Figure 2.

Root-specific expression of CK oxidases enhances root system size. A, Root phenotypes of 2-week-old transgenic lines grown in hydroponic culture. Representative images of individual plants of the wild type (WT) and each transgenic line are shown. Bars = 2 cm. B to E, Total root length (B), total root surface area (C), root biomass (dry weight; D), and shoot biomass (dry weight; E) of 2-week-old plants. Total root length and surface area were calculated using the WinRHIZO software. Data represent means ± se (n = 20). Asterisks indicate significant differences from the wild type as determined by a two-tailed Student’s t test (*, P < 0.05; **, P < 0.01; and ***, P < 0.001).