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Arroyo-Herrera I, Román-Ponce B, Bustamante-Brito R, Guevara-Luna J, Larios-Serrato V, Carro L, Mariano Igual J, Geiger O, Sánchez-Reyes A, Estrada-de Los Santos P, Wang ET, Vásquez-Murrieta MS. Microbacterium plantarum sp. nov. and Microbacterium thalli sp. nov., two endophytic metal-resistant bacteria isolated from Sphaeralcea angustifolia (Cav.) G. Don and Prosopis laevigata (Humb. et Bonpl. ex Willd) M.C. Johnston. Int J Syst Evol Microbiol 2023; 73. [PMID: 37754346 DOI: 10.1099/ijsem.0.006052] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023] Open
Abstract
Four Gram-positive, aerobic, catalase- and oxidase-negative, rod-shaped, motile endophytic bacterial strains, designated NM3R9T, NE1TT3, NE2TL11 and NE2HP2T, were isolated from the inner tissues (leaf and stem) of Sphaeralcea angustifolia and roots of Prosopis laevigata. They were characterized using a polyphasic approach, which revealed that they represent two novel Microbacterium species. Phylogenetic analysis based on 16S rRNA gene sequencing showed that the species closest to NE2HP2T was Microbacterium arborescens DSM 20754T (99.6 %) and that closest to NM3R9T, NE2TL11 and NE2TT3 was Microbacterium oleivorans NBRC 103075T (97.4 %). The whole-genome average nucleotide identity value between strain NM3R9T and Microbacterium imperiale DSM 20530T was 90.91 %, and that between strain NE2HP2T and M. arborecens DSM 20754T was 91.03 %. Digital DNA-DNA hybridization showed values of less than 70 % with the type strains of related species. The polar lipids present in both strains included diphosphatidylglycerol, phosphatidylglycerol, glycolipids and unidentified lipids, whereas the major fatty acids included anteiso-C15 : 0, anteiso-C17 : 0, iso-C16 : 0 and C16 : 0. Whole-cell sugars included mannose, rhamnose and galactose. Strains NM3R9T and NE2HP2T showed physiological characteristics different from those present in closely related Microbacterium species. According to the taxonomic analysis, both strains belong to two novel species. The name Microbacterium plantarum sp. nov. is proposed for strain NE2HP2T (=LMG 30875T=CCBAU 101117T) and Microbacterium thalli sp. nov. for strains NM3R9T (=LMG 30873T=CCBAU 101116T), NE1TT3 (=CCBAU 101114) and NE2TL11 (=CCBAU 101115).
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Affiliation(s)
- Ivan Arroyo-Herrera
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Prol. de Carpio y Plan de Ayala s/n, Col. Santo Tomás, Del Miguel Hidalgo, Mexico City, 11340, Mexico
| | - Brenda Román-Ponce
- Universidad Politécnica del Estado de Morelos. Boulevard Cuauhnáhuac #566, Col. Lomas del Texcal, Jiutepec, Morelos, 62550, Mexico
| | - Rafael Bustamante-Brito
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Colonia Chamilpa, Cuernavaca, Morelos, 62210, Mexico
| | - Joseph Guevara-Luna
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Prol. de Carpio y Plan de Ayala s/n, Col. Santo Tomás, Del Miguel Hidalgo, Mexico City, 11340, Mexico
| | - Violeta Larios-Serrato
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Prol. de Carpio y Plan de Ayala s/n, Col. Santo Tomás, Del Miguel Hidalgo, Mexico City, 11340, Mexico
| | - Lorena Carro
- Departamento de Microbiología y Genética, Facultad de CC Agrarias y Ambientales, Universidad de Salamanca, Plaza Doctores de la Reina, Lab 230, 37007, Salamanca, Spain
| | - Jose Mariano Igual
- Instituto de Recursos Naturales y Agrobiología de Salamanca, Consejo Superior de Investigaciones Científicas (IRNASA-CSIC), c/Cordel de Merinas 40-52, 37008, Salamanca, Spain
| | - Otto Geiger
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Colonia Chamilpa, Cuernavaca, Morelos, 62210, Mexico
| | - Ayixon Sánchez-Reyes
- Investigador por México, CONAHCYT-Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Colonia Chamilpa, Cuernavaca, Morelos, 62209, Mexico
| | - Paulina Estrada-de Los Santos
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Prol. de Carpio y Plan de Ayala s/n, Col. Santo Tomás, Del Miguel Hidalgo, Mexico City, 11340, Mexico
| | - En Tao Wang
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Prol. de Carpio y Plan de Ayala s/n, Col. Santo Tomás, Del Miguel Hidalgo, Mexico City, 11340, Mexico
| | - María Soledad Vásquez-Murrieta
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Prol. de Carpio y Plan de Ayala s/n, Col. Santo Tomás, Del Miguel Hidalgo, Mexico City, 11340, Mexico
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Carro L, Golinska P, Nouioui I, Bull AT, Igual JM, Andrews BA, Klenk HP, Goodfellow M. Micromonospora acroterricola sp. nov., a novel actinobacterium isolated from a high altitude Atacama Desert soil. Int J Syst Evol Microbiol 2019; 69:3426-3436. [PMID: 31395106 DOI: 10.1099/ijsem.0.003634] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Micromonospora strain, designated 5R2A7T, isolated from a high altitude Atacama Desert soil was examined by using a polyphasic approach. Strain 5R2A7T was found to have morphological, chemotaxonomic and cultural characteristics typical of members of the genus Micromonospora. The cell wall contains meso- and hydroxy-diaminopimelic acid, the major whole-cell sugars are glucose, ribose and xylose, the predominant menaquinones MK-10(H4), MK-10(H6), MK-10(H8) and MK-9(H6), the major polar lipids diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol and an unknown glycolipid, and the predominant cellular fatty acids iso-C16 : 0, iso-C15 : 0 and 10-methyl C17 : 0. The digital genomic DNA G+C content is 72.3 mol%. Phylogenetic analysis of the 16S rRNA gene sequence indicated that strain 5R2A7T was closely related to Micromonospora coriariae DSM 44875T (99.8 %) and Micromonospora cremea CR30T (99.7 %), and was separated readily from the latter, its closest phylogenetic neighbour, based on gyrB and multilocus sequence data, by low average nucleotide identity (92.59 %) and in silico DNA-DNA relatedness (51.7 %) values calculated from draft genome assemblies and by a range of chemotaxonomic and phenotypic properties. Consequently, strain 5R2A7T is considered to represent a novel species of Micromonospora for which the name Micromonospora acroterricola sp. nov. is proposed. The type strain is 5R2A7T (=LMG 30755T=CECT 9656T).
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Affiliation(s)
- Lorena Carro
- School of Natural and Environmental Sciences, Ridley Building 2, Newcastle University, Newcastle upon Tyne NE1 7RU, UK.,Departamento de Microbiología y Genética, Edificio Departamental, Lab. 214, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain
| | - Patrycja Golinska
- Department of Microbiology, Faculty of Biology and Environmental Protection, Nicolaus Copernicus University, Lwowska 1, 87 100 Torun, Poland
| | - Imen Nouioui
- School of Natural and Environmental Sciences, Ridley Building 2, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
| | - Alan T Bull
- School of Biosciences, University of Kent, Canterbury CT2 7NJ, UK
| | - Jose Mariano Igual
- Instituto de Recursos Naturales y Agrobiología de Salamanca, Consejo Superior de Investigaciones Científicas (IRNASA-CSIC), c/Cordel de Merinas 40-52, 37008 Salamanca, Spain
| | - Barbara A Andrews
- Department of Chemical Engineering and Biotechnology, Centre for Biotechnology and Bioengineering (CeBiB) University of Chile, Santiago, Chile
| | - Hans-Peter Klenk
- School of Natural and Environmental Sciences, Ridley Building 2, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
| | - Michael Goodfellow
- School of Natural and Environmental Sciences, Ridley Building 2, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
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Ramírez-Bahena MH, Flores-Félix JD, Cuesta MJ, Tejedor Gil C, Palomo JL, García Benavides P, Igual JM, Fernández Pascual M, Velázquez E, Peix A. Fontibacillus solani sp. nov. isolated from potato (Solanum tuberosum L.) root. Antonie Van Leeuwenhoek 2015; 107:1315-21. [PMID: 25772303 DOI: 10.1007/s10482-015-0426-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 03/05/2015] [Indexed: 11/24/2022]
Abstract
A bacterial strain designated A4STR04(T) was isolated from the inner root tissue of potatoes in Spain. Phylogenetic analysis based on the 16S rRNA gene sequence placed the isolate into the genus Fontibacillus, being most closely related to Fontibacillus panacisegetis KCTC 13564(T) with 99% identity. The isolate was observed to form Gram-positive, motile and sporulating rods. The catalase test was found to be negative and oxidase positive. Nitrate was found to be reduced to nitrite. β-Galactosidase and caseinase were observed to be produced but the production of gelatinase, urease, arginine dehydrolase, ornithine and lysine decarboxylase was negative. Aesculin hydrolysis was found to be positive and acetoin production was negative. Growth was found to be supported by many carbohydrates and organic acids as carbon source. MK-7 was the only menaquinone detected and the major fatty acid (61.5%) was identified as anteiso-C(15:0), as occurs in the other species of genus Fontibacillus. The strain A4STR04(T) was found to display a complex lipid profile consisting of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, a glycolipid, two phospholipids, a lipid and two aminophospholipids. Mesodiaminopimelic acid was detected in the peptidoglycan. The G+C content was determined to be 50.5 mol% (Tm). Phylogenetic, chemotaxonomic and phenotypic analyses showed that strain A4STR04(T) (=LMG 28458 (T) = CECT 8693(T)) should be classified as representing a novel species of genus Fontibacillus, for which the name Fontibacillus solani sp. nov. is proposed.
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Affiliation(s)
- Martha-Helena Ramírez-Bahena
- Instituto de Recursos Naturales y Agrobiología de Salamanca, Consejo Superior de Investigaciones Científicas (IRNASA-CSIC), c/Cordel de Merinas 40-52, 37008, Salamanca, Spain
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García-Balboa C, Baselga-Cervera B, García-Sanchez A, Igual JM, Lopez-Rodas V, Costas E. Rapid adaptation of microalgae to bodies of water with extreme pollution from uranium mining: an explanation of how mesophilic organisms can rapidly colonise extremely toxic environments. Aquat Toxicol 2013; 144-145:116-123. [PMID: 24177214 DOI: 10.1016/j.aquatox.2013.10.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 09/18/2013] [Accepted: 10/02/2013] [Indexed: 06/02/2023]
Abstract
Extreme environments may support communities of microalgae living at the limits of their tolerance. It is usually assumed that these extreme environments are inhabited by extremophile species. However, global anthropogenic environmental changes are generating new extreme environments, such as mining-effluent pools of residual waters from uranium mining with high U levels, acidity and radioactivity in Salamanca (Spain). Certain microalgal species have rapidly adapted to these extreme waters (uranium mining in this area began in 1960). Experiments have demonstrated that physiological acclimatisation would be unable to achieve adaptation. In contrast, rapid genetic adaptation was observed in waters ostensibly lethal to microalgae by means of rare spontaneous mutations that occurred prior to the exposure to effluent waters from uranium mining. However, adaptation to the most extreme conditions was only possible after recombination through sexual mating because adaptation requires more than one mutation. Microalgae living in extreme environments could be the descendants of pre-selective mutants that confer significant adaptive value to extreme contamination. These "lucky mutants" could allow for the evolutionary rescue of populations faced with rapid environmental change.
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Affiliation(s)
- C García-Balboa
- Genetica, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain
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Velázquez E, Igual JM, Willems A, Fernández MP, Muñoz E, Mateos PF, Abril A, Toro N, Normand P, Cervantes E, Gillis M, Martínez-Molina E. Mesorhizobium chacoense sp. nov., a novel species that nodulates Prosopis alba in the Chaco Arido region (Argentina). Int J Syst Evol Microbiol 2001; 51:1011-1021. [PMID: 11411668 DOI: 10.1099/00207713-51-3-1011] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Low-molecular-weight RNA analysis was performed for the identification and classification of 20 Argentinian strains isolated from the root nodules of Prosopis alba. SDS-PAGE of total cellular proteins, determination of the DNA base composition, DNA-DNA reassociation experiments and physiological and biochemical tests were also carried out for these strains and the whole 16S rRNA gene was sequenced from one of the strains, strain LMG 19008T. Results of the genotypic and phenotypic characterization showed that the strains isolated in this study belong to a group that clustered in the genus Mesorhizobium. The results of DNA-DNA hybridizations showed that this group is a novel species of this genus. The name Mesorhizobium chacoense sp. nov. is proposed for this species. The type strain is LMG 19008T (= CECT 5336T).
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Velázquez E, Cervantes E, Igual JM, Peix A, Mateos PF, Benamar S, Moiroud A, Wheeler CT, Dawson J, Labeda D, Rodríguez-Barrueco C, Martínez-Molina E. Analysis of LMW RNA profiles of Frankia strains by staircase electrophoresis. Syst Appl Microbiol 1998; 21:539-45. [PMID: 9924822 DOI: 10.1016/s0723-2020(98)80066-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
An optimized technique of polyacrylamide gel electrophoresis, Staircase Electrophoresis (SCE), was applied to determine the stable Low Molecular Weight RNA (LMW RNA) profiles of 25 Frankia strains from diverse geographic origins and host specificity groups as well as species from other actinomycete genera. Application of the technique permits the rapid identification of Frankia strains and their differentiation from other actinomycetes. The isolates used in this study were grouped in eight clusters, each comprising strains with identical LMW RNA profiles. Comparison of these results with others obtained from DNA sequences or DNA hybridization methods suggest a high degree of complexity in the genus Frankia. Application of SCE to profile LMW RNA should in the future facilitate biodiversity studies of Frankia and discrimination of new species.
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