Extension of host range of Rhizobium leguminosarum bv. trifolii caused by point mutations in nodD that result in alterations in regulatory function and recognition of inducer molecules.

Abstract excerpt

The positive activation of several nodulation genes in strain ANU843 of Rhizobium leguminosarum biovar trifolii is mediated by the product of the nodD gene and by the interaction of NodD with plant-secreted inducer and anti-inducer compounds. We have mutagenized the nodD gene of strain ANU843 with nitrosoguanidine and have found that the ability of the mutated nodD products to interact with inducer and...

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