相关实验视频

Updated: Sep 5, 2026

QTL Mapping and CRISPR/Cas9 Editing to Identify a Drug Resistance Gene in Toxoplasma gondii

QTL Mapping and CRISPR/Cas9 Editing to Identify a Drug Resistance Gene in Toxoplasma gondii

Published on: June 22, 2017

基于目标测序 (GBTS) 的基因映射的基因定型揭示了小麦品种弗兰德斯的条纹生抗性的协同相互作用

Lei Liu¹, Jinyu Han¹, Dandan Zhang²

¹State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik

|July 21, 2025

概括

鉴定了来自品种弗兰德斯的三种小麦条纹抗基因 (YrFLA.1, YrFLA.2, YrFLA.3). 这些基因,特别是YrFLA.3,提供了显著的成年植物耐药性 (APR),并协同工作来增强小麦.

科学领域:

植物遗传学和育种.
农作物病理学农作物病理学
分子标记物分子标记物

背景情况:

在中国,小麦品种弗兰德斯30多年来一直表现出耐久成年植物对条纹的抗性 (APR).
了解这种耐药性的遗传基础对于开发新的耐药品种至关重要.
条纹生对全球小麦产量构成重大威胁.

研究的目的:

识别和描述赋予成年植物对小麦条纹生的耐药性的基因组区域.
分析耐药位点的遗传结构和相互作用.
评估这些抗性基因在中国小麦品种中的分布和有效性.

主要方法:

基因组分析F2:7复合同血统 (RIL) 种群的基因组分析,该种群来自Avocet S和弗兰德斯之间的交叉.
在多个环境中对RIL和父体进行评价,以确定条纹抗性.
使用GenoBaits®WheatSNP16K阵列和对679种中国小麦品种的哈普洛型分析进行基因型鉴定.

主要成果:

在染色体臂1BL,3BL和7BL上发现了三种定量特征位点 (QTL) 对于条纹抗性,这些位点被指定为YrFLA.1,YrFLA.2和YrFLA.3.
YrFLA.3显示出最高的个体有效性,但YrFLA.1,YrFLA.2和YrFLA.3之间的协同相互作用显著增强了耐药性.
这些QTL的存在使疾病的严重程度降低了21.81-28.76%,并且在生压力下改善了千粒重量. 这些位点的哈普类型存在于65.83% (YrFLA.1),18.99% (YrFLA.2) 和43.44% (YrFLA.3) 的中国品种中,减少了17.57-37.54%的疾病严重程度.

结论:

YrFLA.1,YrFLA.2和YrFLA.3共同有助于长久的成年植物对小麦的条纹生的抵抗.
这些位置之间的协同相互作用对于最大化阻力至关重要.
涉及这些位点的基因金字塔化策略对于开发高产,耐用条纹耐的小麦品种至关重要.

更多相关视频

Development of Targeting Induced Local Lesions IN Genomes TILLING Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis

Development of Targeting Induced Local Lesions IN Genomes TILLING Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis

Published on: July 16, 2019

Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis

Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis

Published on: August 12, 2019

相关概念视频

Genome-wide Association Studies-GWAS

Genome-wide Association Studies-GWAS

Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...

Modern Molecular Taxonomy

Modern Molecular Taxonomy

Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...