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- W2890769103 abstract "Summary Anthocyanins are involved in several aspects of development and defence in poplar ( Populus spp.). Although, over the past decades, significant progress has been made in uncovering these anthocyanin biosynthetic and regulatory mechanisms, the fundamental understanding of the epigenetic regulation in this pathway is still largely unclear. Here, we isolated a histone H3K9 demethylase gene JMJ25 from Populus and characterized its role in anthocyanin biosynthesis by genetic and biochemical approaches. JMJ25 was induced by continuous dark treatment. Overexpression of JMJ25 led to downregulated expression of anthocyanin biosynthetic genes in transgenic poplar, resulting in a significant reduction in anthocyanin content. ChIP‐qPCR assays showed that JMJ25 could directly associate with MYB182 chromatin and dynamically demethylate at H3K9me2. Furthermore, JMJ25 also affected the DNA methylation levels of MYB182 . By contrast, knockout of JMJ25 by CRISPR/Cas9 resulted in ectopic anthocyanin accumulation under dark condition and increased expression of anthocyanin biosynthetic genes. Our results support a model in which JMJ25 directly affects MYB182 expression by altering the histone methylation status of its chromatin and DNA methylation, resulting in repression of anthocyanin accumulation. This study uncovered an epigenetic mechanism that modulates anthocyanin biosynthesis in poplar." @default.
- W2890769103 created "2018-09-27" @default.
- W2890769103 creator A5000924409 @default.
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- W2890769103 creator A5052893976 @default.
- W2890769103 creator A5074432763 @default.
- W2890769103 creator A5083048330 @default.
- W2890769103 date "2018-10-23" @default.
- W2890769103 modified "2023-10-16" @default.
- W2890769103 title "Histone H3K9 demethylase JMJ25 epigenetically modulates anthocyanin biosynthesis in poplar" @default.
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- W2890769103 doi "https://doi.org/10.1111/tpj.14092" @default.
- W2890769103 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30218582" @default.
- W2890769103 hasPublicationYear "2018" @default.
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