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학술기사

Growth of dropwort plants and their accumulation of bioactive compounds after exposure to UV lamp or LED irradiation

표제/저자사항
Growth of dropwort plants and their accumulation of bioactive compounds after exposure to UV lamp or LED irradiation / Yu-Min Jeon, Ki-Ho Son, Sang-Min Kim, Myung-Min Oh
형태사항
p. 659-670 ; 28 cm
주기사항
수록자료: Horticulture, environment, and biotechnology. Korean Society for Horticultural Science. Vol.59 No.5(2018 October), p. 659-670 59:5<659 ISSN 2211-3452↔
저자: Yu-Min Jeon, Division of Animal, Horticultural and Food Sciences, Chungbuk National University ; Brain Korea 21 Center for Bio-Resource Development, Chungbuk National University
저자: Ki-Ho Son, Department of Horticultural Science, Gyeongnam National University of Science and Technology
저자: Sang-Min Kim, Natural Products Research Center, KIST Gangneung Institute of Natural Products
저자: Myung-Min Oh, Division of Animal, Horticultural and Food Sciences, Chungbuk National University ; Brain Korea 21 Center for Bio-Resource Development, Chungbuk National University
수록잡지명
Horticulture, environment, and biotechnology.
청구기호
635.05-H822-59(5)
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3층 연속간행물실(서고자료대출반납)(보존)
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학술기사선택 => 바구니넣기 => 자료당일신청 후 [3층 연속간행물실(서고자료대출반납)(보존)] 에서 이용하십시오

초록내용/해제내용

인쇄

 High-energy ultraviolet (UV) light is an environmental stress that can be used to stimulate the biosynthesis of bioactive compounds in plants. This study aimed to comparatively determine the effects of UV-A, UV-B, and UV-C lamps or light-emitting diodes (LEDs) on the growth of dropwort (Oenanthe stolonifera) plants, and their contents of bioactive compounds. Dropwort seedlings with 2–3 offshoots were transplanted in a plant factory equipped with white LED and deep flow technique systems, and cultivated under standard growth conditions for 36 days. Thereafter, the dropwort plants were supplementally exposed to one of five UV treatments with energy equivalent to 10 W m⁻²: UV-C lamps for 2 days, UV-B lamps for 3 days, and UV-A lamps and LEDs with 370 nm or 385 nm peak wavelengths for 14 days. The variable fluorescence (Fv) to maximum fluorescence (Fm) ratio (Fv/Fm) of dropwort leaves began to significantly decrease 3 h after exposure to UV-C, and 6 h after UV-B exposure. Fluorescence in UV-C and UV-B-treated plants was lower than in control and UV-A-treated plants during the entire period of UV irradiation. The fresh weight of the shoots of plants treated with UV was not significantly different to those of the control plants during the entire UV irradiation period. The total phenolic content of dropwort shoots exposed to UV-A and UV-B treatments significantly increased compared to that of the control 1 day after treatment. The total phenolic content was highest in plants treated with the 370 nm UV-A LED, and this was significantly higher (33%) than the control. Plants treated with the 385 nm UV-A LED on day 3 of treatment had the highest total phenolic content compared to the other treatments. A similar trend was observed in contents of flavonoids and persicarin. UV light induced higher anthocyanin content than the control. The activity of phenylalanine ammonia-lyase after UV treatments was significantly higher than the control, supporting the findings of our bioactive compound assays. In conclusion, the results of this study suggest that irradiating vegetables with UV-A LEDs would be useful in plant factories with artificial light for improving vegetable quality without inhibiting growth.

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