Featured Research

from universities, journals, and other organizations

Eco-tilling Detects Herbicide Resistance Early

Date:
September 5, 2007
Source:
New South Wales Department of Primary Industries
Summary:
A new molecular tool to help farmers address one of the major threats to conventional agricultural practices -- herbicide resistance -- has just been developed. More than 305 types of weed in more than 50 countries have been reported to be resistant to at least one herbicide, and an increasing number of weeds owe their success to their genetic diversity. Scientists say techniques are needed to detect mutations when they first occur, so farmers can test for herbicide resistance in the field and manage weeds accordingly.

DPI molecular biologist, Dr Mui-Keng Tan, together with a team of researchers from Japan, has developed ‘ecotilling’ - a quick, cheap and reliable means of detecting early signs of herbicide resistance in weeds.
Credit: Image courtesy of New South Wales Department of Primary Industries

A new molecular tool developed by Australian and Japanese researchers is expected to help farmers address what has become one of the major threats to conventional agricultural practices - herbicide resistance.

Related Articles


More than 305 types of weed in more than 50 countries have been reported to be resistant to at least one herbicide, and an increasing number of weeds owe their success to their genetic diversity.

Scientists say techniques are needed to detect mutations when they first occur, so farmers can test for herbicide resistance in the field and manage weeds accordingly.

NSW Department of Primary Industries (DPI) molecular biologist,Dr Mui-Keng Tan, together with a team of researchers from Japan, investigated a technique called ecotilling and found it offers a quick, cheap and reliable means of detecting early signs of herbicide resistance in weeds.

Unlike the traditional molecular approach, eco-tilling uses reverse genetics. Genes are not fully sequenced; instead, mutations in single molecules that make up genes are identified purely on the basis of their position in the genome.

Dr Tan said new mutations can be detected and known ones can be screened for a fraction of the cost of alternative genetic methods.

This makes it a powerful, low cost and high throughput alternative to full sequencing.

Dr Tan has been investigating the technique with Dr Guang-Xi Wang from Kyoto University, who was funded by the Grains Research and Development Corporation to collaborate with Dr Tan at DPI’s Elizabeth Macarthur Agricultural Institute at Camden.

She says the use of the eco-tilling technique to test for resistance could help farmers to manage herbicide use in crop rotations more economically and effectively.

Dr Tan’s research has focused on herbicide resistance in two oft he most significant weeds affecting Australian cropping systems -- wild oats and rye grass -- and to together with Dr Wang she also examined weeds in rice fields in Japan.

Dr Tan said the every weed-herbicide system is specific.

"The ecotilling technique can be applied on any particular system, pending availability of molecular data on the target genes of the herbicides," she said.

An article on the research in Japan was published recently in the journal Pesticide Biochemistry and Physiology.


Story Source:

The above story is based on materials provided by New South Wales Department of Primary Industries. Note: Materials may be edited for content and length.


Cite This Page:

New South Wales Department of Primary Industries. "Eco-tilling Detects Herbicide Resistance Early." ScienceDaily. ScienceDaily, 5 September 2007. <www.sciencedaily.com/releases/2007/08/070830090533.htm>.
New South Wales Department of Primary Industries. (2007, September 5). Eco-tilling Detects Herbicide Resistance Early. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2007/08/070830090533.htm
New South Wales Department of Primary Industries. "Eco-tilling Detects Herbicide Resistance Early." ScienceDaily. www.sciencedaily.com/releases/2007/08/070830090533.htm (accessed October 31, 2014).

Share This



More Plants & Animals News

Friday, October 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Watch Baby Goose Survive A 400-Foot Cliff Dive

Watch Baby Goose Survive A 400-Foot Cliff Dive

Buzz60 (Oct. 31, 2014) For its nature series Life Story, the BBC profiled the barnacle goose, whose chicks must make a daredevil 400-foot cliff dive from their nests to find food. Jen Markham has the astonishing video. Video provided by Buzz60
Powered by NewsLook.com
World's Salamanders At Risk From Flesh-Eating Fungus

World's Salamanders At Risk From Flesh-Eating Fungus

Newsy (Oct. 31, 2014) The import of salamanders around the globe is thought to be contributing to the spread of a deadly fungus. Video provided by Newsy
Powered by NewsLook.com
Alcoholic Drinks In The E.U. Could Get Calorie Labels

Alcoholic Drinks In The E.U. Could Get Calorie Labels

Newsy (Oct. 31, 2014) A health group in the United Kingdom has called for mandatory calorie labels on alcoholic beverages in the European Union. Video provided by Newsy
Powered by NewsLook.com
Malaria Threat in Liberia as Fight Against Ebola Rages

Malaria Threat in Liberia as Fight Against Ebola Rages

AFP (Oct. 31, 2014) Focus on treating the Ebola epidemic in Liberia means that treatment for malaria, itself a killer, is hard to come by. MSF are now undertaking the mass distribution of antimalarials in Monrovia. Duration: 00:38 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins