干旱的微生物记忆重塑了与根相关的社区,以增强植物的弹性
Hongyin Qi1, Xin Wen1, Ziyue Wang1
1School of Grassland Science, Beijing Forestry University, Beijing, China.
Plant, cell & environment
|September 24, 2025
概括
中华虫通过招募特定的根球微生物来增强干旱适应能力. 植物根周围的土壤中的微生物群落显示出植物根.
科学领域:
- 生态生态学 生态生态学
- 微生物学 微生物学
- 气候变化研究 气候变化研究
背景情况:
- 全球气候变化加剧干旱,威胁草原生态系统.
- 中国北部占主导地位的青草 (Leymus chinensis) 表现出抗干旱能力,但其与根球微生物的相互作用是未知的.
- 了解这些相互作用对于草原的弹性至关重要.
研究的目的:
- 研究短期干旱周期如何影响树根圈和土壤微生物群落.
- 为了确定这些微生物群落对莱姆斯虫 (Leymus chinensis) 抗旱能力的调节作用.
- 探索微生物介导的"压力记忆"效应.
主要方法:
- 模拟Leymus chinensis的短期干旱周期 (0-3年).
- 采用高通量测序来分析树根圈和土壤中的微生物群落.
- 进行微生物移植实验以评估功能影响.
主要成果:
- 在干旱期间,根球微生物网络的连接性显著下降,与散土不同,这表明了利基适应.
- 真菌群落迅速应对干旱,而细菌种群则表现出延迟但特定的招募,这表明时间协同作用.
- 移植干旱压力的树根球土壤改善了中国的生理干旱抵抗力,证实了微生物的"压力记忆".
结论:
- 中华虫积极招募特定的根球微生物来增强干旱适应能力.
- 树枝球微生物群落在调解植物抗旱能力和"压力记忆"方面发挥着关键作用.
- 研究结果提供了对草原生态弹性和恢复策略的见解.
相关概念视频
Responses to Drought and Flooding
11.9K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
11.9K
Adaptations that Reduce Water Loss
27.9K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
27.9K
The Roles of Bacteria and Fungi in Plant Nutrition
46.7K
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.
46.7K
Factors Influencing Microbial Growth: Osmolarity
746
Osmolarity is the measure of solute concentration in a solution. It plays a critical role in determining water availability for organisms. Water moves across semipermeable membranes through osmosis, flowing from regions of lower solute concentration (more dilute) to regions of higher solute concentration (more concentrated).In high-solute environments, microbial cells lose water, leading to dehydration and inhibited growth. The extent to which water is available to microbes in such environments...
746
Responses to Heat and Cold Stress
14.7K
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.
14.7K
Responses to Salt Stress
14.5K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
14.5K


