文献类型：期刊文献

英文题名：Light-Emitting Diodes Modify Medicinal Quality of Mown Rabdosia rubescens, with Changes in Growth, Physiology, and Antioxidant Activity, under Drought Stress

作者：Gao, Jun[1,2,3] Meng, Ping[1,2,3] Zhao, Yan[4] Zhang, Jinsong[1,2,3] He, Chunxia[1,2,3] Wang, Qirui[5] Cai, Jinfeng[2]

第一作者：高峻;Gao, Jun

通信作者：He, CX[1];He, CX[2];He, CX[3];Wang, QR[4]

机构：[1]Chinese Acad Forestry, Key Lab Tree Breeding & Cultivat, Natl Forestry & Grassland Adm, Res Inst Forestry, Beijing 100091, Peoples R China;[2]Nanjing Forest Univ, Collaborat Innovat Ctr Sustainable Forestry Southe, Forestry Southern China, Nanjing 210037, Peoples R China;[3]Henan Xiaolangdi Forest Ecosyst Natl Observat & Re, Jiyuan 454650, Peoples R China;[4]Henan Univ Sci & Technol, Coll Hort & Plant Protect, Luoyang 471023, Peoples R China;[5]Henan Agr Univ, Sch Landscape Architecture & Art, Zhengzhou 450002, Peoples R China

年份：2023

卷号：12

期号：18

外文期刊名：PLANTS-BASEL

收录：;Scopus(收录号：2-s2.0-85172913319);WOS:【SCI-EXPANDED(收录号:WOS:001079677200001)】；

基金：This research was funded by the Chinese Academy of Forestry (grant number CAFYBB2019ZC001 )

语种：英文

外文关键词：Rabdosia rubescens; LED; artificial illumination; water deficit; medicinal quality

摘要：Medicinal plants accommodated by understory habitats can easily suffer over-exploitation in the heavy harvest of natural products. It is necessary to develop a sustainable cultural protocol to provide high-quality stocks for efficient regeneration. Drought places stress on medicinal plants during their culture by limiting new sprout growth and reducing the quality of medicinal extracts. Artificial mediating approaches should be considered in a sustainable regime of medicinal plant culture to test the potential tradeoff between resistance to drought and production ability. In this study, Rabdosia rubescens seedlings were raised in three light-emitting diode (LED) spectra from red (71.7% red, 14.6% green, 13.7% blue), green (26.2% red, 17.4% green, 56.4% blue), and blue (17.8% red, 33.7% green, 48.5% blue) lights. Mown seedlings were subjected to a simulated drought event. Drought stressed the seedlings by reducing the growth, dry mass, nitrogen (N) uptake, and oridonin content. Mowing increased the oridonin content but decreased total C and N accumulation and the delta C-13 level. The red light benefitted starch accumulation only under the well-watered condition, and the green light induced an upregulation of delta C-13 but decreased antioxidant activity. Oridonin content was negatively associated with combined delta C-13 and catalase activity. Overall, either mowing or blue light can be recommended for the culture of R. rubescens to increase oridonin content, alleviating some of the negative consequences of drought.