YrU1 is a protein that confers effective resistance to stripe rust
fungus. YrU1 has been cloned in bread wheat, but the molecular mechanism
and components causing the YrU1-controlled resistance remain unclear.
FAFU researchers found that the transcript level of/TuRLK1,/which codes
for a novel leucine-rich repeat receptor-like kinase, was up-regulated
after inoculation with stripe rust fungus in the presence of YrU1.
Transient expression of/TuRLK1/induced hypersensitive cell death
response in benth leaves. When/TuRLK1/was silenced using a system that
contains YrU1, the resistance against stripe rust was compromised. This
implies that/TuRLK1/is necessary for YrU1-activated plant immunity.
Overexpression of/TuRLK1/was also found to improve powdery mildew
resistance in bread wheat and Arabidopsis.