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Identifications of vernalization regulatory elements by epigenomic approaches in winter wheat

ABSTRACT: Identifications of vernalization regulatory elements by epigenomic approaches in winter wheat

PROVIDER: PRJNA971967 | ENA |

REPOSITORIES: ENA

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Identifications of vernalization regulatory elements by epigenomic approaches in winter wheat (ATAC-Seq)

Project description:Epigenetic modification plays a key role in the vernalization process and maintains gene expression states after low temperature. In this study, the Chinese main cultivar Aikang58 was used to construct the chromatin accessibility maps, expression profile and histone modification (including H3K27me3, H3K27ac, H3K36me3 and H3K4me3) maps of winter wheat before and after vernalization. We provided a crucial data resource for deep understanding of epigenome in vernalization. What’s more, important core regulatory elements and corresponding transcription factors were discovered, and the complex regulatory network of wheat vernalization was analyzed. ATAC-seq of leaf, axillary bud and shoot apex before and after vernalization

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Identifications of vernalization regulatory elements by epigenomic approaches in winter wheat (ATAC-Seq)

Project description:Identifications of vernalization regulatory elements by epigenomic approaches in winter wheat (ATAC-Seq)

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Identifications of vernalization regulatory elements by epigenomic approaches in winter wheat (RNA-Seq)

Project description:Identifications of vernalization regulatory elements by epigenomic approaches in winter wheat (RNA-Seq)

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Identifications of vernalization regulatory elements by epigenomic approaches in winter wheat

Project description:This SuperSeries is composed of the SubSeries listed below.

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Dynamic Yin-Yang regulation network of O-GlcNAcylation and phosphorylation mediates vernalization response for flowering in winter wheat

Project description:Protein post-translational modification (PTM) increases the functional diversity of the proteome and regulates numerous biological processes in eukaryotes. Two types of PTMs, O-linked-acetyl glucosamine modification (O-GlcNAc) and phosphorylation have been identified on the same amino acid, are considered as Yin-Yang modification for their antagonistic function recently. Vernalization, a prolonged cold exposure promoted flowering, is important for grain yield in temperate cereals, such as winter wheat. O-GlcNAcylation on TaGRP2 and phosphorylation on VER2 are involved in regulation of vernalization response (VRN) genes. However, less is known about how plant senses vernalization with general Yin-Yang modifications. Here we report that altering O-GlcNAc signaling by chemical inhibitors could change the vernalization response and affect flowering transition. Furthermore, we enriched O-GlcNAcylated and phosphorylated peptides from winter wheat plumules at different processing time points during vernalization by Lectin weak affinity chromatography (LWAC) and iTRAQ-TiO2, respectively. In total, about 200 O-GlcNAcylated proteins and 124 differential expressed phosphorylated proteins were identified by Mass Spectrum (MS). Based on GO enrichment, the identified O-GlcNAcylated proteins are mainly involved in response to abiotic stimulus and hormone, metabolic processing and gene expression. While dynamic phosphorylated proteins during vernalization participate in translation, transcription and metabolic processing. Of note, 31 proteins with both phosphorylation and O-GlcNAcylation modification were identified. Among them, TaGRP2 was further confirmed to participate in regulation of vernalization promoted flowering. The global modification profiles and genetic data at specific regulator suggested that the dynamic network of O-GlcNAcylation and phosphorylation on the key nodes regulate vernalization response and mediate flowering in wheat.

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Dynamic Yin-Yang regulation network of O-GlcNAcylation and phosphorylation mediatesvernalization response for flowering in winter wheat, part 2

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