| Indeed, the rapid lignification of the cell wall of resistant plants under the appressoria of Colletotrichum spp. |
| The appressoria or haustoria may produce a substance that increases permeability of the algal cell walls, and may penetrate the walls. |
| Algae produce sugars that are absorbed by the fungus by diffusion into special fungal hyphae called appressoria or haustoria in contact with the wall of the algal cells. |
