相关实验视频
Updated: Sep 16, 2025

08:10
Environmentally Induced Heritable Changes in Flax
Published on: January 26, 2011
10.3K
公共花园揭示了树对气候变化的基因组易感性和脆弱性
Xianliang Zhu1,2,3, Hairun Zhang1, Zhaohua Lu1
1Key Laboratory of National Forestry and Grassland Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, 510520, China.
The Plant journal : for cell and molecular biology
|July 8, 2025
概括
全球气候变化威胁着树木的适应不良. 这项研究将基因组指标与Eucalyptus pellita的健康状况联系起来,发现叶子特征更好地预测适应比生长,这对森林保护至关重要.
科学领域:
- 人口基因组学是人口的基因组学.
- 气候变化生物学
- 林业科学 林业科学
背景情况:
- 加快的气候变化和物种引入引发了对树木不适应的担忧.
- 对基因组指标预测树木不适应和适应性的理解有限.
研究的目的:
- 为了分析Eucalyptus pellita在不同来源的种群基因组学.
- 评估基因组指标,局部适应和健康代理之间的关系.
- 评估基因组对未来气候变化的脆弱性.
主要方法:
- 对295个家族和28个Eucalyptus pellita的种群基因组分析.
- 两个常见的花园实验来评估表型特征.
- 基因型与环境的关联和全基因组的关联研究.
主要成果:
- 基因组敏感度指标 (异卵性,近亲繁殖,基因组负载) 显示了地理模式.
- 确定了198个与气候相关的和2388个与特征相关的位置.
- 澳大利亚原产地对气候变化的基因组脆弱性更高.
- 叶子的功能特征与不适应指标的联系比生长属性更强.
结论:
- 基因组易感性和脆弱性是理解森林树本地 (不良) 适应的关键.
- 叶子形态发生显示强烈的自然选择信号.
- 基因组洞察力可以指导气候变化下的森林管理.
相关概念视频
Adaptations that Reduce Water Loss
26.4K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
26.4K
Gene-Environment Interactions
573
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...
573
Responses to Heat and Cold Stress
13.9K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.9K
Gene Flow
35.6K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.6K
Background and Environment Affect Phenotype
6.7K
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...
6.7K
What is Climate?
18.9K
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
18.9K

