Constructing a coherent text and achieving genre-specific communicative purposes are crucial aspects of academic writing. However, to date, it remains unclear how coherence and genre are related to each other conceptually. This paper seeks to extend previous research on the influence of genre on coherence relations by examining how writers of applied linguistics research articles (RAs) organise sentences in the discussion section to achieve communicative purposes of the RA discussion genre. The analyses suggest that the writers of the selected discussions might have related sentences to each other differently depending on the purposes they sought to achieve. Possible reasons for relational features are considered in light of the nature of the RA discussion genre and/or the applied linguistics discipline.