Phosphate-Solubilizing Potentiality of the Microorganisms Capable of Utilizing Aluminium Phosphate as a Sole Phosphate Source

Banik, S.; Dey, B.K.

doi:10.1016/s0232-4393(83)80060-2

Cited by 55 publications

(12 citation statements)

References 7 publications

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“…Penicillium spp. are isolated as components of the bulk soil and rhizosphere or rhizoplane environments of a diverse range of plant species (Chonkar and Subba‐Rao 1967; Banik and Dey 1983) but are not generally reported as being root inhabitants. We have isolated P. purpurogenum from the inner cortex of the root, which suggests a close relationship with the root plant and a possible endophytic nature of the strain.…”

Section: Discussionmentioning

confidence: 99%

Medium pH, carbon and nitrogen concentrations modulate the phosphate solubilization efficiency of Penicillium purpurogenum through organic acid production

Scervino

Papinutti

Godoy

et al. 2011

Journal of Applied Microbiology

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Aims: To study phosphate solubilization in Penicillium purpurogenum as function of medium pH, and carbon and nitrogen concentrations. Methods and Results: Tricalcium phosphate (CP) solubilization efficiency of P. purpurogenum was evaluated at acid or alkaline pH using different C and N sources. Glucose‐ and (NH4)2SO4‐based media showed the highest P solubilization values followed by fructose. P. purpurogenum solubilizing ability was higher in cultures grown at pH 6·5 than cultures at pH 8·5. Organic acids were detected in both alkaline and neutral media, but the relative percentages of each organic acid differed. Highest P release coincided with the highest organic acids production peak, especially gluconic acid. When P. purpurogenum grew in alkaline media, the nature and concentration of organic acids changed at different N and C concentrations. A factorial categorical experimental design showed that the highest P‐solubilizing activity, coinciding with the highest organic acid production, corresponded to the highest C concentration and lowest N concentration. Conclusions: The results described in the present study show that medium pH and carbon and nitrogen concentrations modulate the P solubilization efficiency of P. purpurogenum through the production of organic acids and particularly that of gluconic acid. In the P solubilization optimization studies, glucose and (NH4)2SO4 as C and N sources allowed a higher solubilization efficiency at high pH. Significance and Impact of the Study: This organism is a potentially proficient soil inoculant, especially in P‐poor alkaline soils where other P solubilizers fail to release soluble P. Further work is necessary to elucidate whether these results can be extrapolated to natural soil ecosystems, where different pH values are present. Penicillium purpurogenum could be used to develop a bioprocess for the manufacture of phosphatic fertilizer with phosphate calcium minerals.

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Section: Discussionmentioning

confidence: 99%

Medium pH, carbon and nitrogen concentrations modulate the phosphate solubilization efficiency of Penicillium purpurogenum through organic acid production

Scervino

Papinutti

Godoy

et al. 2011

Journal of Applied Microbiology

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“…Microbial species differ in their capacity to solubilize poorly soluble P salts (Banik and Dey, 1983), therefore differences in microbial-community composition could also affect plant growth by increasing or decreasing nutrient availability. We further hypothesize that the poor growth in the alkaline soils may be due to the presence of microorganisms that have a deleterious effect on plant growth, whereas plant-growth-promoting rhizobacteria could contribute to the good growth in the neutral soils.…”

Section: Discussionmentioning

confidence: 99%

Growth, phosphorus uptake, and rhizosphere microbial‐community composition of a phosphorus‐efficient wheat cultivar in soils differing in pH

Marschner¹,

Solaiman

Rengel

2005

Z. Pflanzenernähr. Bodenk.

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SummaryÐZusammenfassungIn a pot experiment, the P-efficient wheat (Triticum aestivum L.) cultivar Goldmark was grown in ten soils from South Australia covering a wide range of pH (four acidic, two neutral, and four alkaline soils) with low to moderate P availability. Phosphorus (100 mg P kg ±1 ) was supplied as FePO 4 to acidic soils, CaHPO 4 to alkaline, and 1:1 mixture of FePO 4 and CaHPO 4 to neutral soils. Phosphorus uptake was correlated with P availability measured by anion-exchange resin and microbial biomass P in the rhizosphere. Growth and P uptake were best in the neutral soils, lower in the acidic, and poorest in the alkaline soils. The good growth in the neutral soils could be explained by a combination of extensive soil exploitation by the roots and high phosphatase activity in the rhizosphere, indicating microbial facilitation of organic-P mineralization. The plant effect (soil exploitation by roots) appeared to dominate in the acidic soils. Alkaline phosphatase and diesterase activities in acidic soils were lower than in neutral soils, but strongly increased in the rhizosphere compared with the bulk soil, suggesting that microorganisms contribute to P uptake in these acidic soils. Shoot and root growth and P uptake per unit root length were lowest in the alkaline soils. Despite high alkaline phosphatase and diesterase activities in the alkaline soils, microbial biomass P was low, suggesting that the enzymes could not mineralize sufficient organic P to meet the demands of plants and microorganisms. Microbialcommunity composition, assessed by fatty acid methylester (FAME) analysis, was strongly dependent on soil pH, whereas other soil properties (organic-C or CaCO 3 content) were less important or not important at all (soil texture).

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“…Microbial release of protons, organic acids, high-affinity iron chelating siderophores and hormones within the rhizosphere also help to stimulate rooting and solubilize strongly-bound soil inorganic P through acidification and ligand exchange at P sorption sites (Khan et al 2007;Richardson et al 2009;Rashid et al 2012). Many fungal and bacterial isolates have been identified that appear to have exceptional abilities to mobilize P under laboratory conditions (Banik and Dey 1983;Malboobi et al 2009). Several commercial bio-innoculant products containing single species, or mixtures of species, are now available that purport to be effective at mobilizing soil P (Owen et al 2015).…”

Section: Microbial Engineeringmentioning

confidence: 99%

Integrating legacy soil phosphorus into sustainable nutrient management strategies for future food, bioenergy and water security

Rowe

Withers

Baas

et al. 2015

Nutr Cycl Agroecosyst

235

185

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Legacy phosphorus (P) that has accumulated in soils from past inputs of fertilizers and manures is a large secondary global source of P that could substitute manufactured fertilizers, help preserve critical reserves of finite phosphate rock to ensure future food and bioenergy supply, and gradually improve water quality. We explore the issues and management options to better utilize legacy soil P and conclude that it represents a valuable and largely accessible P resource. The future value and period over which legacy soil P can be accessed depends on the amount present and its distribution, its availability to crops and rates of drawdown determined by the cropping system. Full exploitation of legacy P requires a transition to a more holistic system approach to nutrient management based on technological advances in precision farming, plant breeding and microbial engineering together with a greater reliance on recovered and recycled P. We propose the term 'agro-engineering' to encompass this integrated approach. Smaller targeted applications of fertilizer P may still be needed to optimize crop yields where legacy soil P cannot fully meet crop demands. Farm profitability margins, the need to recycle animal manures and the extent of local eutrophication problems will dictate when, where and how quickly legacy P is best exploited. Based on our analysis, we outline the stages and drivers in a transition to the full utilization of legacy soil P as part of more sustainable regional and global nutrient management.

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Phosphate-Solubilizing Potentiality of the Microorganisms Capable of Utilizing Aluminium Phosphate as a Sole Phosphate Source

Cited by 55 publications

References 7 publications

Medium pH, carbon and nitrogen concentrations modulate the phosphate solubilization efficiency of Penicillium purpurogenum through organic acid production

Medium pH, carbon and nitrogen concentrations modulate the phosphate solubilization efficiency of Penicillium purpurogenum through organic acid production

Growth, phosphorus uptake, and rhizosphere microbial‐community composition of a phosphorus‐efficient wheat cultivar in soils differing in pH

Integrating legacy soil phosphorus into sustainable nutrient management strategies for future food, bioenergy and water security

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