Control of Acid Phosphatases Expression from Aspergillus niger by Soil Characteristics

Nahas, Ely

doi:10.1590/s1516-89132015050485

Cited by 14 publications

(5 citation statements)

References 38 publications

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“…It is known that acid phosphatases have their optimum activity in low pH environments (4–6), while alkaline have it in high pH media (8–10). Previous studies showed that pH generally affects the enzymatic activity, in coincidence with our findings (Nahas ). It appears that fungal growth in soils could benefit the acid phosphatase activity over alkaline ones, as they lower the pH even in buffered mediums, turning the environmental conditions more favourable for acid phosphatases, but further experiments should be performed to verify this hypothesis.…”

Section: Discussionsupporting

confidence: 93%

Fungal extracellular phosphatases: their role in P cycling under different pH and P sources availability

et al. 2017

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Aims: The aim of this work is to analyse the effect of pH, fungal identity and P chemical nature on microbial development and phosphatase release, discussing solubilization and mineralization processes in P cycling. Methods and Results: P solubilizing fungi (Talaromyces flavus, T. helicus L, T. helicus N, T. diversus and Penicillium purpurogenum) were grown under three pH conditions (6, 6Á5 and 8Á5) and with different inorganic (calcium, iron, aluminium and rock) and organic (lecithin and phytate) P sources. P solubilization, mineralization, growth and phosphatase production were recorded. Acid and neutral environments maximized fungal development and P recycling. P chemical nature changed the phosphatases release pattern depending on the fungal identity. Acid phosphatase activity was higher than alkaline phosphatases, regardless of pH or sample times. Alkaline phosphatases were affected by a combination of those factors. Conclusions: P chemical nature and pH modify fungal growth, P mineralization and solubilization processes. The underlying fungal identitydependent metabolism governs the capacity and efficiency of P solubilization and mineralization. P solubilization and mineralization processes are interrelated and simultaneously present in soil fungi. Significance and Impact of the study: This study constitutes a reference work to improve the selection of fungal bioinoculants in different environmental conditions, highlighting their role in P cycling.

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Section: Discussionsupporting

confidence: 93%

Fungal extracellular phosphatases: their role in P cycling under different pH and P sources availability

et al. 2017

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“…Niewiadomska [1] observed an analogical effect in the study on alfalfa, where the PRP SOL fertiliser containing phosphorus, potassium, zinc, boron, molybdenum, and other elements decreased the catalytic activity of the enzyme by triggering compounds unavailable to plants. There were similar results in the studies by Nahas [37] and Laishram et al [28]. Lemanowicz and Koper [38] observed greater activity of these enzymes in the experimental variant without phosphorus fertilisation.…”

Section: Biochemical Activity Of Soilsupporting

confidence: 87%

An Assessment of the Influence of Co-Inoculation with Endophytic Bacteria and Rhizobia, and the Influence of PRP SOL and PRP EBV Fertilisers on the Microbial Parameters of Soil and Nitrogenase Activity in Yellow Lupine (Lupinus luteus L.) Cultivation

Niewiadomska¹,

Sulewska²,

Wolna-Maruwka³

et al. 2018

Pol. J. Environ. Stud.

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The aim of the study was to determine the influence of PRP SOL and PRP EBV fertilisers and co-inoculation (simultaneous inoculation of plants with bacteria of the Rhizobium genus and endophytic Bacillus subtilis bacteria) on nitrogenase activity, the dynamics of growth of selected soil microorganisms, variation in soil biochemical properties, and soil fertility index in a yellow lupine plantation. There were 12 variants of the field experiment: 1) the control variant of uninoculated yellow lupine, 2) seeds inoculated with the Bacillus subtilis strain, 3) seeds inoculated with nitragin, 4) PRP SOL fertiliser, 5) PRP EBV fertiliser, 6) PRP SOL + PRP EBV, 7) PRP SOL fertiliser + Bacillus subtilis inoculation, 8) PRP SOL fertiliser + nitragin, 9) PRP SOL fertiliser + Bacillus subtilis + nitragin, 10) PRP EBV fertiliser + Bacillus subtilis, 11) PRP EBV fertiliser + Bacillus subtilis + nitragin, and 12) PRP SOL + PRP EBV + Bacillus subtilis + nitragin. Soil samples for microbiological and biochemical analyses were collected at 3 terms: during the emergence of plants, at the beginning of their florescence, and after harvesting. The count of selected groups of soil microorganisms (total bacterial count, moulds, Actinobacteria, copiotrophic and oligotrophic microorganisms) was measured with the serial dilution method developed by Koch. The analysis of soil enzymatic activity such as dehydrogenases and phosphatases in different variants was based on the colorimetric method, and catalase activity was measured with the manometric method. The two-year field experiment was conducted in 2014 and 2015. It showed that PRP SOL and PRP *

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“…niger strains as producing a substantial quantity of acid phosphatase (Nahas, 2015). A. niger PM-4 was found more e cient in producing a higher amount of P as compared to P. aeruginosa CD6C.…”

Section: Nutrients Solubilizationmentioning

confidence: 84%

A Comparative Role of Competent Microbes for Value-added Composting of Agricultural Waste

Naeem

Afzaal

Haq³

et al. 2022

Preprint

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The current study aimed to explore non-pathogenic, non-aflatoxigenic and competent microbial isolates accountable for producing hydrolytic enzymes and plant growth-stimulating hormones for proficient and augmented conversion of agricultural waste press mud (PM) into biofertilizer through composting. Four bacterial (B. altitudinis CD2E, P. aeruginosa CD6C, B. velezensis BS2, B. wiedmannii BTA) and one fungal isolate (A. niger PM-4) were selected for microbial inoculum formulation for composting of PM heaps in different treatments. The compatibility studies found that the bacterial isolates were compatible with each other, however, A. niger PM-4 was found non-compatible with P. aeruginosa CD6C and B. velezensis BS2. The heap containing bacterial consortium T3 (PM + consortium) found its maturity on the 21st day by reducing more C/N, total organic carbon (TOC), higher total Kjeldahl nitrogen (TKN) 2.15+0.02%, total phosphorous (TP) (1.42+0.01%), and total potassium (TK) (1.0+0.03%) than any other treatments.

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Control of Acid Phosphatases Expression from Aspergillus niger by Soil Characteristics

Abstract: This work studied the acid phosphatase (APase) activity from culture medium (extracellular, eAPase)

Cited by 14 publications

References 38 publications

Fungal extracellular phosphatases: their role in P cycling under different pH and P sources availability

Fungal extracellular phosphatases: their role in P cycling under different pH and P sources availability

An Assessment of the Influence of Co-Inoculation with Endophytic Bacteria and Rhizobia, and the Influence of PRP SOL and PRP EBV Fertilisers on the Microbial Parameters of Soil and Nitrogenase Activity in Yellow Lupine (Lupinus luteus L.) Cultivation

A Comparative Role of Competent Microbes for Value-added Composting of Agricultural Waste

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