Mengmeng Yin

Author    Correspondence author
Rice Genomics and Genetics, 2024, Vol. 15, No.   
Received: 01 Jan., 1970    Accepted: 01 Jan., 1970    Published: 03 Dec., 2024

The principal objective of this study was to examine the impact of environmental factors on the expression of R2R3-MYB genes in purple rice and the subsequent effects on anthocyanin biosynthesis and plant adaptation. The study revealed that the expression of R2R3-MYB transcription factors (TFs), which are essential for anthocyanin biosynthesis, is markedly affected by diverse environmental factors, including light, temperature, and oxidative stress. Specifically, the OsC1 gene in rice was identified as a key regulator of anthocyanin production, which in turn enhanced the plant's tolerance to oxidative stress by reducing reactive oxygen species and improving photosynthetic efficiency. Furthermore, the study underscored the intricate regulatory mechanisms of these TFs, which encompass diverse levels of control, including natural variations in gene promoters, upstream TFs, and posttranslational modifications. The findings highlight the significance of R2R3-MYB TFs in the adaptive responses of purple rice to environmental stresses, particularly through the modulation of anthocyanin biosynthesis. This enhanced understanding of the regulatory networks can inform future genetic modifications aimed at improving crop resilience and nutritional quality.