Navigation Links
Team discovers how western corn rootworm resists crop rotation
Date:7/19/2012

CHAMPAIGN, Ill. A new study answers a question that has baffled researchers for more than 15 years: How does the western corn rootworm an insect that thrives on corn but dies on soybeans persist in fields that alternate between corn and soybeans? The answer, researchers say, has to do with enzyme production in the rootworm gut.

Their findings are described in a paper in Ecology and Evolution.

Crop rotation declined in the middle of the 20th century as the use of insecticides and fertilizers expanded in the U.S. Then in the 1950s and '60s, when some insecticides began to fail, growers again turned to crop rotation to kill off the rootworms that fed on corn. The method was effective for decades, but by 1995 some growers started seeing rootworm damage even in rotated fields. Today rotation-resistant rootworms are widespread in the Midwest cornbelt, where corn and soybeans dominate the landscape.

Crop rotation in East Central Illinois imposed intense selection pressure on rootworms, a key to the emergence of insect resistance to crop rotation, said University of Illinois crop sciences professor Manfredo Seufferheld, who led the new study.

"In Champaign County, Illinois, where you see a lot of rotation-resistant rootworms, 84 percent of the total land area is corn or soybeans," he said. "But as you go to Missouri, which has only wild-type (non-resistant) rootworms, almost 50 percent of the land area is not corn or soy."

Rootworm larvae live on the roots of corn plants, so it makes no sense for a rootworm beetle to deposit its eggs in a soybean field, Seufferheld said. "But with crop rotation, we're making special conditions that allow those crazy insects to survive."

Previous studies focused primarily on the behavioral changes that led rootworm beetles into soybean
'/>"/>

Contact: Diana Yates
diya@illinois.edu
217-333-5802
University of Illinois at Urbana-Champaign
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Team discovers how bacteria resist a Trojan horse antibiotic
2. Study discovers genetic pathway impacting the spread of cancer cells
3. NOAA discovers way to detect low-level exposure to seafood toxin in marine animals
4. New study discovers powerful function of single protein that controls neurotransmission
5. La Jolla Institute scientist discovers key step in immune system-fueled inflammation
6. NUS-led research team discovers how bacteria sense salt stress
7. Mesquite trees displacing Southwestern grasslands
8. Study finds Western diet detrimental to fetal hippocampal tissue transplants
9. Grants add to Northwestern-Qatar partnership
10. NASA satellite sees several western US fires blazing
11. UCSB scientists compile first study of potential for tsunamis in northwestern California
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Team discovers how western corn rootworm resists crop rotation
(Date:3/24/2015)... March 24, 2015   NexID Biometrics LLC, ... security-authentication needs, today announced the beginning of shipments of ... The company, based in Potsdam, ... three-day Connect:ID Expo, which began here today at the ... version 2.0 of its SDK boosts the accuracy rate ...
(Date:3/23/2015)... Mar. 23, 2015 NXT-ID, Inc. (NASDAQ: NXTD ) ... the growing mobile commerce market, announces its biometric payment technology, ... on CNBC television starting March 30 th . ... in New York markets. ... are excited about our new ad campaign following the recent ...
(Date:3/19/2015)... , March 19, 2015  NXT-ID, Inc. (NASDAQ: ... company focused on the growing mobile commerce market, announces its ... a news clip that aired this week on ... . In a segment "The Next Great Thing", ... ,a new way to pay, and ,a really big breakthrough ...
Breaking Biology News(10 mins):NexID Begins Shipments Of Version 2.0 Fake-Finger-Detection Solution 2NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 2NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 3NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 2NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 3
... fight against the deadly Hendra virus following the development of ... of people who become infected with the virus. ... that administering human monoclonal antibodies after exposure to Nipah virus, ... challenge in a disease model. According to CSIRO,s Dr ...
... SCM Microsystems, Inc. (Nasdaq: SCMM ) (Prime Standard: ... identity and secure exchange, announced today that its stockholders have ... during yesterday,s annual meeting of stockholders. , At ... of SCM,s stockholders cast their votes and a majority followed ...
... that around 2.4 billion years ago, the Earth,s atmosphere ... Called the "Great Oxidation Event" (GOE), the oxygen ... transformation from an oxygen-poor atmosphere to an oxygen-rich one ... the planet. Two questions that remain unresolved in ...
Cached Biology News:Breakthrough in fight against Hendra virus 2SCM Microsystems Announces Results of Annual Meeting 2A new wrinkle in ancient ocean chemistry 2A new wrinkle in ancient ocean chemistry 3
(Date:4/16/2015)... April 16, 2015 Cambridge ... solutions driven by Semantic Web technology, and ... information and services for the academic and scientific, ... its joint solution ‘Smart Data Lake for Clinical ... for the 2015 Bio-IT ‘Best of Show’ Award. ...
(Date:4/16/2015)... 2015 Proove Biosciences , Inc. ... BIO Contest for the 2015 BIO International Convention. ... BIO International Convention will take place June 15-18 at ... Buzz of BIO contest, industry leaders will be voting ... the conference. The community voting period began on April ...
(Date:4/16/2015)... 2015 According to the 2014 ... outside source was ranked first among the leading ... to lifting, pushing, pulling, holding, carrying, or throwing ... The David Round Company takes statistics like this ... hard to develop and design equipment that prevents ...
(Date:4/16/2015)... -- In recognition of World Hemophilia Day, Biogen  (NASDAQ: ... more than 15 prominent landmarks red throughout the ... Zakim Bridge and Prudential Tower, Chicago,s ... and Denver,s Coors Field . ... and coincide with hemophilia community events in a dozen locations ...
Breaking Biology Technology:Cambridge Semantics and Informa Named Bio-IT Award Finalist for Smart Data Lake Solution for Clinical Trial and Competitive Intelligence 2Cambridge Semantics and Informa Named Bio-IT Award Finalist for Smart Data Lake Solution for Clinical Trial and Competitive Intelligence 3Proove Bisociences to Participate in the Buzz of BIO at the 2015 BIO International Convention 2Proove Bisociences to Participate in the Buzz of BIO at the 2015 BIO International Convention 3The David Round Company Helps Companies Meet OSHA Standards by Combining Safety, Ergonomics, and Productivity 2Biogen Shines A Light On Hemophilia Community By Illuminating U.S. Landmarks Red On World Hemophlia Day 2Biogen Shines A Light On Hemophilia Community By Illuminating U.S. Landmarks Red On World Hemophlia Day 3Biogen Shines A Light On Hemophilia Community By Illuminating U.S. Landmarks Red On World Hemophlia Day 4
... out of the desert floor at a place called Ash Meadows, ... found nowhere else in the world. A new Brigham Young ... completing a 15,000-year journey, flowing slowly underground from what is now ... there for four decades, and a crack in the Earth,s crust ...
... , June 17 On Friday June 11th , ... for the District of Delaware issued an important pre-trial ruling ... , , , ... defined several key phrases contained in Roquette,s patent claims, thereby dealing a ...
... ... have demonstrated its ability to diminish or eliminate tumor load in melanoma, breast cancer, colon ... ... Inc., a regenerative medicine company developing solutions based on the products of newborn cells grown ...
Cached Biology Technology:SPI Pharma Gains Ground in Roquette Patent Dispute 2Human Embryonic-Like Extracellular Matrix Significantly Inhibits Tumor Growth and Cancer Cell Proliferation 2Human Embryonic-Like Extracellular Matrix Significantly Inhibits Tumor Growth and Cancer Cell Proliferation 3
Gap junction protein, beta 2, 26kDa (connexin 26) Antigen: Peptide...
NAP-2 (5C7)...
... The CellSensor CRE-bla HEK 293T cell ... control of the cAMP response element (CRE). ... construct was transduced into HEK 293T cells ... to isolate clones responsive to forskolin stimulation ...
1, 2 or 8 PreMixes are included as part of the FailSafe™ PCR System....
Biology Products: