基因基因甲基化对大豆基因表达的调节作用意味着它在育种中的潜在实用性
Ying Wang1, Hongwei Xun1, Jiameng Lv1
1Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China.
Plant biotechnology journal
|January 31, 2025
概括
大豆中的细胞因子甲基化 (mCG) 是由GmMET1基因调节的,影响基因表达,发育和耐压力. 功能丧失突变揭示了GmMET1bb的存在.
科学领域:
- 表观遗传学和基因组学
- 植物分子生物学 植物分子生物学
背景情况:
- 细胞因子甲基化 (mCG) 是一种具有不完全理解作物功能的关键遗传表观遗传修饰.
- 大豆 (Glycine max) 的表观遗传调节是其农业重要性的关键.
研究的目的:
- 研究GmMET1基因在保持大豆中的细胞因子甲基化 (mCG) 中的作用.
- 阐明mCG对大豆基因表达,生长,发育和应激反应的影响.
主要方法:
- 在大豆中使用CRISPR-Cas9基因编辑生成GmMET1功能丧失突变体.
- 对生成的突变物进行了全面的甲基组和转录组分析.
- 在正常和压力条件下 (寒冷,干旱) 突变物体的表型特征.
主要成果:
- 观察到GmMET1a和GmMET1b之间的功能冗余,GmMET1b在维持mCG方面发挥了更为关键的作用.
- 两种GmMET1基因的完全淘汰是致命的;全基因组的mCG水平与GmMET1表达相关.
- 确定了mCG调节的基因,影响了诸如莉酸代谢等过程,突变增加了对寒冷和干旱的耐受性.
结论:
- 由GmMET1s调节的mCG在调节基因表达方面发挥着至关重要的作用,决定大豆的生长,发育和应激适应.
- 了解mCG监管为通过有针对性的遗传策略提高大豆产量和适应能力提供了潜在的机会.
相关概念视频
01:46Epigenetic Regulation
30.9K
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
30.9K
02:30Genomic Imprinting and Inheritance
33.2K
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
33.2K
02:23Master Transcription Regulators
6.9K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
6.9K
02:35Chromatin Position Affects Gene Expression
23.2K
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...
23.2K
01:59Plant Breeding and Biotechnology
18.8K
Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
18.8K
01:23Regulation of Expression at Multiple Steps
864
The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
864