Fig. 2From: Poly-γ-glutamic acid promoted maize root development by affecting auxin signaling pathway and the abundance and diversity of rhizosphere microbial communityThe effect of γ-PGA treatment on IAA content in maize roots. The effect of γ-PGA treatment on IAA content in maize roots after 0 h, 2 h, 6 h, 12 h, 24 h, 48 h, and 96 h. Values are means ± sd (n = 3 repeats). Significant differences are indicated by different letters (P ≤ 0.01)Back to article page