Fester Thomas
Helmholtz-Center for Environmental Research - UFZ, Permoser Straße 15, D-04318 Leipzig, Germany.
Phytochemistry. 2015 Feb;110:6-12. doi: 10.1016/j.phytochem.2014.12.015. Epub 2015 Jan 3.
In spite of some inherent challenges, metabolite profiling is becoming increasingly popular under field conditions. It has been used successfully to address topics like species interactions, connections between growth and chemical stoichiometry or the plant's stress response. Stress exerts a particularly clear impact on plant metabolomes and has become a central topic in many metabolite profiling experiments in the fields. In contrast to phytochambers, however, external stress is often at least partially absorbed by the environment when measuring under field conditions. Such stress-buffering capacities of (agro)-ecosystems are of crucial interest given the ever-increasing anthropogenic impact on ecosystems and this review promotes the idea of using plant metabolite profiles for respective measurements. More specifically I propose to use parameters of the response of key plant species to a given stress treatment as proxies for measuring and comparing stress-buffering capacities of ecosystems. Stress response parameters accessible by metabolite profiling comprise for example the intensity or duration of the impact of stress or the ability of the plant organism to recover from this impact after a given time. Analyses of ecosystem stress-buffering capacities may improve our understanding of how ecosystems cope with stress and may improve our abilities to predict ecosystem changes.
尽管存在一些固有挑战，但代谢物谱分析在田间条件下正变得越来越流行。它已成功用于解决物种相互作用、生长与化学计量之间的联系或植物应激反应等主题。应激对植物代谢组产生了特别明显的影响，并且已成为许多田间代谢物谱分析实验的核心主题。然而，与植物生长箱不同，在田间条件下进行测量时，外部应激通常至少会部分被环境吸收。鉴于人为对生态系统的影响不断增加，（农业）生态系统的这种应激缓冲能力至关重要，本综述提出了利用植物代谢物谱进行相应测量的想法。更具体地说，我建议使用关键植物物种对给定应激处理的响应参数作为衡量和比较生态系统应激缓冲能力的指标。通过代谢物谱分析可获得的应激反应参数包括例如应激影响的强度或持续时间，或植物有机体在给定时间后从这种影响中恢复的能力。对生态系统应激缓冲能力的分析可能会增进我们对生态系统如何应对应激以及预测生态系统变化能力的理解。
