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. 2022 Jan 10;12:766095. doi: 10.3389/fpls.2021.766095

FIGURE 2.

FIGURE 2

Behavior of germinating R. solani sclerotia on tomato leaves primed with MeJA or SA compared with the control observed over a 24 h time course. (A) Top row: Sclerotia starting to germinate vigorously within 4 h after placement on the control leaves. Profuse infection hyphae spreading in all directions almost covering the leaf surface by 12 and 24 hpi. Middle row: Sclerotia showing delayed germination on the MeJA-primed leaves with infection hyphae of measurable length being visible only from 12 hpi. Bottom row: Sclerotia showing the most delayed germination and the lowest amount of infection hyphae on the SA-primed leaves. (B) Graph showing the comparison of length of infection hyphae from germinating sclerotia on control, MeJA-primed, and SA-primed leaves. Bars represent mean ± SEM of three independent experiments with three replicates. Different letters indicate significant differences among treatments at p < 0.05 according to Duncan’s multiple range test. Bar = 1 mm.