wˌɛɹ ɐ hˈoʊst vɚɹˈaɪəɾi ɪz ˈeɪbəl tə ɹˈɛkəɡnˌaɪz ænd mˈaʊnt ɐ ɹᵻsˈɪstəns ɹᵻspˈɑːns tə ðə pɹˈɛzəns əvən ɪfˈɛktɚ, ðɪ ɪfˈɛktɚɹ ɪz ɹᵻfˈɜːd tʊ æz ɐn ˈævɪɹələns pɹˈoʊtiːn.
Where a host variety is able to recognise and mount a resistance response to the presence of an effector, the effector is referred to as an Avirulence protein.