Histone H3K4 methyltransferase ATX1 positively regulates secondary wall biosynthesis in interfascicular fibers in Arabidopsis

ABSTRACT: Secondary wall thickening in the sclerenchyma cells is strictly controlled by a complex network of transcription factors in vascular plant. However, little is known about the epigenetic mechanism regulating secondary cell wall biosynthesis. Genome-wide analysis revealed that the up-regulation of genes involved in secondary wall formation during stem development is largely coordinated by increasing level of H3K4 tri-methylation. In this study, we identified that ARABIDOPSIS HOMOLOG of TRITHORAX1 (ATX1), a H3K4-histone methyltransferase, positively regulates secondary wall deposition mainly through activating the expression of secondary wall NAC master switch genes, SECONDARY WALL-ASSOCIATED NAC DOMAIN PROTEIN1 (SND1) and NAC SECONDARY WALL THICKENING PROMOTING FACTOR1 (NST1).

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE153705 | GEO | 2020/11/29

REPOSITORIES: GEO