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 :  2
 Total visitors :  6729264

KAUST Researchers Clone Wheat Disease Resistance Genes
Monday, 2023/06/05 | 08:18:18

ISAAA May 31, 2023

Figure: From left: Professor Brande Wulff, Guotai Yu, Yajun Wang, and Professor Simon Krattinger collaborated to reveal new insights into wheat rust resistance. Photo Source: KAUST; Anastasia Serin


Researchers from the King Abdullah University of Science and Technology (KAUST) have cloned the wheat rust resistance genes Lr9 and Sr43 and identified that they encode unusual kinase fusion proteins, providing new options for addressing disease resistance in bread wheat.


Wild relatives of wheat are a reservoir of genetic diversity for crop improvement. The Lr9 leaf rust resistance gene was originally identified in a wild goatgrass (Aegilops umbellulata) while the stem rust resistance gene Sr43 came from the wild tall wheatgrass (Thinopyrum elongatum). Almost 40 percent of the resistance genes found in bread wheat today were crossed into wheat from wild relatives. Wheat cultivars carrying Lr9 were released in the late 1960s, and Lr9 is still effective in many wheat-growing areas. However, researchers say that this type of breeding can lead to co-introduction of unfavorable versions of other genes from the wild relative, known as “linkage drag.”


KAUST researcher Yajun Wang sequenced the genomes of an Lr9-containing bread wheat cultivar and Ae. umbellulata. The researchers found that Lr9 had been introduced into wheat along with about 536 other genes from Ae. umbellulata. The process also led to the deletion of a small fragment of the wheat genome containing 87 genes.


Two teams led by Simon Krattinger and Brande Wulff cloned Lr9 and Sr43, respectively, by generating mutants to compare their sequence to the parent genomes. According to the researchers, the cloned genes can now be used to engineer bread wheat lines without linkage drag and the genes can be combined with other cloned rust resistance genes into multigene stacks for superior and more durable resistance. Cloning Lr9 and Sr43 also revealed that the genes encode unusual kinase fusion proteins which are prominent new players involved in disease resistance in wheat and barley.


For more details, read the article in KAUST Discovery.


Back      Print      View: 74

[ Other News ]___________________________________________________
  • Beyond genes: Protein atlas scores nitrogen fixing duet
  • 2016 Borlaug CAST Communication Award Goes to Dr. Kevin Folta
  • FAO and NEPAD team up to boost rural youth employment in Benin, Cameroon, Malawi and Niger
  • Timely seed distributions in Ethiopia boost crop yields, strengthen communities’ resilience
  • Parliaments must work together in the final stretch against hunger
  • Empowering women farmers in the polder communities of Bangladesh
  • Depression: let’s talk
  • As APEC Concludes, CIP’s Food Security and Climate Smart Agriculture on Full Display
  • CIAT directly engages with the European Cocoa Industry
  • Breeding tool plays a key role in program planning
  • FAO: Transform Agriculture to Address Global Challenges
  • Uganda Holds Banana Research Training for African Scientists and Biotechnology Regulators
  • US Congress Ratifies Historic Global Food Security Treaty
  • Fruit Fly`s Genetic Code Revealed
  • Seminar at EU Parliament Tackles GM Crops Concerns
  • JICA and IRRI ignites a “seed revolution” for African and Asian farmers
  • OsABCG26 Vital in Anther Cuticle and Pollen Exine Formation in Rice
  • Akira Tanaka, IRRI’s first physiologist, passes away
  • WHO calls for immediate safe evacuation of the sick and wounded from conflict areas
  • Farmer Field School in Tonga continues to break new ground in the Pacific for training young farmers


Designed & Powered by WEBSO CO.,LTD