Fig 7.

Root system architecture of wild-type (WT) and lra1 plants as revealed by X-ray computed tomography (CT). (A) Root system architecture of the WT (cv HJ2) and lra1 grown for 21 d in 8-cm diameter pots filled with sterilized Kettering loam. Roots were segmented by a region-growing algorithm. (B) Root angles of the WT and lra1 measured using the software RooTh (provided by University of Nottingham). Asterisks indicate significance differences as determined by Student’s t-test (**P<0.01). (C) Total root volume of the WT and lra1 measured using the software Rootrak_0.3.2 (provided by University of Nottingham).