<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The induction of acid pathogenesis-related proteins (PR-proteins) of group 1 (PR-1) by systemic virus infections of tobacco plants was investigated during a time period between 3 and 19 days after inoculation. Each leaf position was investigated separately. The PR proteins were detected electrophoretically and, in addition, virus protein was detected by Enzyme Linked Immunosorbent Assay (ELISA). Potato virus X (PVX) and potato virus Y (PVY) were found to highly induce PR proteins in <italic>N. tabacum</italic> L. “Samsun NN”. The same results were obtained when PVX was investigated in <italic>N. tabacum</italic> L. “Samsun”. The accumulation started later and took place more slowly than during hypersensitive host reaction (HR) of “Samsun NN” to tobacco mosaic virus (TMV). A correlation was found between the accumulation of PR proteins and the accumulation of the virus in the same leaf. Cucumber mosaic virus (CMV) was less effective in PR protein induction than PVX and PVY. Consequently it could be demonstrated that PR proteins do not only appear due to hypersensitive host reactions but also during systemic virus infections.</p></abstract>

The induction of acid pathogenesis-related proteins (PR-proteins) of group 1 (PR-1) by systemic virus infections of tobacco plants was investigated during a time period between 3 and 19 days after inoculation. Each leaf position was investigated separately. The PR proteins were detected electrophoretically and, in addition, virus protein was detected by Enzyme Linked Immunosorbent Assay (ELISA). Potato virus X (PVX) and potato virus Y (PVY) were found to highly induce PR proteins in N. tabacum L. “Samsun NN”. The same results were obtained when PVX was investigated in N. tabacum L. “Samsun”. The accumulation started later and took place more slowly than during hypersensitive host reaction (HR) of “Samsun NN” to tobacco mosaic virus (TMV). A correlation was found between the accumulation of PR proteins and the accumulation of the virus in the same leaf. Cucumber mosaic virus (CMV) was less effective in PR protein induction than PVX and PVY. Consequently it could be demonstrated that PR proteins do not only appear due to hypersensitive host reactions but also during systemic virus infections.

Induction of Pathogenesis-Related Proteins of Group 1 by Systemic Virus Infections of <italic>Nicotiana tabacum</italic> L.

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Induction of Pathogenesis-Related Proteins of Group 1 by Systemic Virus Infections of  L.

The induction of acid pathogenesis-related proteins (PR-proteins) of group 1 (PR-1) by systemic virus infections of tobacco plants was investigated during a...

Induction of Pathogenesis-Related Proteins of Group 1 by Systemic Virus Infections of Nicotiana tabacum L.

Published Online: Jan 06, 2015

Page range: 63 - 70

Received: Mar 07, 1998

Accepted: Jun 23, 1998

DOI: https://doi.org/10.2478/cttr-2013-0671

© 1998 Beiträge zur Tabakforschung International

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.