Wheat <i>Ym2</i> originated from <i>Aegilops sharonensis</i> and confers resistance to soil-borne <i>Wheat yellow mosaic virus</i> infection to the roots.

ABSTRACT: Wheat yellow mosaic virus (WYMV) is a pathogen transmitted into its host's roots by the soil-borne vector Polymyxa graminis. Ym1 and Ym2 genes protect the host from the significant yield losses caused by the virus, but the mechanistic basis of these resistance genes remains poorly understood. Here, it has been shown that Ym1 and Ym2 act within the root either by hindering the initial movement of WYMV from the vector into the root and/or by suppressing viral multiplication. A mechanical inoculation experiment on the leaf revealed that the presence of Ym1 reduced viral infection incidence, rather than viral titer, while that of Ym2 was ineffective in the leaf. To understand the basis of the root specificity of the Ym2 product, th

SUBMITTER: Mishina K 

PROVIDER: S-EPMC10089197 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature