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new leaf rust pathotype

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Catalogue: Ground Cover
Researchers have detected a new leaf rust pathotype on samples of the Naparoo wheat variety collected in northern New South Wales in early August... As a consequence of the discovery, Professor Park has urged grain growers to be vigilant in checking their crops for leaf rust, and submit plant samples they suspect are infected with the disease for testing... He says the new pathotype found near Gragin and Graman, east of Moree, is a mutation of an existing pathotype that has added virulence for the leaf rust resistance gene, Lr24...
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Catalogue: Ground Cover
Researchers have detected a new leaf rust pathotype on samples of the Naparoo wheat variety collected in northern New South Wales in early August... As a consequence of the discovery, Professor Park has urged grain growers to be vigilant in checking their crops for leaf rust, and submit plant samples they suspect are infected with the disease for testing... "It has since become widespread in Victoria, southern and northern NSW, South Australia and Tasmania, providing an indication of the rate the new pathotype could spread its range," he says...
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Catalogue: GRDC Media
An eastern Australian wheat leaf rust pathotype has been identified in four diverse regions across Western Australia (WA), reminding growers that long-distance movement of rust inoculum is a serious threat to crop health and hygiene... Growers need to be vigilant in checking their crops for the disease and be aware that varieties which carry the Lr13 (such as Wyalkatchem, Corack and Emu Rock) and Lr17a (Fortune) gene may now be compromised and require additional management... "Wyalkatchem may shift from R-MR to MS and Emu Rock from R to MS-S following further testing at the ACRCP. Some varieties have other leaf rust genes that are expected to still be effective so have a lesser rating shift- King Rock, Fortune and Zippy are likely to shift from R/MR to MRMS. Cultivars Carnamah and Cobra may also be vulnerable to the new pathotype but further tests are needed to establish their responses more accurately...
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