Navigation Links
Improved Fungicides May Be Easier on Environment

Products in development expand on plants' natural defenses, researchers explain

MONDAY, March 23 (HealthDay News) -- A new group of environmentally friendly fungicides may prove to be safer, more selective and less likely to fall victim to pests becoming resistant to them over time, Canadian researchers report.

Called phytoalexin detoxification inhibitors, or paldoxins, the fungicides bolster a plant's natural defenses by blocking access to the chemical pathways that fungi use to weaken a plant's resistance. Unlike conventional fungicides that kill everything -- good and bad -- in their path, paldoxins harm only the disease-causing organisms, said the researchers, who were to present their work Monday in Salt Lake City at the national meeting of the American Chemical Society.

"Our products only attack the fungus when it's misbehaving or attacking the plant. And for that reason, they're much safer," study leader Soledade Pedras, a chemistry professor at the University of Saskatchewan in Canada, said in a news release from the meeting sponsor.

Plants produce natural chemicals called phytoalexins that help them ward off attacking fungi. However, sometimes fungi can become too tough, destroying the phytoalexin and overwhelming the defenseless plant.

In laboratory tests on plants that normally handle fungicides well, Pedras's team found that the phytoalexin in a camelina, a flowering plant also called "false flax," proved to be the most powerful and effective at thwarting the killer enzymes many fungi use to attack plants.

"We found that many fungi couldn't degrade this chemical," Pedras said. "So that's what we used to design synthetic versions that were even stronger than the original."

The team has developed six synthetic versions of the paldoxins, which in lab tests have successfully protected generally fungicide-friendly crucifer plants and vegetables, such as rapeseed plants and mustard greens. Field tests, in which the paldoxins would be applied like regular pesticides, will soon take place on tougher-to-protect grass crops such as wheat, rye and oat, Pedras said.

More information

The U.S. Environmental Protection Agency has more on pesticide safety.

-- Kevin McKeever

SOURCE: American Chemical Society, news release, March 23, 2009

Copyright©2009 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. AWWA, National Association of Water and Sanitation of Mexico, Agree to Share Expertise and Resources for Improved Water Supply
2. MedQuist Re-launches New, Improved Web Site
3. Gene chip data improved therapy in some patients with incurable cancer
4. Phase II study shows HRPC patients with bone metastases see improved survival with ZD4054
5. Innovator Award to Berkeley Labs Joe Gray for improved breast cancer screening
6. Promising Phase 3 trial results show biologic therapy ustekinumab significantly improved psoriasis
7. Oridion Introduces New Smart Capnography System for Improved Patient Safety
8. Nursing Home Workers From Across the Nation to Rally in for Improved Nursing Home Care
9. Services for patients with BPD need to be improved say psychiatric nurses
10. Demonstration at Carlyle Group Offices Monday as Grassroots Caravan of Caregivers, Senior Advocates Arrives in D.C. to Speak Out for Improved Care, Staffing at Nations Largest Nursing Home Chain
11. Osteotech Reports 2007 Third Quarter Financial Results; Core Segment Revenue Increased 28%; Gross Margin Improved to 55%; Diluted Earnings Per Share of $.09
Post Your Comments:
Related Image:
Improved Fungicides May Be Easier on Environment
(Date:11/27/2015)... ... 27, 2015 , ... According to an article published November 13th ... in Washington D.C. revolved around the fact that proper dental care, both at-home and ... the link between periodontal disease (more commonly referred to as gum disease) and diabetes. ...
(Date:11/27/2015)... ... ... A team of Swiss doctors has released a report on mesothelioma relapse and ... findings on the website. Click here to read the details now. ... were treated with chemotherapy followed by EPP surgery. Among the 106 patients who relapsed, ...
(Date:11/27/2015)... ... 27, 2015 , ... The print component of “Supporting Our ... Dallas, New York, Minneapolis, South Florida, with a circulation of approximately 250,000 copies ... a vast social media strategy and across a network of top news sites ...
(Date:11/27/2015)... Wilmington, DE (PRWEB) , ... November 27, 2015 ... ... a member of the well-respected Microsoft Dynamics SL User Group (MSDSLUG). Recognized as ... is an independent group of Microsoft Dynamics SL software users, partners, industry experts ...
(Date:11/27/2015)... CA (PRWEB) , ... November 27, 2015 , ... ... on Accreditation of Allied Health Education Programs (CAAHEP) awarded accreditation to its Diagnostic Medical ... of CAAHEP accredited colleges, as only one of twelve colleges and universities in the ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... , November 26, 2015 ... the addition of the  "2016 Future ... European Therapeutic Drug Monitoring (TDM) Market: ... Intelligence, Emerging Opportunities"  report to their ... has announced the addition of the  ...
(Date:11/26/2015)... 2015 ... the  "2016 Future Horizons and Growth ... Marker Testing Market: Supplier Shares, Competitive ... offering.  --> ) ... "2016 Future Horizons and Growth Strategies ...
(Date:11/25/2015)... 2015  Linden Care, LLC, a retail specialty pharmacy ... patients suffering from chronic pain, said today that it ... Order (TRO) enjoining Express Scripts from unilaterally terminating the ... --> --> The company said ... options. --> --> ...
Breaking Medicine Technology: