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Phosphate‐solubilizing potential of the nematophagous fungus Arthrobotrys oligospora
Author(s) -
Duponnois Robin,
Kisa Marija,
Plenchette Christian
Publication year - 2006
Publication title -
journal of plant nutrition and soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 1436-8730
DOI - 10.1002/jpln.200520551
Subject(s) - fungus , phosphate , solubilization , chemistry , inoculation , phosphorite , in vitro , biology , botany , microbiology and biotechnology , food science , biochemistry , horticulture
The nematophagous fungus Arthrobotrys oligospora was tested in vitro and in viv o for its ability to solubilize rock phosphate. Three types of rock phosphate (RP) from Burkina Faso (KRP), Senegal (TRP), and Mali (TIRP) were used at four concentrations for the in‐vitro experiment. All three types of RP were solubilized by the fungus. The maximum quantity of P recovered in solution was obtained with TRP, 12.5% for an application of 1 g L –1 . The effect of TRP and A. oligospora applied separately or in combination was tested in viv o on the growth of A. holosericea. In a P‐deficient soil without addition of RP, P solubilization was increased by addition of A. oligospora. The P uptake by plants growing in soil amended with TRP and inoculated with A. oligospora was significantly higher compared to noninoculated controls, thus demonstrating the ability of the fungus to solubilize additional phosphate from RP in vivo.