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. 2019 Feb 25;10:208. doi: 10.3389/fpls.2019.00208

FIGURE 2.

FIGURE 2

Accumulation of flavanones (A,B), dihydroflavonols (C,D) and flavan-3-ols (E,F) in the cambial region of Norway spruce saplings during infection by Endoconidiophora polonica compared to control saplings inoculated with sterile agar. Naringenin (A), eriodictyol (B), taxifolin (C), taxifolin-3-glucoside (D), catechin (E) and procyanidin B1 (F) contents were measured by LC-tandem mass spectrometry. Statistical significance against the wounded control treatment is shown (significance codes: p < 0.04; ∗∗p < 0.01; n = 5; error bars = SE).