Fig. 5.

Uptake of Pi in myb1 mutants and WT plants. The myb1 mutants and WT plants were grown in Pi-sufficient (HP, 200 µM Pi) and Pi-deficient (NP, 0 µM Pi) solutions until the seventh leaf blades were fully expanded, and were then placed in a hydroponic system containing 100 µM Pi labeled with radioactive ³²P. The Pi uptake of the plants was monitored over a 24 h period. Left panel, Pi uptake in plants grown in HP solution; right panel, Pi uptake in plants grown in LP solution. Values presented are means±SD (n=3). Different letters indicate significant differences (P<0.05, Duncan’s test).