Nodulation Genes and Their Regulation in Rhizobium Meliloti
Our long term goals are to study the interaction of Rhizobium and plants at the molecular and cellular levels. Our system of study is Rhizobium meliloti and its host plants such as alfalfa (Medicago sativa L.). The approaches we use are primarily to combine genetic analysis of nodulation with microscopic observation of normal and mutant bacteria during interaction with plants. Our recent work includes the definition of two new nodulation genes, and the further characterization of the network for regulation of nodulation genes in Rhizobium meliloti. One theme found in both these studies is the complexity arising from multiple gene copies in R. meliloti.
KeywordsMutant Bacterium Multiple Gene Copy Rhizobium Cell Seed Exudate nodD Family
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