Figure 7.

Increased size of pht4;2 rosette leaves. A, Rosettes at the end of vegetative growth (8 weeks). B, Rosette leaves 3, 6, 8, and 14 of representative 8-week-old wild-type (WT) and pht4;2 plants. C, Increase in rosette area during vegetative growth. Values shown are means ± se (n = 8). * Significantly different from the wild type (P < 0.05, Student’s t test). As shown in A, both the allelic loss-of-function mutants exhibited the same growth pattern, so for clarity, only the results for pht4;2-1 are shown in B and C.