Navigation Links
Combating infection of crops by nematodes is soon to improve
Date:1/18/2009

Nematodes

Nematodes are small worms. Some species are plant-parasitic and infect plants including important agricultural crops. The typical symptoms of a nematode-infection are withering, seriously retarded growth, and impaired development of flower and fruit. Severely infected plants often do not survive the damage that the worms inflict. Each year, plant-parasitic nematodes cause more than 80 billion euro in agricultural losses worldwide.

Plant roots as food factories

Some of these nematodes have developed an ingenious way of making a plant feed them. They penetrate the plant's roots and make their way to their host's vascular bundles, which are part of the plant's transport system for water, minerals, sugars, and other nutrients. The nematodes select a single plant cell in the vascular bundle system and then inject this cell with a cocktail of proteins. The activating influence of these proteins causes the plant cell to merge with neighboring cells and to start producing food for the nematode. This plant cell − which can become as large as 200 normal plant cells − is called the nematode feeding site.

Nematodes trick the plant

Research has revealed that nematodes mislead the plant by disrupting its hormonal regulation. The plant hormone auxin, which is important for nearly every one of the plant's developmental processes, accumulates at the site of infection. Later, when the feeding site needs to grow, auxin accumulates in the neighboring plant cells. Until now, scientists have not known how nematodes manipulate the transport of auxin.

PIN proteins

Wim Grunewald and his colleagues from VIB and Ghent University have been studying the role of PIN proteins in a popular model plant: the mouse ear cress (Arabidopsis thaliana). These plant proteins enable the transport of auxin from one cell to another. To discover the specific function of the various PIN proteins, the researchers have used plants that, through manipulation, are not able to produce PIN1, PIN2, PIN3, PIN4 or PIN7. In this way, the researchers have been able to show that nematodes knock out certain of the plant's PIN proteins, while other PIN proteins are activated just to transport auxin to the neighboring cells.

With this discovery, the scientists are taking us a step closer towards fully understanding the way in which nematodes feed themselves through plants. Ways to thwart the nematodes can then be invented − for example, by locally counteracting the nematodes' manipulation of auxin transport. Because current methods for protecting agricultural and other crops against nematodes require substances that are very environmentally unfriendly, this finding can lead to important improvements in combating this costly problem.


'/>"/>

Contact: Evy Vierstraete
info@vib.be
329-244-6611
VIB (the Flanders Institute for Biotechnology)
Source:Eurekalert

Related biology technology :

1. Nature Medicine study shows Peregrines bavituximab can cure lethal virus infections
2. Ultrasound Transducer Disinfection in Many Cases Insufficient
3. ANA598 Receives Fast Track Designation From the FDA for the Treatment of Chronic Hepatitis C Infection
4. Sangamo BioSciences Presents Data at ICAAC Demonstrating In Vivo Protection Against HIV Infection by CCR5-ZFN Therapeutic
5. Positive Study Results for Ceftaroline Phase III Clinical Study for the Treatment of Complicated Skin and Skin Structure Infections Presented at ICAAC / IDSA
6. AdvanDxs PNA FISH(TM) Test Shown to Reduce Mortality by 42% for Patients With Hospital-Acquired Enterococcus faecium Bloodstream Infections
7. Researchers decode viral process that prepares cells for HIV infection
8. eGenomics Awarded First U.S. Patent Covering Rapid DNA Sequencing Technology Platform to Control Hospital-Acquired Infections
9. A Statement From Larry Corey, MD, of the HIV Vaccine Trials Network Regarding the New HIV Infection Statistics Released Today by the Centers for Disease Control
10. Improved culture system for hepatitis C virus infection
11. Noted Molecular Epidemiologist Joins Cepheid to Head Healthcare Associated Infection Consortium Program
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/24/2016)... Raleigh, NC (PRWEB) , ... June 24, 2016 , ... ... find the most commonly-identified miRNAs in people with peritoneal or pleural mesothelioma. Their findings ... here to read it now. , Diagnostic biomarkers are signposts in the blood, ...
(Date:6/23/2016)... /PRNewswire/ - FACIT has announced the creation of ... company, Propellon Therapeutics Inc. ("Propellon" or "the Company"), ... portfolio of first-in-class WDR5 inhibitors for the treatment ... represent an exciting class of therapies, possessing the ... cancer patients. Substantial advances have been achieved with ...
(Date:6/23/2016)...  The Prostate Cancer Foundation (PCF) is pleased to announce 24 ... for prostate cancer. Members of the Class of 2016 were selected from a ... Read More About the Class of 2016 PCF Young Investigators ... ... ...
(Date:6/23/2016)... ... June 23, 2016 , ... STACS DNA Inc., the sample ... the Arkansas State Crime Laboratory, has joined STACS DNA as a Field Application Specialist. ... said Jocelyn Tremblay, President and COO of STACS DNA. “In further expanding our capacity ...
Breaking Biology Technology:
(Date:6/15/2016)... 2016 Transparency Market Research ... Market by Application Market - Global Industry Analysis Size Share ... the report, the  global gesture recognition market  was ... is estimated to grow at a CAGR of ... Increasing application of gesture recognition technology ...
(Date:6/7/2016)... , June 7, 2016  Syngrafii Inc. and ... business relationship that includes integrating Syngrafii,s patented LongPen™ ... project. This collaboration will result in greater convenience ... credit union, while maintaining existing document workflow and ... ...
(Date:6/2/2016)... NEW YORK , June 2, 2016   The ... (Weather), is announcing Watson Ads, an industry-first capability in which ... advertising, by being able to ask questions via voice or ... Marketers have long ... with the consumer, that can be personal, relevant and valuable; ...
Breaking Biology News(10 mins):