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Studying root-environment interactions in structured microdevices
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DOI：10.1093/jxb/erad122.png)
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摘要
En 中文
When interacting with the environment, plant roots integrate sensory information over space and time in order to respond appropriately under non-uniform conditions. The complexity and dynamic properties of soil across spatial and temporal scales pose a significant technical challenge for research into the mechanisms that drive metabolism, growth, and development in roots, as well as on inter-organismal networks in the rhizosphere. Synthetic environments, combining microscopic access and manipulation capabilities with soil-like heterogeneity, are needed to elucidate the intriguing antagonism that characterizes subsurface ecosystems. Microdevices have provided opportunities for innovative approaches to observe, analyse, and manipulate plant roots and advanced our understanding of their development, physiology, and interactions with the environment. Initially conceived as perfusion platforms for root cultivation under hydroponic conditions, microdevice design has, in recent years, increasingly shifted to better reflect the complex growth conditions in soil. Heterogeneous micro-environments have been created through co-cultivation with microbes, laminar flow-based local stimulation, and physical obstacles and constraints. As such, structured microdevices provide an experimental entry point into the complex network behaviour of soil communities. How plant roots cope with the soil complexity and integrate heterogeneous conditions into development, defence, and metabolism remains unclear. Structured microfluidic devices now enable controlled generation of complex microenvironments for microscopy-based root studies.
Keyword:
Biosensors
complex conditions
3D printing
lab-on-a-chip
live imaging
microfluidics
root-microbe interactions
synthetic environments
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