Table 1.

Measurement of Length and Diameter of Roots, Hypocotyls, and Inflorescence Stems of the Wild Type and the elp1 Mutant

OrgansWild Typeelp1
Light-grown seedlinga
Root length (mm)10.6 ± 0.86.2 ± 0.6
Root diameter (μm)130 ± 10170 ± 20
Root hair number (mm)13.5 ± 2.045.2 ± 2.4
Root hair length (μm)80 ± 30460 ± 60
Cortical cells in roots (μm)
Length230 ± 30130 ± 40
Width18 ± 323 ± 4
Etiolated seedlingb
Hypocotyl length (mm)13.3 ± 1.65.2 ± 0.9
Hypocotyl diameter (μm)230 ± 50340 ± 80
Cortical cells in hypocotyls (μm)
Length331 ± 53171 ± 29
Width23 ± 454 ± 5
Main inflorescence stemc
Height (cm)8.3 ± 0.83.1 ± 0.4
Internode length (cm)
First internode1.5 ± 0.31.2 ± 0.2
Second internode3.7 ± 0.61.0 ± 0.3
  • a Light-grown seedlings used for measurement were five days old.

  • b Etiolated seedlings were grown for four days in the dark.

  • c Five-week-old plants grown on agar were used for measurement.

  • Data are means ±se from 15 plants.