new rust pathotype

The shift in a variety's response to rust is actually caused by a change in the pathogen that causes the disease... Graphic representing the extent to which a variety's response to rust disease changes when a new pathotype appears Figure 1 The extent to which a variety's response to rust disease changes when a new pathotype appears depends on the nature (ASR or APR) and number of resistance genes it carries... Having both the genes means a pathotypic change can result in a slight increase in susceptibility, which occurs when the ASR gene is overcome by a new pathotype, but the APR gene is still effective in providing back-up resistance ( Figure 1 )...

Every year since 1919 staff at the University of Sydney have monitored Australian cereal rust populations using samples of rusted plant material collected throughout Australia... The most likely explanation is that the new pathotype has come to Australia from another wheat-growing region... In September 2014 the new pathotype was found in leaf rust samples collected from Mount Hope on the Eyre Peninsula ( Wyalkatchem ) and Moonta ( Axe ) and Port Broughton ( Corack ) on the Yorke Peninsula...

Exotic rust find in SA.. Every year since 1919 staff at the University of Sydney have monitored Australian cereal rust populations using samples of rusted plant material collected throughout Australia... In September 2014 the new pathotype was found in leaf rust samples collected from Mount Hope on the Eyre Peninsula ( Wyalkatchem ) and Moonta ( Axe ) and Port Broughton ( Corack ) on the Yorke Peninsula...