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Mutated BRI1 in "uzu" barley can provide disease resistance  


September 3, 2014

Source: Crop Biotech Update

Brassinosteroid hormones regulate many aspects of plant growth and development with the membrane receptor BRI1 as the central player in the signaling cascade. A team of researchers led by Shahin S. Ali of the University College of Dublin in Ireland are studying the semi-dwarf "uzu" barley, which carries a mutation in BRI1 known for its positive contribution to yield and lodging resistance.

The "uzu" barley exhibited enhanced resistance to a wide range of pathogens due to a combination of pre-formed and inducible defense responses. Gene expression studies revealed that the uzu barley has a repressed brassinosteroid signaling. Reduction of BRI1 RNA levels compromised uzu's disease resistance.

These suggest that the pathogen resistance of "uzu" may be due to the possible role of BRI1 on a plant defense pathway or the indirect effect of repressed brassinosteroid signaling.

For more information, feel free to visit: http://www.biomedcentral.com/content/pdf/s12870-014-0227-1.pdf



More solutions from: University College Dublin


Website: http://www.ucd.ie

Published: September 4, 2014


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