GAFF is thought to play an important role in the defense mechanism of the yearly terminal conn to prevent the infection of fungi.

• 球茎外层组织富含这种蛋白,内层薄壁组织无此蛋白。 认为GAFP在阻止真菌侵染当年生顶生和侧生球茎的防卫机制中起重要作用。