Navigation Links
Bigger refuges needed to delay pest resistance to biotech corn
Date:6/8/2012

Genetically modified crops that produce insect-killing proteins from the bacterium Bacillus thuringiensis (Bt) have reduced reliance on insecticide sprays since 1996. These proteins are lethal to some devastating crop pests, but do not harm most other creatures including humans.

Yet, just as insects become resistant to conventional insecticides, they also can evolve resistance to the Bt proteins in transgenic crops.

To delay pest resistance to Bt proteins, the U.S. Environmental Protection Agency, or EPA, has required farmers to plant "refuges" of crops that do not produce Bt proteins near Bt crops. Refuges are planted with standard, non-Bt crops that pests can eat without ingesting Bt toxins.

Planting refuges promotes survival of susceptible pests. If susceptible pests greatly outnumber resistant pests, resistant individuals are unlikely to mate with each other and produce resistant offspring.

But how much refuge acreage is enough?

In an article appearing in the June 2012 issue of the Journal of Economic Entomology, authors Bruce Tabashnik from the University of Arizona and Fred Gould from North Carolina State University conclude the EPA should more than double the percentage of corn acres planted to mandated refuges to delay insect resistance, encourage integrated pest management, or IPM, and promote more sustainable crop protection.

To slow resistance in the western corn rootworm (Diabrotica virgifera virgifera), a beetle that is one of the most economically important crop pests in the U.S., the EPA currently requires 20 percent of the total acreage being set aside as refuges for corn producing one Bt protein (Cry3Bb1), and a 5 percent refuge portion for corn that simultaneously produces two different Bt proteins.

However, the authors note that this adaptable pest has rapidly evolved resistance to Cry3Bb1 in some areas of the U.S. Corn Belt. For Bt corn to remain effective aga
'/>"/>

Contact: Daniel Stolte
stolte@email.arizona.edu
520-626-4402
University of Arizona
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Bigger gorillas better at attracting mates and raising young
2. Increasing water scarcity in Californias Bay-Delta will necessitate trade-offs; hard decisions needed to balance various environmental risks
3. Urgent research needed to determine most effective follow-up care for lung cancer patients
4. Report addresses challenges in implementing new diagnostic tests where they are needed most
5. European mountain plant population shows delayed response to climate change
6. Researchers attempt to solve problems of antibiotic resistance and bee deaths in one
7. BRG1 mutations confer resistance to hormones in lung cancer
8. Genetic variation in East Asians found to explain resistance to cancer drugs
9. New paper examines poison resistance in snakes around the world
10. Hot on the trail of metabolic diseases and resistance to antibiotics
11. Notre Dame researchers using novel method to combat malaria drug resistance
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Bigger refuges needed to delay pest resistance to biotech corn
(Date:10/18/2014)... a group of 2,000 patients referred for evaluation ... potential molecular diagnosis for 25 percent, including detection ... new mutations contributing to disease, according to a ... is being released to coincide with the American ... sequencing analyzes the exons or coding regions of ...
(Date:10/17/2014)... in German . ... drugs. When treating overdoses, doctors are often limited to supportive ... there is a combination of drugs involved. So what can ... his grandmother,s pills? ETH professor Jean-Christophe Leroux from the Institute ... answer to this question. "The task was to develop an ...
(Date:10/16/2014)... cultivated efficiently, they are anything but sustainable: environmental ... cultivation is becoming increasingly evident. Despite their disadvantages, ... are regarded as the sole possibility of achieving ... finds Bernhard Schmid, an ecology professor at the ... of agriculture and forestry. After all, a new ...
Breaking Biology News(10 mins):Whole-exome sequencing shows potential as diagnostic tool 2Emergency aid for overdoses 2Emergency aid for overdoses 3Plant communities produce greater yield than monocultures 2Plant communities produce greater yield than monocultures 3
... Protection Agency (EPA) has awarded nearly $2.5 million ... eight key environmental areas: monitoring and control of ... hazardous waste monitoring, water infrastructure, homeland security, nanotechnology ... received "proof of concept" awards from EPA, and ...
... -- Tufts University,s School of Arts and Sciences has ... that will house a Collaborative Cluster in Genome Structure ... will bring together experts in such areas as genome ... engineering to focus on "genome to organism" research to ...
... Researchers from Mahidol University have developed a rapid, ... The related report by Munkongdee et al, "Rapid ... the May 2010 issue of The Journal of ... caused by a genetic defect in the production of ...
Cached Biology News:EPA awards small businesses to develop new environmental technologies 2Tufts wins NCRR grant for Collaborative Cluster in Genome Structure and Developmental Patterning 2Tufts wins NCRR grant for Collaborative Cluster in Genome Structure and Developmental Patterning 3
(Date:10/20/2014)... Rochelle, Virginia (PRWEB) October 20, 2014 ... of NDA Partners LLC, announced today that Ellen ... and legal support for the pharmaceutical industry, has ... and manager of its legal services practice. ... reports and expert witness and testimony, to top ...
(Date:10/19/2014)... The Latin American hardware encryption display market ... with analysis and forecast of revenue. This market was ... to reach $2,366.8 million by 2018, at a CAGR ... the TOC of the Latin American hardware encryption market ... provided. It also provides a glimpse of the segmentation ...
(Date:10/19/2014)... 2014 NextCODE Health, which enables clinicians and researchers ... time, today announced the launch of its new genomic data ... the American Society of Human Genetics (ASHG) annual meeting in ... up and apply for free beta access, visit www.nextcode.com ... can be viewed here . The Exchange: ...
(Date:10/19/2014)... The Asian Automatic patient billing report defines and segments ... revenue. The Automatic patient billing market in Asia is ... at a developing CAGR of 7.2% from 2013 to ... Automatic patient billing market, to get an idea of ... of the segmentation of this market in the same ...
Breaking Biology Technology:NDA Partners Appoints Ellen Teplitzky, JD as Director of its Legal Services Practice 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 3The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 2The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 3The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 2The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 3
... Double Helix Consulting US (DHC US), headed ... team of highly experienced strategic pricing, reimbursement and ... healthcare industry as well as strong commercial, governmental ... strategies to clients in the pharmaceutical, biotechnology and ...
... MAP,Pharmaceuticals, Inc. (Nasdaq: MAPP ) today announced ... of its initial Phase 3 clinical,trial evaluating MAP0004, the ... of migraine. , "In our ... be,both fast acting and long-lasting, providing pain relief in ...
... on its recent analysis of the ophthalmic pharmaceuticals ... 2009 North American Frost & Sullivan Technology Innovation ... developing antibody fragments. The smaller size of ESBATech,s ... many of the challenges associated with whole antibodies ...
Cached Biology Technology:London-Based Double Helix Consulting Launches US Division for Strategic Pricing, Reimbursement and Market Access Solutions 2MAP Pharmaceuticals Announces Completion of Enrollment in Phase 3 Clinical Trial of MAP0004 in Patients with Migraine 2MAP Pharmaceuticals Announces Completion of Enrollment in Phase 3 Clinical Trial of MAP0004 in Patients with Migraine 3Frost & Sullivan Recognizes ESBATech's Innovation in Developing Antibody Fragments for Biologic Therapeutics 2Frost & Sullivan Recognizes ESBATech's Innovation in Developing Antibody Fragments for Biologic Therapeutics 3Frost & Sullivan Recognizes ESBATech's Innovation in Developing Antibody Fragments for Biologic Therapeutics 4
Complete cell culture media with cytokines...
... cups provide flexible sealing lips for ... surfaces. ,PFG: Flat cup ,PBG: Bellows ... Multiple Bellows cup , Range ... 200 mm , Multiple suction cup ...
Total Proteins from over 50 different human Alzheimer, Diabetic, Liver Cirrhosis, and Lupus diseased tissues are available....
Total Proteins from over 50 different human Alzheimer, Diabetic, Liver Cirrhosis, and Lupus diseased tissues are available....
Biology Products: