潜在的生物控制微生物导致Plasmopara viticola中的减弱致病性
Xiaomeng Shi1,2, Hongmiao Shen3, Yacong Wang1
1College of Forestry, Hebei Agricultural University, Baoding 071000, China.
Phytopathology
|January 11, 2024
概括
葡萄菌病原体Plasmopara viticola的致病性随着重复培养而降低. 从P. viticola中分离的特定细菌和真菌显示出对葡萄菌的高生物控制效率.
科学领域:
- 植物病理学 植物病理学
- 微生物学 微生物学
- 生物控制生物控制
背景情况:
- 葡萄菌 (GDM) 的致病原体Plasmopara viticola在重复的亚培养后表现出降低的致病性.
- 这种减弱的潜在机制和生物控制剂的潜力仍然未得到充分探索.
研究的目的:
- 为了调查在亚培养期间Plasmopara viticola中致病性减弱的原因.
- 识别和评估与P. viticola相关的微生物剂,以了解它们对GDM的生物控制潜力.
主要方法:
- 从不同世代的P. viticola.中分离和培养微生物.
- 对GDM发病率的分离微生物菌株生物控制疗效的评估.
- 使用形态和分子技术识别有效的生物控制菌株.
主要成果:
- 亚培养P. viticola导致GDM发病率下降和微生物种群的转变.
- 四种特定的微生物菌株 (K2,P1,P5,K7) 在亚培养时增加了种群密度.
- 细菌菌株K2 (Curtobacterium herbarum) 和真菌菌株P1 (Thecaphora amaranthi) 和P5 (Acremonium sclerotigenum) 对GDM显示出显著的生物控制功效 (87.5-100.0%).
结论:
- 库尔托细菌 (Curtobacterium herbarum),甲花 (Thecaphora amaranthi) 和亚克雷莫尼乌斯 (Acremonium sclerotigenum) 是导致P. viticola病原性减弱的关键因素.
- 这些已识别的菌株表现出强大的生物控制活性,对抗葡萄菌.
- 这项研究是首次报告C. herbarum和T. amaranthi对GDM的生物控制潜力.
更多相关视频
08:34Generation of In-Frame Gene Deletion Mutants in Pseudomonas aeruginosa and Testing for Virulence Attenuation in a Simple Mouse Model of Infection
Published on: January 8, 2020
6.8K
04:52Author Spotlight: Discovering New Biopesticides from Bioactive Soil Microbe-Derived Natural Products
Published on: July 26, 2024
1.5K
相关概念视频
01:28Biological Methods for Microbial Control
Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
01:28Gene Regulation in Microbial Communities: Quorum Sensing
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,...
01:24Bacterial Phylum Tenericutes
The phylum Tenericutes, which includes the single class Mollicutes, comprises bacteria that lack cell walls. The term "Mollicutes" derives from the Latin word mollis, meaning "soft." These organisms are among the smallest known and are commonly referred to as mycoplasmas due to the prominence of the genus Mycoplasma, which includes well-known human pathogens. Despite their inability to stain gram-positively (a result of their lack of cell walls), mycoplasmas are phylogenetically related to the...
01:28Regulation of Bacterial Virulence
Pathogenic bacteria employ a range of regulatory mechanisms to modulate the expression of virulence genes in response to environmental and host-derived signals. These mechanisms ensure that virulence factors are expressed only under favorable conditions, thereby optimizing infection and survival strategies.Mechanisms of Virulence RegulationKey regulatory strategies include:Two-Component Systems: These consist of a membrane-bound sensor kinase and a cytoplasmic response regulator. Environmental...