多种杀机制和Streptomyces sp.的潜在应用 抗击P-10菌株与形成花朵的Prorocentrum donghaienseense的P-10菌株
Chenyu Yang1, Wei Xiang1, Wei Lun Ng2,3
1College of Ocean and Earth Sciences, Xiamen University, Xiang'an South Road, Xiamen, Fujian 361102, China.
Journal of applied microbiology
|May 2, 2025
概括
杆菌种 (Streptomyces) sp. 在这种情况下. 通过溶解Prorocentrum donghaiense,P-10有效控制有害藻类的繁殖. 这种细菌利用直接的细胞接触和生物活性化合物来抑制藻类生长和光合作用.
科学领域:
- 海洋微生物学 海洋微生物学
- 藻类杀菌剂的发展.
背景情况:
- 有害藻类繁殖 (HABs) 构成重大的生态和经济威胁.
- 普罗罗中心 (Prorocentrum donghaiense) 是沿海水域HAB的主要致病原体.
研究的目的:
- 为了评估Streptomyces sp.的杀菌潜力. 普10队对阵普罗中心东海恩斯队.
- 调查藻类杀菌作用的机制,并评估现实世界的适用性.
主要方法:
- 通过溶解速率的确定来评估藻类杀菌功效.
- 识别生物活性化合物 (N-乙三胺) 和酶活性 (细胞酶).
- 显微镜分析 (SEM,TEM) 来观察细胞相互作用和损伤.
主要成果:
- 杆菌种 (Streptomyces) sp. 在这种情况下. 在96小时内,P-10实现了对P. donghaiense的高溶解率 (95%的上游生物,80%的髓菌).
- N-乙三胺抑制藻类光合作用 (IC50: 37.88 μg·L-1) 和细胞酶降解细胞壁.
- 显微镜检查显示了细胞包围,细胞壁损伤和细胞质真空化.
结论:
- 杆菌种 (Streptomyces) sp. 在这种情况下. P-10对P. donghaiense表现出强大的杀菌活性.
- 细菌采用直接封闭和间接机制,涉及生物活性化合物和细胞酶.
- 这种细菌对控制P. donghaiense在自然环境中的开花充满希望.
相关概念视频
Gene Regulation in Microbial Communities: Quorum Sensing
954
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
954
Production of Antibiotics
265
Penicillin, one of the earliest and most widely used antibiotics, is produced industrially by the filamentous fungus Penicillium chrysogenum. Large stirred-tank bioreactors ranging from tens to hundreds of thousands of liters maintain tightly controlled temperature, pH, and dissolved oxygen conditions to support fungal metabolism and maximize antibiotic yield. Penicillin is a secondary metabolite, synthesized primarily during the stationary growth phase, which requires a carefully managed...
265
Production of Biopesticides
108
Biopesticides offer a sustainable alternative to chemical pesticides, utilizing microbial agents to control agricultural pests. Bacillus thuringiensis (Bt) is a widely employed bacterium known for its potent insecticidal activity. Bt biopesticides are favored for their specificity to insect pests, minimal environmental impact, and natural degradability.Mechanism of Bt Toxin Action Bt produces insecticidal crystal (Cry) proteins during its sporulation phase. These proteins form parasporal...
108


