Navigation Links
ARS scientists turn to a wild oat to combat crown rust
Date:2/4/2010

This release is available in Spanish.

Agricultural Research Service (ARS) scientists are tapping into the DNA of a wild oat, considered by some to be a noxious weed, to see if it can help combat crown rust, the most damaging fungal disease of oats worldwide.

Crown rust reduces oat yields up to 40 percent and shows a remarkable ability to adapt to varieties bred to genetically resist it. ARS researchers and colleagues have inserted individual resistance genes into oat varieties that produce proteins believed to recognize strains of crown rust and trigger a defense response against them. "Multiline" cultivars with several resistance genes also have been developed.

Crown rust is caused by Puccinia coronata, a fungus that reproduces both sexually and asexually and has enough genetic flexibility to overcome resistance genes, usually in about five years, according to Martin L. Carson, research leader at the ARS Cereal Disease Laboratory in St. Paul, Minn. His analysis also shows crown rust is increasing in virulence throughout North America.

Carson has turned to a wild variety, Avena barbata, for new genes with effective resistance. The slender oat, listed as a noxious weed in Missouri and classified as moderately invasive in California, grows wild in South Asia, much of Europe and around the Mediterranean region.

Carson inoculated A. barbata seedlings with crown rust. After several crosses, he found seedlings highly resistant to a variety of crown rust strains. In ongoing studies, he is crossing them with the domestic oat, A. sativa, to try to develop the right blend of resistance and desirable traits, such as high yield and drought tolerance. The goal is new plant lines that will effectively fight off crown rust for many years.

The research, which supports the U.S. Department of Agriculture (USDA) priority of promoting international food security, was published in the journal Plant Disease.


'/>"/>

Contact: Dennis O'Brien
Dennis.Obrien@ars.usda.gov
301-504-1624
United States Department of Agriculture-Research, Education, and Economics
Source:Eurekalert

Related biology news :

1. Scientists find quantum mechanics at work in photosynthesis
2. Scripps Research scientists find two compounds that lay the foundation for a new class of AIDS drug
3. Humble garden pea helps Kew scientists develop cool, noninvasive diagnostic test of seed quality
4. Scripps Research scientists create new way to screen libraries of 10 million or more compounds
5. Scientists and cast of thousands swarm stage in Europe
6. Damon Runyon Cancer Research Foundation awards prestigious fellowships to 11 top young scientists
7. Scientists using X-ray vision to produce more nutritious flour
8. Scientists identify Ecuadors Yasuni National Park as one of most biodiverse places on earth
9. Scientists hope to end sleeping sickness by making parasite that causes it self-destruct
10. CSHL scientists use next-gen sequencing to rapidly discover genetic cause of devastating disorder
11. UW-Madison scientists create super-strong collagen
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/11/2016)... -- --> --> ... Market by Technology (Pattern Recognition), by Component (Hardware, Software, ... (On-Premises and Cloud), by Industry Vertical and by Region ... global market is expected to grow from USD 12.49 ... at a CAGR of 19.1%. , ...
(Date:3/9/2016)... 9, 2016 This BCC Research report provides ... the RNA Sequencing (RNA Seq) market for the years ... tools and reagents, data analysis, and services. ... the RNA-Sequencing market such as RNA-Sequencing tools and reagents, ... factors affecting each segment and forecast their market growth, ...
(Date:3/8/2016)... March 8, 2016   Valencell , the ... announced it has secured $11M in Series D ... a new venture fund being launched by UAE-based ... from existing investors TDF Ventures and WSJ Joshua ... continue its triple-digit growth and accelerate its pioneering ...
Breaking Biology News(10 mins):
(Date:5/20/2016)... CA (PRWEB) , ... May 20, 2016 , ... The ... 10 of its most experienced veterinary clients have treated over 100 of their own ... edge technology to provide the highest level of care for their patients. , ...
(Date:5/19/2016)... May 19, 2016  AdvancedFlow Systems Inc. (AFS), ... based out of Maple Ridge, British ... to its existing portfolio of contract manufacturing clients ... along with its sister companies Surround Technologies (STI) ... integrated industrial group that specializes in providing contract ...
(Date:5/18/2016)... Calif. (PRWEB) , ... May 18, 2016 , ... ... awarded the Luis Villalobos Award to Cognition Therapeutics at the annual ACA Summit last ... company that is financed by one of ACA’s member angel groups. It is the ...
(Date:5/18/2016)... , ... May 18, 2016 , ... The Academy of ... now celebrating its dream of reaching a total of $1 million in awarded scholarships. ... to 10 high school graduates from across the nation has helped bring the total ...
Breaking Biology Technology: