Pilar Navarro-Gómez

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Sinorhizobium fredii HH103 is a rhizobial soybean symbiont that exhibits an extremely broad host-range. Flavonoids exuded by legume roots induce the expression of rhizobial symbiotic genes and activate the bacterial protein NodD, which binds to regulatory DNA sequences called nod boxes (NB). NB drive the expression of genes involved in the production of(More)
In the rhizobia-legume symbiotic interaction, bacterial surface polysaccharides, such as exopolysaccharide (EPS), lipopolysaccharide (LPS), K-antigen polysaccharide (KPS) or cyclic glucans (CG), appear to play crucial roles either acting as signals required for the progression of the interaction and/or preventing host defence mechanisms. The symbiotic(More)
Sinorhizobium fredii HH103 is a rhizobial strain showing a broad host range of nodulation. In addition to the induction of bacterial nodulation genes, transition from a free-living to a symbiotic state requires complex genetic expression changes with the participation of global regulators. We have analyzed the role of the zinc-finger transcriptional(More)
Rhizobial surface polysaccharides are important molecular determinants required for successful symbiosis with legumes. In Sinorhizobium (Ensifer) meliloti Rm41, the rkp-2 region is involved in the biosynthesis of K-antigen polysaccharide (KPS) and lipopolysaccharide (LPS). This region is composed of two genes, lpsL and rkpK, which are respectively(More)
OBJECTIVE The lack of adherence to antibiotic treatments is a matter of special interest, which has important clinical implications, as it is associated with therapeutic failure and increased bacterial resistance causing a high sani-tary cost. The objective of our study was to assess the degree of adherence to prescribed antibiotic treatment in outpatients(More)
The question of how genotypic and ecological units arise and spread in natural microbial populations remains controversial in the field of evolutionary biology. Here, we investigated the early stages of ecological and genetic differentiation in a highly clonal sympatric Sinorhizobium meliloti population. Whole-genome sequencing revealed that a large DNA(More)
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