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:11/19/2015)... YORK , Nov. 19, 2015  Although some ... market is dominated by a few companies, according to ... companies own 51% of the market share of the ... The World Market for Molecular Diagnostic s ... "The market is still controlled by one company ...
(Date:11/17/2015)... LIVERMORE, Calif. , Nov. 17, 2015  Vigilant ... has joined its Board of Directors. ... Vigilant,s Board after recently retiring from the partnership at ... owning 107 companies with over $140 Billion in revenue.  ... performance improvement across all the TPG companies, from 1997 ...
(Date:11/12/2015)... , Nov. 11, 2015   Growing need ... analytical tools has been paving the way for ... determination of discrete analytes in clinical, agricultural, environmental, ... being predominantly used in medical applications, however, their ... sectors due to continuous emphasis on improving product ...
Breaking Biology News(10 mins):
(Date:11/27/2015)... (PRWEB) , ... November 27, 2015 , ... ... Program that includes over 2,000 technical presentations offered in symposia, oral sessions, ... and applied spectroscopy, covers a wide range of applications such as, but not ...
(Date:11/25/2015)... ANNAPOLIS, Md. , Nov. 25, 2015  PharmAthene, ... of Directors has adopted a stockholder rights plan (Rights ... its net operating loss carryforwards (NOLs) under Section 382 ... --> --> PharmAthene,s use of its ... an "ownership change" as defined in Section 382 of ...
(Date:11/25/2015)... QUEBEC CITY , Nov. 25, 2015 /PRNewswire/ ... "Company"), affirms that its business and prospects remain ... , Zoptrex™ (zoptarelin doxorubicin) recently received DSMB ... program to completion following review of the final ... met Phase 2 Primary Endpoint in men with ...
(Date:11/24/2015)... 24, 2015  Asia-Pacific (APAC) holds the third-largest ... market. The trend of outsourcing to low-cost locations ... higher volume share for the region in the ... margins in the CRO industry will improve. ... ( ), finds that the market earned ...
Breaking Biology Technology: