|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|2836184||1164482||2016||3 صفحه PDF||سفارش دهید||دانلود کنید|
• Resistance of common wheat to a Lolium isolate of Pyricularia oryzae was controlled by two genes.
• Avirulence of the Lolium isolate on common wheat was controlled by two genes.
• Disruption of the strong avirulence gene led the Lolium isolate to gain virulence on common wheat.
Pyricularia oryzae isolates from Lolium spp. (annual ryegrass and perennial ryegrass) show evidence of recent events in evolution of this fungus. A wheat blast isolate found in Kentucky in 2011 was assumed to originate from annual ryegrass isolates. Genetic analyses revealed that the incompatibility between a Lolium isolate and common wheat cultivars is controlled by two gene pairs, Rmg6–A1 with a strong effect and R2-A2 with a weak effect, implying that this incompatibility is conditioned by simple gene-for-gene interactions. Disruption of the A1 avirulence gene led the Lolium isolate to gain virulence on common wheat. These results suggest a mechanism for host jumping by the blast fungus.
Journal: Physiological and Molecular Plant Pathology - Volume 95, July 2016, Pages 84–86