Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A nematode and fungus team up to damage soybean

18.06.2014

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/


Canopy view of diseased and healthy soybean leaves.

Photo: A.Westphal/Julius-Kühn-Institute


Microplots at the time of rating showing differences in canopy health.

Photo: A.Westphal/Julius-Kühn-Institute

journal.pone.0099529.

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.

... more about:
»Fusarium »JKI »Kühn-Institut »Plant »damage »death »fungi »nematode »soybean

“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.

Author:
Dr. Andreas Westphal
Julius Kühn-Institut (JKI), Federal Research Centre for Cultivated Plants
Institute for Plant Protection in Field Crops and Grassland
Messeweg 11-12
D-38104 Braunschweig
Germany
E-Mail: andreas.westphal@jki.bund.de

Stefanie Hahn | idw - Informationsdienst Wissenschaft
Further information:
http://www.jki.bund.de

Further reports about: Fusarium JKI Kühn-Institut Plant damage death fungi nematode soybean

More articles from Agricultural and Forestry Science:

nachricht How algae could save plants from themselves
11.05.2016 | Carnegie Institution for Science

nachricht Biofeedback system designed to control photosynthetic lighting
10.05.2016 | American Society for Horticultural Science

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Worldwide Success of Tyrolean Wastewater Treatment Technology

A biological and energy-efficient process, developed and patented by the University of Innsbruck, converts nitrogen compounds in wastewater treatment facilities into harmless atmospheric nitrogen gas. This innovative technology is now being refined and marketed jointly with the United States’ DC Water and Sewer Authority (DC Water). The largest DEMON®-system in a wastewater treatment plant is currently being built in Washington, DC.

The DEMON®-system was developed and patented by the University of Innsbruck 11 years ago. Today this successful technology has been implemented in about 70...

Im Focus: Computational high-throughput screening finds hard magnets containing less rare earth elements

Permanent magnets are very important for technologies of the future like electromobility and renewable energy, and rare earth elements (REE) are necessary for their manufacture. The Fraunhofer Institute for Mechanics of Materials IWM in Freiburg, Germany, has now succeeded in identifying promising approaches and materials for new permanent magnets through use of an in-house simulation process based on high-throughput screening (HTS). The team was able to improve magnetic properties this way and at the same time replaced REE with elements that are less expensive and readily available. The results were published in the online technical journal “Scientific Reports”.

The starting point for IWM researchers Wolfgang Körner, Georg Krugel, and Christian Elsässer was a neodymium-iron-nitrogen compound based on a type of...

Im Focus: Atomic precision: technologies for the next-but-one generation of microchips

In the Beyond EUV project, the Fraunhofer Institutes for Laser Technology ILT in Aachen and for Applied Optics and Precision Engineering IOF in Jena are developing key technologies for the manufacture of a new generation of microchips using EUV radiation at a wavelength of 6.7 nm. The resulting structures are barely thicker than single atoms, and they make it possible to produce extremely integrated circuits for such items as wearables or mind-controlled prosthetic limbs.

In 1965 Gordon Moore formulated the law that came to be named after him, which states that the complexity of integrated circuits doubles every one to two...

Im Focus: Researchers demonstrate size quantization of Dirac fermions in graphene

Characterization of high-quality material reveals important details relevant to next generation nanoelectronic devices

Quantum mechanics is the field of physics governing the behavior of things on atomic scales, where things work very differently from our everyday world.

Im Focus: Graphene: A quantum of current

When current comes in discrete packages: Viennese scientists unravel the quantum properties of the carbon material graphene

In 2010 the Nobel Prize in physics was awarded for the discovery of the exceptional material graphene, which consists of a single layer of carbon atoms...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Networking 4.0: International Laser Technology Congress AKL’16 Shows New Ways of Cooperations

24.05.2016 | Event News

Challenges of rural labor markets

20.05.2016 | Event News

International expert meeting “Health Business Connect” in France

19.05.2016 | Event News

 
Latest News

11 million Euros for research into magnetic field sensors for medical diagnostics

27.05.2016 | Awards Funding

Fungi – a promising source of chemical diversity

27.05.2016 | Life Sciences

New Model of T Cell Activation

27.05.2016 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>