In vitro DISSOLUTION OF ACIDULATED ROCK PHOSPHATE BY PHOSPHATE SOLUBILIZING MICROORGANISMS

Quevedo, Ángela Patricia Moreno; Osório, Nelson; Murillo, Octavio Augusto González

doi:10.15446/abc.v20n2.42713

Cited by 5 publications

(3 citation statements)

References 37 publications

(40 reference statements)

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“…In both the P and K solubilization tests in the liquid medium, a decrease in pH was observed, however, the yeasts with the lowest pH did not show a direct relationship with the increase in PS and KS values, this results do not agree with what was reported by Moreno Quevedo et al (2015) where cultures inoculated with Aspergillus niger indicated the reduction in pH as an indicator of the solubilization capacity of P, in their studies the values of pH 3.58 were those who obtained a higher concentration of soluble phosphorus (42.3 mg L -1 ); and Bagyalakshmi et al (2017) achieved the highest solubilization of K (41.91 mg L -1 ) with Pseudomonas nitroreducens when reducing the pH to values of 4.5 being the lowest of all their study. According to reports found, the acidification of the medium occurs as a result of the synthesis of organic acids such as oxalic, formic, citric, malic, propionic, tartaric acid, among others (Kumar et al, 2016;Xiao et al, 2013), this reduction in pH induces the ability to release K and P from minerals to bring them to their available solution form (Teotia et al, 2016).…”

Section: Discussioncontrasting

confidence: 86%

Levaduras aisladas de biofermentos de microorganismos de montaña, una opción para la nutrición vegetal

Mora-López,

López-Restrepo,

Osorio-Echeverri

et al. 2023

Agron. Mesoam.

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Introducción. El fósforo y el potasio son nutrientes esenciales para el desarrollo vegetal; pero se encuentran poco disponibles en el suelo, haciendo necesaria la fertilización química o mineral, práctica ineficiente por ausenciade microorganismos solubilizadores. La aplicación de biofermentos de Microorganismos de Montaña (MM) es unaalternativa, sin embargo, pocos estudios evidencian el potencial agronómico de las levaduras presentes en MM. Objetivo. Evaluar a nivel in vitro, la capacidad biofertilizante y promotora de crecimiento de levaduras antagonistasaisladas de biofermentos de MM. Materiales y métodos. Esta investigación se desarrolló den el 2019 en la Universidad de Medellín, Colombia. La capacidad biofertilizante se determinó al medir la solubilización de fósforo ypotasio en medio sólido mediante halos de solubilización y en medio líquido al cuantificar el fósforo (PS) y potasiosoluble (KS) en mg por litro. La actividad promotora de crecimiento, se determinó al cuantificar la producción de indol acético (AIA) de levaduras aisladas de biofermentos de MM. Como prueba adicional, se evaluó la producción de celulasas en medio carboximetil celulosa (CMC). Resultados. En el día seis, se evidenciaron las concentraciones más altas de PS y KS en medio líquido. En agar NBRIP como en caldo con roca P, el aislado GRB-LB05 evidenció un PS de 3,57 mg L-1 diferente a la de control. En agar NBRIP modificado y en caldo con feldespato, GRB-LB01 presentó el menor pH y bajo KS, mientras que, GRB-LB12 (1,32 mg L-1) y GRB-LB02 (1,12 mg L-1) registraron las concentraciones más altas. La levadura GRB-LB06 fue la más promisoria (12 mg L-1) en la producción de AIA, seguida de GRB-LB13. Conclusiones. Las levaduras antagonistas aisladas de biofermentos líquidos de MM mostraron capacidad biofertilizante y promotora del crecimiento, el aislamiento GRB-LB12 (Suhomyces xylopsoci) fue la de mayor solubilización de producción de P, K, AIA y capacidad celulolítica.

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Section: Discussioncontrasting

confidence: 86%

Levaduras aisladas de biofermentos de microorganismos de montaña, una opción para la nutrición vegetal

Mora-López,

López-Restrepo,

Osorio-Echeverri

et al. 2023

Agron. Mesoam.

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“…The A. niger strains solubilized a high amount of insoluble phosphorus at 98.22 mg/L, followed by P. waksmanii at 95.77 mg/L, and P. brevicompactum at 74.63 mg/L. The values presented here exceed those highlighted in other studies [17,36,37,43,[47][48][49][50]; however, they were lower than the values presented for the Aspergillus sp. strain (167.7 mg/L) [37].…”

Section: Discussioncontrasting

confidence: 77%

Selection and Characterization of Phosphate-Solubilizing Fungi and Their Effects on Coffee Plantations

Arias,

Heredia Abarca,

del Carmen Perea Rojas

et al. 2023

Plants

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The use of phosphate-solubilizing fungi in coffee cultivation is an alternative to the use of traditional fertilizers. The objective of this study was to analyze the mechanisms involved in the phosphorus solubilization of fungal strains and to evaluate the effect of a phosphate-solubilizing strain on coffee plants. For this, phosphorus-solubilizing fungal strains were selected for evaluation of their solubilization potential and phosphatase activity. Coffee plants were inoculated in the field with a phosphate-solubilizing strain, and the soil and foliar soluble phosphorus contents, as well as coffee bean yield, were quantified. Of the 151 strains analyzed, Sagenomella diversispora, Penicillium waksmanii, and Penicillium brevicompactum showed the highest solubilization. Aspergillus niger and P. waksmanii presented the highest soluble phosphorus values; however, P. brevicompactum showed the highest phosphatase activity. The P. brevicompactum strain inoculated on the coffee plants did not favor the foliar phosphorus content but increased the soil soluble phosphorus content in two of the coffee plantations. The plants inoculated with the phosphate-solubilizing strain showed an increase in coffee bean weight on all plantations, although this increase was only significant in two of the three selected coffee plantations.

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“…In recent years various techniques for solubilization of insoluble RP and sparingly soluble organic and inorganic P sources have been proposed, with increasing emphasis on application of P‐solubilizing bacteria (PSBs) ( Hameeda et al, ; Panhwar et al, ; Selvakumar et al, ; Abbasi et al, ; Moreno Quevedo et al, ).The P solubilizing potential of these PSBs is due to their ability to produce and release acidic metabolites, such as organic acids, that through their hydroxyl and carboxyl groups chelate the cations bound to phosphate and then convert them into the soluble forms ( Khan et al, 2009). Therefore, the ability of PSBs to solubilize P complexes has been attributed to the process of acidification, chelation, exchange reactions, and production of organic acids ( Goldstein , ; Chen et al, ; Ekin , ).…”

Section: Introductionmentioning

confidence: 99%

Biosolubilization of phosphorus from rock phosphate and other P fertilizers in response to phosphate solubilizing bacteria and poultry manure in a silt loam calcareous soil

Abbasi

Manzoor

2018

J. Plant Nutr. Soil Sci.

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‘Phosphate solubilizing bacteria' (PSBs) are able to release unavailable P from native and applied P sources into plant‐available soil pool through their solubilizing and acidifying effects. The effects of three indigenous and one exotic PSBs on P solubilization from different P sources, plant biomass production, and P‐uptake efficiency of maize (Zea mays L.) were examined in an incubation and greenhouse study. For incubation study, surface (0–15 cm) soil was collected from an arable field (Inceptisols) and amended with rock phosphate (RP), single superphosphate (SSP), poultry manure (PM), and RP+PM with and without PSBs. The amended soil was incubated in the control environment at 25 ± 2°C for a total of a 100‐d period to establish relative potential rate of P solubilization of added P sources. A complementary greenhouse experiment was conducted in pots by growing maize as a test crop. Growth characteristics, P‐uptake, and P‐utilization efficiency (PUE) were determined. Phosphate solubilizing bacteria generated a solubilization effect on different P sources by releasing more P into plant‐available soil pool, i.e., 14.0–18.3 µg g−1 in RP, 5.0–9.9 µg g−1 in SSP, 1.4–4.4 µg g−1 in PM, and 4.5–7.8 µg g−1 in RP+PM compared to their sole application without PSBs. The available P from inorganic SSP declined continuously from the mineral pool (after day 30) and at the end 40% of applied P was unaccounted for. However, P losses were reduced to 28 and 27% when PSBs (PSB1 and PSB3) were applied with superphosphate treatments. In the absence of PSBs, the recoveries of applied P (in soil) from RP, SSP, PM and RP+PM were 4, 25, 9, and 12%, respectively, those had been increased to 14, 30, 12 and 15% in the presence of PSBs. Similarly, the plant biomass in RP+PSBs treatments compared to the RP without PSBs increased between 12–30% in first sampling (30 DAG) and 13–30% in the second sampling (60 DAG). The P utilization efficiency (PUE) in plants supplemented with PSBs was 20–73% higher compared to those without PSBs. The detection of oxalic and gluconic acids in culture medium treated with PSBs (7.8–25.0 and 25–90 mg L−1, respectively) confirmed the production of organic acids by the indigenous bacterial isolates. This study indicate that low P recovery both in plant and soil can likely be improved by using indigenous PSBs and organic amendment poultry manure, which allowed a more efficient capture of P released due to P solubilization.

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In vitro DISSOLUTION OF ACIDULATED ROCK PHOSPHATE BY PHOSPHATE SOLUBILIZING MICROORGANISMS

Cited by 5 publications

References 37 publications

Levaduras aisladas de biofermentos de microorganismos de montaña, una opción para la nutrición vegetal

Levaduras aisladas de biofermentos de microorganismos de montaña, una opción para la nutrición vegetal

Selection and Characterization of Phosphate-Solubilizing Fungi and Their Effects on Coffee Plantations

Biosolubilization of phosphorus from rock phosphate and other P fertilizers in response to phosphate solubilizing bacteria and poultry manure in a silt loam calcareous soil

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