title: Effects of light-emitting diodes on expression of phenylpropanoid biosynthetic genes and accumulation of phenylpropanoids in Fagopyrum tataricum sprouts.
abstract: Buckwheat sprouts are a popular food item in many countries. The effects of light-emitting diodes (LEDs) on sprout growth and development, changes in mRNA transcription, and accumulation of phenylpropanoid compounds were studied in tartary buckwheat 'Hokkai T8' sprouts. The highest transcript levels were observed after 2 days of LED exposure for all genes, especially FtPAL and FtF3'H, which showed higher expression in sprouts grown under blue and white light than in those grown under red light. Catechin content in sprouts grown under red light increased dramatically throughout the 10 day time course. Maximum rutin content (43.37 mg/g dry weight (DW)) was observed in sprouts at 4 days after exposure (DAE) to blue light. Similarly, the highest cyanidin 3-O-rutinoside content (0.85 mg/g DW) was detected at 10 DAE to blue light. On the basis of these results, blue LED light is recommended as a light source for enhancing the content of phenolic compounds in tartary buckwheat sprouts.
authors.affiliation: Department of Crop Science, Chungnam National University , Daejeon 305-754, Korea.
authors.forename: Aye Aye
authors.initials: AA
authors.lastname: Thwe
authors.forename: Yeon Bok
authors.initials: YB
authors.lastname: Kim
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Li
authors.forename: Jeong Min
authors.initials: JM
authors.lastname: Seo
authors.forename: Sun-Ju
authors.initials: SJ
authors.lastname: Kim
authors.forename: Tastsuro
authors.initials: T
authors.lastname: Suzuki
authors.forename: Sun-Ok
authors.initials: SO
authors.lastname: Chung
authors.forename: Sang Un
authors.initials: SU
authors.lastname: Park
mesh_terms: D053898:Biosynthetic Pathways / Q000528:radiation effects; D019612:Fagopyrum / Q000235:genetics* / Q000254:growth & development / Q000378:metabolism / Q000528:radiation effects*; D005419:Flavonoids / Q000096:biosynthesis*; D058870:Food, Organic / Q000032:analysis; D018506:Gene Expression Regulation, Plant / Q000528:radiation effects*; D008027:Light; D010940:Plant Proteins / Q000235:genetics* / Q000378:metabolism; D012639:Seeds / Q000235:genetics / Q000254:growth & development / Q000378:metabolism / Q000528:radiation effects
chemical_list: D005419:Flavonoids; D010940:Plant Proteins