在根系球和系球之间保护有益的微生物
Qing Zheng1, Yuntao Hu1, Suzanne M Kosina1
1Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
The New phytologist
|September 5, 2023
概括
土壤生物含有促进植物生长的微生物. 研究人员从生物中确定了增强模型草和蓝藻细菌生长的特定细菌,发现了植物生物质的关键代谢物.
科学领域:
- 微生物学 微生物学
- 植物科学 植物科学
- 生态生态学 生态生态学
背景情况:
- 生物是由光营养素驱动的土壤表面社区,主要是蓝藻细菌.
- 生物中的光自营养物被认为可以与相关细菌交换碳以获取营养.
- 在层和根层环境中的有益微生物与宿主相互作用需要进行比较.
研究的目的:
- 比较土壤生物地中的有益相互作用. 层和根层.
- 识别促进植物和蓝菌宿主的生长的微生物菌株.
- 从生物地社区中发现新的促进植物生长的代谢物.
主要方法:
- 对16S rRNA基因测序数据集的回顾性分析.
- 宿主微生物共同培养实验使用生物社区/隔离物和模型草 (Brachypodium distachyon) 或菌 (Microcoleus vaginatus).
- 代谢分析以确定关键化合物.
主要成果:
- 阳光圈微生物族群是树脂圈族群的一个子集;树脂圈包含独特的族群.
- 生物的微生物显著促进了模型草的生长.
- 三种生物地分离物表明,草和蓝菌宿主都显著促进了生长.
- 伪菌sp._L1D14从草的排泄物中产生泛酸,使草生物质增加了60%以上.
结论:
- 生物作为促进植物生长的微生物的储存库.
- 多种光自营性宿主,包括蓝藻细菌,可以产生促进植物生长的新型微生物和代谢物.
- 潘托酸是确定增强植物生物质的关键代谢物.
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