Tropical Plant Research
An International Journal by Society for Tropical Plant Research
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2020, VOLUME 7 ISSUE 2Pages: 277-284
Isolation and screening of phosphate solubilising fungi from Okra rhizosphere soil and their effect on the growth of Okra plant (Abelmoschous esculentus L.)
Lal Sahab Yadav* Vinodkumar Kushwaha and Ashish Jain
*Department of Botany, Smt. C.H.M. College, Ulhasnagar - 421003, Thane, Maharashtra, India
Abstract:
Soil microbiota plays an important role in enhances the available nutrients in the soil for plants. In this study twenty-two filamentous fungi were isolated from the Okra rhizosphere soil. Based on primary screening for phosphate solubilizing potential on solid Pikovskaya’s medium ten isolates were selected for quantitative estimation in liquid medium amended with Tricalcium phosphate (TCP) and Rock Phosphate (RP). Aspergillus niger strain (AMB) solubilized maximum TCP & RP and release 295.1 & 221.8 µg ml-1 inorganic-P, while Aspergillus japonicas released maximum P in liquid media amended with TCP (298.5 µg ml-1). The other tested isolates Penicillium sp., two strains of Trichoderma viride and Chaetomium globosum released a significant amount of P in liquid media from 0.5% TCP&RP after ten days. Furthermore, the application of selected phosphate solubilizers in the form of consortium and in a combination of the recommended dose of fertilizers resulted good growth of Okra plants in compare to recommended dose of chemical fertilizers. This fungal consortium may serve as very good phosphate solubilizers and can be used as a biofertilizer.
Soil microbiota plays an important role in enhances the available nutrients in the soil for plants. In this study twenty-two filamentous fungi were isolated from the Okra rhizosphere soil. Based on primary screening for phosphate solubilizing potential on solid Pikovskaya’s medium ten isolates were selected for quantitative estimation in liquid medium amended with Tricalcium phosphate (TCP) and Rock Phosphate (RP). Aspergillus niger strain (AMB) solubilized maximum TCP & RP and release 295.1 & 221.8 µg ml-1 inorganic-P, while Aspergillus japonicas released maximum P in liquid media amended with TCP (298.5 µg ml-1). The other tested isolates Penicillium sp., two strains of Trichoderma viride and Chaetomium globosum released a significant amount of P in liquid media from 0.5% TCP&RP after ten days. Furthermore, the application of selected phosphate solubilizers in the form of consortium and in a combination of the recommended dose of fertilizers resulted good growth of Okra plants in compare to recommended dose of chemical fertilizers. This fungal consortium may serve as very good phosphate solubilizers and can be used as a biofertilizer.
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