The regulatory landscape of Arabidopsis thaliana roots at single-cell resolution.

The regulatory landscape of Arabidopsis thaliana roots at single-cell resolution.
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DOI:
10.1038/s41467-021-23675-y
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发表时间:
2021-06-07
影响因子:
16.6
通讯作者:
Cuperus JT
Cuperus JT
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Dorrity MW;Alexandre CM;Hamm MO;Vigil AL;Fields S;Queitsch C;Cuperus JT

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The scarcity of accessible sites that are dynamic or cell type-specific in plants may be due in part to tissue heterogeneity in bulk studies. To assess the effects of tissue heterogeneity, we apply single-cell ATAC-seq to Arabidopsis thaliana roots and identify thousands of differentially accessible sites, sufficient to resolve all major cell types of the root. We find that the entirety of a cell’s regulatory landscape and its transcriptome independently capture cell type identity. We leverage this shared information on cell identity to integrate accessibility and transcriptome data to characterize developmental progression, endoreduplication and cell division. We further use the combined data to characterize cell type-specific motif enrichments of transcription factor families and link the expression of family members to changing accessibility at specific loci, resolving direct and indirect effects that shape expression. Our approach provides an analytical framework to infer the gene regulatory networks that execute plant development. Existing studies of the chromatin accessibility, the primary mark of regulatory DNA, in Arabidopsis are based mainly on bulk samples. Here, the authors report the regulatory landscape of Arabidopsis thaliana roots at single-cell resolution.
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