Navigation Links
Elusive rust resistance genes located

The discovery of a DNA marker for two key rust resistance genes is enabling plant breeders around the world to breed more effective rust resistant wheat varieties.

The genes, Lr34 and Yr18 are inherited together and provide wheat plants with improved protection against leaf rust and stripe rust ?two major diseases of wheat in Australia and worldwide.

CSIRO Plant Industry scientist, Dr Evans Lagudah, says various types of rust resistance have been bred into Australian varieties but work against a specific rust species and in some cases are only effective against a limited range of rust strains.

"We have identified a ‘DNA marker?that is 99 per cent effective in flagging the presence of Lr34 and Yr18, which provide resistance against different species and strains of rust," Dr Lagudah says.

"This means that breeders can track the presence of this rust resistance through a simple DNA test. If the marker is present then it’s almost guaranteed Lr34 / Yr18 will be too."

Plant breeders have long recognised the usefulness of Lr34 / Yr18, which work together with other rust resistance genes to boost the plants?capacity to defend itself.

Wheat plants that contain the Lr34 / Yr18 combination of genes also experience slower rates of rust infection. This prevents widespread and rapid increase of rust spores reducing the potential for disease epidemics throughout the crop.

"Up until now it has been difficult to track Lr34 / Yr18 in wheat because of the masking effect of other resistance genes," Dr Lagudah says.

"In addition, tests for Lr34 / Yr18 were slow and could only be done once per season and on adult plants growing in the paddock.

"Using the marker technology breeders can now quickly and easily test seedlings for the presence of Lr34 / Yr18, to establish known and unknown genes, and ideally combine different sources of resistance to speed up the delivery of new rust resistant wheat varieties."

The marker has proven effective in a range of wheats from different backgrounds including from Australia, India, China, North America and the major wheat research centre, CIMMYT.

Breeders in Australia and across the world are now using the marker so that the durable rust resistance offered by Lr34 / Yr18 can be incorporated into locally adapted wheat varieties.
'"/>

Source:CSIRO Australia


Related biology news :

1. Elusive HIV shape change revealed; Key clue to how virus infects cells
2. Elusive salamanders have role in developing new sampling models
3. Study identifies predictors of HIV drug resistance in patients beginning triple therapy
4. Researchers make gains in understanding antibiotic resistance
5. MUHC scientists describe genetic resistance to rampant virus
6. New polysaccharide may help combat multidrug resistance in cancer
7. New book explains antibiotic resistance for a broad audience
8. Insects develop resistance to engineered crops
9. Retroviral resistance gene found
10. Drug resistance testing in treatment-naive HIV patients is cost-effective
11. Researchers use RNAi libraries to identify regulators of apoptosis and chemoresistance

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/29/2017)... 2017  higi, the health IT company that operates ... America , today announced a Series B investment ... EveryMove. The new investment and acquisition accelerates higi,s strategy ... transform population health activities through the collection and workflow ... higi collects and secures data today on behalf of ...
(Date:3/27/2017)... , March 27, 2017  Catholic Health Services ... Management Systems Society (HIMSS) Analytics for achieving Stage ... Model sm . In addition, CHS previously earned ... hospitals using an electronic medical record (EMR). ... high level of EMR usage in an outpatient ...
(Date:3/24/2017)... DUBLIN , Mar 24, 2017 Research ... Vehicle Access System Market Analysis & Trends - Industry Forecast to ... ... poised to grow at a CAGR of around 15.1% over the ... This industry report analyzes the market estimates and forecasts for ...
Breaking Biology News(10 mins):
(Date:5/18/2017)... (PRWEB) , ... May 18, 2017 , ... ... activities. The Tapas Cooking Challenge is a two-hour team-building package designed for ... menu created by Chef Jodi Abel, which include items, such as Blackened Shrimp ...
(Date:5/18/2017)... , ... May 17, 2017 , ... ... and business process optimization firm for the life sciences and healthcare industries, is ... UDIs and Traceability for Medical Devices conference in Brussels, Belgium. , Crowley played ...
(Date:5/16/2017)... , ... May 16, 2017 , ... ... announced its global Genedata Screener User Group Meetings, which will be ... the opportunity to share best practices in screening data analysis and learn about ...
(Date:5/16/2017)... ... (PRWEB) May 16, 2017 , ... ... Association of Orthopaedic Surgeons (CAOS), long-standing development partners Invibio Biomaterial Solutions, UK, ... spine surgery workshop to help expand knowledge of the implantation of Double ...
Breaking Biology Technology: