菌寄生虫Pythium物种的表面特性及其与模型材料的相互作用
Katarina Majtan1,2, Maja Klimentić2, Jan Martinik1
1Research Institute of Brewing and Malting, Lípová 15, 120 44, Prague, Czech Republic.
Heliyon
|June 13, 2024
概括
生物控制剂Pythium oligandrum具有水友的表面和负电荷. 物理化学模型准确地预测了它对磁珠的粘附,特别是在pH3.
科学领域:
- 微生物学 微生物学
- 生物物理学的生物物理.
- 表面化学 表面化学
背景情况:
- Pythium oligandrum是一种用于生物控制的土壤菌株.
- 它表现出对病原性真菌的对抗性和寄生性活性.
- 了解其表面特性对于优化其应用至关重要.
研究的目的:
- 为了描述Pythium oligandrum的表面特性.
- 应用物理化学相互作用模型 (热力学,DLVO,XDLVO) 来量化对磁珠 (MB) 的粘附.
- 评估弱物理化学相互作用在粘附中的作用.
主要方法:
- 试验确定接触角度,泽塔电位和尺寸.
- 使用热力学,DLVO和XDLVO模型计算粘附强度 (AI).
- 模型预测与Pythium spp.实验AI数据的比较. 和 MB. 和 MB.
主要成果:
- 在Pythium spp. 的情况下. 呈现出类似的水友表面特性 (ΔG_TOT > 0) 和负表面电荷.
- DLVO模型,结合Lifshitz-van der Waals和静电力,最好地描述了AI.
- 在pH 3时发生最大的粘附,与DLVO预测一致.
- 在胞上表面突出增强了粘附效率.
结论:
- 物理化学模型,特别是DLVO,有效地预测了Pythium oligandrum对模型表面的粘附.
- 表面特性表明Pythium spp.之间存在有利的相互作用. 和病原性真菌. 病原性真菌.
- 这项研究提供了对生物控制剂粘附机制的见解.
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