actividad de las fosfatasas ácidas y alcalinas (extracelulares e intracelulares) en hongos de la rizosfera de arachis hypogaea (papiloneaceae)

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ID: 203376
2004
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Abstract
El papel potencial de los hongos aislados de la rizosfera del maní, en la producción de fosfatasas ácidas y alcalinas extracelulares e intracelulares, fue evaluado in vitro. Las fosfatasas ácidas y alcalinas extracelulares, mostraron la mayor actividad y las especies de Penicillium fueron las más eficientes en su producción. Los análisis de correlación mostraron que las fosfatasas ácidas extracelulares e intracelulares producidas por A. niger, A. terreus, Penicillium sp. y P. brevicompactum se correlacionaron negativamente entre sí; mientras que las actividades de las fosfatasas alcalinas extracelulares e intracelulares, se correlacionaron positivamente. Las actividades de las fosfatasas ácidas extracelulares, producidas in vitro por la mayoría de los hongos ensayados, no se correlacionaron con la actividad de la fosfatasa ácida presente en la rizosfera del maní; sin embargo, las actividades de las fosfatasas alcalinas extracelulares producidas in vitro, se correlacionaron negativamente con las actividades de las fosfatasas alcalinas presentes en la rizosfera. La capacidad de producción de fosfatasas, por parte de los hongos aislados de la rizosfera del maní, sugiere el gran potencial de los mismos para contribuir a la mineralización del P en esta zona
The potential role of the fungi, isolated from the peanut rhizosphere, in the production of extracellular and intracellular acid and alkaline phosphatase, was evaluated in vitro. Acid and alkaline extracellular phosphatases showed the highest activities, and the Penicillium species were the most efficient in their production. The correlation analysis showed that extracellular acid and intracellular acid phosphatase produced by Aspergillus niger, A. terreus, Penicillium sp. y P. brevicompactum were negatively correlated; while the extracellular and intracellular phosphatase activities, were positively correlated. The extracellular acid phosphatase activities produced in vitro by majority of fungi assayed, were not correlated with the acid phosphatase activity present in the peanut soil rhizosphere. Nevertheless, the extracellular alkaline phosphatase activities produced in vitro, were negatively correlated with the extracellular alkaline phosphatase activities present in the rhizosphere. The ability of phosphatase production by fungi isolated from peanut rhizosphere suggests they have great potential to contribute to the P mineralization in this zone
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Authors ;Y. Gómez-Guiñán
Journal science journal of university of zakho
Year 2004
DOI
DOI not found
URL
http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442004000100035
Keywords
alkaline phosphatase arachis hypogaea fungi

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