"The presence of NH4+ in Mortierella sp. acidified the growth medium to a greater extent than in the presence of NO3-; most likely by increasing proton-pumping in the fungal cell membrane. The fraction of RP dissolved by Mortierella sp. varied with the N form in the liquid medium, which was 37, 38 and 32% when NH4+, NO3- and both ions were supplied, respectively. The positive effect of NH4 + as N source on RP solubilization.
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Last date updated on July, 2014