Figure 1 GWAS of two P-acquisition traits. Phenotypic distribution of raw values for Pi-uptake activity (A) and square root-transformed (SQRT) values for PHT1;1/2/3 protein abundance (B). Manhattan plots of Pi-uptake activity (C) and PHT1;1/2/3 protein level (D); the respective Q–Q plots are shown on the right. The analyses were conducted using GWA-Portal. Thresholds for Bonferroni (red dashed line) and Benjamini Hochberg (blue dashed line) correction provided by GWA-Portal are indicated. The two lines overlap in (C). Red arrows in (C) and (D) indicate the shared significant peaks located at Chr5.