elongation and developing abundant lateral roots. Feeding plants with ascorbic acid (ASC)
stimulated primary root elongation in seedlings grown under limiting P concentration.
However, at high P, ASC inhibited root growth. Seedlings of ascorbate‐deficient mutant
(vtc1) formed short roots irrespective of P availability. P‐starved plants accumulated less
ascorbate in primary root tips than those grown under high P. ASC‐treatment stimulated cell …