HOME >> BIOLOGY >> NEWS
New possibilities to fight pests with biological means

Corn plants emit a cocktail of scents when they are attacked by certain pests, such as a caterpillar known as the Egyptian cotton leaf worm. Parasitic wasps use these plant scents to localize the caterpillar and deposit their eggs on it, so that their offspring can feed on the caterpillar. Soon after, the caterpillar dies and the plant is relieved from its attacker. In the case of corn, only one gene, TPS10, has to be activated to attract the parasitic wasps. This gene carries information for a terpene synthase, an enzyme forming the sesquiterpene scent compounds that are released by the plant and attract wasps toward the damaged corn plant. Since this mechanism is based only on a single gene, it might be useful for the development of crop plants with a better resistance to pests (PNAS, Early Edition, January 16-20, 2006).

At least 15 species of plants are known to release scents after insect damage, thus attracting the enemies of their enemies. Scientists term this mechanism "indirect defence". A previous cooperation by the scientists in Neuchatel and Jena showed that indirect defence functions not only above ground, but also below the earth's surface [1].

To understand the biochemistry behind this plant defence, biologists of the Max Planck institute studied corn plants, caterpillars of the species Spodoptera littoralis (Egyptian cotton leaf worm) and parasitic wasps of the species Cotesia marginiventris. Deciphering the complex mix of scents that the plants release after damage offered clues as to which classes of enzymes might be important for scent production.

The researchers isolated various genes encoding terpene synthases, the enzymes that produce these scents. One of these genes, TPS10, produced the exact bouquet of nine scent compounds that was released by the damaged corn plant. To demonstrate that TPS10 is indeed the important gene, the scientists introduced TPS10 into another plant, called Arabidopsis thaliana, which then rele
'"/>

Contact: Dr. Jrg Degenhardt
degenhardt@ice.mpg.de
49-364-157-1329
Max-Planck-Gesellschaft
17-Jan-2006


Page: 1 2

Related biology news :

1. Potent possibilities for parasite attack
2. Heart failure: Intervention possibilities from imaging programmed cell loss
3. Research on microfluidics widens the possibilities for electronic devices
4. Plants, plasmids and possibilities -- Methods permit functional gene studies in plants
5. Poplar DNA code cracked -- new possibilities for sustainable energy
6. New possibilities for flu antiviral and vaccine research emerge from Spanish flu virus
7. Brains opioid receptorsor endorphin systemmay hold key to treatment possibilities for bulimia
8. Alzheimers disease; new approach, new possibilities?
9. Discoverer of Sly Syndrome finds way of delivering medicine to fight rare genetic disorder
10. CRESIB coordinates an international consortium to fight malaria caused by Plasmodium vivax
11. Tumor painting revolutionizes fight against cancer

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/14/2019)... ... May 13, 2019 , ... ... 4th, at a very special Pre-EWMA 2019 event at Gothenburg’s Universeum Aquarium. Guests ... Trends, Opportunities and Innovations in Advanced Wound Care. , SmartTRAK’s Advanced Wound Care ...
(Date:5/8/2019)... ... May 07, 2019 , ... Modality ... invitation-only community for world-class CIOs, CTOs, and technology executives. Modality Solutions ... firm that guarantees confidence in a company’s cold chain. Subject-matter experts provide ...
(Date:5/8/2019)... Conn. and TORONTO (PRWEB) , ... May 08, ... ... growth recapitalization of Axiom Real-Time Metrics (“Axiom”), a premier provider of unified eClinical ... II and III clinical trials and observational studies. Axiom is a leading e-clinical ...
Breaking Biology News(10 mins):
(Date:4/8/2019)... ... April 08, 2019 , ... ... collaboration solutions, announced today the launch of their app integration solution, CT Cloud ... business and contact-orientated applications while using CT Cloud Voice and Skype for Business ...
(Date:4/4/2019)... ... April 02, 2019 , ... Biomeme, Inc. , a ... latest field-ready solution for performing PCR, RT-PCR, qPCR, and Isothermal tests called ... Rosland Franklin, an English chemist and X-ray crystallographer who made significant contributions to ...
(Date:3/27/2019)... ... March 26, 2019 , ... A leader in the ... services to veterinarians across the United States and Canada since 2004. The primary ... soft tissue injuries in the dog, cat, and horse. Recently, VetStem teamed ...
(Date:3/23/2019)... ... March 22, 2019 , ... uBiome has ... a team of researchers at Nnamdi Azikiwe University in Anambra State, Nigeria led ... PhD, of the Department of Medical Laboratory Sciences and Deputy Provost, College of ...
Breaking Biology Technology:
Cached News: