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  • 1
    Language: English
    In: Antonie van Leeuwenhoek, January 2013, Vol.103(1), pp.1-2
    Description: Byline: Iain C. Sutcliffe (1), Martha E. Trujillo (2) Author Affiliation: (1) School of Life Sciences, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK (2) Departamento de Microbiologia y Genetica, Campus Miguel de Unamuno, Universidad de Salamanca, 37007, Salamanca, Spain Article History: Registration Date: 14/08/2012 Online Date: 04/09/2012
    Keywords: Editorial Policies ; Periodicals As Topic ; Bacteria -- Classification
    ISSN: 00036072
    E-ISSN: 1572-9699
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  • 2
    Language: English
    In: Journal of bacteriology, August 2012, Vol.194(15), pp.4135
    Description: Micromonospora strains have been isolated from diverse niches, including soil, water, and marine sediments and root nodules of diverse symbiotic plants. In this work, we report the genome sequence of Micromonospora lupini Lupac 08 isolated from root nodules of the wild legume Lupinus angustifolious.
    Keywords: Genome, Bacterial ; Sequence Analysis, DNA ; DNA, Bacterial -- Chemistry ; Lupinus -- Microbiology ; Micromonospora -- Genetics ; Root Nodules, Plant -- Microbiology
    ISSN: 00219193
    E-ISSN: 1098-5530
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  • 3
    In: PLoS ONE, 2014, Vol.9(8)
    Description: Rhizosphere competence of bacterial inoculants is assumed to be important for successful biocontrol. Knowledge of factors influencing rhizosphere competence under field conditions is largely lacking. The present study is aimed to unravel the effects of soil types on the rhizosphere competence and biocontrol activity of the two inoculant strains Pseudomonas jessenii RU47 and Serratia plymuthica 3Re4-18 in field-grown lettuce in soils inoculated with Rhizoctonia solani AG1-IB or not. Two independent experiments were carried out in 2011 on an experimental plot system with three soil types sharing the same cropping history and weather conditions for more than 10 years. Rifampicin resistant mutants of the inoculants were used to evaluate their colonization in the rhizosphere of lettuce. The rhizosphere bacterial community structure was analyzed by denaturing gradient gel electrophoresis of 16S rRNA gene fragments amplified from total community DNA to get insights into the effects of the inoculants and R. solani on the indigenous rhizosphere bacterial communities. Both inoculants showed a good colonization ability of the rhizosphere of lettuce with more than 10 6 colony forming units per g root dry mass two weeks after planting. An effect of the soil type on rhizosphere competence was observed for 3Re4-18 but not for RU47. In both experiments a comparable rhizosphere competence was observed and in the presence of the inoculants disease symptoms were either significantly reduced, or at least a non-significant trend was shown. Disease severity was highest in diluvial sand followed by alluvial loam and loess loam suggesting that the soil types differed in their conduciveness for bottom rot disease. Compared to effect of the soil type of the rhizosphere bacterial communities, the effects of the pathogen and the inoculants were less pronounced. The soil types had a surprisingly low influence on rhizosphere competence and biocontrol activity while they significantly affected the bottom rot disease severity.
    Keywords: Research Article ; Biology And Life Sciences
    E-ISSN: 1932-6203
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  • 4
    Language: English
    In: PLoS ONE, 01 January 2014, Vol.9(9), p.e108522
    Description: Endophytic microorganisms live inside plants for at least part of their life cycle. According to their life strategies, bacterial endophytes can be classified as "obligate" or "facultative". Reports that members of the genus Micromonospora, Gram-positive Actinobacteria, are normal occupants of nitrogen-fixing nodules has opened up a question as to what is the ecological role of these bacteria in interactions with nitrogen-fixing plants and whether it is in a process of adaptation from a terrestrial to a facultative endophytic life. The aim of this work was to analyse the genome sequence of Micromonospora lupini Lupac 08 isolated from a nitrogen fixing nodule of the legume Lupinus angustifolius and to identify genomic traits that provide information on this new plant-microbe interaction. The genome of M. lupini contains a diverse array of genes that may help its survival in soil or in plant tissues, while the high number of putative plant degrading enzyme genes identified is quite surprising since this bacterium is not considered a plant-pathogen. Functionality of several of these genes was demonstrated in vitro, showing that Lupac 08 degraded carboxymethylcellulose, starch and xylan. In addition, the production of chitinases detected in vitro, indicates that strain Lupac 08 may also confer protection to the plant. Micromonospora species appears as new candidates in plant-microbe interactions with an important potential in agriculture and biotechnology. The current data strongly suggests that a beneficial effect is produced on the host-plant.
    Keywords: Sciences (General)
    E-ISSN: 1932-6203
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  • 5
    Language: English
    In: Antonie van Leeuwenhoek, 2015, Vol.108(2), pp.311-320
    Description: A polyphasic study was undertaken to establish the taxonomic status of two Modestobacter strains isolated from the surface of deteriorated sandstone of a historic building in Salamanca, Spain. The strains, isolates MDVD1 T and MON 3.1 T , were found to have chemotaxonomic and morphological properties consistent with their classification in the genus Modestobacter and to form distinct phyletic lines in the Modestobacter 16S rRNA gene tree. Isolate MDVD1 T was found to be closely related to the type strain of Modestobacter versicolor (98.7 % similarity) and isolate MON 3.1 T to the type strain of Modestobacter multiseptatus (98.6 % similarity). The isolates were distinguished readily from one another and from the Modestobacter type strains by a broad range of phenotypic properties, by qualitative and quantitative differences in fatty acid profiles and by BOX fingerprint patterns. On the basis of these data, it is proposed that the isolates be classified in the genus Modestobacter as Modestobacter lapidis sp. nov. and Modestobacter muralis sp. nov., with isolates MON 3.1 T (CECT 8844 T  = DSM 100206 T ) and MDVD1 T (CECT 8845 T  = DSM 100205 T ) as the respective type strains.
    Keywords: Modestobacter ; Polyphasic taxonomy ; Deteriorating sandstone
    ISSN: 0003-6072
    E-ISSN: 1572-9699
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  • 6
    Language: English
    In: Journal of Biosciences, 2013, Vol.38(4), pp.685-693
    Description: Actinorhizal plants have been found in eight genera belonging to three orders (Fagales, Rosales and Cucurbitales). These all bear root nodules inhabited by bacteria identified as the nitrogen-fixing actinobacterium Frankia . These nodules all have a peripheral cortex with enlarged cells filled with Frankia hyphae and vesicles. Isolation in pure culture has been notoriously difficult, due in a large part to the growth of fast-growing contaminants where, it was later found, Frankia was slow-growing. Many of these contaminants, which were later found to be Micromonospora , were obtained from Casuarina and Coriaria . Our study was aimed at determining if Micromonospora were also present in other actinorhizal plants. Nodules from Alnus glutinosa , Alnus viridis , Coriaria myrtifolia , Elaeagnus x ebbingei , Hippophae rhamnoides , Myrica gale and Morella pensylvanica were tested and were all found to contain Micromonospora isolates. These were found to belong to mainly three species: Micromonospora lupini , Micromonospora coriariae and Micromonospora saelicesensis . Micromonospora isolates were found to inhibit some Frankia strains and to be innocuous to other strains.
    Keywords: Alnus ; Elaeagnus ; Frankia ; Hippophae ; Micromonospora ; Myrica
    ISSN: 0250-5991
    E-ISSN: 0973-7138
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  • 7
    Language: English
    In: Systematic and Applied Microbiology, March 2012, Vol.35(2), pp.73-80
    Description: It was recently reported that inhabits the intracellular tissues of nitrogen fixing nodules of the wild legume . To determine if populations are also present in nitrogen fixing nodules of cultivated legumes such as , we carried out the isolation of this actinobacterium from plants collected in two man-managed fields in the region of Castilla and León (Spain). In this work, we describe the isolation of 93 strains recovered from nitrogen fixing nodules and the rhizosphere of . The genomic diversity of the strains was analyzed by amplified ribosomal DNA restriction analysis (ARDRA). Forty-six isolates and 34 reference strains were further analyzed using a multilocus sequence analysis scheme developed to address the phylogeny of the genus and to evaluate the species distribution in the two studied habitats. The MLSA results were evaluated by DNA–DNA hybridization to determine their usefulness for the delineation of at the species level. In most cases, DDH values below 70% were obtained with strains that shared a sequence similarity of 98.5% or less. Thus, MLSA studies clearly supported the established taxonomy of the genus and indicated that genomic species could be delineated as groups of strains that share 〉98.5% sequence similarity based on the 5 genes selected. The species diversity of the strains isolated from both the rhizosphere and nodules was very high and in many cases the new strains could not be related to any of the currently described species.
    Keywords: Mlsa ; Micromonospora ; Pisum Sativum ; Nodule ; Rhizosphere ; Biology
    ISSN: 0723-2020
    E-ISSN: 1618-0984
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  • 8
    Language: English
    In: International journal of systematic and evolutionary microbiology, April 2018, Vol.68(4), pp.977-978
    Keywords: Salami Publication ; Salami Slicing
    ISSN: 14665026
    E-ISSN: 1466-5034
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  • 9
    Language: English
    In: Antonie van Leeuwenhoek: International Journal of General and Molecular Microbiology, Jan, 2012, Vol.101(1), p.1(2)
    Description: Byline: Iain C. Sutcliffe (1), Martha E. Trujillo (2), Michael Goodfellow (3) Author Affiliation: (1) School of Life Sciences, Northumbria University, Newcastle Upon Tyne, NE1 8ST, UK (2) Departamento de Microbiologia y Genetica, Campus Miguel de Unamuno, Universidad de Salamanca, 37007, Salamanca, Spain (3) School of Biology, University of Newcastle, Newcastle Upon Tyne, NE1 7RU, UK Article History: Registration Date: 04/11/2011 Received Date: 03/11/2011 Accepted Date: 04/11/2011 Online Date: 12/11/2011
    Keywords: Universities And Colleges
    ISSN: 0003-6072
    E-ISSN: 15729699
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  • 10
    Language: English
    In: Antonie van Leeuwenhoek, 2012, Vol.101(1), pp.13-20
    Description: Prokaryotic systematics is a fundamentally important discipline that provides a framework for the activities of all microbiologists. Here we propose that the field has become mired in a sea of perceived rules and regulations, many of which stipulate what is considered ‘sufficient’ for the phenotypic characterisation of novel prokaryotic taxa. Importantly, we argue also that the principles and practise of prokaryotic systematics have not yet fully embraced the revolution in biological understanding that has occurred through the availability of huge numbers of whole genome sequences. We therefore propose that a significant reappraisal of the procedures used to describe novel prokaryotic taxa is needed, including the likely introduction of new publication formats. Urgent action is needed to revitalise the practise of prokaryotic systematics in order to maintain this discipline as an attractive career choice for twenty first century life scientists.
    Keywords: Bacterial species ; Chemotaxonomy ; Microbial diversity ; Phylogeny ; Systematics ; Taxonomy
    ISSN: 0003-6072
    E-ISSN: 1572-9699
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