Efficient phosphorus solubilization by mutant strain of Xanthomonas campestris using different carbon, nitrogen and phosphorus sources

Sharan, Adhyayan; Shikha, .; Darmwal, N. S.

doi:10.1007/s11274-008-9807-2

Cited by 28 publications

(7 citation statements)

References 10 publications

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“…With NH 4 + as sole N source, reduction in pH and amount of P solubilized was observed to be high compared to that of nitrate ). This is due to extrusion of protons to compensate NH 4 + uptake (Sharan et al 2008 ). This was in contradiction with the fi ndings of Reyes et al ( 1999 ), who reported decrease in P solubilization when higher concentration of NH 4 + was supplied to the medium.…”

Section: Proton Release From Nh 4 + (Assimilation/respiration)contrasting

confidence: 68%

Phosphate-Solubilizing Microorganisms: A Critical Review

Kishore

Pindi

Reddy

2015

Plant Biology and Biotechnology

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Nitrogen (N), phosphorus (P) and potassium (K) are the three important nutrients required by any plant for healthy growth. Among these, P stands as the second limiting nutrient next to nitrogen. Even though different forms of P are abundantly present in soil, its availability in plant-utilizable form is limited. This defi ciency is usually compensated by adding chemical fertilizers. However, the chemical fertilizers are expensive and are not eco-friendly. Nonjudicious and irregular usage for a long time leads to decreased soil activity and soil microfl ora leading to imbalance in equilibrium. Usage of microorganisms to augment the P availability is the best alternative. Phosphate-solubilizing microorganisms (PSMs) when applied in appropriate numbers into the rhizosphere help the plant by supplementing P in plant-utilizable form by several mechanisms. In addition, few PSMs also possess added features as plant growth-promoting rhizobacteria (PGPR) and biocontrol agents conferring protection from phytopathogens. Improvement in soil characters by PSMs is an added advantage. Recent advances in technology paved the way for modifying PSMs with desired qualities. In spite of these, several areas in this area of research suffer different lacunae. Efforts are being made to discuss all major areas pertaining to PSMs in the present review.

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Section: Proton Release From Nh 4 + (Assimilation/respiration)contrasting

confidence: 68%

Phosphate-Solubilizing Microorganisms: A Critical Review

Kishore

Pindi

Reddy

2015

Plant Biology and Biotechnology

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“…Nautiyal (1999) ascribed the higher solubilization found for solid and liquid NBRIP media, which was also found in this study, as most likely due to the use of MgCl 2 and MgSO 4 as Mg sources and/or (NH 4 ) 2 SO 4 as the nitrogen source. These effects may also correspond to the strong effects found for different nitrogen sources when the solubilization potentials of defined media were compared, perhaps due to their effect on organic acid production (Dave and Patel, 2003;Sharan et al, 2008;Pallavi and Gupta 2013) or the liberation of H + when NH 4 + is absorbed by the bacteria (Ahuja et al, 2007). Either of these mechanisms could explain the stronger acidification that was found for NBRIP than for VERMA liquid media (Figure 2), in which the pH difference between the media fell from approximately 0.2 to more than 1 for some of the bacterial strains.…”

Section: In Vivo Solubilization Efficiency Test In Plastic Bagsmentioning

confidence: 77%

Evaluation methods used for phosphate-solubilizing bacteria

Sousa¹,

Lira²,

Fracetto³

et al. 2016

Afr. J. Biotechnol.

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Phosphorus solubilizers naturally acidify rhizospheric soil and increase phosphorus availability; therefore, their evaluation may help to reduce phosphorus fertilizer use. This work aimed to evaluate the different selection methods and select inorganic phosphorus-solubilizing bacteria as potential plant-growth promoters. Bacterial isolates obtained from sugarcane roots and soil were tested using solid growth media containing bicalcium phosphate and Irecê Apatite ground rock phosphate as phosphorus sources. Seven isolates with high (3), moderate (3) and low solubilization indices (1) and the Pseudomonas fluorescens R-243 strain were tested in two liquid growth media, followed by the pH and soluble P in the solution. The same isolates, in the absence of inoculation, were tested in Leonard jars with two high-and low-solubility sources using cowpea as a test species. Forty-four days after planting aboveground dry mass, the phosphorus content and total aboveground phosphorus and substratum phosphorus contents were evaluated. The growth media affected phosphorus solubilization by the bacteria. Evaluation of liquid media was the most reliable method for analyzing bicalcic phosphorus solubilization by the bacteria not linked to pH reduction. Isolates UAGC 17, 19 and 65 should be better studied because they were the best solubilizers in culture media; however, they did not demonstrate the same efficiency when inoculated on cowpea.

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“…The application of nitrogen fertilizers into the soils enhances the activity of microorganisms which increases excreting of organic acids leading to improve the dissolution of insoluble phosphate compounds (Jing et al 2021) as well as the production of phosphatase enzyme which in turn increases phosphorus release resulting from phosphorus mineralization (Horner 2008). The quantity of phosphorus solubility in the presence of ammoniacal nitrogen fertilizers is high in comparison with nitrate nitrogen fertilizers (Sharan et al 2008). Also, the high activity of calcium ions in calcareous soils plays an important role in the mobility and availability of phosphorus, due to the increased chances of forming low-soluble calcium phosphate (Jalali and Jalali 2016;Pizzeghello et al 2014).…”

Section: Discussionmentioning

confidence: 99%

Effect of Co-applying Different Nitrogen Fertilizers with Bone Char on Enhancing Phosphorus Release in Calcium Carbonate-Rich Soil: an Incubation Study

Amin

2023

J Soil Sci Plant Nutr

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The vision of this study is to find a way for increasing phosphorus release from bone char. An incubation experiment was conducted to study the effect of co-applying different nitrogen fertilizer types with bone char (BC) on the availability and distribution of phosphorus in calcium carbonate-rich soil. The experiment contains the following treatments: soil without any nitrogen fertilizer (BC only), soil + ammonium sulfate (BC + AS), soil + ammonium nitrate (BC + AN), and soil + urea (BC + U). Bone char was added to all treatments at a dose of 4 g kg−1 soil. Co-applying bone char with all nitrogen fertilizers caused a significant decrease in pH and increased significantly phosphorus availability in the soil. The concentrations of soil available phosphorus increased from 8.05 mg kg−1 soil for BC treatment to 8.99, 8.90, and 10.16 mg kg−1 soil for BC + AS, BC + AN, and BC + U treatments, respectively, at the end of incubation. Significant increases in soil available phosphorus were observed with increasing incubation periods in all treatments. The effectiveness of the treatments on the soil available phosphorus increase was in the order of BC + U > BC + AS > BC + AN > BC. Nitrogen fertilization treatments significantly increased the NaHCO3-Pi concentrations compared to the BC treatment. Urea application to the soil increased significantly the NaOH-Pi fraction compared to other treatments at day 10 of incubation. Changes in HCl-Pi and Res-P fractions were non-significant in all treatments under nitrogen fertilization. According to the findings, co-applying bone char with nitrogen fertilizers is an agronomic practice that improves phosphorus availability in calcium carbonate-rich soil, thence it is preferable to add urea rather than other nitrogen fertilizers. This study explores a sustainable management strategy to find cost-effective and environmentally friendly alternatives to phosphate fertilizers.

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Efficient phosphorus solubilization by mutant strain of Xanthomonas campestris using different carbon, nitrogen and phosphorus sources

Cited by 28 publications

References 10 publications

Phosphate-Solubilizing Microorganisms: A Critical Review

Phosphate-Solubilizing Microorganisms: A Critical Review

Evaluation methods used for phosphate-solubilizing bacteria

Effect of Co-applying Different Nitrogen Fertilizers with Bone Char on Enhancing Phosphorus Release in Calcium Carbonate-Rich Soil: an Incubation Study

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