Pedro Mateos

Pedro Mateos
Universidad de Salamanca · Department of Microbiology and Genetics

PhD

About

364
Publications
211,922
Reads
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7,298
Citations
Additional affiliations
September 1990 - October 1992
Michigan State University
Position
  • Visiting Research Scholar
January 1983 - present
Universidad de Salamanca
Position
  • Professor (Full)

Publications

Publications (364)
Article
Microbial inoculants are gaining prominence in technologically advanced agri-systems due to the need for alternatives to the most pollutant agricultural inputs. The objective of this work was to improve the agronomic performance of the rhizobial inoculants for common bean, based on the superior native strain Rlp-LCS0306 of Rhizobium leguminosarum b...
Article
Full-text available
Rapeseed (Brassica napus L.) is an important crop worldwide, due to its multiple uses, such as a human food, animal feed and a bioenergetic crop. Traditionally, its cultivation is based on the use of chemical fertilizers, known to lead to several negative effects on human health and the environment. Plant growth-promoting bacteria may be used to re...
Article
El consumo indebido de antibióticos ha incrementado el número de personas que enferman y mueren por infecciones provocadas por microorganismos resistentes a estos antimicrobianos. El objetivo de este estudio fue aislar bacterias rizosféricas y evaluar su potencial para producir nuevos compuestos antimicrobianos. Se aislaron 418 colonias y se enfren...
Article
Full-text available
Primary infection of legumes by rhizobia involves the controlled localized enzymatic breakdown of cell walls at root hair tips. Previous studies determined the role of rhizobial CelC2 cellulase in different steps of the symbiotic interaction Rhizobium leguminosarum-Trifolium repens. Recent findings also showed that CelC2 influences early signalling...
Article
Full-text available
Plants harbor a diversity of microorganisms constituting the plant microbiome. Many bioinoculants for agricultural crops have been isolated from plants. Nevertheless, plants are an underexplored niche for the isolation of microorganisms with other biotechnological applications. As a part of a collection of canola endophytes, we isolated strain CDVB...
Article
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Melinis minutiflora is an invasive species that threatens the biodiversity of the endemic vegetation of the campo rupestre biome in Brazil, displacing the native vegetation and favouring fire spread. As M. minutiflora invasion has been associated with a high nitrogen (N) demand, we assessed changes in N cycle under four treatments: two treatments w...
Article
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Aims The aim of this study was to investigate whether the overexpression of NifA and NodD regulators contribute to the symbiotic improvement of chickpea mesorhizobia. Methods The native strains V-15b, ST-2, and PMI-6 were transformed with extra copies of nifA or nodD genes and several plants trial were performed. Results Plant growth assays showe...
Article
Phaseolus vulgaris and Lens culinaris are two legumes with different distribution centers that were introduced in Spain at different times, but in some regions L. culinaris has been traditionally cultivated and P. vulgaris did not. Here we analysed the rhizobia isolated from nodules of these two legumes in one of these regions. MALDI-TOF MS analysi...
Article
The infection of legume plants by rhizobia is tightly regulated to ensure accurate bacterial penetration, infection and development of functionally efficient nitrogen-fixing root nodules. Rhizobial Nod Factors (NF) have key roles in the elicitation of nodulation signalling. Infection of white clover roots also involves the tightly regulated specifi...
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Full-text available
The growing interest in a healthy lifestyle and in environmental protection is changing habits regarding food consumption and agricultural practices. Good agricultural practice is indispensable, particularly for raw vegetables, and can include the use of plant probiotic bacteria for the purpose of biofertilization. In this work we analysed the prob...
Article
Full-text available
Trifolium rubens L. is a leguminous plant “Preferential Attention”, according to the Catalog of Protected Flora of Castile and Leon (Spain). In this study we aimed to analyze the potential of three bacterial strains of the genus Rhizobium to improve the growth and development of this plant. All three strains produced 3-indoleacetic acid (IAA), but...
Article
In this study, three strains belonging to the genus Mesorhizobium, CSLC115NT, CSLC19N and CSLC37N, isolated from Lotus corniculatus nodules in Spain, were characterized. Their 16S rRNA gene sequences were closely related to those of Mesorhizobium metallidurans STM 2683T, Mesorhizobium tianshanense A-1BST, Mesorhizobium tarimense CCBAU 83306T, Mesor...
Chapter
The mutualistic interactions between nodule-forming rhizobia and specific legume host plants involve a series of signalling molecules leading to the establishment of a strong and functional symbiosis between the two partners. The competitive ability and legume host specificity of rhizobia together with the ability of both rhizobia and legumes to re...
Chapter
Throughout history, the evolution and progress of all human civilizations have been closely linked to the evolution and development of agriculture, since this is the basis of food production to sustain population and ensure social stability. At the beginning of the twentieth century, due to great advances in medicine, world population increased sig...
Article
Small non-coding RNAs (sRNAs) are expected to have pivotal roles in the adaptive responses underlying symbiosis of nitrogen-fixing rhizobia with legumes. Here, we provide primary insights into the function and activity mechanism of the Sinorhizobium meliloti trans-sRNA NfeR1 (Nodule Formation Efficiency RNA). Northern blot probing and transcription...
Article
A bacterial strain designated RA9T was isolated from a root of Cistus ladanifer in Spain. Phylogenetic analyses based on 16S rRNA gene sequence placed the isolate into the genus Bacillus with its closest relatives being B. fortis R-6514T and B. fordii R-7190T with 98.2% similarity in both cases. DNA-DNA hybridization studies showed averages of 29 a...
Article
The Serra do Rola Moça State Park (PESRM) in Minas Gerais State, Brazil is a preserved site representative of the campo rupestre biome over an ironstone outcrop that has a high level of plant diversity. Almost 60% of this grassy field has been invaded by the exotic molasses grass (Melinis minutiflora), which constitutes a severe threat to the biodi...
Chapter
Rhizobium leguminosarum bv. trifolii CelC2 cellulase is a 1,4-β-d-endoglucanase involved in the hydrolysis and biosynthesis of rhizobial cellulose. These special features make this enzyme essential in the plant infection process and important in root surface colonization and biofilm formation. A loss-of-function of the celC gene causes an increase...
Chapter
Plant growth-promoting rhizobacteria (PGPR) are one of the most important groups of rhizospheric microorganisms, such as free-living bacteria, endophytes, and endosymbiotic bacteria. PGPRs colonize plant roots, conferring several benefits to the plants through different mechanisms. Despite its classical involvement in root nodule symbiosis with leg...
Chapter
Plant growth-promoting rhizobacteria are a group of bacteria able to promote plant growth and increase crop productivity. For a successful and effective bacteria–plant association, microorganism colonization and its arrangement and abundance on plant root surfaces are very important. Here, we analysed the ability of the strain PEPV12 identified as...
Chapter
Bacterial endophytes live inside plants for at least part of their life cycle, because plants are very attractive as nutrient reservoirs for such bacteria. Plants need the presence of those associated bacteria for their growth and adaptation to different ecosystems. This is the case of maize, which is a well-known cereal crop for hosting a great di...
Article
A bacterial strain designated PM10T was isolated from root nodules of Periandra mediterranea in Brazil. Phylogenetic analyses based on 16S rRNA gene sequence placed the isolate in the genus Paenibacillus being its closest relatives P. vulneris and P. yunnanensis with 95.6 and 95.9 similarity, respectively. The isolate was a Gram-variable, motile an...
Article
Full-text available
The ClpB chaperone is known to be involved in bacterial stress response. Moreover, recent studies suggest that this protein has also a role in the chickpea-rhizobia symbiosis. In order to improve both stress tolerance and symbiotic performance of a chickpea microsymbiont, the Mesorhizobium mediterraneum UPM-Ca36T strain was genetically transformed...
Data
Qualitative assays of cellulose (A) and cellulase (B) production. Cellulose production was detected using Congo Red staining, and CMCase activity by double-layer plate assays after inoculation with 10 μL of each strain. 1. R. rhizogenes ATCC11325T, 2. R. cellulosilyticum ALA10B2T, 3. R. leguminosarum bv phaseoli TPV08, 4. R. pisi DSM30132T, 5. R. j...
Article
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The diversity of rhizobia that establish symbiosis with Lotus corniculatus has scarcely been studied. Several species of Mesorhizobium are endosymbionts of this legume, including Mesorhizobium loti, the type species of this genus. We analysed the genetic diversity of strains nodulating Lotus corniculatus in Northwest Spain and ten different RAPD pa...
Article
Full-text available
The Rhizobium-legume symbiosis is a complex partnership with many factors, with initial bacterial colonization of the plant root surface and primary infection as key early stages. Two molecules are strongly involved in these processes: the structural carbohydrate cellulose and the enzyme cellulase, which breaks down the former and allows rhizobia t...
Article
Full-text available
There is increasing interest in the use of plant growth-promoting rhizobacteria (PGPR) as environmental-friendly and healthy biofertilizers. Strawberries (Fragraria x ananassa) are mainly consumed fresh and hence any PGPRs used for biofertilization must be safe for humans, which is the case for members of the genus Rhizobium. In this study, the eff...
Chapter
Xy.la.ni.mo'nas. N.L. n. xylanum xylan a polysaccharide; Gr. fem. n. monas a monad, unit; N.L. fem. n. Xylanimonas a monad from xylan. Actinobacteria / Actinobacteria / Micrococcales / Promicromonosporaceae / Xylanimonas Gram-stain-positive, non-spore forming coccoid cells. Aerial mycelium is not formed. Aerobic or facultatively anaerobic, chemo-or...
Chapter
Rhizobia grow as free-living organisms but can also induce and colonize root nodules in legume plants thereby establishing a partnership that benefits both organisms. The establishment of rhizobia as nitrogen-fixing endosymbionts within legume root nodules requires plant root colonization and the disruption of the plant cell wall to breach the host...
Article
We isolated a strain coded Esc2AmT during a study focused on the microbial diversity of adult specimens of the bark beetle Hylesinus fraxini. Its 16S rRNA gene sequence had 99.4% similarity with respect to its closest relative Pseudomonas rhizosphaerae IH5T. The analysis of partial housekeeping genes rpoB, rpoD and gyrB genes confirmed that strain...
Article
Cicer canariense is a threatened endemic legume from the Canary Islands where it can be nodulated by mesorhizobial strains from the symbiovar ciceri, which is the common worldwide endosymbiont of Cicer arietinum linked to the genus Mesorhizobium. However, when C. canariense was cultivated in a soil from mainland Spain, where the symbiovar ciceri is...
Article
Full-text available
The increasing interest in the preservation of the environment and the health of consumers is changing production methods and food consumption habits. Functional foods are increasingly demanded by consumers because they contain bioactive compounds involved in health protection. In this sense biofertilization using plant probiotics is a reliable alt...
Article
The species Mesorhizobim loti was isolated from nodules of Lotus corniculatus and its type strain deposited in several collections. Some of these type strains are not coincident with the original strain deposited in NZP culture collection, NZP 2213T, such as those deposited in USDA and ATCC collections before 1990. The analysis of the 16S rRNA gene...
Article
The species Rhizobium lupini was isolated from Lupinus nodules and included in the Approved Lists of Bacterial Names in 1980. Nevertheless, on the basis of the analysis of the type strain of this species available in DSMZ, DSM 30140T, whose 16S rRNA gene was identical to that of the type strain of Bradyrhizobium japonicum, R. lupini was considered...
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