title: Accumulation of Phenylpropanoids by White, Blue, and Red Light Irradiation and Their Organ-Specific Distribution in Chinese Cabbage (Brassica rapa ssp. pekinensis).
abstract: This study investigated optimum light conditions for enhancing phenylpropanoid biosynthesis and the distribution of phenylpropanoids in organs of Chinese cabbage (Brassica rapa ssp. pekinensis). Blue light caused a high accumulation of most phenolic compounds, including p-hydroxybenzoic acid, ferulic acid, quercetin, and kaempferol, at 12 days after irradiation (DAI). This increase was coincident with a noticeable increase in expression levels of BrF3H, BrF3'H, BrFLS, and BrDFR. Red light led to the highest ferulic acid content at 12 DAI and to elevated expression of the corresponding genes during the early stages of irradiation. White light induced the highest accumulation of kaempferol and increased expression of BrPAL and BrDFR at 9 DAI. The phenylpropanoid content analysis in different organs revealed organ-specific accumulation of p-hydroxybenzoic acid, quercetin, and kaempferol. These results demonstrate that blue light is effective at increasing phenylpropanoid biosynthesis in Chinese cabbage, with leaves and flowers representing the most suitable organs for the production of specific phenylpropanoids.
authors.affiliation: †Department of Crop Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-754, Korea.
authors.forename: Yeon Jeong
authors.initials: YJ
authors.lastname: Kim
authors.affiliation: §Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science (NIHHS), Rural Development Administration (RDA), Bisanro 92, Eumseong, Chungbuk 369-873, Republic of Korea.
authors.forename: Yeon Bok
authors.initials: YB
authors.lastname: Kim
authors.affiliation: †Department of Crop Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-754, Korea.
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Li
authors.affiliation: ‡Department of Horticulture, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, Korea.
authors.forename: Su Ryun
authors.initials: SR
authors.lastname: Choi
authors.affiliation: ⊗Department of Horticultural Crop Research, National Institute of Horticultural and Herbal Science (NIHHS), Rural Development Administration (RDA), 475 Imok-dong, Jangan-gu, Suwon 440-706, Korea.
authors.forename: Suhyoung
authors.initials: S
authors.lastname: Park
authors.affiliation: ‡Department of Horticulture, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, Korea.
authors.forename: Jong Seok
authors.initials: JS
authors.lastname: Park
authors.affiliation: ‡Department of Horticulture, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, Korea.
authors.forename: Yong Pyo
authors.initials: YP
authors.lastname: Lim
authors.affiliation: †Department of Crop Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-754, Korea.
authors.forename: Sang Un
authors.initials: SU
authors.lastname: Park
mesh_terms: D053898:Biosynthetic Pathways / Q000528:radiation effects; D001937:Brassica / Q000145:classification / Q000235:genetics / Q000378:metabolism* / Q000528:radiation effects*; D018506:Gene Expression Regulation, Plant / Q000528:radiation effects; D008027:Light; D010636:Phenols / Q000378:metabolism*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism
chemical_list: D010636:Phenols; D010940:Plant Proteins
keywords: Brassica rapa ssp. pekinensis; Chinese cabbage; light conditions; organ-specific distribution; phenylpropanoid