环境驱动因素在草-内生植物共生中覆盖宿主类
Yue-Yang Zhang1, Tong-Tong Wang1, Yan-Zhong Li1
1State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China.
Journal of fungi (Basel, Switzerland)
|February 26, 2026
概括
环境因素,而不是宿主遗传,驱动着虫-内生植物共生. 低温和干旱压力影响这种关系和植物防御,影响未来的内植物应用.
科学领域:
- 植物与微生物的相互作用
- 这种共生是共生.
- 果实植物生态学 果实植物生态学
背景情况:
- 植物内细胞,或"第二个基因组",显著影响宿主适应能力.
- 由于微生物特征,宿主物种和环境影响,理解植物内菌共生是复杂的.
- 虫-内生植物与*Alternaria*种群的共生. *Undifilum*是研究这些相互作用的模型,因为内细胞产生神经毒素swainsonine.
研究的目的:
- 为了研究环境因素与宿主进化历史对虫虫-内生菌共生的分布和功能的影响程度.
- 了解管理植物内植物关系的生态原则.
- 在不断变化的环境中建立预测和利用内生植物资源的基础.
主要方法:
- 在中国的野草息地 (2021-2023) 进行了全国调查.
- 采用了实地采样,培养,分子,定量和建模方法.
- 调查了32种 *Oxytropis*, *Astragalus* 和 *Sphaerophysa* 的 *Alternaria* 种类. *不完全*的殖民化.
主要成果:
- *另类* 部门. 在32种被调查的植物物种中,Undifilum殖民了11种.
- 内生植物负载在0.02至58.87ppg/ng总DNA之间,而斯瓦因素度在殖民植物中从0.00003%至1.00%不等.
- 环境因素,特别是低温和干旱压力,被确定为共生分布和表达的主要驱动因素,影响化学防御和放牧压力,而不是宿主分化.
结论:
- 环境是主导的力量,塑造了地理模式和在生态尺度上表达虫-内生体共生的功能表达.
- 环境条件直接和间接地调节了共生关系和化学防御机制.
- 这些发现为植物内植物共生原理提供了新的见解,并支持在环境变化中战略利用内植物资源.
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