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- W2935131632 abstract "Abstract Nutrient remobilization during leaf senescence nourishes the growing plant. Understanding the regulation of this process is essential for reducing our dependence on nitrogen fertilizers and increasing agricultural sustainability. Our lab is interested in chromatin changes that accompany the transition to leaf senescence. Previously, darker green leaves were reported for Arabidopsis thaliana hac1 mutants, defective in a gene encoding a histone acetyltransferase in the CREB-binding protein family. Here, we show that two Arabidopsis hac1 alleles display delayed age-related developmental senescence, but have normal dark-induced senescence. Using a combination of ChIP-seq for H3K9ac and RNA-seq for gene expression, we identified 44 potential HAC1 targets during age-related developmental senescence. Genetic analysis demonstrated that one of these potential targets, ERF022 , is a positive regulator of leaf senescence. ERF022 is regulated additively by HAC1 and MED25, suggesting MED25 recruits HAC1 to the ERF022 promoter to increase its expression in older leaves." @default.
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- W2935131632 date "2019-04-04" @default.
- W2935131632 modified "2023-09-24" @default.
- W2935131632 title "The HAC1 Histone Acetyltransferase Promotes Leaf Senescence via Regulation of ERF022" @default.
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- W2935131632 doi "https://doi.org/10.1101/599902" @default.
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