在植物根微生物群中的共生足迹
Kyle Hartman1, Marc W Schmid2, Natacha Bodenhausen1,3
1Department of Agroecology and Environment, Plant Soil Interactions, Reckenholzstrasse 191, Agroscope, Zürich, 8046, Switzerland.
Environmental microbiome
|July 31, 2023
概括
植物根共生体,如树状菌根真菌 (AMF) 和树枝菌,显著塑造根微生物组结构. 这项研究表明,这些有益微生物的存在或不存在是确定根微生物社区组成的关键驱动因素.
科学领域:
- 植物科学 植物科学
- 微生物组研究的研究.
- 生态生态学 生态生态学
背景情况:
- 了解植物相关微生物群落的驱动因素至关重要.
- 虽然土壤和宿主身份是已知的驱动因素,但根交生体的作用仍然不清楚.
- 树状菌根真菌 (AMF) 和树根真菌是关键的有益的根共生体.
研究的目的:
- 为了调查AMF和根茎菌的存在或不存在是否影响根微生物组组成.
- 为了测试共生体类型定义根微生物组结构的假设.
主要方法:
- 种植了17种具有不同协生关系的植物物种 (没有,只有AMF,只有根茎,两者).
- 利用细菌和真菌的amplicon测序来分析根微生物组.
- 描述微生物群落的多样性和组成.
主要成果:
- 植物系谱和物种身份是主要的驱动因素,但共生体类型也是一个重要因素.
- 基于AMF和根茎菌的存在,观察到一致的细菌类响应 (酸性细菌,克拉米迪亚,菲尔米库特,Verrucomicrobia).
- 识别了特定的细菌和真菌操作分类单元 (OTU),在不同的共生群体中丰富,表明"共生型".
结论:
- 宿主植物的共生协会在根微生物组上留下了明显的印记,称为"共生型".
- 这些发现表明,根微生物组的基本组装原理是由宿主植物共生体驱动的.
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