Navigation Links
New discovery: If it weren't for this enzyme, decomposing pesticide would take millennia

CHAPEL HILL ?An enzyme inside a bacterium that grows in the soil of potato fields can -- in a split second -- break down residues of a common powerful pesticide used for killing worms on potatoes, researchers have found.

That may be expensive for farmers but lucky for the environment because University of North Carolina at Chapel Hill scientists have now discovered that if that particular enzyme weren't there, it would take 10,000 years for just half of the widely used pesticide to decompose. And the chemical would remain in the soil of the potato fields where it is now used in colossal amounts, contaminating groundwater and posing a threat to human and animal health.

A report on the unusual discovery appears online in the Proceedings of the National Academy of Sciences Monday (Oct. 24). Authors are Christopher M. Horvat, a UNC chemistry major from Spruce Pine, who plans to become a physician, and Dr. Richard V. Wolfenden, Alumni Distinguished professor of biochemistry and biophysics at the UNC School of Medicine.

"The half-life of the pesticide is longer, by several orders of magnitude, than the half-lives of other known environmental pollutants in water," Wolfenden said. "The half lives of atrazine, aziridine, paraoxon and 1, 2-dichloroethane, for example, are five months, 52 hours, 13 months and 72 years, respectively."

In contrast, the half-life of the potato pesticide residue chloroacrylate -- 10,000 years -- matches the half-life of plutonium-239, the hazardous isotope produced in nuclear power plants, he said.

The bacteria Pseudomonas pavonaceae have evolved in the soil in which the potato pesticide 1, 3-dichloropropene is used and can grow on it as their only source of carbon and energy, the scientist said. The enzyme responsible for degrading the pesticide may have evolved since the chemical's first use on potato fields in 1946. Common names for the agricultural product are Shell D-D and Telone II.

"There is al
'"/>

Source:University of North Carolina at Chapel Hill


Page: 1 2 3

Related biology news :

1. New discovery: Molecular variation in one gene affects the growth of natural populations
2. UCSD discovery may help extend life of natural pesticide
3. Scientists discuss improved biopesticides for locust control in West Africa
4. UN successfully tests green pesticide against locusts
5. Green catalyst destroys pesticides and munitions toxins, finds Carnegie Mellon University
6. Corn grain mould used as pesticide
7. Biotech cotton provides same yield with fewer pesticides
8. Most widely used organic pesticide requires help to kill
9. Fake pesticides threaten food safety
10. 100 percent of pregnant women have at least one kind of pesticide in their placenta
11. Premature births may be linked to seasonal levels of pesticides and nitrates in surface water
Post Your Comments:
(Date:3/23/2015)... 2015 SoundView Technology Group issues a new research ... ) Wocket smart wallet. SoundView was one of the selected user ... with the Wocket in multiple scenarios and outlets. ... other retailers, making both debit and credit card payments.  ... "If the company meets their plans in 2015, it would ...
(Date:3/20/2015)... Markets ( http://www.researchandmarkets.com/research/rswjb4/hand_geometry ) has announced the addition ... report to their offering. This report analyzes ... report provides separate comprehensive analytics for the US, ... Europe , Asia-Pacific , ... Annual estimates and forecasts are provided for the period 2013 ...
(Date:3/17/2015)... 17, 2015 MedNet Solutions , ... clinical study management systems, is pleased to announce ... ARENA,s Outsourcing in Clinical Trials Southeast conference – ... an excellent forum for MedNet to showcase ... software-as-a-service (SaaS) eClinical technology platform. We ...
Breaking Biology News(10 mins):Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 2Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 3Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 4Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 2Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 3Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 4Connect With MedNet Solutions At Outsourcing In Clinical Trials Southeast 2
... research team is challenging a prevailing belief about the behavior ... possibly breathing new life into the search for therapies that ... abnormal cell proliferation. "The body is made up of ... via receptors at their surfaces. To generate cellular responses, signaling ...
... Cancer Institute have discovered a gene activity signature that ... breast tumors that have been treated with commonly used ... the anthracycline class, the breast cancers bearing this gene ... of chemotherapy agents, say scientists in a letter to ...
... , SANTA ANA, Calif. and ISMANING, ... Inc., d.b.a. Identive Group (Nasdaq: INVE ; Frankfurt Stock ... the security, identification and RFID industries, today announced that it ... new executives in line with the announced reorganization of its ...
Cached Biology News:Researchers correct the record about behavior of important human protein tied to cancer 2Researchers correct the record about behavior of important human protein tied to cancer 3Genes found linked to breast cancer drug resistance could guide future treatment choices 2Genes found linked to breast cancer drug resistance could guide future treatment choices 3Genes found linked to breast cancer drug resistance could guide future treatment choices 4Identive Group Expands Executive Management Team 2Identive Group Expands Executive Management Team 3
(Date:4/16/2015)... Cambridge Semantics , the ... Semantic Web technology, and Informa , the ... for the academic and scientific, professional and commercial ... ‘Smart Data Lake for Clinical Trial and Competitive ... Bio-IT ‘Best of Show’ Award. , The ...
(Date:4/16/2015)... Capillus, LLC announces plans to ... in Europe and Asia. The Miami-based medical device ... former Business Development Director of Svenson Group Europe, ... Bermúdez’s professional achievements include increasing the number of ... penetrating the Portuguese marketplace with centers in Lisbon ...
(Date:4/16/2015)... CINCINNATI , April 16, 2015  Schulman Associates ... and technology, has signed a long-term lease on Laboratory ... Park, North Carolina . The location will house ... located to provide high quality reviews and customer service ... Raleigh represented Schulman in the deal, while ...
(Date:4/16/2015)... April 16, 2015 According to ... involving an outside source was ranked first among ... injuries related to lifting, pushing, pulling, holding, carrying, ... direct costs. The David Round Company takes statistics ... to working hard to develop and design equipment ...
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 3Capillus, LLC Extends Laser Hair Therapy Products to Europe and Asia 2Schulman IRB to Open Office in Research Triangle Park, N.C. 2The David Round Company Helps Companies Meet OSHA Standards by Combining Safety, Ergonomics, and Productivity 2
... and CFO -- LONDON, August 26, 2010 ... ... var shortURL ... longUrl, so we need to grab the first one. for (var r in data.results) { first_result = ...
... Atherotech Diagnostics Lab will exhibit its VAP® Cholesterol ... (NLA) Summer 2010 Clinical Lipid Update. The meeting takes ... D.C. Expert faculty and thought leaders will share their ... and emerging therapies for dyslipidemia and related cardiometabolic conditions. ...
... Reportlinker.com announces that a new market research report ... Target Atlas: Competitive Insights to Anti-Angiogenic Drug R&D ... There is a plethora of new ... tumor growth and metastases by angiogenesis inhibition represents ...
Cached Biology Technology:Hikma - Half Year Results Interviews With CEO and CFO 2Hikma - Half Year Results Interviews With CEO and CFO 3Hikma - Half Year Results Interviews With CEO and CFO 4Hikma - Half Year Results Interviews With CEO and CFO 5Expanded Lipoprotein Testing, VAP® Cholesterol Test Discussed at National Lipid Association Summer Clinical Lipid Update 2Expanded Lipoprotein Testing, VAP® Cholesterol Test Discussed at National Lipid Association Summer Clinical Lipid Update 3Reportlinker Adds Target Atlas: Competitive Insights to Anti-Angiogenic Drug R&D in Oncology 2Reportlinker Adds Target Atlas: Competitive Insights to Anti-Angiogenic Drug R&D in Oncology 3Reportlinker Adds Target Atlas: Competitive Insights to Anti-Angiogenic Drug R&D in Oncology 4Reportlinker Adds Target Atlas: Competitive Insights to Anti-Angiogenic Drug R&D in Oncology 5Reportlinker Adds Target Atlas: Competitive Insights to Anti-Angiogenic Drug R&D in Oncology 6Reportlinker Adds Target Atlas: Competitive Insights to Anti-Angiogenic Drug R&D in Oncology 7Reportlinker Adds Target Atlas: Competitive Insights to Anti-Angiogenic Drug R&D in Oncology 8Reportlinker Adds Target Atlas: Competitive Insights to Anti-Angiogenic Drug R&D in Oncology 9Reportlinker Adds Target Atlas: Competitive Insights to Anti-Angiogenic Drug R&D in Oncology 10Reportlinker Adds Target Atlas: Competitive Insights to Anti-Angiogenic Drug R&D in Oncology 11
... steel with stove enamel coated (RAL 7035 grey) ... Front, back and side windows 6 ... Internal adjustable tempered glass shelf ... Lighting 600 lux AC ...
...
... glass slide in this set of ... in triplicate, for a total of ... proteins as internal control. Antibodies belonging ... angiogenesis, apoptosis, cell cycle progression, signal ...
...
Biology Products: