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. 2014 Sep 26;9(9):e107554. doi: 10.1371/journal.pone.0107554

Figure 5. Phosphate solubilisation activities of P. fluorescens yc operon genomic integrants and plasmid transformants.

Figure 5

Zone of clearance and PSI (Phosphate solubilisation index) (A and B) in Pikovskaya's agar medium during 96–120 h of growth. Zone of colouration (C) and Pi release (D) of transgenic P. fluorescens strains in TRP broth and TRP agar medium during 96–120 h of growth. WT: wild type strain; pYC: P. fluorescens with pYC plasmid; Int: P. fluorescens yc operon genomic integrant. Results are expressed as Mean ±S.E.M of 4 independent observations. * Comparison of parameters with wild type control; ‡ comparison between parameters of plasmid transformants (pYC) and genomic integrants (int).***, ‡‡‡: P<0.001; **,‡‡: P<0.01; *,‡: P<0.05.