Table 2.

pH-dependent rescue of root hair growth in Arabidopsis knockout mutants of Atrboh C

Genotype, treatment*	Root hair density (root hairs per mm of root length)	Root hair length, μm
WT, pH5	25 ± 7 (11)†	492 ± 67 (15)
WT, pH6	25 ± 5 (12)	343 ± 97 (24)
rhd2-1, pH5	0.6 ± 0.6 (16)	na
rhd2-1, pH6	21 ± 4 (20)	357 ± 71 (25)
Salk_071801, pH5	0.2 ± 0.2 (9)	na
Salk_071801, pH6	25 ± 8 (8)	334 ± 64 (42)

na, not applicable.

*Seedlings were grown on 1% (wt/vol) agar plates containing 1/4-strength Murashige and Skoog basal salts, 1% (wt/vol) sucrose, buffered to indicated pH with 5 mM MES/NaOH.

^†Mean values ± SD (n).