Effect of salt on survival and P-solubilization potential of phosphate solubilizing microorganisms from salt affected soils

Ramakrishnan, S.; Yandigeri, Mahesh S.; Kashyap, Sudhanshu; Alagawadi, A. R.

doi:10.1016/j.sjbs.2012.05.004

Cited by 82 publications

(36 citation statements)

References 17 publications

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“…The use of phosphate solubilizing microorganisms as biofertilizers represents a promising strategy to improve world food and at the same time conserve the environment. The beneficial microorganisms solubilize phosphorus in vitro, increasing the bioavailability of insoluble phosphorus from soil to be used by plants [55][56][57][58]. It has been reported an efficient treatment with Aspergillus niger, which stimulated significantly the growth of cabbage cultures, increasing roots and shoots length, weights of fresh and dry shoots [59].…”

Section: Discussionmentioning

confidence: 99%

Applications of Fungal Strains with Keratin-Degrading and Plant Growth Promoting Characteristics

et al. 2019

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Protein hydrolysates (PHs) are organic non-microbial biostimulants having beneficial effects on plants. The study was designed to assess the effects on plants by the applications of PHs obtained from Trichoderma isolates grown on keratin wastes. Trichoderma isolates were characterized for indole-3-acetic acid and siderophores production, activity of lytic enzymes, phosphorous solubilization and inhibition of pathogens growth, using qualitative specific tests. Fungal isolates were cultured on a medium with keratin wastes (wool and feathers) to obtain PHs. Fungal PHs were tested in vivo for plant biostimulant action, as follows: (i) seeds germination test; (ii) activation of plant proton pump; (iii) evaluation of effect on tomato seedling growth. PHs from T. asperellum cultured on feathers medium reached the highest values for all parameters recorded (plant height and diameter, number of leaves and branches), with the exception of those for plant biomass, which were maximum for the wool medium. The metabolites released by keratin degradation under the activity of selected T. asperellum isolate improved crop health and productivity. The use of PHs can be a reasonable solution for the environmental pollution of by-products from the food chain, as well as for the replacement of chemical fertilizers with microbial formulations to stimulate plant growth.

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Section: Discussionmentioning

confidence: 99%

Applications of Fungal Strains with Keratin-Degrading and Plant Growth Promoting Characteristics

et al. 2019

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“…Similarly, Xiao et al (2013) demonstrated the capability of Aspergillus niger WHAK1 to solubilize rock phosphate over a wide range of temperature, pH, salinity, and desiccation. Srinivasan et al (2012) demonstrated the capability of Aspergillus terreus to solubilize rock phosphate under salt stress, and Kanse et al (2015) found a similar performance in Talaromyces funiculosus under different concentrations of NaCl, as well as a relatively high tolerance to the presence of fungicides. Therefore, stress-tolerant fungi are of particular interest to improve the availability of P in crops under changing environmental conditions (Babu and Reddy 2011;Xiao et al 2013).…”

Section: Electronic Supplementary Materialsmentioning

confidence: 83%

Aspergillus tubingensis and Talaromyces islandicus Solubilize Rock Phosphate Under Saline and Fungicide Stress and Improve Zea mays Growth and Phosphorus Nutrition

López

Gallego

Vargas-Ruiz

et al. 2020

J Soil Sci Plant Nutr

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The purpose of this study was to evaluate the capability of Aspergillus tubingensis and Talaromyces islandicus to solubilize inorganic phosphorus sources, their activity under abiotic stress, and the enhancement of P availability in soils and plant growth. The P-solubilizing capability and acidification mechanism of the strains were assessed in vitro using tricalcium phosphate and rock phosphate. Independent assays were conducted with rock phosphate under NaCl and fungicides carbendazim, chlorothalonil, and propamocarb hydrochloride using a factorial design. Thereafter, the effects of fungal inoculations in rock phosphate-amended soil and P nutrition of Zea mays were assessed in a greenhouse experiment. Both fungi solubilized P in vitro via acidification through the exudation of acetic, citric, lactic, malic, quinic, and succinic acids. The P-solubilizing efficiency of A. tubingensis was maintained above 97.5% under 0.5 to 3.0% NaCl, up to 28.7% in the treatment with carbendazim, up to 5.3% with chlorothalonil, and above 96.5% with propamocarb hydrochloride; while T. islandicus efficiency decreased to 45.2% in a NaCl concentration-dependent trend, and maintained it above 80% in the fungicide treatments. The inoculation with A. tubingensis increased the available P in the amended soil by up to 65% after 30 days and resulted in 87% higher foliar P content, 111% greater plant height, and 25% greater dry weight of maize shoots. Similarly, T. islandicus contributed to these parameters in 55, 67, 90, and 17%, respectively. These findings suggest their potential as qualified phosphorus solubilizing microorganisms to develop novel and sustainable approaches for P fertilization in agriculture.

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“…Different soil stressors such as increase in sodium chloride and pH influences phosphorus solubilization [40]. Despite the negative effect of ZnO nanoparticles on phosphate-solubilizing bacteria which directly correlated with reduced phosphate content in the amended ultisol, Pseudomonas aeruginosa and P. alcaligenes were isolated from the ultisol and loam soils.…”

Section: Influence On Available Phosphate and Phosphate-solubilizing mentioning

confidence: 98%

Influence of Zinc Oxide Nanoparticles on Soil Physicochemical Properties and Arachis hypogea Rhizosphere Microbial Community

Oghenerume¹,

Eduok²,

Ita³

et al. 2020

IJPSS

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We evaluated the effect of 4000 mg zinc oxide (ZnO, 99%, 30 nm) nanoparticle on the physicochemical and microbiological properties of organic manure amended ultisol and loam soil cultivated with Arachis hypogaea using standard methods. The results indicate varying effects on the physicochemical properties in relation to the soil type. The pH of the control ultisol at 7.85 ± 0.17 and 8.3 ± 0.12 in the amended ultisol whereas, the control loam was 7.15 ± 0.17 and 7.41 ± 0.11 in the amended soil indicating 1.06- and 1.04-times higher difference than the controls respectively. Phosphorus concentration at 57.82 ± 0.54%, 50.81 ± 0.22% and 55.97 ± 0.04%, 59.97 ± 0.02% was 1.14 times lower in the ZnO amended ultisol and 1.07 times higher in amended loam soil compared to the respective controls. The organic matter content in the control and amended ultisol was 2.28 ± 0.32% and 0.91 ± 0.02%, 3.68 ± 0.36% and 0.36 ± 0.02% in the control and amended loam soil. The concentration of nitrate in the control ultisol was 0.05 ± 0.01% and 0.03 ± 0.01% in the amended soil. The nitrate in the control loam soil was 0.08 ± 0.01% relative to 0.02 ± 0.01% in the treated soil and these differences were significant at p = 0.05. The concentration of nutritive salts was reduced and in contrast iron, copper, exchangeable acids, exchange capacity, clay and silt increased in the amended soils. Further to this, heterotrophic ammonia and nitrate-oxidizing bacterial population were inhibited in the amended soils and denitrifying organisms were stimulated. The organisms were members of the genera Pseudomonas, Xanthobacter, Enterobacter, Bacillus, Lactobacillus, Citrobacter, Nitrosomonas, Agromyces and Rhizobium. ZnO nanoparticles altered the soil physicochemical properties which exacerbated the negative effect on microbial abundance and varied with the soil type.

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Effect of salt on survival and P-solubilization potential of phosphate solubilizing microorganisms from salt affected soils

Cited by 82 publications

References 17 publications

Applications of Fungal Strains with Keratin-Degrading and Plant Growth Promoting Characteristics

Applications of Fungal Strains with Keratin-Degrading and Plant Growth Promoting Characteristics

Aspergillus tubingensis and Talaromyces islandicus Solubilize Rock Phosphate Under Saline and Fungicide Stress and Improve Zea mays Growth and Phosphorus Nutrition

Influence of Zinc Oxide Nanoparticles on Soil Physicochemical Properties and Arachis hypogea Rhizosphere Microbial Community

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