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

Area of Science:

• Plant Biology
• Molecular Genetics

Background:

• The non-ripening (NOR) gene and its homolog NOR-like1 are crucial NAC transcription factors in tomato.
• These genes significantly influence tomato fruit ripening processes.

Purpose of the Study:

• To review the current understanding of the nor natural mutant.
• To summarize the roles of NOR and NOR-like1 in tomato fruit ripening and other developmental processes.
• To highlight functional similarities and divergences between NOR and NOR-like1.

Main Methods:

• Systematic literature review of NOR and NOR-like1 functions.
• Analysis of existing data on tomato fruit ripening regulation.
• Comparative analysis of NOR and NOR-like1.

Main Results:

• NOR and NOR-like1 show high homology and control fruit ripening.
• Their functions extend beyond fruit ripening.
• Functional similarities and differences between NOR and NOR-like1 have been identified.

Conclusions:

• NOR and NOR-like1 exhibit functional diversity with distinct underlying mechanisms.
• A molecular regulatory network primarily driven by NOR and NOR-like1 in tomato is proposed.