FIGURE 10.

In A: transport of phosphorus to maize plants by P. indica carried out in the bi-compartment Petri dish culture system. Radioactivity incorporated in plants was demonstrated by autoradiography. Radioactivity count intensities are shown in false color code (vertical bar, low to high). Panels: i, whole maize plant before autoradiography; ii, false-color autoradiograph of the maize plant obtained after 3 h of exposure of the maize plant; and iii, microscopic view of a sample of plant root before autoradiography. a, maize plants were colonized with wild-type P. indica (WT); b, maize plants were colonized with KD-P. indica (KD); c, maize plants were grown alone without P. indica (C). In B: amount of ³²P transferred to the maize plant components by P. indica. Radioactivity was measured three times independently (number of transformants used was n = 2). The mean ± S.D. of three independent measurements are shown. The bar labeled with the asterisk represents significance as compared with the wild-type P. indica (p < 0.05).