Featured Research

from universities, journals, and other organizations

Beneficial Fungal Strains Fight Harmful Ones In Corn

Date:
April 1, 2005
Source:
USDA / Agricultural Research Service
Summary:
Nontoxic strains of a fungus have been developed by the Agricultural Research Service (ARS) to control toxins produced by a different strain of the same fungus in corn.

Corn.
Credit: Photo by Doug Wilson

Nontoxic strains of a fungus have been developed by the Agricultural Research Service (ARS) to control toxins produced by a different strain of the same fungus in corn.

Related Articles


Aflatoxin is a naturally occurring mycotoxin produced by the fungus Aspergillus parasiticus and the more common A. flavus, which is most often found when certain grains are grown under stressful conditions, such as drought. Aflatoxin occurs in contaminated agricultural commodities, such as corn, peanuts, cotton seed and nuts, and may also be found in soil, decaying vegetation, hay and stored grains during moist and hot conditions.

ARS scientists developed two fungal strains that don't produce these toxins in corn crops. The two nontoxic strains of A. flavus, called CT3 and K49, can be used to competitively displace, or out-compete, the pest strain, according to Hamed K. Abbas, a plant pathologist with the Crop Genetics and Production Research Unit in Stoneville, Miss.

Aflatoxins are a potential danger to food and a significant threat to feed quality. The threat of aflatoxin contamination limits corn production in the Southern United States. Hot, dry conditions are particularly conducive to fungal growth and aflatoxin production. Aflatoxin outbreaks devalue the corn, sometimes making it worthless and costing corn growers hundreds of millions of dollars.

Using the beneficial fungus to treat soil that naturally contains high levels of toxin-producing Aspergillus reduced contamination of corn by 60 to 85 percent. When a nontoxic fungal mixture was mixed with toxin-producing A. flavus and used to treat soil, corn had 65 to 94 percent less aflatoxin, compared to corn grown in soil treated with the toxin-producing fungal strain alone.

ARS has filed a patent application on the nontoxic fungal strains. Abbas developed the strains during four years of field trails with Robert M. Zablotowicz, a soil scientist located in Stoneville.

Further trials are needed to demonstrate that the fungal mixtures are effective under varying conditions naturally found in southern corn production. Additional research will determine the most effective and consistent application methods.

ARS is the U.S. Department of Agriculture's chief scientific research agency.


Story Source:

The above story is based on materials provided by USDA / Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA / Agricultural Research Service. "Beneficial Fungal Strains Fight Harmful Ones In Corn." ScienceDaily. ScienceDaily, 1 April 2005. <www.sciencedaily.com/releases/2005/03/050325184854.htm>.
USDA / Agricultural Research Service. (2005, April 1). Beneficial Fungal Strains Fight Harmful Ones In Corn. ScienceDaily. Retrieved November 23, 2014 from www.sciencedaily.com/releases/2005/03/050325184854.htm
USDA / Agricultural Research Service. "Beneficial Fungal Strains Fight Harmful Ones In Corn." ScienceDaily. www.sciencedaily.com/releases/2005/03/050325184854.htm (accessed November 23, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Sunday, November 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Anglerfish Rarely Seen In Its Habitat Will Haunt You

Anglerfish Rarely Seen In Its Habitat Will Haunt You

Newsy (Nov. 22, 2014) For the first time Monterey Bay Aquarium recorded a video of the elusive, creepy and rarely seen anglerfish. Video provided by Newsy
Powered by NewsLook.com
Birds Around the World Take Flight

Birds Around the World Take Flight

Reuters - Light News Video Online (Nov. 22, 2014) An imperial eagle equipped with a camera spreads its wings over London. It's just one of the many birds making headlines in this week's "animal roundup". Jillian Kitchener reports. Video provided by Reuters
Powered by NewsLook.com
Could Your Genes Be The Reason You're Single?

Could Your Genes Be The Reason You're Single?

Newsy (Nov. 21, 2014) Researchers in Beijing discovered a gene called 5-HTA1, and carriers are reportedly 20 percent more likely to be single. Video provided by Newsy
Powered by NewsLook.com
Raw: Baby Okapi Born at Houston Zoo

Raw: Baby Okapi Born at Houston Zoo

AP (Nov. 20, 2014) The Houston Zoo released video of a male baby okapi. Okapis, also known as the "forest giraffe", are native to the Democratic Republic of the Congo in Central Africa. Video is mute from source. (Nov. 20) Video provided by AP
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