[1872] - Imaging and functional characterization of crop root systems using spectroscopic electrical impedance measurements

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Citation
Weigand, M., Kemna, A., 2019. Imaging and functional characterization of crop root systems using spectroscopic electrical impedance measurements. Plant Soil, 435 (1-2), 201 - 224. DOI: 10.1007/s11104-018-3867-3.
Identification
Title(s):Main Title: Imaging and functional characterization of crop root systems using spectroscopic electrical impedance measurements
Description(s):Abstract: Background and aims Non- or minimally invasive methods are urgently needed to characterize and moni- tor crop root systems to foster progress in phenotyping and general system understanding. Electrical methods have come into focus due to their unique sensitivity to various structural and functional root characteristics. The aim of this study is to highlight imaging capabili- ties of these methods with regard to crop root systems and to investigate changes in electrical signals caused by physiological reactions. Methods Spectral electrical impedance tomography (sEIT) and electrical impedance spectroscopy (EIS) were used in three laboratory experiments to char- acterize oilseed root systems embedded in nutrient solution. Two experiments imaged the root exten- sion with sEIT, including one experiment monitoring a nutrient stress situation. In the third experiment electrical signatures were observed over the diurnal cycle using EIS. Results Root system extension was imaged using sEIT under static conditions. During continuous nutrient deprivation, electrical polarization signals decreased steadily. Systematic changes were observed over the diurnal cycle, indicating further sensitivity to asso- ciated physiological processes. Spectral parameters suggest polarization processes at the μm scale. Conclusions Electrical imaging methods are able to non-invasively characterize crop root systems in con- trolled laboratory conditions, thereby offering links to root structure and function. The methods have the potential to be upscaled to the field scale.
Identifier(s):DOI: 10.1007/s11104-018-3867-3
Relation(s):Has Part: URL: https://link.springer.com/article/10.1007%2Fs11104-018-3867-3
Responsible Party
Creator(s):Author: Maximilian Weigand
Author: Andreas Kemna
Publisher:Springer International Publishing
Topic
TR32 Topic:Other
Related Sub-project(s):B6
Subject(s):CRC/TR32 Keywords: Geophysics, EIT, Root
File Details
File Name:Weigand_Kemna_2019_PS.pdf
Data Type:Text
File Size:4676 kB (4.566 MB)
Date(s):Date Accepted: 2018-10-31
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
Constraints
Download Permission:OnlyTR32
General Access and Use Conditions:According to the TR32DB data policy agreement.
Access Limitations:According to the TR32DB data policy agreement.
Licence:TR32DB Data policy agreement
Geographic
North:-no map data
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Measurement Region:None
Measurement Location:--None--
Specific Informations - Publication
Status:Published
Review:PeerReview
Year:2019
Type:Article
Article Type:Journal
Source:Plant Soil
Issue:1-2
Volume:435
Page Range:201 - 224
Metadata Details
Metadata Creator:Shari van Treeck
Metadata Created:2019-03-12
Metadata Last Updated:2019-03-12
Subproject:B6
Funding Phase:3
Metadata Language:English
Metadata Version:V43
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