土壤营养素的修改增加了叶子内植物之间跨王国资源竞争的潜力
Zoe A Hansen1, Michael R Fulcher2, Nicholas Wornson1
1Department of Plant Pathology, University of Minnesota, Saint Paul, MN 55108, United States.
ISME communications
|November 25, 2024
概括
土壤营养丰富会改变草原草中的真菌叶子内细胞,改变它们的碳使用和专业化. 这影响了微生物竞争和生态系统功能,如营养循环.
科学领域:
- 微生物生态学 微生物生态学
- 植物与微生物的相互作用
- 生态系统科学 生态系统科学
背景情况:
- 叶子内植物对生态系统功能至关重要,包括营养循环.
- 了解营养供应如何影响内生植物群落至关重要,但尚未得到充分探索.
- 土壤营养丰富可以影响植物微生物动态.
研究的目的:
- 为了研究长期增加营养供应 (,,,微量营养素 - NPKμ) 对*Andropogon gerardii*的叶子内细胞的影响.
- 评估细菌和真菌内细胞的分类构成和碳使用表型的变化.
- 评估植物叶子中的微生物之间的资源竞争潜力的转变.
主要方法:
- 用NPKμ修改和对照图进行长期实地实验.
- 从A. gerardii*培养的可培养的细菌和真菌叶子内细胞的培养和分析.
- 内生植物碳的使用概况和分类组合的表征.
主要成果:
- 增加的NPKμ供应改变了真菌内细胞的分类组成和碳使用模式,但不是细菌内细胞.
- 修改营养素的土地上的真菌内植物显示出不同的碳使用概况和增加的专业化.
- 观察到细菌和真菌内细胞之间的资源利基重叠增加,营养素供应更高.
结论:
- 土壤营养丰富显著改变了叶子环境中的真菌内生菌群落.
- 真菌内生菌群体的变化可能会改变王国间的微生物竞争.
- 这些变化对大规模生态系统功能有潜在的影响,例如营养循环和植物生产力.
相关概念视频
02:11The Roles of Bacteria and Fungi in Plant Nutrition
35.1K
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.
35.1K
02:40Epiphytes, Parasites, and Carnivores
12.9K
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...
12.9K
02:23The Soil Ecosystem
19.6K
Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:
19.6K
02:35Key Elements for Plant Nutrition
18.7K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.7K
01:30Environmental Applications of Microorganisms
2
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
2