微生物生物农药在小麦中斑的管理中的有效性
Collins Bugingo1, Dalitso Yabwalo2, Madalyn Shires3
1Oregon State University, Crop and Soil Science , Corvallis, Oregon, United States; collins.bugingo@oregonstate.edu.
Plant disease
|May 1, 2025
概括
含有Bacillus物种的微生物生物杀虫剂有效控制了小麦的斑病. 这些生物制剂为综合性害虫管理计划提供了有希望的可持续解决方案.
科学领域:
- 植物病理学 植物病理学
- 微生物生态学 微生物生态学
- 农业科学 农业科学
背景情况:
- 由Pyrenophora tritici-repentis* (Ptr) 引起的斑是一种主要的小麦疾病,导致大量的产量损失.
- 有效和可持续的管理策略对于全球小麦生产至关重要.
- 微生物生物农药正作为合成化学品的替代品获得越来越多的关注.
研究的目的:
- 评估商业微生物生物农药对斑病的疗效.
- 在受控条件下评估特定微生物剂和化学处理的性能.
- 确定生物农药在小麦综合性害虫管理 (IPM) 战略中的潜力.
主要方法:
- 在实验室中评估菌生长抑制的Pyrenophora tritici-repentis*.
- 温室试验评估小麦植物的斑严重性降低.
- 微生物生物农药 (*Bacillus subtilis*, *Bacillus amyloliquefaciens*, *Streptomyces lydicus*) 与化学处理 (过氧化+过氧酸) 和未经处理的对照药物的比较.
主要成果:
- *细菌细菌*, *细菌氨基基面菌* 和 *Streptomyces lydicus* 在体外完全抑制了Ptr菌株的生长.
- 过氧化+过氧化酸在试验室中显示了部分抑制Ptr菌株生长.
- 在温室试验中,微生物生物杀虫剂显著减少了斑的严重程度10%~28%.
- 在降低疾病严重程度方面, *Bacillus* 种类表现出最高的疗效.
结论:
- 商业微生物生物杀虫剂,特别是 *Bacillus* 种类,在控制斑病方面是有效的.
- 这些发现支持使用微生物生物农药作为小麦综合病虫害管理的可行组成部分.
- 对作用机制的进一步研究,如诱导系统性抵抗,是有必要的.
相关概念视频
Biological 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...
Microbe-Plant Interactions
Microbe-plant interactions represent a dynamic spectrum of associations shaped by intricate chemical signaling. These interactions can be neutral, beneficial, or detrimental, and profoundly influence plant physiology, growth, and ecosystem function. The plant microbiome, comprising bacteria, fungi, archaea, protists, and viruses, plays a pivotal role in mediating these effects through surface colonization, internal colonization, or systemic symbiosis.Mutualistic associations, particularly with...
Production of Biopesticides
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...


