Table 1 Root parameters and calculation of the ratios of root hair surface area in seedlings and older plants.

Root hair length^b

(mm)

0.49 ± 0.11

0.38 ± 0.19

Supplementary Table S1

Root hair length

of lateral root^b (mm)

N.A.

0.28 ± 0.16

Supplementary Table S1

Root hair diameter^c

(μm)

^26,27,28,29

Primary root length^c

(cm)

0.72 ± 0.4

70.15 ± 0.88

Supplementary Table S1,^30,31,32,33

Primary root diameter^c

(μm)

126.5 ± 36.8

145.3 ± 41.2

Supplementary Table S1,^{27,28,34,35,36,37,38,39}

Total lateral root length^c

(cm/seedling)

N.A.

5.93 ± 0.20

^32,33

Lateral root diameter^c

(μm)

N.A.

126.7 ± 47.1

Supplementary Table S1,^35,36,37,38

Total length of root tip regions lacking root hair^c

(mm/seedling)

0.95 ± 0.1

13.25 ± 1.7

Supplementary Table S1,^30,31,33,40

Epidermal (H-) cell

length^c (μm)

146.2 ± 36.1

191.5 ± 44.2

Supplementary Table S1,^27,34,35,39

Epidermal (H-) cell

length of lateral root^d (μm)

N.A.

137.4 ± 17.5

Supplementary Table S1

Root hair density (hair No./mm root)

47.5

43.6

Total surface area of root hairs (mm²/seedling)

4.53

51.93

Total surface area of root (mm²/seedling)

7.39

107.55

Ratio of root hair surface area^e (%)

61.3

48.6