Potencial de rizobactérias na promoção de crescimento e controle da podridãoradicular em alface hidropônica

Cipriano, Matheus Aparecido Pereira; Patrício, Flávia Rodrigues Alves; Freitas, Sueli dos Santos

doi:10.1590/s0100-54052013000100009

Cited by 7 publications

(5 citation statements)

References 27 publications

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“…These benefits are due to the production of phytohormones, such as IAA, which can be synthesized by these microorganisms, as well as hydrocyanic acid (HCN), a volatile compound that inhibits phytopathogen development. In addition, phosphate solubilization and biological nitrogen fixation also collaborate with plant growth (GUIMARÃES et al, 2012;CIPRIANO, 2013;AHEMAD;KIBRET, 2014). Coelho et al (2008) found that the lettuce rhizosphere has the highest number of Pseudomonas sp.…”

Section: Resultsmentioning

confidence: 99%

Combined effect of Pseudomonas sp. and Trichoderma aureoviride on lettuce growth promotion

Filho¹,

Medeiros²,

Barbosa³

et al. 2019

Biosci. J.

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Plant growth promotion by microorganisms may be a viable alternative to increase lettuce production through pathogens control and nutrients absorption increase. Trichoderma and Pseudomonas genus are examples of widely studied microorganisms with the capacity to promote plant growth. However, there are still gaps regarding the action of the combined effect of these two microorganisms. Therefore, the objective of this study was to evaluate the combined effect of Pseudomonas sp. UAGF14 and Trichoderma aureoviride URM5158 on the development of lettuce plants. The experimental design was completely randomized, with five treatments: CONT (control), CM (soil with organic fertilization), CMB (soil with organic fertilization and Pseudomonas sp.), CMF (soil with organic fertilization and T. aureoviride), and CMFB (soil with organic fertilization, Pseudomonas sp. and T. aureoviride), with ten repetitions. At 30, 40 and 60 days after sowing, the following parameters were analyzed: plant and canopy height and number of leaves. At 60 days after emergence, shoot dry matter, leaf area, root dry matter, root length and chlorophyll were analyzed. Catalase, peroxidase and polyphenol oxidase enzymatic activity were determined. The CMFB treatment had the highest means of lettuce growth promotion, confirming the synergistic effect of the combination of the two microorganism types, as it increased height, canopy, shoot and root dry matter, and chlorophyll levels compared to CONT, although did not differ from CM in some variables. Enzymatic activity was also influenced by the action of these microorganisms combined, evidencing by polyphenol oxidase increase. The CMFB or CM were efficient in promoting lettuce growth, showing positive response to the plant morphological and physiological characteristics. However, few responses were observed in lettuce plant growth in the first cycle evaluated after 60 days, compared CM and CMFB treatments, but both treatments showed superiority in lettuce plant growth submitted to CONT treatment. Therefore, further studies are needed to estimate the long-term effects of combined effect of Pseudomonas sp. UAGF14 and T. aureoviride URM5158 on crop productivity in field conditions.

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Section: Resultsmentioning

confidence: 99%

Combined effect of Pseudomonas sp. and Trichoderma aureoviride on lettuce growth promotion

Filho¹,

Medeiros²,

Barbosa³

et al. 2019

Biosci. J.

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“…and Bacillus spp. for suppression of phytopathogens in the rhizosphere of agricultural crops (Araújo et al, 2002, Egamberdiyeva, 2007Cipriano et al, 2013, Ludwig et al, 2013.…”

Section: Rhizobacteriamentioning

confidence: 99%

“…and Bacillus spp. are used as indicators to measure the soil's ability to suppress pathogenic soil microorganisms and plant roots (Compant et al, 2005;Botelho and Mendonça-Hagler, 2006;Cipriano et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Interaction between Thermotolerant Coliforms and Rhizobacteria in Soil Fertilized with Treated Domestic Wastewater

Neto

Fortes

Silva

et al. 2017

Rev. Bras. Ciênc. Solo

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Studies on the survival of pathogenic microorganisms in the soil after use of wastewater for fertilization of agricultural crops report the effects of moisture, pH, organic matter, and soil temperature on microorganisms. There are few studies that assess the survival of these microorganisms in the rhizosphere of plants fertilized with wastewater. Thus, the aim of this study was to quantify the number of fecal coliforms and rhizobacteria (fluorescent Pseudomonas spp., Bacillus spp,) in the rhizosphere of winter and summer crops fertilized with wastewater. In the experiment, we used 20 plots, and each plot occupied an area of 200 m². The treatments used in the winter crop consisted of uncultivated plots and single crops of wheat, triticale, black bean, and intercropped black bean/wheat. In the summer season, we used uncultivated plots and single crops of corn, sunflower, bean, and intercropped bean/corn. The experiment was conducted in a randomized block design with five treatments and four replications. Soil samples from the rhizosphere for microbiological analyses were collected at the flowering stage of the crops at a depth of 0.00-0.20 m. Plants stimulated fluorescent Pseudomonas spp. and Bacillus spp. in the rhizosphere, with average scores of 7.9 and 6.9 log CFU g -1 of dry soil, respectively, whereas in bare soil, these scores were 6.7 and 5.8 log CFU g -1 of dry soil for these rhizobacteria groups. However, this stimulating effect was not seen for fecal coliforms, which had an average score of 31.7 × 10 3 MPN g -1 of dry soil in the uncultivated area and 20.0 × 10 3 MPN g -1 of dry soil in crop areas. Overall, the numbers of rhizobacteria colonies in the rhizosphere soil under intercropping were higher than those observed in the rhizosphere soils of single winter and summer crops. Therefore, the presence of plants enhances the development of rhizobacteria and changes the balance among the species of microorganisms in the soil microbial community fertilized with wastewater.

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“…Most of them have simple nutritional needs, requiring some amino acids and B-complex vitamins as growth factors (STANIER;DUODOROFF;ADELBERG, 1969). They form endospores (resistance structures) and have the ability to produce antibiotics (FREITAS; PIZZINATTO, 1997). The formation of endospores increases resistance to adverse factors.…”

Section: Introductionmentioning

confidence: 99%

Agronomic characteristics and yield of corn after inoculation with Bacillus amyloliquefaciens

Silva

Gonçalves²,

Costa³

et al. 2023

R. Agrogeoambiental

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Corn is one of the most important crops in Brazil and, due to its physiological characteristics, it has a high productive potential and high nutritional quality, for animal and human nutrition. Therefore, this work sought to evaluate Bacillus amyloliquefaciens subsp. plantarum FZB42 on agronomic characteristics and yield of corn crop. A randomized block design was used, with six doses of B. amyloliquefaciens subsp. Plantarum FZB42 (0.0; 2.5; 5.0; 7.5; 10.0, and 12.5 mL kg-1 seeds) and four repetitions, totaling 24 experimental units. The study was conducted in the experimental area of annual crops of the Instituto Federal de Educação, Ciência e Tecnologia do Sul de Minas Gerais (Federal Institute of Education, Science and Technology of the South of Minas Gerais — IFSULDEMINAS), Muzambinho Campus, in the 2017/18 agricultural year. The agronomic evaluations were: plant height, upper ear insertion height, culm diameter, leaf nitrogen content, forage fresh mass, incidence of Fusarium in the ear, number of rows per ear, number of grains per row, mass of 1000 grains, and yield. The nutritional evaluations performed were: crude protein, ash, ether extract, crude fiber, fiber in acid detergent, and fiber in neutral detergent. In summary, the inoculation of B. amyloliquefaciens subsp. Plantarum FZB42 in corn seeds, regardless of the dose applied, did not interfere with the agronomic characteristics and nutritional quality of corn silage.

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Potencial de rizobactérias na promoção de crescimento e controle da podridãoradicular em alface hidropônica

Cited by 7 publications

References 27 publications

Combined effect of Pseudomonas sp. and Trichoderma aureoviride on lettuce growth promotion

Combined effect of Pseudomonas sp. and Trichoderma aureoviride on lettuce growth promotion

Interaction between Thermotolerant Coliforms and Rhizobacteria in Soil Fertilized with Treated Domestic Wastewater

Agronomic characteristics and yield of corn after inoculation with Bacillus amyloliquefaciens

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