Restoring a natural root signal helps to fight a major... (eds but during sowing it was unintention...)

Restoring a natural root signal helps to fight a major corn pest

Date:8/3/2009

eds, but during sowing it was unintentionally emitted as dust from abraded seeds, contaminated flowers, and poisoned 330 million honey-bees.

"Instead of using insecticides, the use of natural enemies of the corn rootworm could be much more environmentally friendly," says Jrg Degenhardt, who was recently appointed professor at the University of Halle. While working in the group of Jonathan Gershenzon at the Max Planck Institute for Chemical Ecology in Jena he had already contributed to a key discovery four years ago by Sergio Rasmann in the group of Ted Turlings at the University of Neuchtel. They found that maize roots attacked by rootworm attract nematodes by releasing (E)-beta-caryophyllene (EβC). One striking finding was that, after decades of breeding, most North American maize varieties no longer emitted EβC and had lost the ability to attract protective nematodes.

Therefore the research group in Jena and Neuchtel teamed up again in an attempt to restore the EβC signal in a variety that normally does not emit the substance. Jrg Degenhardt, with the help of Monika Frey at the Technical University of Munich, transformed a non-emitting maize line with a gene that encodes an EβC generating enzyme, resulting in continuous emissions of EβC. Next, the Turlings group in Neuchtel sent Ivan Hiltpold to Missouri, where, under the guidance of Bruce Hibbard of the United States Department of Agriculture, the transformed plants were tested in the field.

"Our study showed that the re-established natural EβC signal greatly enhanced the effectiveness of nematodes in controlling Western corn rootworm", Hiltpold reports. In rows with EβC-producing maize plants root damage was greatly reduced; 60% fewer Diabrotica beetles emerged as compared to rows with non-transformed maize plants. This control efficiency approaches that of conventional synthetic insecticides used to fight Diabrotica. Subsequent laboratory studies c
'/>"/>

Contact: Joerg Degenhardt
joerg.degenhardt@pharmazie.uni-halle.de
49-034-555-25100
Max Planck Institute for Chemical Ecology
Source:Eurekalert

0

GOOD

Page: 1 2 3
Related biology news :

1. Restoring Alabamas coast
2. Restoring fish populations leads to tough choice for Great Lakes Gulls
3. Window of opportunity for restoring oaks small, new study finds
4. Restoring sight, advances in fertility treatments and better visibility for pilots at FIO
5. Salt marshes: A natural and unnatural history
6. Scientists link immune systems natural killer cells to infant liver disease
7. Natural compound stops retinopathy
8. Natural-born divers and the molecular traces of evolution
9. Natural seed treatment could drastically cut pesticide use
10. Small molecules mimic natural gene regulators
11. Rabbits on the back foot -- but naturally theyre fighting back

Post Your Comments:

Related Image:

Restoring a natural root signal helps to fight a major corn pest

(Date:12/11/2009)... premium fruit increases, growers are being challenged to ... boost their bottom line, orchard owners are experimenting ... while reducing labor costs. , Hand thinning, a ... healthier fruit, is among the most labor-intensive of ... production overhead, and, ultimately, prices paid by consumers. ...

(Date:12/11/2009)... Scientists studying how bacteria under stress collectively weigh and ... insights into how humans make strategic decisions that affect ... society. , Their study, published this week in the ... the National Academy of Sciences , was accomplished when ... to describe the complex interplay of genes and proteins ...

(Date:12/11/2009)... two decades, Ivy Pike, an associate professor of anthropology ... groups in rural northern Kenya to understand how violence ... there. , The results of her and her colleagues, ... three pastoralist communities of northern Kenya: A conceptual framework," ... Social Science and Medicine , in collaboration with the ...

[0] Horizontal string trimmer reduces labor costs, increases peach size [0] Bacteria provide new insights into human decision making [0] UA-led study grapples with health effects of low-intensity warfare

... Chicago show how the bacteria that cause the plague manage ... one of the microbe's tools, the researchers produced what may ... -- one published online July 28 in Science Express and ... focus on aspects of the type-III pathway, a molecular syringe ...

... crop plants, scientists have deciphered the genome of a ... , The research provides clues to better explain how ... and seeds from infection by harmful microbes that cause ... Nature Biotechnology and was scheduled to be posted online ...

... of exactly how the brain controls breathing is fundamental ... breathing is an automatic rhythmic process that persists without ... the question that has intrigued many scientists for well ... safe vital rhythm throughout life? , Experimental Physiology editor ...

Other Biology News:Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine 2 Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine 3 Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine 4 Genome study of beneficial microbe may help boost plant health 2 How exactly does the brain control breathing? 2

Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine Genome study of beneficial microbe may help boost plant health How exactly does the brain control breathing?

(Date:12/15/2009)... the launch of several innovative new programs to aid ... current economic climate. The first is aimed at ... services over a period of 6, 12, 18, or ... companies. The second is aimed at more established ... 6 to 12 month period at discounted rates, and ...

(Date:12/14/2009)... Dec. 14 The third edition of ... , published by the Infusion Nurses ... for anthracycline extravasation.(1) Anthracyclines are a group ... epirubicin that have been used in the treatment ... 1970s.(2) ,, According to the INS ...

(Date:12/14/2009)... completed the delivery of Brookfield Engineering’s Powder Flow Tester – ... with a smaller footprint and more compact design. , ... ... -- ThermoFab, a US-based thermoforming company, has completed the delivery ... from sheet metal to a plastic enclosure with a smaller ...

(Date:12/11/2009)... 2009 -- Researchers have discovered a new explanation for differences ... excess copies of a certain gene, the more serious the ... it is suspected that it is the amount of copies ... being published in the American Journal of Human Genetics ... of Guy Froyen connected to VIB, a life sciences research ...

Breaking Biology Technology:The Prinz Law Office Launches Innovative New Programs to Aid Cash-Strapped Entrepreneurs and Businesses 2 Infusion Nurses Society References Totect(R) (Dexrazoxane For Injection) as the Only Antidote for the Treatment of Anthracycline Extravasation 2 Infusion Nurses Society References Totect(R) (Dexrazoxane For Injection) as the Only Antidote for the Treatment of Anthracycline Extravasation 3 Infusion Nurses Society References Totect(R) (Dexrazoxane For Injection) as the Only Antidote for the Treatment of Anthracycline Extravasation 4 Infusion Nurses Society References Totect(R) (Dexrazoxane For Injection) as the Only Antidote for the Treatment of Anthracycline Extravasation 5 Thermofab Helps Brookfield Engineering Move To A Compact Custom Plastic Enclosure 2 Amount of gene surplus determines severity of mental retardation in males 2

[0] The Prinz Law Office Launches Innovative New Programs to Aid Cash-Strapped Entrepreneurs and Businesses [0] Infusion Nurses Society References Totect(R) (Dexrazoxane For Injection) as the Only Antidote for the Treatment of Anthracycline Extravasation [0] Thermofab Helps Brookfield Engineering Move To A Compact Custom Plastic Enclosure [0] Amount of gene surplus determines severity of mental retardation in males

... months back I wrote about the negative effects of what ... problems in business can be solved by changing the way ... process management view of sorting out problems is simple ... as designed or wasnt designed properly in the first place. ...

... Red blood cells, some of which are affected by ... Wis. Third Wave Technologies , a Madison-based ... it has sued the California-based Stratagene Corp. ... it has patented the technology used in Stratagenes probe-based ...

... lunch in Chicago on Ontario Street with my young friend Jessica. ... she is six months into her first full-time job and already ... job lacks is career advancement, she told me. So this headhunter ... them about career advancement. She didnt even want me to use ...

Other Biology Technology:Human networks: an antidote to process ideology 2 Human networks: an antidote to process ideology 3 Human networks: an antidote to process ideology 4 Third Wave files patent infringement suit against Stratagene 2 Don't be muzzled in your Midwest technology job search 2 Don't be muzzled in your Midwest technology job search 3

Human networks: an antidote to process ideology Third Wave files patent infringement suit against Stratagene Don't be muzzled in your Midwest technology job search

Puromycin resistance gene (pac), provided in a pORF plasmid. pORF is an expression plasmid selectable with Ampicillin....

...

... template is designed to allow neomycin/kanamycin ... The loxP-PGK-gb2-neo-loxP template encodes the ... prokaryotic promoter (gb2) for expression of ... eukaryotic promoter (PGK) for expression of ...

... precision 5mm diameter, 7 inch long PYREX NMR ... compatibility with ground joints, valves, and vacuum racks. ... running from 300 to 500MHz. They have an ... of 4.20 + 0.013-0.000mm. These NMR tubes can ...

Biology Products:

pORF39-Pac from InvivoGen SkanWasher 400 from Molecular Devices loxP flanked, Pro and Euk. Neomycin Selection Cassette (loxP-PGK-gb2-neo-loxP) from Gene Bridges GmbH Pyrex brand 5mm diameter NMR tubes from Sigma-Aldrich

Restoring a natural root signal helps to fight a major...(eds but during sowing it was unintention...)