Abstract
The climate warming implies an increase of stress of plants (drought and torrential rainfall). The understanding of plant behavior, in this context, takes a major importance and sap flow measurement in plants remains a key issue for plant understanding. Magnetic Resonance Imaging (MRI) which is well known to be a powerful tool to access water quantity can be used to measure moving water. We describe a novel flow-MRI method which takes advantage of inflow slice sensitivity. The method involves the slice selectivity in the context of multi slice spin echo sequence. Two sequences such as a given slice is consecutively inflow and outflow sensitive are performed, offering the possiblility to perform slow flow sensitive imaging in a quite straigthforward way. The method potential is demonstrated by imaging both a slow flow measurement on a test bench (as low as 10 μm.s−1) and the Poiseuille’s profile of xylemian sap flow velocity in the xylematic tissues of a tomato plant stem.
Highlights
The climate warming implies an increase of stress of plants
The understanding of plant behavior, in this context, takes a major importance and flow measurement in plants and trees remains a major issue [1]. This problem could naturally be adressed to Magnetic Resonance Imaging which is well known to be a powerful tool to access water quantity and flow of liquids
The sap flow measurement, is performed by means of the pulse field gradient (PFG) method [4] which belongs to the phase-encoding technique
Summary
The climate warming implies an increase of stress of plants (drought and torrential rainfall). The understanding of plant behavior, in this context, takes a major importance and flow measurement in plants and trees remains a major issue [1]. This problem could naturally be adressed to Magnetic Resonance Imaging which is well known to be a powerful tool to access water quantity and flow of liquids. Flow-MRI techniques are widely used in clinic for flow blood imaging This field of application, known as MR angiography, concerns rapidly moving flow The sap flow measurement, is performed by means of the pulse field gradient (PFG) method [4] which belongs to the phase-encoding technique.
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