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Auxin-induced accumulation of signaling PLs depends on NO. Explants were labeled as in Figure 2 and subsequently treated for 10 min with buffer (control), 10 μm IAA (A), or 500 μm SNAP (B) in the presence or absence of 200 μm of the specific NO scavenger cPTIO. Results from three independent experiments are expressed as fold accumulation ± se taking the control values as 1. Bars with asterisks are significantly different (t test, P < 0.05) from the control treatment.
