微生物群落在温暖气候的中比它们的寒冷气候对应物更热敏
Xia-Ming Zhu1,2, Jun-Qiong Chen1, Yu Du3
1College of Life Sciences, Nanjing Normal University, Nanjing, China.
Frontiers in microbiology
|April 30, 2024
概括
肠道微生物有助于适应不同的温度,温暖气候对热变更更敏感. 这项研究强调了肠道微生物群在动物热适应中的关键作用.
科学领域:
- *生态学和进化生物学
- * 微生物学 微生物学
- * 动物生理学动物生理学
背景情况:
- *环境温度显著影响动物的肠道微生物群落.
- *肠道微生物群在宿主适应环境条件,特别是温度方面发挥着作用.
- * 要了解爬行动物的热适应,需要研究肠道微生物对温度波动的反应.
研究的目的:
- * 调查肠道微生物群在不同气候起源的两种虫种的热适应中的作用.
- * 为了比较肠道微生物群落的组成和功能,以应对不同的环境温度.
- * 测试有关微生物群体敏感性和适应温度能力的假设,在温暖和寒冷气候.
主要方法:
- * 实验涉及两种 (温暖气候的Leiolepis reevesii和寒冷气候的Phrynocephalus przewalskii) 在两周内适应三种温度 (20,28,36°C).
- *分析便和小肠微生物群落,使用16S rRNA基因安普利康测序.
- * 微生物组成和功能基因丰度的跨种类和内种类变异的比较.
主要成果:
- * 便微生物群表现出比小肠微生物群更明显的物种差异.
- *微生物群对温度的反应在物种之间有所不同; *L. reevesii* (温暖气候) 在温度变化时表现出细菌种群更大的变化.
- *两种物种,特别是L. reevesii,调整了与新陈代谢和信息处理有关的微生物功能类别,以应对温度变化. 在 *P. przewalskii* 中增强的碳水化合物代谢基因表明,支持寒冷气候适应.
结论:
- *肠道微生物群有助于适应其本土的热环境.
- *温暖气候中的微生物群落 (*L. reevesii*) 比冷气候中的微生物群落 (*P. przewalskii*) 更加敏感于温度变化.
- *这项研究证实了肠道微生物群在宿主热适应中的作用,并突出了物种对环境温度的特定反应.
相关概念视频
Responses to Heat and Cold Stress
13.5K
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.
13.5K
Thermosensation
30.4K
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...
30.4K
Requirements for Human Life
8.1K
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...
8.1K
Testing a Claim about Mean: Unknown Population SD
3.5K
A complete procedure of testing a hypothesis about a population mean when the population standard deviation is unknown is explained here.
Estimating a population mean requires the samples to be approximately normally distributed. The data should be collected from the randomly selected samples having no sampling bias. There is no specific requirement for sample size. But if the sample size is less than 30, and we don't know the population standard deviation, a different approach is used;...
Estimating a population mean requires the samples to be approximately normally distributed. The data should be collected from the randomly selected samples having no sampling bias. There is no specific requirement for sample size. But if the sample size is less than 30, and we don't know the population standard deviation, a different approach is used;...
3.5K
Body Temperature
301
Body temperature reflects the equilibrium between heat production and heat loss within the body. Most heat is generated by metabolically active tissues, particularly the liver, heart, brain, kidneys, and endocrine organs. At rest, skeletal muscles contribute 20–30% of total heat production, but during vigorous exercise, this can increase up to 30–40 times.
The average body temperature is approximately 37°C (98.6°F) and typically ranges from 36.1–37.2°C...
The average body temperature is approximately 37°C (98.6°F) and typically ranges from 36.1–37.2°C...
301
Factors Affecting Body Temperature
4.1K
As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may include:
Factors may include:
4.1K


