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Genomic Features of Open Chromatin Regions (OCRs) in Wild Soybean and Their Effects on Gene Expressions
Transcription activation is tightly associated with the openness of chromatin, which allows direct contact between transcriptional regulators, such as transcription factors, and their targeted DNA for downstream gene activation. However, the annotation of open chromatin regions (OCRs) in the wild so...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8146116/ https://www.ncbi.nlm.nih.gov/pubmed/33923056 http://dx.doi.org/10.3390/genes12050640 |
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author | Huang, Ming-Kun Zhang, Ling Zhou, Li-Meng Yung, Wai-Shing Li, Man-Wah Lam, Hon-Ming |
author_facet | Huang, Ming-Kun Zhang, Ling Zhou, Li-Meng Yung, Wai-Shing Li, Man-Wah Lam, Hon-Ming |
author_sort | Huang, Ming-Kun |
collection | PubMed |
description | Transcription activation is tightly associated with the openness of chromatin, which allows direct contact between transcriptional regulators, such as transcription factors, and their targeted DNA for downstream gene activation. However, the annotation of open chromatin regions (OCRs) in the wild soybean (Glycine soja) genome is limited. We performed assay for transposase-accessible chromatin using sequencing (ATAC-seq) and successfully identified 22,333 OCRs in the leaf of W05 (a wild soybean accession). These OCRs were enriched in gene transcription start sites (TSS) and were positively correlated with downstream gene expression. Several known transcription factor (TF)-binding motifs were also enriched at the OCRs. A potential regulatory network was constructed using these transcription factors and the OCR-marked genes. Furthermore, by overlapping the OCR distribution with those of histone modifications from chromatin immunoprecipitation followed by sequencing (ChIP-seq), we found that the distribution of the activation histone mark, H3K4me3, but not that of the repressive H3K27me3 mark, was closely associated with OCRs for gene activation. Several putative enhancer-like distal OCRs were also found to overlap with LincRNA-encoding loci. Moreover, our data suggest that homologous OCRs could potentially influence homologous gene expression. Hence, the duplication of OCRs might be essential for plant genome architecture as well as for regulating gene expression. |
format | Online Article Text |
id | pubmed-8146116 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-81461162021-05-26 Genomic Features of Open Chromatin Regions (OCRs) in Wild Soybean and Their Effects on Gene Expressions Huang, Ming-Kun Zhang, Ling Zhou, Li-Meng Yung, Wai-Shing Li, Man-Wah Lam, Hon-Ming Genes (Basel) Article Transcription activation is tightly associated with the openness of chromatin, which allows direct contact between transcriptional regulators, such as transcription factors, and their targeted DNA for downstream gene activation. However, the annotation of open chromatin regions (OCRs) in the wild soybean (Glycine soja) genome is limited. We performed assay for transposase-accessible chromatin using sequencing (ATAC-seq) and successfully identified 22,333 OCRs in the leaf of W05 (a wild soybean accession). These OCRs were enriched in gene transcription start sites (TSS) and were positively correlated with downstream gene expression. Several known transcription factor (TF)-binding motifs were also enriched at the OCRs. A potential regulatory network was constructed using these transcription factors and the OCR-marked genes. Furthermore, by overlapping the OCR distribution with those of histone modifications from chromatin immunoprecipitation followed by sequencing (ChIP-seq), we found that the distribution of the activation histone mark, H3K4me3, but not that of the repressive H3K27me3 mark, was closely associated with OCRs for gene activation. Several putative enhancer-like distal OCRs were also found to overlap with LincRNA-encoding loci. Moreover, our data suggest that homologous OCRs could potentially influence homologous gene expression. Hence, the duplication of OCRs might be essential for plant genome architecture as well as for regulating gene expression. MDPI 2021-04-25 /pmc/articles/PMC8146116/ /pubmed/33923056 http://dx.doi.org/10.3390/genes12050640 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Huang, Ming-Kun Zhang, Ling Zhou, Li-Meng Yung, Wai-Shing Li, Man-Wah Lam, Hon-Ming Genomic Features of Open Chromatin Regions (OCRs) in Wild Soybean and Their Effects on Gene Expressions |
title | Genomic Features of Open Chromatin Regions (OCRs) in Wild Soybean and Their Effects on Gene Expressions |
title_full | Genomic Features of Open Chromatin Regions (OCRs) in Wild Soybean and Their Effects on Gene Expressions |
title_fullStr | Genomic Features of Open Chromatin Regions (OCRs) in Wild Soybean and Their Effects on Gene Expressions |
title_full_unstemmed | Genomic Features of Open Chromatin Regions (OCRs) in Wild Soybean and Their Effects on Gene Expressions |
title_short | Genomic Features of Open Chromatin Regions (OCRs) in Wild Soybean and Their Effects on Gene Expressions |
title_sort | genomic features of open chromatin regions (ocrs) in wild soybean and their effects on gene expressions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8146116/ https://www.ncbi.nlm.nih.gov/pubmed/33923056 http://dx.doi.org/10.3390/genes12050640 |
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