对染色质可访问性的遗传影响揭示了玉米复杂特征的分子机制
Yongli Zhu1, Heiyuen Ngan2, Weilun Liu2
1National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China.
The Plant journal : for cell and molecular biology
|August 19, 2025
概括
这项研究绘制了玉米叶中调节元素及其遗传基础的地图. 它将染色体可访问性变异与基因调节和农学特征联系起来,揭示了全基因组关联研究结果背后的机制.
科学领域:
- 基因组学就是基因组学.
- 植物生物学 植物生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 控制基因表达和玉米的多样性.
- 将CREs中的非编码变异与表型联系在一起的机制尚不清楚.
- 可访问的色素区域 (ACR) 提供了对CRE功能的洞察.
研究的目的:
- 在ACR中描述玉米叶CREs.
- 为了确定染色质可访问性变异的遗传基础.
- 将非编码变体与基因调节和农学特征联系起来.
主要方法:
- 从214个玉米杂交系中生成的ATAC-seq数据.
- 确定了82,174个共识ACR.
- 绘制的染色体可访问量性特征位点 (caQTLs) 和集成的多omics数据.
主要成果:
- 发现了82,174个ACR,其中39.55%显示变化.
- 确定了27004个caQTL,其中1398个破坏了TF绑定站点.
- 将56个caACR与51个农学特征联系起来,特别是开花时间,并确定了像ZmZIM30这样的候选基因.
结论:
- 提供了玉米叶的高分辨率地图.
- 解读了染色质可访问性的遗传控制.
- 将非编码的caQTL与GWAS基础上的分子机制连接起来,用于农学特征.
相关概念视频
Position-effect Variegation
6.5K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
6.5K
Dihybrid Crosses
75.8K
Overview
75.8K
Inheritance
539
Gregor Mendel's pioneering work on the principles of inheritance fundamentally transformed our understanding of how traits are transmitted from generation to generation. His experiments with pea plants laid the groundwork for the discovery of genes, discrete units within organisms that control heredity.
Each gene exists in pairs, and the combination of these genes from both parents forms an individual's genotype. This genotype is a blueprint of potential traits. Examples of genotype...
Each gene exists in pairs, and the combination of these genes from both parents forms an individual's genotype. This genotype is a blueprint of potential traits. Examples of genotype...
539
Chromatin Position Affects Gene Expression
23.7K
Chromatin is the massive complex of DNA and proteins packaged inside the nucleus. The complexity of chromatin folding and how it is packaged inside the nucleus greatly influences access to genetic information. Generally, the nucleus' periphery is considered transcriptionally repressive, while the cell's interior is considered a transcriptionally active area.
Topologically Associated Domains (TADs)
The 3-dimensional positioning of chromatin in the nucleus influences the...
Topologically Associated Domains (TADs)
The 3-dimensional positioning of chromatin in the nucleus influences the...
23.7K
Epistasis Analysis
5.2K
Although Mendel chose seven unrelated traits in peas to study gene segregation, most traits involve multiple gene interactions that create a spectrum of phenotypes. When the interaction of various genes or alleles at different locations influences a phenotype, this is called epistasis. Epistasis often involves one gene masking or interfering with the expression of another (antagonistic epistasis). Epistasis often occurs when different genes are part of the same biochemical pathway. The...
5.2K
Human Genetics
719
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
719


