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. 2019 Apr 17;20(8):1909. doi: 10.3390/ijms20081909

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Scatter plot of the principal component analysis (PCA) for P. coccineus leaves/shoots (A) and roots (B) for the first and second axes for physiological parameters, for example, shoot/root fresh weight (FW), root length, Chl a/b ratio, concentration of chlorophyll a (Chl a), Chl b, carotenoids (Car), Chl (a + b), C, N, C/N, P, K, Fe, Mn, Mo, Zn, Cu, flavonoids (FLAVO), phenolics (TPC), allantoin (ALLA), tartrate, malate, citrate, and succinate; activity of SOD, CAT, APX, GPX, PAL, TAL, and GLU; and antioxidant potential (ABTS and DPPH tests). Abbreviations: J0 = without methyl jasmonate (J); J1 = with 1 µM of J; J10 = with 10 µM of J; −Cu = without Cu; +Cu = with 50 µM Cu; NI − S17 = no inoculation with the S17 isolate; I + S17 = inoculation with the S17 isolate.