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The Hardy Wild Grass Could Help Save the World's Bread
Posted by: Prof. Dr. M. Raupp (IP Logged)
Date: April 01, 2022 03:14PM

An international team of researchers led by the John Innes Centre, The
Sainsbury Laboratory, and the University of Minnesota have identified
the stem rust resistance genefrom a wild goat grass species.

The researchers found the gene in/Aegilops sharonensis/, a wild relative
of wheat found in Israel and southern Lebanon. Using bioinformatic
advantages, the research team developed the first accurate genomemap
of/A. sharonensis/. Using the genetic map and Mutant Hunter, a search
tool technique, the team scanned the genome for mutations that were
different in plants that were immune to stem rust, a disease that has
troubled farmers for millennia.

They identified a candidate gene, which they isolated and transferred
into a susceptible plant, where it conferred strong protection against
all tested strains of the wheat stem rust fungus,/Puccinia graminis/f.
sp./tritici/. The experiments showed that the Sr62 gene encodes a
molecule called a tandem protein kinase. The researchers plan to include
the new gene in a stack of genes ?? bred into commonly used wheat
varieties ?? usinggenetic modification technology. They predict that more
resistance genes will be identified in and cloned from populations of/A.
sharonensis/and other wild grasses using their methods of gene discovery
and deployment.

The hardy wild grass that could save our bread | John Innes Centre
(jic.ac.uk)
[www.jic.ac.uk]



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