Ym2的结构多样性,这是一种赋予对小麦黄色马赛克病毒耐药性的基因
Wenjing Xu1,2,3,4, Xiaoyi Xu5, Kohei Mishina6,7
1Crop Research Institute, Shandong Academy of Agricultural Sciences (SAAS), Jinan, 250100, Shandong, China.
概括
Ym2基因的等位基因变异为中国的耐小麦黄色马赛克病毒 (WYMV) 种植提供了潜力. 研究人员确定了14个功能Ym2单元型,但目前在中国小麦胚胎质中没有一个存在.
科学领域:
- 植物遗传学 植物遗传学
- 农作物科学 农作物科学
- 分子生物学分子生物学
背景情况:
- 小麦黄色马赛克病毒 (WYMV) 显著降低冬季小麦的产量和质量.
- 开发抗WYMV的小麦品种对于疾病管理至关重要,因为病毒在土壤中存在.
- 来自Aegilops sharonensis的Ym2基因赋予了对WYMV的抵抗力,并编码了一个CC-NBS-LRR蛋白.
研究的目的:
- 为了研究面包小麦基因库中的Ym2基因的等位基因变异.
- 为了确定功能Ym2单元类型赋予抗 WYMV.
- 评估中国小麦生殖质中Ym2等位基因的存在,以评估其繁殖潜力.
主要方法:
- 数据序列分析,包括先前发布的和新获取的数据.
- 鉴定和表征Ym2单元类型.
- 对WYMV耐药性的哈普洛型功能评估.
主要成果:
- 总共有22个Ym2单元类型被确定.
- 发现这些单元型中的14个在赋予WYMV耐药性的过程中具有功能性.
- 功能性单质类型包括非同义氨基酸变体和编码区域核酸插入.
- 所有已识别的功能Ym2单元型都存在于美国和日本小麦胚胎质中.
- 在分析的中国小麦生殖质中没有检测到功能Ym2单元型.
结论:
- 对Ym2基因存在显著的等位基因变异,为培育耐WYMV面包小麦提供了资源.
- 在中国的胚胎质中缺乏功能Ym2等位基因,表明 WYMV耐药品种的繁殖机会被错失了.
- 未来在中国的育种努力可以利用已识别的功能Ym2单元型来开发耐药的小麦品种.
更多相关视频
07:42Mosaic Analysis of Gene Function in Postnatal Mouse Brain Development by Using Virus-based Cre Recombination
Published on: August 1, 2011
12.4K
08:58Isolation and Identification of Waterborne Antibiotic-Resistant Bacteria and Molecular Characterization of their Antibiotic Resistance Genes
Published on: March 3, 2023
8.0K
相关概念视频
The Fluid Mosaic Model
178.4K
The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of membranes and serves as a foundation for future membrane-related studies. The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral molecules are loosely bound, defining the cell’s border and providing fluidity for optimal function.
178.4K
Gene Flow
37.9K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
37.9K
Structure of a Gene
15.8K
A gene is the fundamental unit of heredity. Every individual has two copies of each gene, one inherited from each parent. Although most people contain the same genes, there is a small fraction that is slightly different amongst people. A gene with a small difference in its sequence of DNA bases forms different alleles, contributing to different phenotypes.
However, only 1% of the DNA is composed of genes that encode proteins; the rest, 99% is non-coding DNA. This non-coding DNA performs...
However, only 1% of the DNA is composed of genes that encode proteins; the rest, 99% is non-coding DNA. This non-coding DNA performs...
15.8K
Prokaryotic Gene Structure and Organization
2.2K
Prokaryotic genomes exhibit a streamlined organization of coding and non-coding regions essential for gene expression and protein synthesis. While coding regions contain the genetic instructions for proteins or functional RNAs, non-coding regions regulate the precise transcription and translation of these genes.Coding Regions: Proteins and RNAsThe primary coding regions, known as structural genes, include sequences transcribed into messenger RNA (mRNA) and ultimately translated into...
2.2K
What are Viruses?
128.2K
Overview
128.2K
Fluid Mosaic Model
16.7K
Scientists identified the plasma membrane in the 1890s and its principal chemical components (lipids and proteins) by 1915. The model for plasma membrane structure, proposed in 1935 by Hugh Davson and James Danielli, was the first model to be widely accepted in the scientific community. The model was based on the plasma membrane's "railroad track" appearance in early electron micrographs. Davson and Danielli theorized that the plasma membrane's structure resembled a sandwich...
16.7K
