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. 2018 Nov 27;9:1748. doi: 10.3389/fpls.2018.01748

FIGURE 3.

FIGURE 3

Confocal microscopy highlighting the presence of fluorescing Fusarium oxysporum f.sp. cubense in different locations in the roots of Cavendish and Lady Finger banana plants. (A) Sample from a Cavendish root 20 dpi, showing hyphae apparently progressing through the intercellular spaces in the elongation zone above the root tip. (B) Cavendish plants at 20 dpi showing no symptoms of Fusarium wilt, plant on right inoculated with Foc GFP and plant on left inoculated with sterile millet. (C,D) A Cavendish root 50 dpi, showing hyphae present in the intercellular spaces between cortical cells. (E) A sample from a Lady Finger plant at 70 dpi, showing a decaying root with mycelial growth unconfined and throughout the cortical tissue. (F) Lady Finger roots 20 dpi, showing a mycelial network covering entire root tip. (G) Lady Finger plant at 20 dpi inoculated with Foc GFP and not showing symptoms of Fusarium wilt. (H) A Cavendish root sample 30 dpi, with macroconidia forming on the outside of root surface. Scale bars represent 20 μm.