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Journals and Conferences
We show here that Rhizobium meliloti, the nitrogen-fixing endosymbiont of alfalfa (Medicago sativa), has a regulatory gene that is structurally homologous to previously characterized ntrC genes in… (More)
Little is known about the signals that govern the network of meristem and organ identity genes that control flower development. In Arabidopsis, we can induce a heterochronic switch from flower to… (More)
We have cloned and characterized three distinct Rhizobium meliloti loci involved in glutamine biosynthesis (glnA, glnII, and glnT). The glnA locus shares DNA homology with the glnA gene of Klebsiella… (More)
We have characterized a Rhizobium meliloti regulatory gene required for the expression of two closely linked symbiotic operons, the nitrogenase operon (nifHDK genes) and the "P2" operon. This… (More)
We have determined the complete nucleotide sequences of three functionally related nitrogen assimilation regulatory genes from Klebsiella pneumoniae and Rhizobium meliloti. These genes are: 1) The K.… (More)
A plasmid containing cauliflower mosaic virus DNA can be faithfully cloned in Escherichia coli, but proved to be noninfective in test plants.
To investigate the expression of specific symbiotic genes during the development of nitrogen-fixing root nodules, we conducted a systematic analysis of nodule-specific proteins and RNAs produced… (More)
Most of what is known about the control of nif gene expression in Rhizobium and Bradyrhizobium species has been obtained by analogy with the more detailed knowledge of the regulation of nif genes in… (More)
In this article we describe experiments which demonstrate that there are surprising similarities in the regulation of nif genes in Klebsiella pneumoniae and Rhizobium meliloti.