UV-B antagonises shade avoidance and increases levels of the flavonoid quercetin in coriander ( Coriandrum sativum )

摘要: Despite controlling a diverse array of regulatory processes in plants, UV-B wavelengths (280-315 nm) are attenuated by common greenhouse materials such as glass and polycarbonate therefore depleted many commercial growing environments. In this study, we analysed the architecture, pigment accumulation antioxidant capacity coriander (Coriandrum sativum, also known cilantro) plants grown with without supplementary (1.5 µmol m-2 s-1). We demonstrate that limits stem elongation responses to neighbour proximity perception (shade avoidance), promoting more compact plant architecture. addition, increased leaf quercetin content total capacity. Arabidopsis thaliana mutants deficient flavonoid biosynthesis were not impaired shade avoidance inhibition, suggesting UV-B-induced synthesis is component response. Our results indicate supplementation may provide method manipulate flavour nutritional potted herbs whilst reducing deleterious impacts dense planting on product quality.