Two Master Transcription Factors for Fruit Ripening, NOR and Its Homologue NOR-like1: Multiple Roles in tomato

Abstract

Non-ripening (NOR) and NOR-like1, two members of the tomato NAC transcription factor (TF) family, exhibit a high degree of homology and are well-recognized for their robust control of fruit ripening. The discovery of NOR and NOR-like1 has greatly advanced our understanding of the regulation of tomato fruit ripening and their function studies beyond fruit ripening. This review systematically summarizes the current perception of nor natural mutant (nor mutant), as well as the roles of NOR and NOR-like1 in tomato fruit ripening and beyond. Additionally, this review highlights the functional similarity and divergence of NOR and NOR-like1. In summary, we discuss the functional diversity and underlying mechanisms of NOR and NOR-like1 in tomato and propose a molecular regulatory network dominated by NOR and NOR-like1.

Keywords: NOR; NOR-like1; ripening; tomato fruit; transcription factor.