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. 2019 Feb 8;10:117. doi: 10.3389/fpls.2019.00117

FIGURE 1.

FIGURE 1

Model for interaction of Spm with plant responses to (a)biotic stresses. Lines ending in arrowheads and closed circles, respectively, indicate positive and negative impacts. Biotic Stress: OR, oxidative response; HR, hypersensitive response; MMD, mitochondrion membrane dysfunction; PAO, polyamine oxidase; JA, jasmonic acid; LOX, lipoxygenase; AOS, allene oxide synthase; MAPK, mitogen activated protein kinase; ERF, ethylene responsive factor; PR, pathogenesis related; R: resistance. Abiotic Stress: = AR, antioxidant response; ASA, ascorbic acid; GSH, glutathione; ABA, abscisic acid; ABF, abscisic acid-binding factor; SOD, superoxide dismutase; GR, glutathione reductase; CAT, catalase; GST, glutathione S-transferase; HSP, heat shock protein.