The rhizosphere signal molecule lumichrome alters seedling development in both legumes and cereals

摘要: Summary •  The stimulatory role of lumichrome, a rhizosphere metabolite, was assessed on the growth legume and cereal seedlings. •  At very low nanomolar concentration (5 nm), lumichrome elicited promotion in cowpea, soybean, sorghum, millet maize, but not common bean, Bambara groundnut Sudan grass. In soybean cowpea only, 5 nm caused early initiation trifoliate leaf development, expansion unifoliate leaves, increased stem elongation and, as result, an increase shoot plant total biomass relative to control. Lumichrome (5 nm) also area maize thus raised there no effect other cereals. Root stimulated sorghum by supply lumichrome. •  By contrast, application higher dose (50 nm) depressed development leaves second soybean. The 50 nm consistently decreased root millet, had species. •  These data show that is signal molecule affects seedling both monocots dicots.