Navigation Links
Diverse wheat tapped for antifungal genes
Date:4/1/2010

This release is available in Spanish.

Asian wheat may offer novel genes for shoring up the defenses of U.S. varieties against Fusarium graminearum fungi that cause Fusarium head blight (FHB) disease.

According to Agricultural Research Service (ARS) plant molecular biologist Guihua Bai, the FHB resistance found in today's U.S. wheat varieties is primarily based on the Chinese wheat variety Sumai 3 and a few other sources. But there's concern that FHB-causing species of F. graminearum will overcome these resistant sources.

In susceptible varieties, the fungus infects the wheat heads, causing kernels to shrivel up and turn chalky white. The fungus can also produce mycotoxins that reduce the kernels' value and quality, according to Bai, who works at the ARS Hard Winter Wheat Genetics Research Unit in Manhattan, Kan.

In collaboration with Kansas State University scientists, Bai has sought new sources of FHB resistance from exotic wheat lines collected from China, Korea and Japan. These lines include "landrace" populationsdomesticated plants that have changed very little since the advent of modern plant breeding.

Of 87 total Asian landrace accessions tested in greenhouse trials, 26 showed high levels of FHB resistance, Bai reports. Grain evaluations also revealed that 15 of them had exceptionally low levels of the mycotoxin deoxynivalenol, which is produced during disease development and can diminish the value of affected kernels as food or feed.

Six of the accessions possessed genes for different forms of FHB resistance known as types I, II and III. Significantly, some of the genes appear unrelated to Sumai 3, suggesting the Asian landraces could broaden the genetic pool of resistance now available for use in breeding U.S. wheat varieties. This, in turn, could help avoid repeat disasters such as the FHB epidemic that swept through the Great Plains from 1998 to 2000, costing America's wheat industry $2.7 billion in losses.


'/>"/>

Contact: Jan Suszkiw
Jan.Suszkiw@ars.usda.gov
301-504-1630
United States Department of Agriculture-Research, Education, and Economics
Source:Eurekalert

Related biology news :

1. Diverse genetic abnormalities lead to NF-κB activation in multiple myeloma
2. New keys to keeping a diverse planet
3. Scientists decode genomes of diverse TB isolates
4. DNA study unlocks mystery to diverse traits in dogs
5. Diverse landscapes are better: Policymakers urged to think broadly about biofuel crops
6. Diverse landscapes are better: Policymakers urged to think broadly about biofuel crops
7. New book plants seed for biodiverse food production
8. Research synthesis shines light on several management options after fires in diverse ecosystems
9. Scientists identify Ecuadors Yasuni National Park as one of most biodiverse places on earth
10. A wheat for all seasons -- and reasons
11. Building disease-beating wheat
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/7/2016)... , June 7, 2016  Syngrafii Inc. and ... business relationship that includes integrating Syngrafii,s patented LongPen™ ... project. This collaboration will result in greater convenience ... credit union, while maintaining existing document workflow and ... ...
(Date:6/1/2016)... YORK , June 1, 2016 ... Technology in Election Administration and Criminal Identification to Boost ... to a recently released TechSci Research report, " Global ... By Region, Competition Forecast and Opportunities, 2011 - 2021", ... 24.8 billion by 2021, on account of growing security ...
(Date:5/9/2016)... 2016 Elevay is currently known ... freedom for high net worth professionals seeking travel for ... connected world, there is still no substitute for a ... sealing your deal with a firm handshake. This is ... advantage of citizenship via investment programs like those offered ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... A person commits a crime, and the detective ... the criminal down. An outbreak of foodborne illness ... (FDA) uses DNA evidence to track down the bacteria that ... It,s not. The FDA has increasingly used a complex, cutting-edge ... illnesses. Put as simply as possible, whole genome sequencing is ...
(Date:6/23/2016)... MONICA, Calif. , June 23, 2016  The Prostate Cancer Foundation ... pioneer increasingly precise treatments and faster cures for prostate cancer. Members of the ... institutions across 15 countries. Read More About the Class ... ... ...
(Date:6/23/2016)... ... 2016 , ... Supplyframe, the Industry Network for electronics hardware ... . Located in Pasadena, Calif., the Design Lab’s mission is to bring together ... built and brought to market. , The Design Lab is Supplyframe’s physical representation ...
(Date:6/23/2016)... LOUISVILLE, Ky. , June 23, 2016 /PRNewswire/ ... from two Phase 1 clinical trials of its ... double-blind, placebo-controlled, single and multiple ascending dose studies ... and pharmacodynamics (PD) of subcutaneous injection in healthy ... APL-2 subcutaneously (SC) either as a single dose ...
Breaking Biology Technology: