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. 2012 Oct 10;3:228. doi: 10.3389/fpls.2012.00228

FIGURE 4.

FIGURE 4

Reduced cell elongation in the roots of map3kε1-/-; map3kε2-/-;alc-YFP-MAP3Kε1 plants. (A) Mean length of root epidermal cells from three previously defined zones of root growth (Cruz-Ramirez et al., 2004). Zone 1 is the root meristem, zone 2 is the cell elongation zone, and zone 3 is the mature zone where cell elongation has ceased. n ≥ 15. Error bars represent the standard error. (B,C) Confocal microscopy images of primary root tips of transgenic lines expressing YFP-MAP3Kε1 or YFP-MAP3Kε2 from their respective native promoters. Roots were stained with propidium iodide (PI) to highlight cell walls (indicated by red color in the images). Left panels display YFP fluorescence in green. Right panels are merged images of the YFP and PI fluorescent signals. Emission was detected at 590–640 nm for PI and 500–550 nm for YFP.