title: A search for a leghaemoglobin-like compound in root nodules of Trema cannabina Lour.
abstract: Root nodules collected from the non-leguminous plant Trema cannabina Lour. grown under natural field conditions were examined for the presence of leghaemoglobin. No trace of any soluble haemoglobin-like compound could be detected by spectrophotometric analysis or molecular weight comparison studies, although a small amount of soluble haemoprotein with peroxidase activity was isolated. Possible alternatives to the possession of a leghaemoglobin in non-legume/Rhizobium N2-fixing associations are discussed.
mesh_terms: D001665:Binding Sites; D002248:Carbon Monoxide; D004227:Dithionite; D006420:Hemeproteins / Q000032:analysis*; D006735:Horseradish Peroxidase / Q000378:metabolism; D007874:Leghemoglobin / Q000032:analysis*; D010084:Oxidation-Reduction; D010544:Peroxidases / Q000378:metabolism; D010944:Plants / Q000032:analysis* / Q000201:enzymology; D011485:Protein Binding; D013045:Species Specificity; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet
chemical_list: D006420:Hemeproteins; D007874:Leghemoglobin; D004227:Dithionite; D002248:Carbon Monoxide; D006735:Horseradish Peroxidase; D010544:Peroxidases