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:10/13/2015)... ... October 13, 2015 , ... NavaFit Inc. today announced the launch of its ... with, participate in local fitness & sporting events, and stay motivated. Users ... medical costs drive us to get more serious about fitness and wellness, individuals are ...
(Date:10/13/2015)... ... October 13, 2015 , ... ... Anik Singal's newly launched "Publish Academy" training course . Singal's new program, ... for enrollment today, and marketers around the Internet are weighing in with reviews. ...
(Date:10/13/2015)... CA (PRWEB) , ... October 13, 2015 , ... ... and workflow solutions, announced today their Title Sponsorship of Synergy 2015. The annual ... Henderson, NV at Green Valley Ranch and will unite customers, partners, WennSoft team ...
(Date:10/13/2015)... ... ... Scientists in Seattle and Vancouver compared the diagnostic value of lung fluid ... Mesothelioma has just posted an article on the new research. Click here to ... University of British Columbia found that certain genetic alterations were seen just as often ...
(Date:10/13/2015)... ... October 13, 2015 , ... ... of telemedicine programs in communities throughout Georgia, along with affiliate organizations, Alabama Partnership ... for their regional telehealth summits for Fall 2015. , Each of the ...
Breaking Medicine News(10 mins):
(Date:10/13/2015)... 9, 2015 Research and Markets ( ... Market by Types (Bacteria, Yeast, Mold, Others), Flavors (Herbs ... Others), & by Region - Forecasts to 2020" ... --> --> The global market ... years. In terms of value, the market is projected ...
(Date:10/13/2015)... -- anesthesia and respiratory devices market ... according to a new report by Grand View Research, ... to resolve various environmental and lifestyle induced respiratory disorders ... anesthesia and respiratory devices market is expected ... a new report by Grand View Research, Inc. Anesthesia ...
(Date:10/13/2015)... , Oct. 13, 2015   Happy ... direct-to-consumer laboratory home testing kit for breast ... technologies provide an unparalleled, detailed assessment of ... milk—fats, proteins, carbs and key vitamins—all charted ... for personal health tracking.  In addition, Happy Vitals ...
Breaking Medicine Technology: