R. Rivas

Publications160
h-index42
Citations5,146
Highly Influential Citations249
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A New Species of Devosia That Forms a Unique Nitrogen-Fixing Root-Nodule Symbiosis with the Aquatic Legume Neptunia natans (L.f.) Druce
TLDR
Sequence analysis showed that this newly described Neptunia-nodulating Devosia species may have acquired these symbiotic genes by horizontal transfer from Rhizobium tropici, suggesting that this new species may be able to acquire these symbiotically-induced nitrogenfixing genes through horizontal transfer.
Reclassification of Agrobacterium ferrugineum LMG 128 as Hoeflea marina gen. nov., sp. nov.
TLDR
The data from this polyphasic study indicate that this strain belongs to a new genus of the family 'Phyllobacteriaceae', and therefore it is proposed that strain LMG 128(T) should be reclassified as representing a novel species within the new genus Hoeflea gen. nov.
Nodulation of Lupinus albus by Strains of Ochrobactrum lupini sp. nov
TLDR
A polyphasic study including phenotypic, chemotaxonomic, and molecular features of the strains isolated in this study showed that they belong to a new species of the genus Ochrobactrum, for which the name OchRobactrum lupini sp.
Role of bacterial biofertilizers in agriculture and forestry
TLDR
This review summarizes the main bacterial mechanisms for improving crop yields, reviews the existing technologies for the manufacture and application of beneficial bacteria in the field, and recapitulates the status of the microbe-based inoculants in World Markets.
Description of Devosia neptuniae sp. nov. that nodulates and fixes nitrogen in symbiosis with Neptunia natans, an aquatic legume from India.
TLDR
Assignment of this new taxon represents the fourth example in the literature of a non-rhizobial genus of bacteria capable of forming a bonafide dinitrogen-fixing root-nodule symbiosis with legume plants, which is named Devosia neptuniae sp.
Bradyrhizobium pachyrhizi sp. nov. and Bradyrhizobium jicamae sp. nov., isolated from effective nodules of Pachyrhizus erosus.
TLDR
Genotypic and phenotypic differences among the novel strains isolated from Pachyrhizus and B. elkanii were found regarding the assimilation of carbon sources and antibiotic resistance, and these differences were congruent with DNA-DNA hybridization analysis.
Phyllobacterium trifolii sp. nov., nodulating Trifolium and Lupinus in Spanish soils.
TLDR
The results of DNA-DNA hybridization, phenotypic tests and fatty acid analyses confirmed that this strain represents a novel species of the genus Phyllobacterium, for which the name PhyllOBacterium trifolii sp.
Cohnella phaseoli sp. nov., isolated from root nodules of Phaseolus coccineus in Spain, and emended description of the genus Cohnella.
TLDR
The results of this study suggest that isolate GSPC1 T should be classified within a novel Cohnella species, for which the name Cohnella phaseoli sp.
Ochrobactrum cytisi sp. nov., isolated from nodules of Cytisus scoparius in Spain.
TLDR
Both strains ESC1(T) and ESC5 contained nodD and nifH genes on megaplasmids that were related phylogenetically to those of rhizobial strains nodulating Phaseolus, Leucaena, Trifolium and Lupinus and were able to reduce nitrate and to hydrolyse aesculin.
Taxonomy of Bacteria Nodulating Legumes
TLDR
An overview of the history of the rhizobia and the widespread phylogenetic diversity of nitrogen-fixing legume symbionts is provided.
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