暂时解决的生长模式揭示了关于复杂的定量特征的多基因性质的新奇信息
Dorothy D Sweet1,2, Sara B Tirado1,3, Julian Cooper2
1Department of Agronomy and Plant Genetics, University of Minnesota, Saint Paul, Minnesota, 55108, USA.
The Plant journal : for cell and molecular biology
|October 27, 2024
概括
高分辨率无人机成像揭示了整个生长季节影响玉米植物高度的遗传因素. 这种方法增强了对复杂多基因特征的基因型与环境相互作用的理解.
科学领域:
- 植物遗传学 植物遗传学
- 农业科学 农业科学
- 现象学 是一种现象学.
背景情况:
- 植物高度是植物健康和基因型表现的关键指标.
- 传统的身高测量仅限于一个时间点,阻碍了发育分析.
- 无人驾驶飞行器 (UAV) 提供了一种持续,全季度的工厂高度监测方法.
研究的目的:
- 用无人机分析整个生长季节的植物高度变化.
- 了解植物身高的遗传基础及其与环境的相互作用.
- 为了比较植物高度和树冠覆盖数据的实用性,以评估遗传和环境影响.
主要方法:
- 在四年内使用无人机收集了高时间分辨率的植物高度数据,用于约500条玉米杂交线.
- 进行全基因组关联研究 (GWAS),以确定与植物高度和生长速度相关的遗传位置.
- 比较了从植物高度和树冠覆盖数据中得出的生长曲线,使用Fréchet距离.
主要成果:
- 基因型,年份和基因型对年份的相互作用显著解释了植物在整个发育过程中的高度变异.
- 在特定的植物生长阶段确定了717个与植物高度和生长速度相关的显著单核酸多态 (SNP).
- 植物高度增长曲线显示出比树冠覆盖曲线更大的稳定性,这表明更好地代表了基因型调制.
结论:
- 高时间分辨率的无人机数据为植物环境相互作用和复杂特征的遗传基础提供了实质性的见解.
- 植物高度动态对于理解基因型对植物生长的贡献至关重要.
- 这种方法可以增强优异基因型的识别,并为繁殖策略提供信息.
相关概念视频
01:18Polygenic Traits
64.9K
When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
64.9K
01:11Genome-wide Association Studies-GWAS
12.6K
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...
GWAS does not require the identification of the target gene involved in...
12.6K
02:05Gene Evolution - Fast or Slow?
7.0K
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
7.0K
01:35Pedigree Analysis
84.0K
Overview
84.0K
02:54Evolutionary Relationships through Genome Comparisons
5.7K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
5.7K
01:20Gene-Environment Interactions
256
Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
256