| identification of rhizobium plasmid sequences involved in recognition of psophocarpus, vigna, and other legumes. | symbiotic dna sequences involved in nodulation by rhizobium must include genes responsible for recognizing homologous hosts. we sought these genes by mobilizing the symbiotic plasmid of a broad host-range rhizobium mpik3030 (= ngr234) that can nodulate glycine max, psophocarpus tetragonolobus, vigna unguiculata, etc., into two nod- rhizobium mutants as well as into agrobacterium tumefaciens. subsequently, cosmid clones of pmpik3030a were mobilized into nod+ rhizobium that cannot nodulate the cho ... | 1986 | 3958042 |