Experimental platforms for the investigation of spatiotemporal patterns in the rhizosphere-laboratory and field scale
Experimental platforms for the investigation of spatiotemporal patterns in the rhizosphere-laboratory and field scale
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DOI：
10.1002/jpln.202000079
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发表时间：
2020-08-09
影响因子：
2.5
通讯作者：
Schlueter, Steffen
中科院分区：
文献类型：
--
作者：
Vetterlein, Doris;Lippold, Eva;Schlueter, Steffen
根系、微生物、土壤化学和物理性质以及环境变量之间的众多反馈回路导致了在时间上高度动态的空间参数模式。为了提高我们对相关根际过程及其在土壤-植物系统尺度上的相关性的理解，需要实验平台。这些平台应能够：（1）将小规模观测（纳米至分米）与系统行为联系起来;（2）在同一实验中整合物理、化学和生物取样方法;（3）在所涉系统生命周期的不同时间点取样。在这里，我们描述了什么要求必须得到满足，并在多大程度上这已经实现了在实践中的实验平台，这是建立在DFG优先计划2089年的框架内“根际时空组织的关键根际功能”。讨论了在何种程度上可以考虑到理论因素，特别是在跨比额表比较方面，从实验室到现场规模。后一个规模是最重要的，以克服生命周期覆盖的分数和避免不切实际的根长密度之间的权衡。
The numerous feedback loops between roots, microorganisms, soil chemical and physical properties, and environmental variables result in spatial parameter patterns which are highly dynamic in time. In order to improve our understanding of the related rhizosphere processes and their relevance at the soil-plant system scale, experimental platforms are required. Those platforms should enable (1) to relate small scale observations (nm to dm) to system behaviour, (2) the integration of physical, chemical and biological sampling approaches within the same experiment, and (3) sampling at different time points during the life cycle of the system in question. Here we describe what requirements have to be met and to what extent this has been achieved in practice by the experimental platforms which were set up within the framework of DFG priority programme 2089 "Rhizosphere Spatiotemporal Organisation-a key to rhizosphere functions". It is discussed to what extent theoretical considerations could be accommodated, in particular for the comparison across scales,i.e., from laboratory to field scale. The latter scale is of utmost importance to overcome the trade-off between fraction of life cycle covered and the avoidance of unrealistic root length densities.