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| Registros recuperados: 22 | |
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| ÁLVAREZ,CLAUDIA L; OSORIO,NELSON W; MARÍN MONTOYA,MAURICIO. |
| El cultivo de vainilla es altamente promisorio en Colombia, pero se requiere mayor conocimiento de su manejo agronómico y de los microorganismos que crecen asociados a su rizosfera, de los cuales depende esta planta para su nutrición y crecimiento. En este trabajo se realizaron aislamientos de microorganismos de la rizosfera de plantas de vainilla en un cultivo piloto ubicado en el municipio de Sopetrán (Antioquia, Colombia). Los microorganismos se aislaron en medios selectivos de crecimiento para evaluar su capacidad para descomponer celulosa, proteínas, solubilizar fosfato inorgánico y orgánico (fitato) y fijar nitrógeno en forma asimbiótica. Una vez aislados y purificados, se obtuvieron un total de 109 aislamientos, de los cuales se seleccionaron 52... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ADNr; Filogenia; PCR; PGPR; Vanilla planifolia. |
| Ano: 2013 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200007 |
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| CESA-LUNA,Catherine; BAEZ,Antonino; QUINTERO-HERNÁNDEZ,Verónica; CRUZ-ENRÍQUEZ,Joel DE LA; CASTAÑEDA-ANTONIO,Ma Dolores; MUÑOZ-ROJAS,Jesús. |
| ABSTRACT Bacteria produce antimicrobial compounds to compete for nutrients and space in a particular habitat. Antagonistic interactions can be evaluated by several methodologies including the double-layer agar and simultaneous inhibition assays. Among the well-known inhibitory substances produced by bacteria are the broad-spectrum antibiotics, organic acids, siderophores, antifungal, and bacteriocins. The most studied bacterial genera able to produce these inhibitory substances are Enterococcus, Lactococcus, Streptomyces, Bacillus, Pseudomonas, Klebsiella, Escherichia, and Burkholderia. Some beneficial bacteria can promote plant growth and degrade toxic compounds in the environment representing an attractive solution to diverse issues in agriculture and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antagonism; Antibiotic; Competition; Inhibition; PGPR. |
| Ano: 2020 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2020000100140 |
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| Abraham-Juárez,Ma. del Rosario; Espitia-Vázquez,Isidro; Guzmán-Mendoza,Rafael; Olalde-Portugal,Víctor; Ruiz-Aguilar,Graciela M. de la L.; García-Hernández,José L.; Herrera-Isidrón,Lisset; Núñez-Palenius,Héctor G.. |
| Abstract Strains of Bacillus subtilis increase plant growth and yield. Consequently, the application of Mexican native strains of B. subtilis on greenhouse-grown melon (Cucumis melo L.) plants should induced a significant improvement on plant development and fruit quality. The objective of this study was to evaluate the effect of LAL-36, BEB-23, BEB-22 and BEB-13 B. subtilis strains, native to Mexico, on melon plant development and fruit quality. The strains were placed separately into the rhizosphere of melon plants under greenhouse conditions. Plants were grown in clinoptilolite type zeolite. Five treatments were evaluated: four inoculated with one of the four B. subtilis strains and one control without bacterial inoculum. A completely randomized design... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zeolite; PGPR; Protected agriculture; Postharvest; Cucurbits. |
| Ano: 2018 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952018000100091 |
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| ERTURK,YASAR; ERCISLI,SEZAI; HAZNEDAR,AYHAN; CAKMAKCI,RAMAZAN. |
| The effects of plant growth promoting rhizobacteria (PGPR) on the rooting and root growth of semi-hardwood and hardwood kiwifruit stem cuttings were investigated. The PGPR used were Bacillus RC23, Paenibacillus polymyxa RC05, Bacillus subtilis OSU142, Bacillus RC03, Comamonas acidovorans RC41, Bacillus megaterium RC01 and Bacillus simplex RC19. All the bacteria showed indole-3-acetic acid (IAA) producing capacity. Among the PGPR used, the highest rooting ratios were obtained at 47.50% for semi-hardwood stem cuttings from Bacillus RC03 and Bacillus simplex RC19 treatments and 42.50% for hardwood stem cuttings from Bacillus RC03. As well, Comamonas acidovorans RC41 inoculations indicated higher value than control treatments. The results suggest that these... |
| Tipo: Journal article |
Palavras-chave: PGPR; Stem cuttings; Kiwifruit; Rooting; Auxin. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000100011 |
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| Rizvi,Rose; Mahmood,Irshad; Tiyagi,Sartaj A; Khan,Zehra. |
| Soil application of organics has been explored as an alternative means of organic management of plant-parasitic nematodes. Efficiency of different oil-seed cakes of neem (Azadirachta indica), castor (Ricinus communis), groundnut (Arachis hypogaea), linseed (Linum usitatissimum), sunflower (Helianthus annuus) and soybean (Glycine max) were evaluated in field conditions with association of Pseudomonas fluorescens in relation to growth parameters of chickpea and population of plant-parasitic nematodes. Their efficacious nature was highly effective in reducing the population of these dominant soil nematodes. Significant improvement was observed in plant-growth parameters such as plant weight, percent pollen fertility, pod numbers, root-nodulation and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chickpea; Oil-seed cakes; Organic management; Plant-parasitic nematodes; PGPR. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000600001 |
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| Naeem,Muhammad; Aslam,Zubair; Khaliq,Abdul; Ahmed,Jam Nazir; Nawaz,Ahmad; Hussain,Mubshar. |
| Abstract Plant growth promoting rhizobacteria increase plant growth and give protection against insect pests and pathogens. Due to the negative impact of chemical pesticides on environment, alternatives to these chemicals are needed. In this scenario, the biological methods of pest control offer an eco-friendly and an attractive option. In this study, the effect of two plant growth promoting rhizobacterial strains (Bacillus sp. strain 6 and Pseudomonas sp. strain 6K) on aphid population and wheat productivity was evaluated in an aphid susceptible (Pasban-90) and resistant (Inqlab-91) wheat cultivar. The seeds were inoculated with each PGPR strain, separately or the combination of both. The lowest aphid population (2.1 tiller−1), and highest plant height... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pseudomonas; Bacillus; Aphid; Bread wheat; PGPR; Eco-friendly. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500009 |
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| Zarpelon,Talyta Galafassi; Guimarães,Lúcio Mauro da Silva; Alfenas-Zerbini,Poliane; Lopes,Eli Sidney; Mafia,Reginaldo Gonçalves; Alfenas,Acelino Couto. |
| Abstract Plant growth-promoting rhizobacteria strains from special formulations have been used to optimize eucalyptus cutting production. To undertake quality control for the formulated products, the rhizobacterial strains should be characterized to assess their purity and authentication. In the present study, we characterized nine strains of rhizobacteria, including three Bacillus subtilis (S1, S2 and 3918), two Pseudomonas sp. (MF4 and FL2), P. putida (MF2), P. fulva (Ca), Frateuria aurantia (R1), and Stenotrophomonas maltophilia (CIIb). The strains were differentiated by colony morphology after 24 h of incubation in three different solid state culture media (glucose-nutritive agar, 523 medium and yeast extract-mannitol agar), sensitivity to a panel of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Formulation; PGPR; Eucalyptus; Biological product. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000400973 |
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| Jadon,Kuldeep Singh; Shah,Rakesh; Gour,Hari Narayan; Sharma,Pankaj. |
| Abstract Sweet or bell pepper is a member of the Solanaceae family and is regarded as one of the most popular and nutritious vegetable. Blight, in the form of leaf and fruit blight, has been observed to infect bell pepper crops cultivated at the horticulture farm in Rajasthan College of Agriculture, Udaipur, India. Based on disease severity, we attempted to curb this newly emerged problem using different fungicides, plant extracts, bio-control agents, and commercial botanicals against the fungus in laboratory and pot experiments. Bio-control agent Trichoderma viride and plant growth promoting Rhizobacteria (PGPR) isolate Neist-2 were found to be quite effective against bell pepper blight. All evaluated fungicides, botanicals, commercial botanicals, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant extracts; Bio-control agents; Trichoderma; PGPR; Botanicals; Neem oil; Zatropin; Fungicides. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000401020 |
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| Naveed,Muhammad; Ahmed,Iftikhar; Khalid,Nauman; Mumtaz,Abdul Samad. |
| Glucose dehydrogenase (GDH; EC 1.1. 5.2) is the member of quinoproteins group that use the redox cofactor pyrroloquinoline quinoine, calcium ions and glucose as substrate for its activity. In present study, Leclercia sp. QAU-66, isolated from rhizosphere of Vigna mungo, was characterized for phosphate solubilization and the role of GDH in plant growth promotion of Phaseolus vulgaris. The strain QAU-66 had ability to solubilize phosphorus and significantly (p < 0.05) promoted the shoot and root lengths of Phaseolus vulgaris. The structural determination of GDH protein was carried out using bioinformatics tools like Pfam, InterProScan, I-TASSER and COFACTOR. These tools predicted the structural based functional homology of pyrroloquinoline quinone domains... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glucose dehydrogenase; Pyrroloquinoline quinone; Leclercia sp; PGPR; Bioinformatics. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200031 |
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| Braga,Lívia Fabiana; Oliveira,Fênix Araújo de; Couto,Eva Aparecida Prado do; Santos,Karina Freire d'Eça Nogueira; Ferreira,Enderson Petrônio de Brito; Martin-Didonet,Claudia Cristina Garcia. |
| ABSTRACT This work aimed to characterize 20 isolates obtained from upland rice plants, based on phenotypic (morphology, enzymatic activity, inorganic phosphate solubilization, carbon source use, antagonism), genotypic assays (16S rRNA sequencing) and plant growth promotion. Results showed a great morphological, metabolic and genetic variability among bacterial isolates. All isolates showed positive activity for catalase and protease enzymes and, 90% of the isolates showed positive activity for amylase, catalase and, nitrogenase. All isolates were able to metabolize sucrose and malic acid in contrast with mannitol, which was metabolized only by one isolate. For the other carbon sources, we observed a great variability in its use by the isolates. Most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; PGPR; Associative bacteria; Bacterial diversity. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000100020 |
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| Chauhan,Anjali; Guleria,Shiwani; Balgir,Praveen P.; Walia,Abhishek; Mahajan,Rishi; Mehta,Preeti; Shirkot,Chand Karan. |
| Abstract Aneurinibacillus aneurinilyticus strain CKMV1 was isolated from rhizosphere of Valeriana jatamansi and possessed multiple plant growth promoting traits like production of phosphate solubilization (260 mg/L), nitrogen fixation (202.91 nmol ethylene mL-1 h-1), indole-3-acetic acid (IAA) (8.1 µg/mL), siderophores (61.60%), HCN (hydrogen cyanide) production and antifungal activity. We investigated the ability of isolate CKMV1 to solubilize insoluble P via mechanism of organic acid production. High-performance liquid chromatography (HPLC) study showed that isolate CKMV1 produced mainly gluconic (1.34%) and oxalic acids. However, genetic evidences for nitrogen fixation and phosphate solubilization by organic acid production have been reported first time... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Valeriana jatamansi; Phosphate solubilization; Nitrogen fixation; Glucose dehydrogenase; Aneurinibacillus aneurinilyticus; PGPR. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200294 |
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| Sharifi,Raouf Seyed; Namvar,Ali; Sharifi,Reza Seyed. |
| Abstract: The objective of this work was to evaluate the effects of the integrated application of nitrogen fertilizer and biofertilizers on the yield, grain filling period, and composition of fatty acids of safflower (Carthamus tinctorius). Split-plot experiments were carried out during the 2011 and 2012 crop seasons. The treatments consisted of seed inoculation with plant growth-promoting rhizobacteria (Azotobacter chroococcum strain 5, Azospirillum lipoferum strain F, and Pseudomonas putida strain 186) in the subplots, including a control without seed inoculation; and of the application of N fertilizer at different rates (60, 120, and 180 kg ha-1 urea) in the main plots, including a control without N. The highest grain yield, grain filling period, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carthamus tinctorius; Pseudomonas putida; Oil quality; PGPR; Fatty acids; Seed-inoculation.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000400236 |
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| Lira-Saldivar,RH; Hernández,A; Valdez,LA; Cárdenas,A; Ibarra,L; Hernández,M; Ruiz,N. |
| Se evaluó la respuesta del cultivo de tomate cherry a la biofertilización con microorganismos benéficos bajo condiciones de casasombra. Las semillas fueron inoculadas y co-inoculadas con Azospirillum brasilense (Az) y/o Glomus intraradices (Gi); después del trasplante, las plántulas de seis tratamientos recibieron dos aplicaciones de una solución conteniendo Az + Gi, y fueron comparadas contra el tratamiento testigo que solo recibió fertilización tradicional (NPK). La co-inoculación de las semillas con A. brasilense y G. intraradices más dos aplicaciones de Az + Gi a los 15 y 30 días después del trasplante, incrementaron en promedio 6% la altura de plantas, 11% el área foliar, 10,5% la biomasa seca y 16% el rendimiento de tomate cherry en comparación con... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Micorrizas arbusculares; PGPR; Biofertilizantes; Solanum lycopersicon. |
| Ano: 2014 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572014000100017 |
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| Picazevicz,Angelita A. C.; Kusdra,Jorge F.; Moreno,Andréia de L.. |
| ABSTRACT The objective of this research was to evaluate the effect of Azospirillum brasilense, Rhizobium tropici, nitrogen (N) and molybdenum (Mo) fertilization on maize growth. The experiment was carried out in a greenhouse from October to November 2015, in a completely randomized design, in 2 x 2 x 2 x 5 factorial scheme, with 5 replicates, corresponding to the absence and presence of Azospirillum brasilense, Rhizobium tropici, N (30 kg ha-1) and five Mo doses (0, 7.5, 15.0, 22.5 and 30.0 g ha-1). The analyzed variables were: plant height, basal stem diameter, dry biomass of shoots, roots, total and N accumulated in the shoots. There was double or triple interaction between N fertilization, Azospirillum brasilense and Rhizobium tropici for the evaluated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; PGPR; Diazotrophic microorganisms; Co-inoculation; BNF. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000900623 |
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| Soares,Vanessa Nogueira; Tillmann,Maria Ângela André; Moura,Andréa Bittencourt; Zanatta,Zarela Gudelia Casas Navarro. |
| Development of new technologies, aiming at increasing productivity in different crops, involves constant research on the effectiveness and application of these techniques in seed treatment. In this study, it was aimed at evaluating physiological potential of rice seeds treated with plant growth-promoting rhizobacteria (PGPR) (strains DFs185, DFs223, DFs306, DFs416), or with two dosages of the insecticide thiamethoxam. The variables assessed were: germination (G); first count of germination (FCG); cold test (CT); length of seedlings aerial parts (LAP), root system (LRS), and total length (TL); emergence speed index (ESI); emergence (E), at 14 days; and dry phytomass (DP). Treatments have had a positive effect on percentage of G, FCG and E. The strain DFs185... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Bioactivator; PGPR; Vigor. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000400006 |
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| Registros recuperados: 22 | |
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