Effectiveness of a rock phosphate solubilizing fungus to increase soil solution phosphate impaired by the soil phosphate sorption capacity

Available phosphate (P) deficiency in tropical soils has been recognized as a major factor that limits soil quality and plant performance. To overcome this, it is necessary to add high amounts of soluble P-fertilizers; however, this is inefficient and costly. Alternatively, rock phosphates (RP) can...

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Autores:
Osorio Vega, Nelson Walter
Habte, Mitiku
León Peláez, Juan Diego
Tipo de recurso:
Article of journal
Fecha de publicación:
2015
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/58592
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/58592
http://bdigital.unal.edu.co/55376/
Palabra clave:
57 Ciencias de la vida; Biología / Life sciences; biology
58 Plantas / Plants
Mortierella
apatite
phosphorus
Mollisol
Oxisol
Ultisol
Andisol
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
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spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Osorio Vega, Nelson Walterc0033a1d-c7c7-4c66-bbdf-e21e4091521e300Habte, Mitiku13e6269f-05f6-4c72-af12-3af9ff7e819c300León Peláez, Juan Diego6a1b7054-6f01-4803-95d4-b51d102684003002019-07-02T14:25:19Z2019-07-02T14:25:19Z2015-07-01ISSN: 2248-7026https://repositorio.unal.edu.co/handle/unal/58592http://bdigital.unal.edu.co/55376/Available phosphate (P) deficiency in tropical soils has been recognized as a major factor that limits soil quality and plant performance. To overcome this, it is necessary to add high amounts of soluble P-fertilizers; however, this is inefficient and costly. Alternatively, rock phosphates (RP) can be used, but their low reactivity limits their use. Phosphate solubilizing microorganisms (PSM) can enhance RP dissolution and, thus, improve the RP agronomic effectiveness as fertilizer. Nonetheless, their effectiveness may be impaired by the soil P fixation capacity. An experiment was carried out to assess the in vitro effectiveness of the fungus Mortierella sp. to dissolve RP in an axenic culture medium and, thus, enhance the solution P concentration in the presence of aliquots of soils with contrasting P fixation capacity. The results showed that the fungus was capable of lowering the medium pH from 7.7 to 3.0 and, thus, dissolving the RP. The presence of soil aliquots in the medium controlled the effectiveness of the fungus to increase the concentration of the soluble P. In the presence of soils with a low or medium P sorption capacity, the concentration of the soluble P was high (63.8-146.6 mg L-1) in comparison with the inoculated (soilless) treatment (50.0 mg L-1) and the uninoculated control (0.7 mg L-1). By contrast, with very-high P fixing soil aliquots, the concentration of the soluble P was very low (3.6-33.1 mg L-1); in addition, in these soils, the fungus immobilized more P into its mycelia than in soils with a low or medium P fixation capacity. The capacity of a soil to fix P seems to be a good predictor for the effectiveness of this fungus to increase the soluble P concentration via RP dissolution.application/pdfspaUniversidad Nacional de Colombiahttp://www.revistas.unal.edu.co/index.php/refame/article/view/50950Universidad Nacional de Colombia Revistas electrónicas UN Revista Facultad Nacional de Agronomía MedellínRevista Facultad Nacional de Agronomía MedellínOsorio Vega, Nelson Walter and Habte, Mitiku and León Peláez, Juan Diego (2015) Effectiveness of a rock phosphate solubilizing fungus to increase soil solution phosphate impaired by the soil phosphate sorption capacity. Revista Facultad Nacional de Agronomía, 68 (2). pp. 7627-7636. ISSN 2248-702657 Ciencias de la vida; Biología / Life sciences; biology58 Plantas / PlantsMortierellaapatitephosphorusMollisolOxisolUltisolAndisolEffectiveness of a rock phosphate solubilizing fungus to increase soil solution phosphate impaired by the soil phosphate sorption capacityArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTORIGINALrfnam.v68n2.50950.pdfapplication/pdf293866https://repositorio.unal.edu.co/bitstream/unal/58592/1/rfnam.v68n2.50950.pdf0f01b989fa35befdc8ffa57d6f9fc512MD51THUMBNAILrfnam.v68n2.50950.pdf.jpgrfnam.v68n2.50950.pdf.jpgGenerated Thumbnailimage/jpeg8941https://repositorio.unal.edu.co/bitstream/unal/58592/2/rfnam.v68n2.50950.pdf.jpg7c32a968d2bef1f0a0194d115c84a11fMD52unal/58592oai:repositorio.unal.edu.co:unal/585922024-04-02 23:11:32.58Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co
dc.title.spa.fl_str_mv Effectiveness of a rock phosphate solubilizing fungus to increase soil solution phosphate impaired by the soil phosphate sorption capacity
title Effectiveness of a rock phosphate solubilizing fungus to increase soil solution phosphate impaired by the soil phosphate sorption capacity
spellingShingle Effectiveness of a rock phosphate solubilizing fungus to increase soil solution phosphate impaired by the soil phosphate sorption capacity
57 Ciencias de la vida; Biología / Life sciences; biology
58 Plantas / Plants
Mortierella
apatite
phosphorus
Mollisol
Oxisol
Ultisol
Andisol
title_short Effectiveness of a rock phosphate solubilizing fungus to increase soil solution phosphate impaired by the soil phosphate sorption capacity
title_full Effectiveness of a rock phosphate solubilizing fungus to increase soil solution phosphate impaired by the soil phosphate sorption capacity
title_fullStr Effectiveness of a rock phosphate solubilizing fungus to increase soil solution phosphate impaired by the soil phosphate sorption capacity
title_full_unstemmed Effectiveness of a rock phosphate solubilizing fungus to increase soil solution phosphate impaired by the soil phosphate sorption capacity
title_sort Effectiveness of a rock phosphate solubilizing fungus to increase soil solution phosphate impaired by the soil phosphate sorption capacity
dc.creator.fl_str_mv Osorio Vega, Nelson Walter
Habte, Mitiku
León Peláez, Juan Diego
dc.contributor.author.spa.fl_str_mv Osorio Vega, Nelson Walter
Habte, Mitiku
León Peláez, Juan Diego
dc.subject.ddc.spa.fl_str_mv 57 Ciencias de la vida; Biología / Life sciences; biology
58 Plantas / Plants
topic 57 Ciencias de la vida; Biología / Life sciences; biology
58 Plantas / Plants
Mortierella
apatite
phosphorus
Mollisol
Oxisol
Ultisol
Andisol
dc.subject.proposal.spa.fl_str_mv Mortierella
apatite
phosphorus
Mollisol
Oxisol
Ultisol
Andisol
description Available phosphate (P) deficiency in tropical soils has been recognized as a major factor that limits soil quality and plant performance. To overcome this, it is necessary to add high amounts of soluble P-fertilizers; however, this is inefficient and costly. Alternatively, rock phosphates (RP) can be used, but their low reactivity limits their use. Phosphate solubilizing microorganisms (PSM) can enhance RP dissolution and, thus, improve the RP agronomic effectiveness as fertilizer. Nonetheless, their effectiveness may be impaired by the soil P fixation capacity. An experiment was carried out to assess the in vitro effectiveness of the fungus Mortierella sp. to dissolve RP in an axenic culture medium and, thus, enhance the solution P concentration in the presence of aliquots of soils with contrasting P fixation capacity. The results showed that the fungus was capable of lowering the medium pH from 7.7 to 3.0 and, thus, dissolving the RP. The presence of soil aliquots in the medium controlled the effectiveness of the fungus to increase the concentration of the soluble P. In the presence of soils with a low or medium P sorption capacity, the concentration of the soluble P was high (63.8-146.6 mg L-1) in comparison with the inoculated (soilless) treatment (50.0 mg L-1) and the uninoculated control (0.7 mg L-1). By contrast, with very-high P fixing soil aliquots, the concentration of the soluble P was very low (3.6-33.1 mg L-1); in addition, in these soils, the fungus immobilized more P into its mycelia than in soils with a low or medium P fixation capacity. The capacity of a soil to fix P seems to be a good predictor for the effectiveness of this fungus to increase the soluble P concentration via RP dissolution.
publishDate 2015
dc.date.issued.spa.fl_str_mv 2015-07-01
dc.date.accessioned.spa.fl_str_mv 2019-07-02T14:25:19Z
dc.date.available.spa.fl_str_mv 2019-07-02T14:25:19Z
dc.type.spa.fl_str_mv Artículo de revista
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dc.identifier.issn.spa.fl_str_mv ISSN: 2248-7026
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identifier_str_mv ISSN: 2248-7026
url https://repositorio.unal.edu.co/handle/unal/58592
http://bdigital.unal.edu.co/55376/
dc.language.iso.spa.fl_str_mv spa
language spa
dc.relation.spa.fl_str_mv http://www.revistas.unal.edu.co/index.php/refame/article/view/50950
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Revista Facultad Nacional de Agronomía Medellín
Revista Facultad Nacional de Agronomía Medellín
dc.relation.references.spa.fl_str_mv Osorio Vega, Nelson Walter and Habte, Mitiku and León Peláez, Juan Diego (2015) Effectiveness of a rock phosphate solubilizing fungus to increase soil solution phosphate impaired by the soil phosphate sorption capacity. Revista Facultad Nacional de Agronomía, 68 (2). pp. 7627-7636. ISSN 2248-7026
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
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