相关实验视频

Updated: Jun 30, 2025

Isolation of Native Soil Microorganisms with Potential for Breaking Down Biodegradable Plastic Mulch Films Used in Agriculture

Isolation of Native Soil Microorganisms with Potential for Breaking Down Biodegradable Plastic Mulch Films Used in Agriculture

Published on: May 10, 2013

土壤微生物群落在农业土壤中转化脱氧尼瓦伦醇的潜力 - - 一个土壤微观宇宙研究

Kilian G J Kenngott¹, Katherine Muñoz²

¹Institute for Environmental Sciences (iES) Landau, RPTU Kaiserslautern-Landau, Fortstraße 7, Landau, 76829, Rhineland-Palatinate, Germany.

Mycotoxin research

|March 20, 2024

概括

土壤微生物迅速转化农业土壤中的真菌毒素脱氧尼瓦伦醇 (DON). 这种自然消散,与无菌条件不同,表明DON转化主要是微生物的,中间产品的进一步分解.

科学领域:

环境科学环境科学
微生物学微生物学
土壤科学土壤科学

背景情况:

有毒性在谷物田中的Fusarium物种是脱氧尼瓦伦醇 (DON) 的来源.
DON可以通过降雨进入土壤,在那里微生物转化是可能的,但在野外条件下了解得很少.
之前对液体提取物的研究并没有准确地反映环境转变.

研究的目的:

调查农业土壤中脱氧尼瓦伦醇 (DON) 的微生物转化潜力.
在现实的微观宇宙条件下,量化DON消散并识别转化产物.
为了将土壤微生物群落特征与DON转化率相关联.

主要方法:

微观宇宙实验使用六种农业土壤,在两个度 (0.5和5μggg−1) 的DON中进行实验.
监测DON消散和转化产品超过35天,与无菌对照相比.
通过脂衍生物脂肪酸 (PLFA) 分析,通过呼吸和社区结构评估土壤微生物活动.

主要成果:

在非灭菌土壤中,DON的消散速度很快 (50%在0.6-3.7天内),而在无菌对照中,消散速度微不足道.
形成3-基托-脱氧尼瓦伦醇 (3-基托-DON) 和3-epi-脱氧尼瓦伦醇 (3-epi-DON),然后进行进一步的转化.
一个趋势表明,在具有更大,更活跃的微生物群落和较低的真菌-细菌比率的土壤中,DON转化速度更快.

结论:

土壤微生物群落主要负责农业土壤中DON的消散.
DON经过转化成中间产品,随后被降解.
微生物群体的特征,如大小,活性和真菌与细菌的比率,可能会影响DON转化速率.

关键词:

3-epi-DONON 的意思是什么?3-基托-DONON 的使用情况.没有,没有,没有,没有.土壤微生物的转变.土壤的微观世界

更多相关视频

Isolation and Screening from Soil Biodiversity for Fungi Involved in the Degradation of Recalcitrant Materials

Isolation and Screening from Soil Biodiversity for Fungi Involved in the Degradation of Recalcitrant Materials

Published on: May 16, 2022

Isolation of Culturable Yeasts and Molds from Soils to Investigate Fungal Population Structure

Isolation of Culturable Yeasts and Molds from Soils to Investigate Fungal Population Structure

Published on: May 27, 2022

相关概念视频

Overview of Nitrogen Metabolism

Overview of Nitrogen Metabolism

Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...

The Roles of Bacteria and Fungi in Plant Nutrition

The Roles of Bacteria and Fungi in Plant Nutrition

Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.

The Soil Ecosystem

The Soil Ecosystem

Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components: