The IDD Transcription Factors: Their Functions in Plant Development and Environmental Response

INDETERMINATE-DOMAIN proteins (IDDs) are a plant-specific transcription factor family characterized by a conserved ID domain with four zinc finger motifs. Previous studies have demonstrated that IDDs coordinate a diversity of physiological processes and functions in plant growth and development, including floral transition, plant architecture, seed and root development, and hormone signaling. In this review, we especially summarized the latest knowledge on the functions and working models of IDD members in Arabidopsis, rice, and maize, particularly focusing on their role in the regulatory network of biotic and abiotic environmental responses, such as gravity, temperature, water, and pathogens. Understanding these mechanisms underlying the function of IDD proteins in these processes is important for improving crop yields by manipulating their activity. Overall, the review offers valuable insights into the functions and mechanisms of IDD proteins in plants, providing a foundation for further research and potential applications in agriculture.