HOME >> BIOLOGY >> NEWS
K-State professors make discovery in pesticide-resistant bugs

MANHATTAN -- Farmers have known for years that insects are able to become immune to insecticides over time. Learning how they become immune is one part of the fight against crop pests, and some Kansas State University professors have made a discovery in that area.

Greenbugs are a major pest of sorghum, wheat and other small grain crops in the Midwest. Organophosphates are one of the major classes of insecticides used to control greenbugs. But insects often become impervious to insecticides, and that has come true for the greenbugs and organophosphates.

Kun Yan Zhu, assistant professor of entomology at K-State, and former K-State graduate student Jian-Rong Gao discovered that some greenbugs developed their resistance in an unusual way. They are the first scientists to discover how this resistance works at the molecular level, Zhu said.

Zhu and Gao, who now works at the University of Massachusetts, were invited to present their work at the national meeting of the American Chemical Society April 7-11, in Orlando, Fla. Gao took first place in the 2002 Young Scientist Pre-and Postdoctoral Research award sponsored by the Agrochemicals Division and Dow Agrosciences for his work on greenbug resistance.

"There are millions of individuals of an insect pest species in a field. Some individuals may have certain genes that can confer resistance. Insects without such mechanisms will be killed by an insecticide. Those with the mechanisms survive and reproduce," Zhu said.

Greenbugs with the special immunity can be 13 times less sensitive for the enzyme known as acetylcholinesterase, or AChE, to certain organophosphates than normal greenbugs.

AChE is an enzyme that humans and insects alike need for their nervous systems to work correctly. Organophosphates kill insects by blocking the enzyme until their nervous systems do not function properly.

Genes are the DNA fragments directing the production of proteins or enzymes. Inse
'"/>

Contact: Kun Yan Zhu
kzhu@oznet.ksu.edu
785-532-4721
Kansas State University
7-Apr-2002


Page: 1 2

Related biology news :

1. K-State, other universities to study how climate affects plant evolution
2. K-States National Agricultural Biosecurity Center receives $1.3 Million from Department of Defense
3. K-State professor combines love of teaching, research to examine eye development
4. K-State researcher working to improve alternatives to equine antibiotics
5. K-State business researchers to help with major study on food supply veterinary medicine
6. K-State researchers share $1 million grant to study insect pests
7. K-State soil carbon sequestration research playing role in climate change efforts
8. K-State uses geographic tools to track plant pathogens
9. K-State professor to give paper on potential impact of ag bioterrorism
10. K-State scientists beetle chosen for national genome sequencing project
11. New science at K-State attracts $4.2 million from National Science Foundation

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


(Date:10/26/2019)... , ... October 23, 2019 , ... ... Christina Hughes , to its executive leadership team. , As a market ... solutions allow growth-stage biotech and pharma companies to reduce timelines and improve quality ...
(Date:10/26/2019)... ... October 25, 2019 , ... ... built, helium-based leak testing instruments for the Pharmaceutical, Biotechnology, Medical Device and Food ... advanced helium leak detection system, the SIMS Model 1915+ . The SIMS ...
(Date:10/22/2019)... ... ... Greenberg Traurig, LLP’s global Life Sciences & Medical Technology Group ... Sector,” with German biotech strategy consulting firm, Catenion. The seminar will take place from ... . , Speakers from Greenberg Traurig and Catenion will discuss best practices and practical ...
Breaking Biology News(10 mins):
(Date:11/9/2019)... ... November 08, 2019 , ... ... intelligence (AI)-powered technology for use in pathology research, today announced the results ... samples from patients enrolled in the phase 3 selonsertib studies (STELLAR). Strong ...
(Date:11/5/2019)... ... November 05, 2019 , ... ... has received CE Mark for its Fusion Bx 2.0 prostate fusion biopsy solution. ... interface, the Fusion Bx 2.0 will give urologists across Europe the ability to ...
(Date:11/2/2019)... ... October 31, 2019 , ... ... artificial intelligence pioneer tellic. drug360 brings tellic’s expertise in biomedical language processing ... researchers to quickly uncover relationships between genes, diseases, variants, phenotypes, and other biomedical ...
(Date:10/29/2019)... ... October 29, 2019 , ... ... to announce its Silver sponsorship and cold chain validation workshop at the Biomanufacturing ... Pines in San Diego, California. , The Biomanufacturing World Summit brings ...
Breaking Biology Technology:
Cached News: