小麦SWI3B SWI/SNF染色体重塑复合物的子单位通过抑制酸生物合成来控制粉易感性
Wanzhen Chen1, Yixian Fu1, Mengdi Zhang1
1College of Life Sciences, Qingdao University, Qingdao 266071, China.
Journal of fungi (Basel, Switzerland)
|January 27, 2026
概括
小麦对粉状菌的敏感性是由TaSWI3B基因调节的,该基因抑制了酸生物合成. 了解这种机制有助于改善小麦.
科学领域:
- 植物病理学 植物病理学
- 分子遗传学 分子遗传学
- 小麦育种 小麦育种
背景情况:
- 小麦粉状菌,是由 *Blumeria graminis f. sp. 引起的 这就是为什么B.g. tritici (*B.g. tritici* (*B.g. 麦 (Triticum aestivum*),显著影响面包小麦 (*Triticum aestivum*) 的生产.
- 了解小麦易受性的分子基础对于开发耐药品种和确保粮食安全至关重要.
- SWI/SNF染色体重塑复合体在各种生物过程中发挥作用,但其在小麦-病原体相互作用中的特定功能尚未完全理解.
研究的目的:
- 确定调节小麦对*B.g.易感性的新基因. 三位式的*.
- 阐明已识别的基因影响小麦粉病的分子机制.
- 探索向该基因以增强小麦耐药性的潜力.
主要方法:
- 在小麦中*TaSWI3B*的基因表达分析 (过度表达和沉默).
- 染色体免疫沉 (ChIP) 来评估TaSWI3B丰富的目标基因促进体.
- 定量PCR测量盐酸生物合成途径基因的基因转录水平.
- 在*B.g.下对小麦植物的表型评价 三感染. 三感染.
主要成果:
- 确定小麦*TaSWI3B*基因是对*B.g.敏感性的积极调节者. 三位式的*.
- 过度表达*TaSWI3B*增加了敏感性,而其沉默降低了对粉状菌的敏感性.
- 发现TaSWI3B通过改变其促进体的核细胞占用率来抑制酸生物合成激活剂*TaSARD1*的转录.
- 淘汰*TaSWI3B*增强了粉耐药性,这部分取决于酸生物合成基因*TaSARD1*和*TaICS1*.
结论:
- 小麦SWI/SNF复合物的SWI3B子单元通过抑制*TaSARD1*转录来表观遗传抑制酸生物合成.
- 这种TaSWI3B的表观遗传调节促进了小麦对粉状菌的易感性.
- 向*TaSWI3B*提供了一种潜在的策略,用于基因改进小麦对粉的耐药性.
更多相关视频
06:09An Easy and Flexible Inoculation Method for Accurately Assessing Powdery Mildew-Infection Phenotypes of Arabidopsis and Other Plants
Published on: March 9, 2021
3.4K
06:56Purification of High Molecular Weight Genomic DNA from Powdery Mildew for Long-Read Sequencing
Published on: March 31, 2017
12.2K
相关概念视频
Nucleosome Remodeling
11.1K
Nucleosomes are the basic units of chromatin compaction. Each nucleosome consists of the DNA bound tightly around a histone core, which makes the DNA inaccessible to DNA binding proteins such as DNA polymerase and RNA polymerase. Hence, the fundamental problem is to ensure access to DNA when appropriate, despite the compact and protective chromatin structure.
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
11.1K
Biosynthesis of Nucleic Acids
1.1K
Nucleic acid biosynthesis is a fundamental biochemical process that produces the purine and pyrimidine nucleotides essential for DNA and RNA synthesis. This pathway maintains a balanced nucleotide pool, preventing imbalances that could jeopardize genetic integrity and cellular function. Given the crucial role of nucleotides, their synthesis is tightly regulated to ensure proper cellular homeostasis.Purine BiosynthesisThe biosynthesis of purine nucleotides begins with ribose-5-phosphate, a...
1.1K
Chromatin Packaging
22.0K
Each human somatic cell contains 6 billion base-pairs of DNA. Each base-pair is 0.34 nm long, which means that each diploid cell contains a staggering 2 meters of DNA. How is such a long DNA strand packed inside a nucleus measuring only 10 - 20 microns in diameter?
The chromatin
In combination with specialized DNA binding protein called Histones, the DNA double helix forms a compact DNA: protein complex called chromatin. The chromatin itself is further compacted into higher-order...
The chromatin
In combination with specialized DNA binding protein called Histones, the DNA double helix forms a compact DNA: protein complex called chromatin. The chromatin itself is further compacted into higher-order...
22.0K
Acid Suppressive Drugs for Peptic Ulcer Disease: Antacids
685
In the complex environment of the gastric lumen, excessive acid secretion can lead to the formation or worsening of ulcers within the delicate mucosal layer. Antacids, such as sodium bicarbonate and calcium carbonate, provide relief by neutralizing this acid, transforming it into harmless salt and water. This neutralization process raises the gastric pH from a highly acidic level of 1 to a more basic 3-4, reducing the acidity within the stomach.
However, this neutralization reaction between...
However, this neutralization reaction between...
685
Spreading of Chromatin Modifications
9.4K
The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer...
Writers
The writer...
9.4K
Chromatin Structure Regulates pre-mRNA Processing
8.2K
In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
The chromatin structure, especially...
The chromatin structure, especially...
8.2K
