Welcome To Website IAS

Hot news

Independence Award

- First Rank - Second Rank - Third Rank

Labour Award

- First Rank - Second Rank -Third Rank

National Award

 - Study on food stuff for animal(2005)

 - Study on rice breeding for export and domestic consumption(2005)


- Hybrid Maize by Single Cross V2002 (2003)

- Tomato Grafting to Manage Ralstonia Disease(2005)

- Cassava variety KM140(2010)

Website links
Vietnamese calendar
Visitors summary
 Curently online :  1
 Total visitors :  4165585

Scientists Uncover Secrets of Wheat Killer Ug99
Monday, 2019/11/18 | 07:53:28

Figure: Wheat stem rust. Photo Source: Dr. Zacharias Pretorius


A group of researchers from Australia, the United States, and South Africa has uncovered the 20-year-old mystery surrounding the origins of the world's deadliest strain of wheat stem rust which threatens global food security. Their research, published in Nature Communications, reveals that the devastating Ug99 strain of the wheat stem rust fungus was created when different rust strains fused to create a new hybrid strain through the process called somatic hybridization. This process enables the fungi to merge their cells together and exchange genetic material without sexual reproduction.


The study found that half of Ug99's material came from a strain that has been in southern Africa for more than 100 years and also occurs in Australia. It shows that other crop-destroying rust strains could hybridize in other parts of the world, and evidence of this was found in the study. This means that Ug99 could once again exchange genetic material with other pathogens to create a new enemy.


Earlier this year, the Commonwealth Scientific and Industrial Research Organisation (CSIRO), the University of Minnesota, and the 2Blades Foundation achieved good results in wheat resistance by stacking five resistance genes into one wheat plant to fight wheat stem rust. This is the result of a collaboration between scientists from CSIRO, the University of Minnesota, University of the Free State, and Australian National University.


Dr. Melania Figueroa's group worked on the sequence of Ug99, while the team led by Dr. Peter Dodds sequenced Pgt 21, a rust strain that was first seen in South Africa in the 1920s and believed to have been carried to Australia in the 1950s by wind currents. The groups found that the two pathogens share an almost identical nucleus and therefore half of their DNA. "This discovery will make it possible to develop better methods to screen for varieties with strong resistance to disease," Dr. Figueroa said.


For more details, read the CSIRO news release.

Back      Print      View: 18

[ Other News ]___________________________________________________
  • Egypt Holds Workshop on New Biotech Applications
  • UN Agencies Urge Transformation of Food Systems
  • Taiwan strongly supports management of brown planthopper—a major threat to rice production
  • IRRI Director General enjoins ASEAN states to invest in science for global food security
  • Rabies: Educate, vaccinate and eliminate
  • “As a wife I will help, manage, and love”: The value of qualitative research in understanding land tenure and gender in Ghana
  • CIP Director General Wells Reflects on CIP’s 45th Anniversary
  • Setting the record straight on oil palm and peat in SE Asia
  • Why insect pests love monocultures, and how plant diversity could change that
  • Researchers Modify Yeast to Show How Plants Respond to Auxin
  • GM Maize MIR162 Harvested in Large Scale Field Trial in Vinh Phuc, Vietnam
  • Conference Tackles Legal Obligations and Compensation on Biosafety Regulations in Vietnam
  • Iloilo Stakeholders Informed about New Biosafety Regulations in PH
  • Global wheat and rice harvests poised to set new record
  • GM Maize Harvested in Vietnam Field Trial Sites
  • New label for mountain products puts premium on biological and cultural diversity
  • The Nobel Prize in Physiology or Medicine 2016
  • Shalabh Dixit: The link between rice genes and rice farmers
  • People need affordable food, but prices must provide decent livelihoods for small-scale family farmers
  • GM Seeds Market Growth to Increase through 2020 Due to Rise in Biofuels Use
Designed & Powered by WEBSO CO.,LTD