Skip to main content
SpringerLink
Log in

Tobacco plants perturbed in the ubiquitin-dependent protein degradation system accumulate callose, salicylic acid, and pathogenesis-related protein 1

  • Published:
Plant Cell Reports Aims and scope Submit manuscript

Abstract

Transgenic tobacco plants expressing an inhibitor of ubiquitin-dependent protein degradation, ubiquitin variant ubR48, spontaneously formed necrotic lesions and displayed altered responsiveness to tobacco mosaic virus attack. These plants were analyzed for the accumulation of defense-related compounds and the expression of pathogenesis-related proteins, which serve as convenient markers for systemic acquired resistance. Callose was detected in the cells of vascular bundles and in the leaf blade. In addition, ubR48 transgenic plants constitutively accumulated enhanced levels of salicylic acid (SA) and/or its glucoside. Accumulation of SA glucoside coincided with high levels of pathogenesis-related protein 1, underscoring the similarity of certain changes in ubR48-expressing plants to an authentic defense reaction.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Author information

Authors and Affiliations

  1. Waksman Institute and Department of Molecular Biology and Biochemistry, Rutgers, The State University of New Jersey, Piscataway, NJ 08855, USA, , , , , , US

    U. Conrath & D. F. Klessig

  2. Institut für Botanik, Universität Wien, A-1030 Vienna, Austria Fax: +43-1-79794131 e-mail: bachmair@s1.botanik.univie.ac.at, , , , , , AT

    A. Bachmair

Authors
  1. U. Conrath
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. D. F. Klessig
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. A. Bachmair
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Received: 8 December 1997 / Revision received: 25 February 1998 / Accepted: 15 March 1998

Rights and permissions

Reprints and permissions

About this article

Cite this article

Conrath, U., Klessig, D. & Bachmair, A. Tobacco plants perturbed in the ubiquitin-dependent protein degradation system accumulate callose, salicylic acid, and pathogenesis-related protein 1. Plant Cell Reports 17, 876–880 (1998). https://doi.org/10.1007/s002990050501

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/s002990050501

Search

Navigation