Hypersusceptibility of gif1 grains to postharvest fungal pathogens. (A) Panicles of the wild‐type (Zhonghua11) (WT) and gif1 mutant grown in the field under high humidity conditions. Insets are the WT and gif1 seeds. Note that the surface of the gif1 seeds is covered by mould, whereas no infection by the pathogen is observed on WT grains. (B, C) Scanning electron microscopy (SEM) images of Alternaria sp. on the gif1 glume surface. Bar, 10 μm. (D, E) SEM images of Rhizopus sp. on the gif1 glume surface. Bar, 10 μm.