营养物质和温度与trifloxystrobin相互作用,影响三种水生菌种的生长
Laís Conceição Menezes da Silva1,2, Isdore Ogechi Agim1, Alexander Feckler1
1iES Landau, Institute for Environmental Sciences, University of Kaiserslautern-Landau (RPTU), Landau in der Pfalz, 76829Germany.
Environmental toxicology and chemistry
|December 17, 2025
概括
水生菌对杀菌剂trifloxystrobin敏感,特别是在更高的温度下. 这种敏感性对于评估水生生态系统中的农药风险至关重要.
科学领域:
- 环境科学 环境科学
- 菌类学 菌类学是指菌类学.
- 生态毒理学 生态毒理学
背景情况:
- 水生菌体 (AHs) 是水生环境中的重要分解者.
- 对AHs的生态毒理学数据有限,这阻碍了准确的环境风险评估.
研究的目的:
- 在不同的温度和营养水平下,研究三种AH物种对杀菌剂trifloxystrobin的敏感性.
- 了解非生物因素如何影响trifloxystrobin对AHs的生态毒理学影响.
主要方法:
- 在21天内评估了Alatospora acuminata,Articulospora tetracladia和Tetracladium marchalianum的辐射生长. 在21天内评估了Alatospora acuminata,Articulospora tetracladia和Tetracladium marchalianum的辐射生长.
- 菌暴露在温度 (12,16,20°C),营养水平 (0-1.5%的麦芽提取物) 和trifloxystrobin度 (0-625μg/L) 的环境中.
主要成果:
- 观察到温度,营养素和trifloxystrobin毒性之间的显著相互作用.
- 温度强化了trifloxystrobin的毒性,即使在低μg/L度下,也会影响AH的生长.
- 对Articulospora tetracladia的最低效应度 (EC10) 是0.1μg/L.
结论:
- 甲状腺对trifloxystrobin具有很高的敏感性,特别是在高温下.
- 目前对农药的环境风险评估可能低估了对水生真菌的风险.
- 对于准确的农药监管,对AHs进行进一步的生态毒理学研究至关重要.
相关概念视频
01:23Physical Methods for Controlling Microbial Growth: Temperature
902
Heat is a widely used method to control microbial growth by targeting and denaturing cellular proteins, thereby killing or inactivating microbes. This method's effectiveness is quantified using parameters such as the thermal death point (TDP), thermal death time (TDT), and decimal reduction time (D value). TDP represents the lowest temperature at which all microorganisms in a liquid suspension are eliminated within 10 minutes, whereas TDT is the time necessary to achieve sterilization at a...
902
01:27Factors Influencing Microbial Growth: Temperature
1.0K
Microorganisms display remarkable adaptations, enabling them to thrive in diverse ecological niches across a wide range of temperatures. Temperature profoundly influences microbial growth by affecting enzymatic activity, membrane fluidity, and other cellular processes.Each microorganism operates within a specific temperature range defined by three cardinal points: minimum, optimum, and maximum. Below the minimum temperature, membranes lose fluidity, halting transport processes. Above the...
1.0K
01:29Methods for Controlling Microbial Growth
1.5K
Microbial growth control refers to various methods employed to inhibit, reduce, or eliminate microorganisms to ensure safety and hygiene across different settings. These methods are categorized based on the target environment and the level of microbial control required.Biocides are versatile agents designed to control microorganisms by either inhibiting their growth or outright killing them. These agents work through various physical, chemical, mechanical, or biological mechanisms. The...
1.5K
02:45Responses to Heat and Cold Stress
14.6K
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.
14.6K
01:28Factors Influencing Microbial Growth: Osmolarity
690
Osmolarity is the measure of solute concentration in a solution. It plays a critical role in determining water availability for organisms. Water moves across semipermeable membranes through osmosis, flowing from regions of lower solute concentration (more dilute) to regions of higher solute concentration (more concentrated).In high-solute environments, microbial cells lose water, leading to dehydration and inhibited growth. The extent to which water is available to microbes in such environments...
690