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. 2017 Mar 27;8:390. doi: 10.3389/fpls.2017.00390

FIGURE 3.

FIGURE 3

Total plant dry weight (TDW) (A), total phosphorus (P) content (B), total nitrogen (N) content (C), and fraction of plant N derived from biological N fixation (%NBNF) (D) of mycorrhizal (dark columns) or non-mycorrhizal (light columns) M. truncatula or M. sativa plants grown in sand–zeolite substrate with 10% of either Litoměřice or Tänikon soil (LT or Tän substrate, respectively). The substrate was amended with 0, 10, or 40 mg pot-1 of phosphorus (P0, P10, and P40, respectively). Bars represent means ± standard errors (n = 4 or 5). Asterisks indicate significant differences between mycorrhizal and non-mycorrhizal plants according to t-test (∗0.01 ≤p < 0.05, ∗∗0.001 ≤p < 0.01, ∗∗∗p < 0.001; ns, p ≥ 0.05).