(有限) 无脊椎动物热适应的可预测性
James A deMayo1, Gregory J Ragland1
1Department of Integrative Biology, University of Colorado Denver, 1151 Arapahoe St, Denver, CO 80204, USA.
The Journal of experimental biology
|March 7, 2025
概括
进化基因组学揭示,虽然温度适应反应可以在物种中重复,但可预测性有限. 研究表明,热冲击蛋白 (Hsp) 基因有一定的一致性,但整体的进化反应是特异性的.
科学领域:
- 进化生物学是进化的生物学.
- 基因组学就是基因组学.
- 生理学 生理学 生理学
背景情况:
- 进化基因组方法对于理解生理变异和进化至关重要.
- 识别与生理过程相关的候选基因可以表明进化作用.
- 预测适应气候变化需要可重复的进化反应.
研究的目的:
- 综合有关无脊椎动物进化遗传学和比较转录学的文献.
- 评估进化反应对温度的可重复性,在种群和物种内部和跨种群和物种之间.
- 调查参与热应激反应的候选基因组 (热冲击蛋白,蛋白质溶解,免疫).
主要方法:
- 进化遗传学和比较转录基因学研究的文学综合.
- 分析温度反应在不同生物尺度 (在/跨种群,物种) 的可重复性.
- 在热冲击蛋白 (Hsp),蛋白质溶解和免疫基因组中对候选基因识别的调查.
主要成果:
- 发现了强有力的证据表明温度反应的可重复性,甚至跨物种.
- 然而,对实验室选择和地理变化的反应具有高度的特异性.
- 在热冲击蛋白 (Hsp),蛋白质溶解和免疫群体内确定了候选基因,但在少数研究中.
结论:
- 模式表明进化对自然选择反应的可预测性有限,即使是在物种内部.
- 讨论了气候变化适应的预测建模的影响.
- 目前进化遗传学研究的局限性和未来的研究方向得到了强调.
相关概念视频
Responses to Heat and Cold Stress
13.3K
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.
13.3K
Body Temperature
858
The body's temperature, measured in degrees, is determined by the balance between heat production and dissipation to the surrounding environment. For instance, if exercising vigorously, the body will produce more heat, causing sweat and dissipating that heat. Despite extreme environmental conditions and physical exertion, the human temperature-control system maintains a constant core body temperature (the temperature of deep tissues, which are the tissues located beneath the skin and other...
858
Requirements for Human Life
7.5K
The Earth and its atmosphere have provided humans with air, water, and food, but these are not the only requirements for survival. Humans also require a specific range of temperature and pressure that the Earth and its atmosphere provides.
Oxygen
Atmospheric air is only about 20 percent oxygen, but that oxygen is a key component of the chemical reactions that keep the body alive, including the reactions that produce ATP. Brain cells are susceptible to a lack of oxygen because they require a...
Oxygen
Atmospheric air is only about 20 percent oxygen, but that oxygen is a key component of the chemical reactions that keep the body alive, including the reactions that produce ATP. Brain cells are susceptible to a lack of oxygen because they require a...
7.5K
Thermoregulation
859
The human body has a sophisticated thermoregulation system that employs negative feedback mechanisms to maintain an optimal core temperature. When the core temperature drops, peripheral and central thermoreceptors send signals to the hypothalamus, activating the heat-promoting center. This center triggers several responses aimed at increasing the core temperature. First, vasoconstriction reduces the flow of warm blood from internal organs to the skin so that the heat is not lost from the skin,...
859
Thermosensation
30.3K
Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
30.3K
Le Chatelier's Principle: Changing Temperature
28.9K
Consistent with the law of mass action, an equilibrium stressed by a change in concentration will shift to re-establish equilibrium without any change in the value of the equilibrium constant, K. When an equilibrium shifts in response to a temperature change, however, it is re-established with a different relative composition that exhibits a different value for the equilibrium constant.
To understand this phenomenon, consider the elementary reaction:
To understand this phenomenon, consider the elementary reaction:
28.9K


