Article
Rhizobium meliloti mutants with decreased DAHP synthase activity are sensitive to exogenous tryptophan and phenylalanine and form ineffective nodules.
Molecular plant-microbe interactions : MPMI - 1 Jan 2000
Jelesko J G, Lara J C, Leigh J A
Abstract excerpt
We isolated two Tn5-generated mutants of Rhizobium meliloti whose growth was inhibited by rich medium or by exogenous tryptophan or phenylalanine. These mutants, Rm7479 and Rm7480, belonged to the same genetic complementation group. The mutant locus could not be found on either indigenous megaplasmid but was localized on the chromosome. The mutants formed ineffective nodules on alfalfa plants. They invaded...
Topics
- 3-Deoxy-7-Phosphoheptulonate Synthase
- Fabaceae
- Microscopy, Electron
- Mutation
- Phenotype
- Phenylalanine
- Plants, Medicinal
- Sinorhizobium meliloti
- Symbiosis
- Tryptophan