Auxin is one of the most important plant growth regulators of plant morphogenesis and response to environmental stimuli. Although the biosynthesis pathway of auxin has been elucidated, the mechanisms regulating auxin biosynthesis remain poorly understood. The transcription of auxin biosynthetic genes is precisely regulated by complex signaling pathways. When the genes are expressed, epigenetic modifications guide mRNA synthesis and therefore determine protein production. Recent studies have shown that different epigenetic factors affect the transcription of auxin biosynthetic genes. In this review, we focus our attention on the molecular mechanisms through which epigenetic modifications regulate auxin biosynthesis.
Keywords: DNA methylation; auxin biosynthesis; chromatin remodeling; epigenetic modifications; histone H2B monoubiquitination; histone H3 methylation; histone acetylation.
Copyright © 2022 Wang, Di, Luo, Zhang, Li, Guo and Wu.