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Wheat disease-resistance gene identified, potential to save billions

Date:
November 10, 2015
Source:
University of Sydney
Summary:
An international group of scientists has discovered a gene that can prevent some of the most significant wheat diseases -- creating the potential to combat food security for this staple and save billions of dollars in lost production each year.
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Plant Breeding Institute's Principal Research Fellow, Associate Professor Harbans Bariana, is demonstrating the issue of wheat rust.
Credit: University of Sydney

A gene that can prevent some of the most important wheat diseases has been identified--creating the potential to save more than a billion dollars in lost production in Australia alone each year.

In a global collaboration including the University of Sydney's Plant Breeding Institute (PBI), the CSIRO, CIMMYT (Mexico), University of Newcastle, Chinese Academy of Sciences and the Norwegian University of Life Sciences, the gene Lr67 has been identified as providing resistance to three of the most important wheat rust diseases, along with powdery mildew, a significant disease in Norway.

The findings, published in Nature Genetics, should have wide-reaching ramifications, with wheat already providing a fifth of global caloric intake and set to spike in the next 50 years.

The University of Sydney has played a crucial role in this research through the Grains Research and Development Corporation (GRDC)-funded Australian Cereal Rust Control Program at PBI, which leads rust research to cater for the needs of Australian cereal breeding companies to release disease resistant varieties for farmers. The CSIRO and the University of Newcastle contributed molecular genetics skills to clone this naturally occurring gene that provides resistance to multiple pathogens of wheat.

Principal research fellow at the PBI, Associate Professor Harbans Bariana, said rust diseases are among the most significant constraints to global wheat production.

"Estimates put potential losses from wheat rust diseases in Australia alone at more than one-and-a-half billion dollars each year,"

Associate Professor Bariana said. "The transfer of the gene Lr67 into modern wheat cultivars is already in progress at the University of Sydney component of the Australian Cereal Rust Control Program.

"Its transfer to future wheat varieties through marker assisted selection (MAS) based on this work will increase diversity for resistance," he said.


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Materials provided by University of Sydney. Note: Content may be edited for style and length.


Journal Reference:

  1. John W Moore, Sybil Herrera-Foessel, Caixia Lan, Wendelin Schnippenkoetter, Michael Ayliffe, Julio Huerta-Espino, Morten Lillemo, Libby Viccars, Ricky Milne, Sambasivam Periyannan, Xiuying Kong, Wolfgang Spielmeyer, Mark Talbot, Harbans Bariana, John W Patrick, Peter Dodds, Ravi Singh, Evans Lagudah. A recently evolved hexose transporter variant confers resistance to multiple pathogens in wheat. Nature Genetics, 2015; DOI: 10.1038/ng.3439

Cite This Page:

University of Sydney. "Wheat disease-resistance gene identified, potential to save billions." ScienceDaily. ScienceDaily, 10 November 2015. <www.sciencedaily.com/releases/2015/11/151110094034.htm>.
University of Sydney. (2015, November 10). Wheat disease-resistance gene identified, potential to save billions. ScienceDaily. Retrieved May 29, 2017 from www.sciencedaily.com/releases/2015/11/151110094034.htm
University of Sydney. "Wheat disease-resistance gene identified, potential to save billions." ScienceDaily. www.sciencedaily.com/releases/2015/11/151110094034.htm (accessed May 29, 2017).

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