title: Defective synthesis of porphyrins in barley plastids caused by mutation in nuclear genes.
mesh_terms: D002845:Chromatography; D002855:Chromatography, Thin Layer; D005796:Genes; D005804:Genes, Lethal; D007982:Levulinic Acids / Q000494:pharmacology; D008433:Mathematics; D008954:Models, Biological; D009154:Mutation; D010944:Plants / Q000201:enzymology*; D011166:Porphyrins / Q000096:biosynthesis*; D013053:Spectrophotometry
chemical_list: D007982:Levulinic Acids; D011166:Porphyrins