Electrical impedance measurement on plants: a review with some insights to other fields

Jócsák, Ildikó; Végvári, György; Vozáry, Eszter

doi:10.1007/s40626-019-00152-y

Cited by 64 publications

(58 citation statements)

References 92 publications

(138 reference statements)

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“…The strength of the electrical double layer (EDL) polarizability depends on the composition and concentration of ions in the extracellular fluid (ECF) and electric potential distribution at the cell membrane (Kinraide, 2001;Kinraide & Wang, 2010;Wang et al, 2011). ICF, intracellular fluids application of electrical impedance spectroscopy (EIS) to study various parts of plants (e.g., fruits, vegetables, and leaf water; Jocsac, Vegvari, & Vozary, 2019). To the best of our knowledge, this review is the first attempt to provide a comprehensive overview of all the active electrical methods (based on electric excitation) for root studies that are used by different research communities at various spatial scales.…”

Section: Core Ideasmentioning

confidence: 99%

Sensing the electrical properties of roots: A review

Ehosioke

Nguyen

Rao

et al. 2020

Vadose Zone Journal

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Thorough knowledge of root system functioning is essential to understand the feedback loops between plants, soil, and climate. In situ characterization of root systems is challenging due to the inaccessibility of roots and the complexity of root zone processes. Electrical methods have been proposed to overcome these difficulties. Electrical conduction and polarization occur in and around roots, but the mechanisms are not yet fully understood. We review the potential and limitations of low‐frequency electrical techniques for root zone investigation, discuss the mechanisms behind electrical conduction and polarization in the soil–root continuum, and address knowledge gaps. A range of electrical methods for root investigation is available. Reported methods using current injection in the plant stem to assess the extension of the root system lack robustness. Multi‐electrode measurements are increasingly used to quantify root zone processes through soil moisture changes. They often neglect the influence of root biomass on the electrical signal, probably because it is yet to be well understood. Recent research highlights the potential of frequency‐dependent impedance measurements. These methods target both surface and volumetric properties by activating and quantifying polarization mechanisms occurring at the root segment and cell scale at specific frequencies. The spectroscopic approach opens up a range of applications. Nevertheless, understanding electrical signatures at the field scale requires significant understanding of small‐scale polarization and conduction mechanisms. Improved mechanistic soil–root electrical models, validated with small‐scale electrical measurements on root systems, are necessary to make further progress in ramping up the precision and accuracy of multi‐electrode tomographic techniques for root zone investigation.

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Section: Core Ideasmentioning

confidence: 99%

Sensing the electrical properties of roots: A review

Ehosioke

Nguyen

Rao

et al. 2020

Vadose Zone Journal

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“…Cadmium is one of the most harmful non-essential heavy metals that, regardless of its quantity, affects plants in a detrimental way by triggering severe disorders in plant functionality and structure [ 15 ]. In plant stress physiology, there is an increasing need for stress detection technologies with the help of which the physiological state of plants can be characterised with particular attention to non-invasiveness [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of cadmium stress on certain physiological parameters, antioxidative enzyme activities and biophoton emission of leaves in barley (Hordeum vulgare L.) seedlings

Jócsák

Malgwi

Rabnecz³

et al. 2020

PLoS ONE

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Biophoton emission is a well-known phenomenon in living organisms, including plant species; however, the underlying mechanisms are not yet well elucidated. Nevertheless, non-invasive stress detection is of high importance when in plant production and plant research. Therefore, the aim of our work was to investigate, whether biophoton emission is suitable for the detection of cadmium stress in the early phase of stress evolution and to identify certain stress-related events that occur rapidly upon cadmium exposure of barley seedlings parallel to biophoton emission measurements. Changes of biophoton emission, chlorophyll content estimation index, ascorbate level, the activity of ascorbate- and guaiacol peroxidase enzymes and lipid oxidation were measured during seven days of cadmium treatment in barley ( Hordeum vulgare L .) seedlings. The results indicate that the antioxidant enzyme system responded the most rapidly to the stress caused by cadmium and the lipid oxidation-related emission of photons was detected in cadmium-treated samples as early as one day after cadmium exposure. Furthermore, a concentration-dependent increase in biophoton emission signals indicating an increased rate of antioxidative enzymes and lipid oxidation was also possible to determine. Our work shows evidence that biophoton emission is suitable to identify the initial phase of cadmium stress effectively and non-invasively.

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“…In this framework, electrochemical impedance spectroscopy (EIS) sensors [ 43 ] are also valuable for plant and crop sciences, e.g., for the detection of plant viruses or pathogens [ 44 ]. Beyond being simple and sensitive, EIS is an advantageous technique for on-field analysis because of its ability to provide fast responses without destroying the sample and the availability of portable readers able to monitor changes in the device impedance upon the specific recognition of the target analytes.…”

Section: Innovative Technologies For Plant Pathologymentioning

confidence: 99%

Advances in Plant Disease Detection and Monitoring: From Traditional Assays to In-Field Diagnostics

Buja

Sabella

Monteduro

et al. 2021

Sensors

118

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Human activities significantly contribute to worldwide spread of phytopathological adversities. Pathogen-related food losses are today responsible for a reduction in quantity and quality of yield and decrease value and financial returns. As a result, “early detection” in combination with “fast, accurate, and cheap” diagnostics have also become the new mantra in plant pathology, especially for emerging diseases or challenging pathogens that spread thanks to asymptomatic individuals with subtle initial symptoms but are then difficult to face. Furthermore, in a globalized market sensitive to epidemics, innovative tools suitable for field-use represent the new frontier with respect to diagnostic laboratories, ensuring that the instruments and techniques used are suitable for the operational contexts. In this framework, portable systems and interconnection with Internet of Things (IoT) play a pivotal role. Here we review innovative diagnostic methods based on nanotechnologies and new perspectives concerning information and communication technology (ICT) in agriculture, resulting in an improvement in agricultural and rural development and in the ability to revolutionize the concept of “preventive actions”, making the difference in fighting against phytopathogens, all over the world.

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Electrical impedance measurement on plants: a review with some insights to other fields

Cited by 64 publications

References 92 publications

Sensing the electrical properties of roots: A review

Sensing the electrical properties of roots: A review

Effect of cadmium stress on certain physiological parameters, antioxidative enzyme activities and biophoton emission of leaves in barley (Hordeum vulgare L.) seedlings

Advances in Plant Disease Detection and Monitoring: From Traditional Assays to In-Field Diagnostics

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