Related Experiment Video
Updated: Sep 13, 2025
08:59
Plant-Microbe Interaction: Transcriptional Response of Bacillus Mycoides to Potato Root Exudates
Published on: July 2, 2018
12.7K
Nutrient-Driven Metabolic Activation and Microbial Restructuring Induced by Endophytic Bacillus in Blight-Affected
Quan Yang1,2,3,4,5, Shimeng Tan6, Anqi Niu1,2,3,4,5
1Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha 410004, China.
Microorganisms
|July 30, 2025
Summary
Bacillus amyloliquefaciens csuftcsp75 enhances soil nutrients and microbial activity, offering a sustainable biocontrol for forest diseases like Pinus massoniana shoot blight.
Area of Science:
- Forest Pathology
- Soil Microbiology
- Biocontrol Agents
Background:
- Climate change is accelerating forest disease outbreaks, increasing the need for sustainable biocontrol solutions.
- Pinus massoniana shoot blight is a significant forest disease requiring effective management strategies.
- Endophytic bacteria offer a promising avenue for developing novel biocontrol agents.
Purpose of the Study:
- To evaluate the impact of Bacillus amyloliquefaciens csuftcsp75 on soil properties, microbial communities, and functional metabolism in soils affected by Pinus massoniana shoot blight.
- To understand the mechanisms underlying the biocontrol efficacy of endophytic bacteria.
- To provide a theoretical basis for applying Bacillus in forest disease management.
Main Methods:
- Soil physicochemical analysis to assess nutrient availability (phosphorus, potassium).
- Carbon substrate utilization profiling (AWCD) to measure microbial metabolic activity.
- Diversity indices (Shannon, Simpson, McIntosh) to evaluate microbial community structure.
- Principal component analysis and correlation mapping to identify relationships between soil properties and microbial responses.
Main Results:
- Bacillus amyloliquefaciens csuftcsp75 significantly improved soil nutrient availability, particularly phosphorus and potassium.
- The bacterium enhanced microbial metabolic activity and sustained functional diversity in the soil.
- A dual-pathway model suggests nutrient-driven activation and ecological integration determine biocontrol efficacy.
- Effective strains promoted balanced, metabolically rich microbial communities, unlike less compatible strains.
Conclusions:
- Bacillus amyloliquefaciens csuftcsp75 is a promising endophytic bacterium for sustainable forest disease management.
- Optimizing biocontrol requires matching microbial inoculants with local soil environments for functional outcomes.
- This study supports the development of ecologically coherent biocontrol strategies for forest ecosystems.
Related Concept Videos
01:30Environmental Applications of Microorganisms
260
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...
260
02:11The Roles of Bacteria and Fungi in Plant Nutrition
41.1K
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.
41.1K
00:46Bioremediation
20.1K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
20.1K
01:28Microbial Nutrition
304
Organisms exhibit remarkable metabolic diversity, categorized based on how they acquire energy and carbon. These strategies enable survival in various ecological niches and are essential for maintaining energy flow and nutrient cycling within ecosystems.Energy and Carbon SourcesOrganisms are classified as phototrophs or chemotrophs based on energy acquisition. Phototrophs use light as their energy source, while chemotrophs rely on oxidizing chemical compounds. Further differentiation arises...
304
01:18Amino Acid Catabolism
197
Microorganisms rely on proteins as an essential carbon and energy source, particularly in environments with limited polysaccharides or lipids. However, proteins are too large to cross the plasma membrane unaided, necessitating enzymatic degradation. Microbes secrete extracellular proteases and peptidases that hydrolyze proteins into peptides, which can then be transported across the membrane. Once inside the cell, intracellular proteases degrade these peptides into free amino acids, which...
197
01:27Microorganisms in Agriculture and Food industry
394
Microorganisms play a crucial role in agriculture and the food industry, contributing to soil fertility, crop protection, and food production. Their functions range from nitrogen fixation and biopesticide production to fermentation and food preservation, making them indispensable to sustainable farming and food safety.Role in AgricultureNitrogen-fixing bacteria, such as Rhizobium (symbiotic) and Azotobacter (free-living), convert atmospheric nitrogen into ammonia through biological nitrogen...
394