首页 园况介绍 科学研究 园林园艺 环境教育 党建文化 纪检监察 信息公开 简报年报
首页 > 科学研究 > 研究成果 > 论文

论文

Decoding the chromatin accessibility in Andrographis paniculata genome, a case study of genome-wide investigation of the cis-regulatory elements in medicinal plants

论文作者Mingkun Huangab, Yufang Hua, Ling Zhanga, Hua Yanga, Chen Fenga, Chunhong Jiangf, Ning Xief, Difa Liuf, Shilin Chenbd, Jihua Wange, Wei Sunbc
刊物Acta Pharaceutica Sinica B
标识符

10.1016/j.apsb.2024.06.012

摘要

Medicinal plants have the ability to synthesize a large number of pharmaceutical metabolites, the production and regulation of which are influenced by both intrinsic signals (e.g., the spatial and temporal stage) and extrinsic environmental conditions (e.g., temperature, light availability, and water availability)1. According to the Encyclopedia of DNA Elements (ENCODE) project
, accessible chromatin regions (ACRs) served essential roles in maintaining the genome architecture and gene regulation in both mammals and plants. Nowadays, identifying ACRs within medicinal plant genomes remains a challenge, as genomic sequences have been determined for numerous species yet the characterization of such functional elements lags. In this study, we selected Andrographis paniculata (APA) as a model system to map ACRs genome-wide by the assay for transposase-accessible chromatin with sequencing (ATAC-seq) method. We aimed to uncover the genomic features of ACRs as well as their association with the expression of genes involved in secondary metabolite biosynthesis (e.g., andrographolide) within medicinal plants .

Two ATAC-seq replicates were generated, yielding approximately 106–125 million (M) filtered reads . After mapping to the APA genome, a total of 30,532 enriched peaks were identified, and found to be enriched at transcription start sites (TSSs) . ATAC-seq signals were positively correlated with gene expression levels ). Genomic annotation revealed that these ACRs were mainly located in the exonic (35%), distal intergenic (34%) and promoter (14%) regions .


Decoding the chromatin accessibility in Andrographis paniculata genome, a case study of genome-wide investigation of the cis-regulatory elements in medicinal plants.pdf