Organic acids production by rhizosphere microorganisms isolated from a Typic Melanudands and its effects on the inorganic phosphates solubilization
It has been established that organic acid secretion by rhizosphere microorganisms is one of the mechanisms to solubilize the phosphorus (P) attached to insoluble mineral compounds in soil. This action is an important biotechnological alternative, especially in those soils where high fixation of this nutrient occurs, a very common situation in the tropics. This research evaluated the ability performed by five bacterial and five fungal isolates from Typic Melanudands soil to produce organic acids and generate available phosphorus from insoluble P sources. Given these concerns, the selected microorganisms were replicated for 7 days in liquid medium Pikovskaya (PVK) modified sources tricalcium phosphate (P-Ca), aluminum phosphate (P-Al) and iron phosphate (P-Fe). The results indicated that phosphorus availability in the media, correlates positively with the organic acids production in each of the sources used (P-Ca (0.63), P-Al (0.67) and P-Fe (0.63). In turn, the chemical processes linked to the phosphates solubilization (e.g., Ca availability) affected the development of the microorganisms tested. Both, fungi and bacteria varied in their ability production and type of metabolized organic acids, the most frequent were as follows: citric and gluconic acid.
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Universidad Nacional de Colombia - Sede Palmira
2017
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oai:www.revistas.unal.edu.co:article-561482017-08-01T20:30:42Z Organic acids production by rhizosphere microorganisms isolated from a Typic Melanudands and its effects on the inorganic phosphates solubilization Serna Posso, Eduardo José Sánchez de Prager, Marina Cisneros Rojas, Carlos Adolfo Available phosphorus insoluble P sources phosphorus dynamics Penicillium ochrochloron. Agronomy soil biology soil microbiology soil sciences plant nutrition natural sciences earth sciences Available phosphorus insoluble P sources phosphorus dynamics Penicillium ochrochloron Soil biology soil microbiology soil sciences earth sciences natural sciences It has been established that organic acid secretion by rhizosphere microorganisms is one of the mechanisms to solubilize the phosphorus (P) attached to insoluble mineral compounds in soil. This action is an important biotechnological alternative, especially in those soils where high fixation of this nutrient occurs, a very common situation in the tropics. This research evaluated the ability performed by five bacterial and five fungal isolates from Typic Melanudands soil to produce organic acids and generate available phosphorus from insoluble P sources. Given these concerns, the selected microorganisms were replicated for 7 days in liquid medium Pikovskaya (PVK) modified sources tricalcium phosphate (P-Ca), aluminum phosphate (P-Al) and iron phosphate (P-Fe). The results indicated that phosphorus availability in the media, correlates positively with the organic acids production in each of the sources used (P-Ca (0.63), P-Al (0.67) and P-Fe (0.63). In turn, the chemical processes linked to the phosphates solubilization (e.g., Ca availability) affected the development of the microorganisms tested. Both, fungi and bacteria varied in their ability production and type of metabolized organic acids, the most frequent were as follows: citric and gluconic acid. Universidad Nacional de Colombia - Sede Palmira 2017-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Experimental Experimental application/pdf application/xml https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/56148 10.15446/acag.v66n2.56148 Acta Agronómica; Vol. 66 No. 2 (2017); 241 - 247 Acta Agronómica; Vol. 66 Núm. 2 (2017); 241 - 247 Acta Agronómica; v. 66 n. 2 (2017); 241 - 247 2323-0118 0120-2812 eng https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/56148/57817 https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/56148/61255 Derechos de autor 2017 Acta Agronómica https://creativecommons.org/licenses/by-nc-nd/4.0 |
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Serna Posso, Eduardo José Sánchez de Prager, Marina Cisneros Rojas, Carlos Adolfo |
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Serna Posso, Eduardo José Sánchez de Prager, Marina Cisneros Rojas, Carlos Adolfo Organic acids production by rhizosphere microorganisms isolated from a Typic Melanudands and its effects on the inorganic phosphates solubilization |
author_facet |
Serna Posso, Eduardo José Sánchez de Prager, Marina Cisneros Rojas, Carlos Adolfo |
author_sort |
Serna Posso, Eduardo José |
title |
Organic acids production by rhizosphere microorganisms isolated from a Typic Melanudands and its effects on the inorganic phosphates solubilization |
title_short |
Organic acids production by rhizosphere microorganisms isolated from a Typic Melanudands and its effects on the inorganic phosphates solubilization |
title_full |
Organic acids production by rhizosphere microorganisms isolated from a Typic Melanudands and its effects on the inorganic phosphates solubilization |
title_fullStr |
Organic acids production by rhizosphere microorganisms isolated from a Typic Melanudands and its effects on the inorganic phosphates solubilization |
title_full_unstemmed |
Organic acids production by rhizosphere microorganisms isolated from a Typic Melanudands and its effects on the inorganic phosphates solubilization |
title_sort |
organic acids production by rhizosphere microorganisms isolated from a typic melanudands and its effects on the inorganic phosphates solubilization |
description |
It has been established that organic acid secretion by rhizosphere microorganisms is one of the mechanisms to solubilize the phosphorus (P) attached to insoluble mineral compounds in soil. This action is an important biotechnological alternative, especially in those soils where high fixation of this nutrient occurs, a very common situation in the tropics. This research evaluated the ability performed by five bacterial and five fungal isolates from Typic Melanudands soil to produce organic acids and generate available phosphorus from insoluble P sources. Given these concerns, the selected microorganisms were replicated for 7 days in liquid medium Pikovskaya (PVK) modified sources tricalcium phosphate (P-Ca), aluminum phosphate (P-Al) and iron phosphate (P-Fe). The results indicated that phosphorus availability in the media, correlates positively with the organic acids production in each of the sources used (P-Ca (0.63), P-Al (0.67) and P-Fe (0.63). In turn, the chemical processes linked to the phosphates solubilization (e.g., Ca availability) affected the development of the microorganisms tested. Both, fungi and bacteria varied in their ability production and type of metabolized organic acids, the most frequent were as follows: citric and gluconic acid. |
publisher |
Universidad Nacional de Colombia - Sede Palmira |
publishDate |
2017 |
url |
https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/56148 |
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