Fig. 4
From: IAA was involved in phosphorus deficiency-induced cluster roots formation in Macadamia integrifolia
Effects of phosphorus (P) supply on root carboxylate exudation (A, B), and the activity of acid phosphatase (C) of Macadamia integrifolia. Relationships between carboxylates (D, E), acid phosphatase activity (F) and IAA concentration in cluster roots. Plants were grown for four months at 0, 5, 25, 50, 100 and 200 µM P. Different lowercase or uppercase letters denote a significant difference among P supplies (P < 0.05).
