Navigation Links
DNA technique measures suitability of soil for onion crops

Nematodes, such as the stem nematode, and fungi, such as white rot, are particularly harmful for onion crops in the Netherlands: they cause rot. Soil samples are investigated to detect this; a labour-intensive and expensive operation. Together with the Laboratory for Nematology (University of Wageningen) the company Blgg has developed a molecular technique to detect the stem nematode and white rot in soil samples.

Agricultural laboratory Blgg will start using the new system in November 2005. The system quickly and accurately measures soil samples at the molecular level. In a series of comparative trials, the molecular test had a higher detection rate than the traditional microscopic investigation for both the stem nematode and onion white rot.

Each year thousands of soil samples are investigated for their suitability for onion crops. They are examined for the presence of the nematode Ditylenchus dipsaci (the stem nematode) and the fungus Sclerotium cepivorum (onion white rot). For years this has been done visually under the microscope; a specialised and labour-intensive process.

Blgg director Henri Hekman had been looking for a more accurate, faster and cheaper method for some time. He came into contact with Wageningen researcher Hans Helder who, with funding from Technology Foundation STW, was compiling a DNA database of all nematode species in the Netherlands. This database, together with a method for the easy extraction of DNA from nematodes, forms the basis for the technique developed to detect harmful nematodes. The Technology Foundation STW filed a patent for this technology, and this patent was recently transferred to Blgg.

In close cooperation with the Laboratory for Nematology, Blgg managed to successfully combine the fundamental knowledge from the patent with state-of-the-art laboratory practice. The result is a practical test that conclusively demonstrates the presence of both the stem nematode and onion white rot.

Both parties are continuing to work on the development of molecular tests to detect other plant pathogenic nematode species in the soil. With this new method, the analysis of soil samples under the microscope will be made superfluous. It will soon be possible to detect nematodes extracted from the soil samples according to their individual DNA 'barcode'. The grower can then decide whether or not he wants to grow onions on the plot of land tested.


'"/>

Source:Netherlands Organization for Scientific Research


Related biology news :

1. New lab technique identifies high levels of pathogens in therapy pool
2. Brain-mapping technique aids understanding of sleep, wakefulness
3. Study reveals new technique for fingerprinting environmental samples
4. Researchers pioneer new gene therapy technique using natural repair process
5. Newer imaging techniques may lead to over-treatment
6. Gene silencing technique offers new strategy for treating, curing disease
7. Mosaic mouse technique offers a powerful new tool to study diseases and genetics
8. Researchers devise new technique for creating human stem cells
9. New technique rapidly detects illness-causing bacteria
10. New bioinformatics technique for systematically analyzing key regions in DNA that help control gene activity
11. New technique may speed DNA analysis
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/5/2017)... KEY FINDINGS The global market for stem ... 25.76% during the forecast period of 2017-2025. The rise ... growth of the stem cell market. Download ... The global stem cell market is segmented on the ... cell market of the product is segmented into adult ...
(Date:3/30/2017)... NEW YORK , March 30, 2017 ... by type (physiological and behavioral), by technology (fingerprint, AFIS, ... recognition, voice recognition, and others), by end use industry ... travel and immigration, financial and banking, and others), and ... Europe , Asia Pacific ...
(Date:3/24/2017)... -- Research and Markets has announced the addition of ... - Industry Forecast to 2025" report to their offering. ... The Global Biometric Vehicle ... around 15.1% over the next decade to reach approximately $1,580 million ... estimates and forecasts for all the given segments on global as ...
Breaking Biology News(10 mins):
(Date:4/21/2017)... (PRWEB) , ... April 21, 2017 , ... ... and Webster Bank, today announced first round funding to three startups through the ... early-stage financial support to new business startups affiliated with UConn. , The UConn ...
(Date:4/21/2017)... (PRWEB) , ... April 21, 2017 , ... The AMA ... 11 high school graduates from across the nation. The scholarships are created through funds ... member dues. , Scholarship criteria are set by the AMA Scholarship Committee, which is ...
(Date:4/21/2017)... ... ... Frederick Innovative Technology Center, Inc. (FITCI), a business incubator ... a $77,518 grant from the Rural Maryland Council (RMC) to support refurbishment of ... incubator. A non-profit corporation, FITCI is a public-private partnership of the governments of ...
(Date:4/20/2017)... ... April 20, 2017 , ... ... their strategic partnership to offer a full spectrum of digital security goods and ... of biometric products and the ground-breaking proactive cybersecurity services and products through Assured ...
Breaking Biology Technology: