Take-All Disease: New Insights into an Important Wheat Root Pathogen
Palma-Guerrero, J., Chancellor, T., Spong, J., Canning, G., Hammond, J., McMillan, V. E., & Hammond-Kosack, K. E. - Trends in Plant Science, 2021
The ancestral wheat species Triticum monococcum has been shown as a potential source of resistance genes against take-all. In addition, modern wheat cultivars show variation in their ability to build up inoculum, indicating that this trait is under genetic control. Different wheat cultivars can be used to manipulate the level of inoculum in the field and therefore the disease levels in subsequent years.
Recent discoveries on the avenacin synthesis pathway from oats, provide the potential for engineering this pathway into wheat to provide high level resistance to take-all.
The soil microbiome influences the three phases of disease development, and each phase can be modulated by host genotype.
Host induced gene silencing (HIGS) has been successfully used in wheat to silence a pathogen effector gene during root infection, showing its potential for functional validation of pathogen genes.
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