多样化的替代菌病原性通过农林系统中的叶子-根-微生物组动态改变了植物-土壤反
Lifen Luo1,2, Zhengping Wang2, Xiubei Yan2
1State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling 712100, China.
Horticulture research
|July 23, 2025
概括
像Alternaria panax这样的叶子病原体可以影响植物-土壤反. 中度感染促进有益的土壤微生物和积极的反,而严重的感染破坏了这一点,导致负面的反和影响农业的可持续性.
科学领域:
- 生态生态学 生态生态学
- 植物病理学 植物病理学
- 土壤科学 土壤科学
背景情况:
- 跨物种相互作用对于生态系统的稳定性至关重要.
- 在多样化的生态系统中,叶子病原体在植物-土壤反 (PSF) 中的作用经常被忽视.
研究的目的:
- 调查叶状病原体病原性多样性对PSF的影响.
- 了解农业林业系统中对树枝球微生物群落的影响.
主要方法:
- 叶子 *Alternaria panax* 感染的评估影响.
- 分析了植物的防御反应 (以雅斯蒙酸为媒介).
- 检查了树根球微生物社区组合和PSF.
主要成果:
- 中度 *A. panax* 感染通过斯蒙酸 (JA) 激活了射出到根的防御.
- 这增强了2-氨基乙硫酸的分泌,促进了抑制疾病的微生物和阳性PSF.
- 过度感染局部化了叶子中的JA防御,破坏了微生物丰富,导致负PSF.
结论:
- 叶片病原体的强度极大地调节了植物与土壤的反.
- 了解病原体的影响是农林可持续性的关键.
- 植物防御信号通路影响树根球相互作用和土壤健康.
相关概念视频
The Roles of Bacteria and Fungi in Plant Nutrition
41.2K
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
41.2K
Epiphytes, Parasites, and Carnivores
13.2K
Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the...
13.2K
Defenses Against Pathogens and Herbivores
26.6K
Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
26.6K


