Phosphate solubilization potential and phosphatase activity of rhizospheric Trichoderma spp.

Kapri, Anil; Tewari, Lakshmi

doi:10.1590/s1517-83822010005000001

Cited by 139 publications

(69 citation statements)

References 12 publications

(13 reference statements)

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“…However, it is possible that the P that was retained in the mycelium is available for uptake by plant roots when the mycelium dies (Kapri and Tewari, 2010). Future studies should focus on understanding the balance between phosphorus that is solubilized and phosphorus that is absorbed by the fungi for their metabolism and to consider phosphorus uptake by plants.…”

Section: Discussionmentioning

confidence: 99%

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Phosphate solubilization by fungi with nematicidal potential

Lima-Rivera

López-Lima

Desgarennes

et al. 2016

J. Soil Sci. Plant Nutr.

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We evaluated the nematicidal potential and phosphate solubilization ability of the fungal species Geomyces pannorum and Paecilomyces carneus, which are associated with the potato cyst nematode Globodera rostochiensis. In a broth medium containing calcium phosphate, the two fungi solubilized between 67%-96% of the insoluble phosphorus that was present in the medium, and in a broth medium containing iron phosphate, the phosphorus that was solubilized by the two fungi ranged between 2%-13%. In a greenhouse experiment, G. pannorum and P. carneus were applied to soil that was naturally infested with G. rostochiensis and planted with Avena sativa. The fungi increased the available phosphorus in the soil by more than 30%, and Paecilomyces carneus also reduced the nematode population by 71%. This study is the first to report on the ability of G. pannorum and P. carneus to increase the available phosphorus in the soil, suggesting that these fungal species may have potential uses in agricultural soils with insoluble phosphorus. Moreover, this study provides a new alternative that contributes to the sustainable management of crops with bio-agents that have dual activity; they increase the available phosphorus in the soil and mitigate plant parasitic nematodes.

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Section: Discussionmentioning

confidence: 99%

“…Growth promotion is commonly considered an indirect indicator of phosphate solubilization by a microorganism (Dupponois et al, 2006;Kapri and Tewari, 2010). Nonetheless, these characteristics could be more related to the production of phytohormones and growth-promoting substances than to phosphorus solubilization (Narloch et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Phosphate solubilization by fungi with nematicidal potential

Lima-Rivera

López-Lima

Desgarennes

et al. 2016

J. Soil Sci. Plant Nutr.

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“…increased dry biomass of chickpea plants by 22-33% compared with non-inoculated control (Kapri and Tewari 2010). Previous studies showed that A. niger and Vibrio proteolyticus were the most active P solubilizing species of fungi and bacteria, respectively (Vassilev et al 2007).…”

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confidence: 88%

Growth and productivity of wheat affected by phosphorus-solubilizing fungi and phosphorus levels

Ram¹,

Malik²,

Dhaliwal³

et al. 2015

Plant Soil Environ.

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Phosphorus (P) is second largest limiting element for plant growth. The phosphate rock which is used in the manufacture of P fertilizers is nonrenewable resource. We have to address to future shortages for sustainable crop production in India. At global level, India ranks as second largest wheat producing nation and contributing approximately 11.9% to the world wheat production from about 12% of global area (USDA 2010). One of the major constraints in boosting up the wheat production is the unbalanced use of plant nutrients, particularly P and K. Average P uptake of wheat is about 3.8 kg P/t of grains (Timsina and Connor 2001). P recovery by wheat from fertilizers is quite low i.e. 15-20% of the applied P is recovered by wheat while the remaining P is fixed as insoluble P fractions in soils (Rodríguez and Fraga 1999). Only 0.1% of the total P exists in a soluble form available for plant uptake because of its fixation into an unavailable form. Increasing prices of P-fertilizers in developing countries like India and high fixation of P in soil have led to the search for sustainable way of P nutrition of crops. In this regards phosphate-solubilizing microorganisms (PSM) have been seen as the best eco-friendly means for P nutrition of crops.A number of bacteria (Bacillus spp., Pseudomonas spp., Burkholderia spp.) and fungi (Aspergillus spp., Penicillium spp.) are known to increase availability of P to plants and benefit plant growth either by mineralization of organic phosphate or by solubilisation of insoluble inorganic phosphates in soils through the production of organic acids (Rodríguez and Fraga 1999, Saber et al. 2009, Saxena et al. 2014 ABSTRACTPhosphorus (P) availability limits crop growth in most of cultivable soils in north-west India. The beneficial rhizosphere microorganisms such as phosphate-solubilising fungi (PSF) were found to increase P availability in soil and improve crop yields. In view of this, field experiments were conducted during 2009-2011 to evaluate the effect of seed inoculation with PSF (Penicillium bilaii) at different rates of fertilizer P on P content in leaves and grain yield of irrigated wheat in India. The soil was low in Olsen P at the Bathinda site and medium at the Ludhiana site. In no-P treatment, PSF significantly increased grain yield by 12.6% over non-inoculated control. The effect of PSF on grain yield was generally more pronounced in a soil with low Olsen-P compared to medium Olsen-P level. Inoculation of PSF along with 50% P fertilizer increased wheat yield equivalent to 100% P with no PSF. Spike density was significantly higher in PSF + 50% P than all the other treatments. There is need to study a long-term effect of Penicillium bilaii on P-fertilizer saving in wheat on soils varying in P availability, pH and P fixation capacity for different wheat-based cropping systems.

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“…A halo zone surrounding the colony after fourth day of incubation at 30°C indicated P solubilization. Quantitative estimation of P solubilization was done according to Kapri and Tewari [12]. The strain was inoculated in 100 ml of NBRIP medium and kept incubated in a shaker (150 rpm, 30°C, 6 days).…”

Section: Screening Of Plant Growth Promoting (Pgp) Traitsmentioning

confidence: 99%

Isolation and Characterization of Amycolatopsis sp. strain CRJ2-11 with Biocontrol and Plant Growth Promoting Potential from Upland Rice Rhizosphere in Manipur, India

DS¹

2016

Ely J Micro

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Fifty seven actinomycetes isolated from upland rice rhizosphere in Chandel, Manipur were subjected to antifungal assays by Dual Culture technique. Five strains showed biocontrol potential against five major rice fungal pathogens viz. Rhizoctonia oryzae-sativae, Fusarium oxysporum, Bipolaris oryzae, Curvularia oryzae and Pyricularia oryzae. Of the five biocontrol strains listed here, one (CRJ2-11) showed highest antagonistic potential. The bioactive strain was also positive for various plant growth promoting traits such as indole-3-acetic acid (IAA) and siderophore production and phosphate solubilization. The strain produced significant levels of IAA (196 µg/ml) and solubilized substantial amounts of inorganic phosphate (82.49 µg/ml) respectively. Characterization of the strain CRJ2-11 by phenotypic tests and 16s rDNA sequence analysis indicated it to be a species of Amycolatopsis having closest affinity with Amycolatopsis keratiniphila (99%). Hence, the potential biocontrol and PGP (plant growth-promoting) strain CRJ2-11 was designated as Amycolatopsis sp. strain CRJ2-11.

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Phosphate solubilization potential and phosphatase activity of rhizospheric Trichoderma spp.

Cited by 139 publications

References 12 publications

Phosphate solubilization by fungi with nematicidal potential

Phosphate solubilization by fungi with nematicidal potential

Growth and productivity of wheat affected by phosphorus-solubilizing fungi and phosphorus levels

Isolation and Characterization of Amycolatopsis sp. strain CRJ2-11 with Biocontrol and Plant Growth Promoting Potential from Upland Rice Rhizosphere in Manipur, India

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