Fig. 1.

Phenotype of non-inoculated and inoculated roots of cultivated and wild rice varieties. a Visible phenotype of roots of C, C + F, W and W + F groups. b, c, d and e Microscopic observation of safranin-stained roots of C (b), C + F (c), W (d) and W + F (e), respectively. The four treatments were non-inoculated cultivated rice (C), cultivated rice inoculated with Magnaporthe oryzae (C + F), non-inoculated wild rice (W), and wild rice inoculated with M. oryzae (W + F). Black lines are the scale bars, which represent 2 cm in (a) and 5 μm in (b, c, d, and e). Pink arrows indicate the representative parts of infected roots. Blue arrows indicate the plant epidermal regions, and orange arrows indicate the cortex regions