相关实验视频
Updated: Sep 19, 2025

06:58
High-Throughput Assays of Critical Thermal Limits in Insects
Published on: June 15, 2020
5.3K
在暴露于热量的昆虫中,抗氧化剂,氧化应激和活性氧物种
Daniel González-Tokman1, Sebastián Villada-Bedoya1,2, América Hernández1,3
1Instituto de Ecología A. C. Xalapa, Veracruz, Mexico.
Current research in insect science
|June 16, 2025
概括
高温增加了昆虫的活性氧物种 (ROS),需要抗氧化剂来防止氧化应激. 虽然一些抗氧化剂是上调的,但它们在减轻热引起的损伤和适应方面的有效性在昆虫中尚不清楚.
科学领域:
- 环境生理学环境生理学
- 昆虫的生物化学 昆虫的生物化学
- 应激反应机制 应激反应机制
背景情况:
- 高温会提高昆虫的新陈代谢率,导致反应性氧物种 (ROS) 产量增加.
- 没有控制的ROS可以导致氧化应激,导致细胞损伤和潜在的死亡.
- 抗氧化剂对于抵消ROS和防止氧化损伤至关重要.
研究的目的:
- 审查有关高温对昆虫ROS产生影响的现有证据.
- 为了检查昆虫抗氧化防御热应激.
- 评估抗氧化剂在预防热引起的氧化损伤和适应/适应中的作用.
主要方法:
- 关于昆虫对高温的反应研究的文献综述.
- 对热下ROS产量变化的证据分析.
- 评估抗氧化剂 (酶和非酶) 的上调和功能.
主要成果:
- 对于高温对ROS产生直接影响的证据有限.
- 在短期暴露于热量时,至少有一种抗氧化剂被上调.
- 抗氧化剂有效减少生物分子损伤的证据很少;它们在热度适应/适应中的作用得到了很少的支持.
结论:
- 抗氧化剂显示出应对热应激的潜力,特别是饮食应激,但需要更多的研究.
- 像解蛋白或线粒体降解等替代机制可能会减轻ROS.
- 需要进一步的研究,以了解ROS和抗氧化剂在昆虫耐热性中的作用.
相关概念视频
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
Radical Autoxidation
2.4K
The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
2.4K
Osmoregulation in Insects
16.7K
Malpighian tubules are specialized structures found in the digestive systems of many arthropods, including most insects, that handle excretion and osmoregulation. The tubules are typically arranged in pairs and have a convoluted structure that increases their surface area.
16.7K
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

