Phosphate solubilizing ability of two Arctic Aspergillus niger strains

Many filamentous fungi were isolated from the soils of Ny-Ålesund, Spitsbergen, Svalbard, and were screened in vitro for their phosphate solubilizing ability. Two strains of Aspergillus niger showed good tricalcium phosphate (TCP) solubilizing ability in Pikovskaya's medium. Th...

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Bibliographic Details
Published in:Polar Research
Main Authors: Shiv Mohan Singh, Lal Sahab Yadav, Sanjay Kumar Singh, Purnima Singh, Paras Nath Singh, Rasik Ravindra
Format: Article in Journal/Newspaper
Language:English
Published: Norwegian Polar Institute 2011
Subjects:
Phosphate
Arctic
fungi
Aspergillus
Environmental sciences
GE1-350
Oceanography
GC1-1581
Svalbard
Lesund
Polar Research
Spitsbergen
Online Access:https://doi.org/10.3402/polar.v30i0.7283
https://doaj.org/article/10ccc56f25f14ee39683aa21360d5741
Description
Summary:Many filamentous fungi were isolated from the soils of Ny-Ålesund, Spitsbergen, Svalbard, and were screened in vitro for their phosphate solubilizing ability. Two strains of Aspergillus niger showed good tricalcium phosphate (TCP) solubilizing ability in Pikovskaya's medium. The TCP solubilization index was calculated at varying levels of pH and temperatures. The ability of Aspergillus niger strain-1 to solubilize and release inorganic-P was 285 µg ml–1, while Aspergillus niger strain-2 solubilized 262 µg ml–1 from 0.5% TCP after seven days. This is the first report of TCP solubilization by Arctic strains that may serve as very good phosphate solubilizers in the form of biofertilizer.

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