通过标记效应网络将遗传和环境因素联系起来,以了解特征可塑性
Rafael Della Coletta1, Sharon E Liese2, Samuel B Fernandes3
1Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN 55108, USA.
Genetics
|May 29, 2023
概括
标记效应网络提供了一种新的方法来识别与植物适应能力相关的遗传标记. 这种方法有助于开发适应气候变化的作物,因为它揭示了遗传标记物如何对环境变化做出反应.
科学领域:
- 植物遗传学 植物遗传学
- 生物信息学是一种生物信息学.
- 农业科学 农业科学
背景情况:
- 发展适应气候变化的作物对于粮食安全至关重要.
- 识别环境适应性的遗传标记是植物育种的关键.
- 现型可塑性是一种复杂的特征,受多种遗传和环境因素的影响.
研究的目的:
- 引入标记效应网络作为一种用于识别与环境适应性相关的遗传标记物的新方法.
- 探索标记效应网络在了解植物对环境变化的反应方面的实用性.
- 提供关于基因组的表型可塑性和环境调制的见解.
主要方法:
- 适应基因协同表达网络软件,用于构建标记效应网络.
- 在9个环境中利用了400种玉米杂交品种中大约2000个标记物的标记效应.
- 分析了共变标记模块及其与天气因素的关联.
主要成果:
- 成功生成标记效应网络,证明了该方法的可行性.
- 鉴定了很少存在链接不平衡的覆盖性标记物,这表明其生物相关性更高.
- 发现了与特定天气因素相关的多个标记模块,提供了对环境适应性的见解.
- 证明了标记效应网络对不同分析参数的稳定性.
结论:
- 标记效应网络为剖析植物环境适应能力的遗传基础提供了一个强大的新工具.
- 这种方法增强了我们对表型可塑性的理解,以及环境因素如何影响全基因组标记器协会.
- 这些发现支持开发气候适应性作物品种的标记辅助育种策略.
相关概念视频
Gene-Environment Interactions
380
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...
380
Heritability
242
Heritability is a statistical concept that measures the degree to which genetic differences among individuals contribute to trait variations within a population. It is a fundamental idea in genetics, often prone to misinterpretation. Heritability is expressed as a percentage, reflecting the proportion of variation in a specific trait across a population that can be linked to genetic differences. However, it's important to understand that heritability does not determine how "genetic"...
242
Background and Environment Affect Phenotype
6.6K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
6.6K
Human Genetics
629
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
629
Behavioral Genetics and Its Designs
430
Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
430
Polygenic Traits
66.1K
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...
66.1K


