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Root hair phenotypes of the wild type and mutants. (A) Root hair number. (B) Root hair length. (C) Compiled confocal micrographs of the various genotypes. The number of asterisks denotes statistically significant differences to Pi-replete wild-type plants based on Student’s t-test (* P<0.05, ** P<0.01, *** P<0.001). Bar, 100 μM.
