Effects of Light Quality Using LEDs on Expression Patterns in Brassica rapa Seedlings

Abstract

Abstract. Light with two faces, beneficial and harmful effects is an important signal for every living cell. Optimal adaptation to light environment enhances the fitness of an organism and survival in nature. Understandings of light quality and plant growth provide with the economical guides for artificial light sources like LEDs. Compared with those under white light, the 1 week seedlings of Chinese cabbage (Brassica rapa) under monochromic red and blue light showed normal development and growth. In contrast to extremely long and etiolated hypocotyls of the seedlings under dark, those under far-red etiolated were extremely short. Based on the microarray analysis, blue light induced the vigorous development and growth and two fold changes of transcripts than red light condition. To have insight of gene products under different light qualities conditions, GO term enrichments were calculated and each gene according to their GO terms were categorized. The blue and red lights affected the expressions of genes related to biological process. Especially, the genes related to metabolic process and developmental process and plastid and chloroplast in the cellular component category were induced under blue light. This study provided the molecular biological evidence for various light qualities on the growing process of B. rapa.

Effect of LED mixed light conditions on the glucosinolate pathway in brassica rapa

“…본 연구에서는 LED의 광질에 반응하는 배추 초기 유 묘의 글루코시놀레이트 합성 기작과 연관된 유전자 발현 변화를 추적하였다. 청색광을 배추 유묘에 조사하였을 때 2차 대사산물 생산에 관여하는 유전자들의 발현이 변 화하였다는 이전의 연구 (Kim et al 2013;Mun et al 2014 (Table 4).…”