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Soil Type Affects Organic Acid Production and Phosphorus Solubilization Efficiency Mediated by Several Native Fungal Strains from Mexico
DORCAS ZUÑIGA SILGADO
JULIO CESAR RIVERA LEYVA
Jeffrey Coleman
Ayixon Sánchez Reyes
SUSANA VALENCIA DIAZ
Mario Serrano
Luz Estela González de Bashan
Jorge Folch-Mallol
Acceso Abierto
Atribución-NoComercial-SinDerivadas
DOI: 10.3390/microorganisms8091337
URL. https://www.mdpi.com/2076-2607/8/9/1337
ISSN: 2076-2607
biosolubilization of phosphorus, soil sorption capacity, organic acids, Trichoderma, Aspergillus
"Phosphorus (P) is considered a scarce macronutrient for plants in most tropical soils. The application of rock phosphate (RP) has been used to fertilize crops, but the amount of P released is not always at a necessary level for the plant. An alternative to this problem is the use of Phosphorus Solubilizing Microorganisms (PSM) to release P from chemically unavailable forms. This study compared the P sorption capacity of soils (the ability to retain P, making it unavailable for the plant) and the profile of organic acids (OA) produced by fungal isolates and the in vitro solubilization efficiency of RP. Trichoderma and Aspergillus strains were assessed in media with or without RP and different soils (Andisol, Alfisol, Vertisol). The type and amount of OA and the amount of soluble P were quantified, and according to our data, under the conditions tested, significant differences were observed in the OA profiles and the amount of soluble P present in the different soils. The efficiency to solubilize RP lies in the release of OAs with low acidity constants independent of the concentration at which they are released. It is proposed that the main mechanism of RP dissolution is the production of OAs."
Multidisciplinary Digital Publishing Institute
2020
Artículo
Microorganisms
Inglés
HONGOS
Versión publicada
publishedVersion - Versión publicada
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