Analysis of mechanism underlying suppression of TMV multiplication in <I>WIPK/SIPK</I>-silenced tobacco plants

DOI

Bibliographic Information

Other Title
  • MAPKであるWIPKとSIPKを抑制したタバコにおけるタバコモザイクウイルス増殖抑制機構の解析

Abstract

In N gene-containing tobacco (Nicotiana tabacum) cultivars, infection with Tobacco mosaic virus (TMV) results in the rapid death of infected cells, resulting in the localization of the virus and formation of necrotic lesions. The tobacco mitogen-activated protein kinases WIPK and SIPK are activated by TMV infection. In a TMV-resistant tobacco cultivar, silencing of WIPK and SIPK resulted in suppression of TMV multiplication and increased accumulation of salicylic acid (SA). In a TMV-susceptible tobacco cultivar, TMV accumulation was not affected by silencing of WIPK and SIPK, suggesting that N-mediated signaling is required for suppression of TMV multiplication in WIPK/SIPK-silenced plants. When SA accumulation was prevented by expression of SA-degrading salicylate hydroxylase (NahG), suppression of viral multiplication in WIPK/SIPK-silenced plants was partially compromised. These results suggest that N-mediated activation of WIPK and SIPK enhances TMV multiplication through suppression of SA accumulation.

Journal

Details 詳細情報について

  • CRID
    1390001205630528000
  • NII Article ID
    130006991276
  • DOI
    10.14841/jspp.2010.0.0313.0
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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