根球微生物群的酶活性,结构和生长策略的变化受到温度升高和CO2的影响
Bin Song1, Yansheng Li2, Zhenhua Yu2
1School of Geography and Ocean Science, Nanjing University, Nanjing 210008, China; State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 138 Haping Road, Harbin 150081, China; College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang 110866, China.
The Science of the total environment
|September 26, 2024
概括
全球变暖和二氧化碳的增加显著改变了大豆根球中的土壤酶活性和微生物群落. 综合效应放大营养动员,影响气候变化下的植物生长.
科学领域:
- 环境微生物学 环境微生物学
- 植物土壤科学 植物土壤科学
- 气候变化 生态学 生态学
背景情况:
- 全球变暖和二氧化碳的增加影响了土壤过程和作物生长.
- 球土壤酶对于营养调动至关重要,主要是微生物产物.
- 了解微生物社区对气候变化因素的反应对于营养获取至关重要.
研究的目的:
- 研究高温 (ET) 和高二氧化碳 (eCO2) 单独和组合对大豆根球酶活性和微生物群落的影响.
- 确定这些气候变化因素如何影响微生物生长战略和营养动员.
主要方法:
- 大豆植物在环境,ET,eCO2和eCO2+ET组合条件下在根茎盒中生长.
- 用土壤树脂图分析了酶活性和热点区域.
- 评估了微生物群落的组成和r-和K-战略家的相对丰度.
主要成果:
- eCO2增加了酶活性 (2.58.7%),而ET扩大了热点区域 (1.83.3%).
- 结合的eCO2 + ET显著放大了热点区域 (5.310.1%) 和酶活性 (35.467.3%).
- 在不同的治疗下,观察到微生物群落 (细菌和真菌) 和生长策略 (r- vs. K-战略家) 的明显变化.
结论:
- 升高的温度和二氧化碳,特别是结合起来,显著改变了树根球酶活性和微生物群落结构.
- 酶热点和微生物组成的变化反映了气候变化下的微生物生长策略和营养动员的改变.
- 研究结果提供了关于全球变化因素对土壤生态系统和植物营养物质获取的复杂相互作用的见解.
相关概念视频
The 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
Responses to Heat and Cold Stress
13.4K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.4K
C4 Pathway and CAM
45.3K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...
45.3K
Bioremediation
18.2K
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.
18.2K


