铜压力塑造了杏仁虫及其相关细菌的动态行为
Yijing Shi1, Lu Ma2, Min Zhou2
1SCNU Environmental Research Institute, School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China.
The ISME journal
|June 7, 2024
概括
铜压力会影响杏仁菌与细菌的共生. 有益细菌促进宿主健康,而寄生细菌恶化疾病,影响环境生物安全.
科学领域:
- 微生物学 微生物学
- 环境科学 环境科学
- 生态生态学 生态生态学
背景情况:
- 杏仁菌与细菌的相互作用在生态系统中至关重要,杏仁菌作为关键消费者,与细菌形成共生关系.
- 铜对虫捕食至关重要,但共生细菌可以逃避其抗菌作用.
- 铜对这些共生动态的影响还不太清楚.
研究的目的:
- 为了研究铜压力对虫生长的影响以及它们与细菌的共生关系.
- 为了确定不同类型的共生体 (有益与寄生虫) 在铜应力下如何影响这些相互作用.
- 阐明了在非生物压力下控制阿米巴-细菌共生的机制.
主要方法:
- 控制的实验室实验使虫及其相关细菌暴露在不同度的铜中.
- 微观观察和分析杏仁的生长,细胞命运和细菌殖民.
- 评估共生物类型 (有益或寄生性) 以及其在铜应力下对宿主-共生物关系的影响.
主要成果:
- 铜度升高会对虫生长产生负面影响,改变细胞过程.
- 这种类型的共生生物极大地调节了对铜压力的反应.
- 有益的共生体促进了共生稳定性,而寄生性共生体则显示出虫殖民的增加.
- 铜压力将有益的共生转移到宿主优势,并加剧了寄生虫共生体的病原性.
结论:
- 铜应激显著改变了阿米巴-细菌共生系统,结果取决于共生物类型.
- 有益的共生体可以在铜压力下赋予虫的弹性,而寄生性共生体则会增加风险.
- 环境中的铜积累可能会影响病原体传播和生物安全,强调了解这些相互作用的生态重要性.
相关概念视频
01:29Microbial Morphologies
Bacterial and archaeal cells exhibit remarkable diversity in shape and structure, critical in their adaptability and functionality. Among bacteria, the most commonly observed shapes include cocci and bacilli. Cocci are spherical and may exist singly or in groupings such as pairs (diplococci), chains (streptococci), clusters (staphylococci), or tetrads. Bacilli, in contrast, are rod-shaped and can also occur as single cells, in pairs, or chains, depending on their environmental and genetic...
01:23Stringent Response in E. coli
Bacterial growth is closely tied to nutrient availability, with cells proliferating exponentially under favorable conditions and entering a stationary phase when resources become scarce. This transition is mediated by a regulatory mechanism known as the stringent response, which allows bacteria to adapt to nutrient deprivation by modulating gene expression and metabolic activity.During nutrient scarcity, intracellular amino acid levels decline. It results in the accumulation of uncharged tRNAs...
01:30Other Stress Responses in Bacteria
Bacteria have global regulatory systems that control several types of stress mechanisms. These include Pho regulon and the heat shock response, which are essential systems for environmental adaptation, such as nutrient limitation and proteotoxic stress. The Pho regulon and the heat shock response exemplify bacterial resilience, enabling rapid adaptation to fluctuating environmental conditions.Pho RegulonBacteria require phosphorus for essential cellular processes, including nucleic acid...
01:18Other Unique Bacteria
Magnetic bacteria exhibit a directed movement called magnetotaxis, driven by structures called magnetosomes. These magnetosomes consist of chains of magnetic particles made of either magnetite (Fe₃O₄) or greigite (Fe₃S₄) and are organized in a linear conformation by a protein scaffold within invaginations of the cell membrane. The bacteria align along the north–south magnetic field lines, much like a compass needle. They are typically microaerophilic or anaerobic and are commonly found near the...
01:27Diversity of Protists IV
Amoebozoa represent a diverse group of terrestrial and aquatic protists that utilize lobe-shaped pseudopodia for locomotion and feeding. This characteristic differentiates them from the Rhizaria, which possess threadlike pseudopodia. The primary classifications within Amoebozoa include gymnamoebas, entamoebas, and the plasmodial and cellular slime molds. Phylogenetic evidence indicates that Amoebozoa diverged from a lineage that ultimately gave rise to fungi and animals.Gymnamoebas and...
01:24Microbes and Other Elemental Cycles
Microbial activity plays a pivotal role in the biogeochemical cycling of iron and manganese, especially at the redox gradients characteristic of stratified aquatic environments. These cycles are driven by microbial transformations between oxidized and reduced forms of the metals, allowing organisms to exploit them for metabolic energy and structural purposes.Iron Cycling Across Redox GradientsIn neutral, oxygen-rich surface waters, iron is predominantly found in its oxidized, insoluble ferric...