title: Patterns of enzyme changes during leaf senescence.
mesh_terms: D000375:Aging; D002523:Edible Grain / Q000201:enzymology; D005954:Glucosephosphate Dehydrogenase / Q000378:metabolism*; D010544:Peroxidases / Q000378:metabolism*; D010944:Plants / Q000201:enzymology*; D010947:Plants, Toxic; D012260:Ribonucleases / Q000378:metabolism*; D014026:Nicotiana / Q000201:enzymology
chemical_list: D005954:Glucosephosphate Dehydrogenase; D010544:Peroxidases; D012260:Ribonucleases