Together with an international consortium, scientist at the German Julius-Kühn-Institute publishes model of the damage potential of Sudden-Death-Syndrome in PlosOne
For years a disease complex of a plant-parasitic nematode and fungal pathogen has damaged soybean fields in the Midwest of the USA. Recently Dr. Andreas Westphal of the Julius-Kühn-Institute (JKI) and his American collaborator Dr. Lijuan Xing provided mathematical evidence for the synergistic nature of the interaction of Heterodera glycines and Fusarium virguliforme (Xing and Westphal, 2013, JPDP 120:209-217). Crop rotation offers no remedy against the teamed up pathogens. Now, the international author group quantified the specific role of the two pathogens in disease severity. This report was published on June 16th in the open-access journal PLOS ONE and is available online http://dx.plos.org/10.1371/
In collaboration with researchers from Australia, China and the US, microplot studies were conducted in Indiana. “The data were used to model the role of the fungal pathogen and the nematode quantitatively when causing the disease “, reports Westphal. This type of information enables us to predict the occurrence of sudden death syndrome and the severity of the disease.
“We gained insight how this important disease complex functions, while severely damaging the soybean-plants. In addition we developed new detection and quantification methods. These methods are critical for investigating and exploiting efficient management strategies of this still spreading disease“, summarizes Westphal.
Background information on the experiment design:
Tubes of 45-cm diameter were inserted perpendicular into the ground to provide the experimental context under field conditions. The plots were then infested with fungi and nematodes alone or in combination. Starting at the onset of disease, disease severity was monitored in the differently treated plots. The amount of the fungus at planting and in diseased plants was determined by a molecular quantification method called rtPCR using newly developed detection sets with specifically designed Primers.
The Australian collaborator conducted the extraction of DNA from large amounts of soil (500 g) using a method currently only available in his laboratory. The US group conducted the molecular detection of the fungus. Nematode population densities were determined by extracting and counting. A response matrix using the amounts of the pathogens as independents and the amount of disease as dependent were developed. In addition, such matrix was also used to describe the relation between the amounts of disease parameters and yield.
Dr. Andreas Westphal
Julius Kühn-Institut (JKI), Federal Research Centre for Cultivated Plants
Institute for Plant Protection in Field Crops and Grassland
Stefanie Hahn | idw - Informationsdienst Wissenschaft
Plasma-zapping process could yield trans fat-free soybean oil product
02.12.2016 | Purdue University
New findings about the deformed wing virus, a major factor in honey bee colony mortality
11.11.2016 | Veterinärmedizinische Universität Wien
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
19.01.2017 | Earth Sciences
19.01.2017 | Life Sciences
19.01.2017 | Physics and Astronomy