Navigation Links
Diverse wheat tapped for antifungal genes

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
United States Department of Agriculture-Research, Education, and Economics

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:
(Date:5/16/2017)... DALLAS , May 16, 2017   ... for health organizations, and MD EMR Systems ... certified development partner for GE, have established a ... Patient Portal product and the GE Centricity™ products, ... Centricity EMR. These new integrations ...
(Date:4/19/2017)... 2017 The global military biometrics ... marked by the presence of several large global players. ... five major players - 3M Cogent, NEC Corporation, M2SYS ... nearly 61% of the global military biometric market in ... global military biometrics market boast global presence, which has ...
(Date:4/13/2017)... , April 13, 2017 UBM,s Advanced ... will feature emerging and evolving technology through ... Innovation Summits will run alongside the expo portion of ... sessions, panels and demonstrations focused on trending topics within ... advanced design and manufacturing event will take place June ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... a United States multicenter, prospective clinical study that demonstrates the accuracy of ... capable of identifying clinically significant acute bacterial and viral respiratory tract infections ...
(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... ... partners with the pharmaceutical and biotechnology industries to improve patient outcomes and quality ... Several trends in analytical testing are being attributed to new regulatory requirements for ...
(Date:10/11/2017)... ... October 11, 2017 , ... At ... Purple announced Dr. Suneel I. Sheikh, the co-founder, CEO and chief research scientist ... has been selected for membership in ARCS Alumni Hall of Fame . ...
(Date:10/11/2017)... ... October 11, 2017 , ... Personal eye wash is a basic first aid supply ... a time. So which eye do you rinse first if a dangerous substance enters both ... Duo Eye Wash with its unique dual eye piece. , “Whether its dirt and ...
Breaking Biology Technology: