title: Succinate dehydrogenase mutant of Rhizobium meliloti.
abstract: A succinate dehydrogenase mutant strain of Rhizobium meliloti was isolated after nitrosoguanidine mutagenesis. It failed to grow on succinate, glutamate, acetate, pyruvate, or arabinose but grew on glucose, sucrose, fructose, and other carbohydrates. The mutant strain showed delayed nodulation of lucerne plants, and the nodules were white and ineffective. A spontaneous revertant strain of normal growth phenotype induced red and effective nodules.
mesh_terms: D050260:Carbohydrate Metabolism; D002952:Citric Acid Cycle; D005971:Glutamates / Q000378:metabolism; D018698:Glutamic Acid; D009154:Mutation; D012231:Rhizobium / Q000201:enzymology* / Q000235:genetics / Q000502:physiology; D013385:Succinate Dehydrogenase / Q000235:genetics / Q000378:metabolism*; D013386:Succinates / Q000378:metabolism; D019802:Succinic Acid; D013559:Symbiosis
chemical_list: D005971:Glutamates; D013386:Succinates; D018698:Glutamic Acid; D019802:Succinic Acid; D013385:Succinate Dehydrogenase