Triticeae
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA319131 | ENA |
REPOSITORIES: ENA
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Project description:The yield of wheat is highly impacted by environmental stresses. The combinatorial regulation of sequence-specific transcription factors(TFs) defines a regulatory network that underlies plant stress responses. Here we created a comprehensive catalog of genomic binding sites of 115 TFs underlying abiotic stress responses by leveraging DAP-seq in Triticum Urartu, along with epigenomic profiles. The majority of gene distant TF binding sites(TFBS) are embedded in transposable elements(TEs), whose functional relevance was supported by a signature of purifying selection and active epigenomic features. Furthermore, ~30% non-TE TFBS share high sequence similarity with TE-embeded TFBS, potentially derived from Triticeae-specific TEs and have almost no sequence homology in non-Triticeae species. The expansion of TE-derived TFBS in wheat linked to wheat-specific stress responsive genes, suggesting that TEs are an important driving force for regulatory innovation. Altogether, TEs have significantly and continuously shaped regulatory network in wheat adaptation.
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