Table I.

Growth rates of vertically grown Arabidopsis roots

Cells Ablated-aGrowth RateCells AblatedGrowth Rate
μm h−1 μm h−1
Controls218  ± 18 (10)S3200  ± 11 (9)
Tip cells201  ± 9 (9)S2203  ± 18 (6)
Tip cells + S3207  ± 14 (8)S1203  ± 7 (8)
Tip cells, S3 + S2215  ± 22 (7)Central columella202  ± 8 (10)
Tip cells, S3, S2 + S1214  ± 13 (6)Flank columella218  ± 14 (7)
S1 + S2219  ± 9 (9)Peripheral cap cells216  ± 7 (10)

The growth rates of ablated and control roots were measured during a 12-h period. Growth rates were not significantly different as determined by ANOVA (P = 0.964). Values are means ± se. n, Number of roots measured (shown in parentheses). S1 to S3, Columella stories 1 to 3; controls, no cells ablated.

    • F0-a See Figures 1B and 2B for definitions of ablated cells.