Figure 7.

NaCl Effects on NO Accumulation in Roots and Primary Root Length of Wild-Type and Mutant Seedlings.

Three-day-old wild-type and 5-d-old phb3-3 mutant seedlings grown in liquid media were treated with different concentrations of NaCl for 2 d.

(A) NO induction in wild-type and mutant roots was tested after 10 min treatment with 200 mM NaCl using DAF-FM DA. Induction ratios were determined as the ratio of treated versus control root levels.

(B) Increases in primary root length were calculated by subtracting primary root length at time zero from that measured after 2 d of the treatments. Error bars represent sd ([A], n = 10; [B], n = 20).