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University of Graz

4 ARTICLES PUBLISHED IN JoVE

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Immunology and Infection

Microwave Assisted Rapid Diagnosis of Plant Virus Diseases by Transmission Electron Microscopy
Bernd Zechmann 1,2, Gerhard Graggaber 1, Günther Zellnig 1
1Institute of Plant Sciences, University of Graz, 2Institute for Electron Microscopy and Fine Structure Research, Graz University of Technology

This study describes a method that allows the rapid and clear diagnosis of plant virus diseases in about half a day by using a combination of microwave assisted plant sample preparation for transmission electron microscopy and negative staining methods.

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Engineering

Robotic Sensing and Stimuli Provision for Guided Plant Growth
Mostafa Wahby 1, Mary Katherine Heinrich 1,5, Daniel Nicolas Hofstadler 2, Julian Petzold 1, Igor Kuksin 3, Payam Zahadat 2,4, Thomas Schmickl 2, Phil Ayres 5, Heiko Hamann 1
1Institute of Computer Engineering, University of Lübeck, 2Institute of Biology, Artificial Life Lab, University of Graz, 3Cybertronica UG, 4Department of Computer Science, IT University of Copenhagen, 5Centre for IT and Architecture, Royal Danish Academy

Distributed robot nodes provide sequences of blue light stimuli to steer the growth trajectories of climbing plants. By activating natural phototropism, the robots guide the plants through binary left-right decisions, growing them into predefined patterns that by contrast are not possible when the robots are dormant.

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JoVE Journal

Manufacturing Simple and Inexpensive Soil Surface Temperature and Gravimetric Water Content Sensors
Armin Howell 1, Colin Tucker 1, Edmund E. Grote 1, Maik Veste 2,3, Jayne Belnap 1, Gerhard Kast 4, Bettina Weber 5,6, Sasha C. Reed 1
1Southwest Biological Science Center, U.S. Geological Survey, 2Centre for Energy Technology Brandenburg, 3Institute of Environmental Sciences, Brandenburg University of Technology Cottbus-Senftenberg, 4Umweltanalytische Produkte GmbH, 5Institute of Plant Sciences, University of Graz, 6Multiphase Chemistry Department, Max Planck Institute for Chemistry

Accurately measuring temperature and water content of the upper 5 mm of the soil surface can improve our understanding of environmental controls on biological, chemical, and physical processes. Here we describe a protocol for manufacturing, calibrating, and conducting measurements with soil surface temperature and moisture sensors.

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Chemistry

A Package of Established Analytical Tools to Investigate the Solid-State Alteration of Lipid-Based Excipients
Sharareh Salar-Behzadi 1,2, Carolina Corzo 1, Peter Laggner 1
1Research Center Pharmaceutical Engineering, GmbH, 2Institute of Pharmaceutical Sciences, Department of Pharmaceutical Technology and Biopharmacy, University of Graz

This publication shows the application of x-ray diffraction and differential scanning calorimetry as gold standards for investigating the solid-state of lipid-based excipients (LBEs). Understanding the solid-state alteration in LBEs and its effect on the performance of pharmaceutical products thereof is the key factor for manufacturing robust lipid-based dosage forms.

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