瑞佐MAP:一个全面的,非破坏性的,敏感的平台,用于根球的代谢成像
Dušan Veličković1, Tanya Winkler2, Vimal Balasubramanian2
1Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA. dusan.velickovic@pnnl.gov.
Plant methods
|August 2, 2024
概括
赖子MAP能够在根球中进行非破坏性,非向的代谢物成像. 这种新方法揭示了500多个分子的空间分布,有助于理解植物微生物相互作用和土壤生物地质化学.
科学领域:
- 植物科学 植物科学
- 土壤科学 土壤科学
- 分析化学 分析化学
背景情况:
- 了解树根球的生态化学过程需要了解生物分子组成和空间组织.
- 由于样本准备困难,评估根土界面的细代谢物分布具有挑战性.
- 现有的方法在分析过程中难以保持空间完整性和分子含量.
研究的目的:
- 开发一种用于空间分析根球分子的新方法.
- 为了克服对代谢物分析的样本准备方面的局限性.
- 为了可视化在根-土壤接口内广泛的分子分布.
主要方法:
- 开发了RhizoMAP,一种使用印制聚合物膜进行代谢物印制的技术.
- 使用矩阵辅助激光脱/电离 (MALDI) 质谱成像 (MSI) 进行空间分析.
- 优化了使用双膜 (聚,聚碳酸) 和各种MALDI制剂的方法.
主要成果:
- 成功地分析了树根球中的500多个分子,包括植物激素,氨基酸,糖和代谢物.
- 观察到分子的多样空间分布,与根迹,扩散,土壤颗粒和热点相关.
- 证明了RhizoMAP能够定位分子起源和转变的能力,并在20厘米根球深度的图像代谢物.
结论:
- 赖子MAP提供了根球的非破坏性,非向性和敏感的代谢物成像.
- 该方法捕获与根相关的分子,排泄物和土壤有机物分布.
- 在受控的本土土环境中得到验证,证明了它对研究根土相互作用的有用性.
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