不同R和B比率的二色RB [R:B = 6:4(R6B4),7:3(R7B3),8:2(R8B2)和9:1(R9B1)],还有几个三色RGB [R:G:B = 5:1:4(R5G1B4),6:1:3(R6G1B3),7:1:2(R7G1B2),8:1:1(R8G1B1)和9:1: 0(R9G1B0)]。RGB组的枝条生物量(鲜重),叶面积,叶形指数和含水量显着高于单色组和RB组。在存在G光的情况下,增加R光的百分比可以改善枝条的生长,与RGB组一样,它还具有较高的光合速率,光吸收率和电子传输率。进行了不同光质处理的植物之间,每单位干重的总酚类和羟基肉桂酸含量没有差异,因此每枝的含量与枝条的生物量呈正相关。总体而言,R8G1B1是增加芽生物量和生物活性化合物积累的最有效方法。与对照相比,R8G1B1的枝条鲜重和总羟基肉桂酸含量分别显着提高了50%和60%。因此,光质会影响生物活性化合物的生物合成和竹笋的生物量。进行了不同光质处理的植物之间,每单位干重的总酚类和羟基肉桂酸含量没有差异,因此每枝的含量与枝条的生物量呈正相关。总体而言,R8G1B1是增加芽生物量和生物活性化合物积累的最有效方法。与对照相比,R8G1B1的枝条鲜重和总羟基肉桂酸含量分别显着提高了50%和60%。因此,光质会影响生物活性化合物的生物合成和竹笋的生物量。进行了不同光质处理的植物之间,每单位干重的总酚类和羟基肉桂酸含量没有差异,因此每枝的含量与枝条的生物量呈正相关。总体而言,R8G1B1是增加芽生物量和生物活性化合物积累的最有效方法。与对照相比,R8G1B1的枝条鲜重和总羟基肉桂酸含量分别显着提高了50%和60%。因此,光质会影响生物活性化合物的生物合成和竹笋的生物量。R8G1B1是增加芽生物量和生物活性化合物积累的最有效方法。与对照相比,R8G1B1的枝条鲜重和总羟基肉桂酸含量分别显着提高了50%和60%。因此,光质会影响生物活性化合物的生物合成和竹笋的生物量。R8G1B1是增加芽生物量和生物活性化合物积累的最有效方法。与对照相比,R8G1B1的枝条鲜重和总羟基肉桂酸含量分别显着提高了50%和60%。因此,光质会影响生物活性化合物的生物合成和竹笋的生物量。C. denticulatum

更新日期:2019-12-26
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