Phosphate solubilizing ability of two Arctic Aspergillus niger strains

Polar research

Paras Nath Singh¹  Sanjay Kumar Singh,²  Lal Sahab Yadav,²  Rasik Ravindra²  Purnima Singh,³  Shiv Mohan Singh,⁵ 

[1] Science Pilani, K.K. Birla-Goa Campus ZuarinagarGoa 403726, India;Agharkar Research Institute G.G. Agarkar RoadPune 411004, India;Birla Institute of Technology &National Centre for Antarctic and Ocean Research, Vasco Da Gama , Goa 403804, India;National Centre for Antarctic and Ocean Research, Vasco Da Gama , Goa 403804, India Correspondence

关键词: Phosphate;    Arctic;    fungi;    Aspergillus.;   

DOI  :  10.3402/polar.v30i0.7283

学科分类：自然科学（综合）

来源: Co-Action Publishing

【 摘 要 】

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.

【 授权许可】

CC BY-NC