Abstract: This disclosure relates to a transgenic plant or plant tissue or plant cell comprising at least one polynucleotide encoding a polypeptide comprising a variable domain of a heavy-chain antibody (VHH) specifically binding to a sphingolipid of a fungus. This disclosure further relates to a method for protecting at least part of a plant, plant tissue or plant cell from an infection with a plant pathogen, for inhibiting the growth of a plant pathogen on at least part of a plant, plant tissue or plant cell, or for increasing pathogen resistance of at least part of a plant, plant tissue or plant cell.