Inhibition of virus replication and symptom expression by reactive oxygen species in tobacco infected with Tobacco mosaic virus

R. Bacsó; Y. Hafez; Z. Király; L. Király

doi:10.1556/aphyt.46.2011.1.1

Acta Phytopathologica et Entomologica Hungarica

Volume/Issue:: Volume 46: Issue 1

Inhibition of virus replication and symptom expression by reactive oxygen species in tobacco infected with Tobacco mosaic virus

Authors:

R. Bacsó

R. Bacsó Hungarian Academy of Sciences Department of Pathophysiology, Plant Protection Institute H-1525 Budapest P.O. Box 102 Hungary

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Y. Hafez

Y. Hafez Hungarian Academy of Sciences Department of Pathophysiology, Plant Protection Institute H-1525 Budapest P.O. Box 102 Hungary

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Z. Király

Z. Király Hungarian Academy of Sciences Department of Pathophysiology, Plant Protection Institute H-1525 Budapest P.O. Box 102 Hungary

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, and

L. Király

L. Király Hungarian Academy of Sciences Department of Biotechnology, Plant Protection Institute H-1525 Budapest P.O. Box 102 Hungary

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Pages:: 1–10

Online Publication Date:: 26 May 2011

Publication Date:: 01 Jun 2011

Article Category:: Journal Article

DOI:: https://doi.org/10.1556/aphyt.46.2011.1.1

Keywords:: reactive oxygen species; plant virus resistance

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In spite of the enormous information from research on genetics of plant disease resistance, the question still remains unresolved: what is directly inhibiting or killing pathogens and suppressing symptoms in resistant plants? This is particularly true for resistance to viral infections. Here we show that externally applied reactive oxygen species (ROS) such as hydrogen peroxide (H₂O₂) or ROS-producing (O ₂^·− [superoxide] and H₂O₂) chemical systems infiltrated into tobacco leaves 2 hours after inoculation suppress replication of Tobacco mosaicvirus (TMV) in the susceptible Samsun (nn) cultivar. This was determined by a biological and a real-time PCR method. Infiltration of leaves of the resistant Xanthi (NN) cultivar with the ROS-producing chemicals and H₂O₂ significantly suppressed local necrotic lesions (i.e. the hypersensitive response) after inoculation of tobacco leaves with TMV. Accordingly, an early accumulation or external application of ROS, such as O ₂^·− and H₂O₂, in tobacco may contribute to the development of resistance to TMV infection.

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Acta Phytopathologica et Entomologica Hungarica

Print ISSN:: 0238-1249

Online ISSN:: 1588-2691

Editor-in-Chief

Jenő KONTSCHÁN Centre for Agricultural Research, Hungary

Technical Editor

Ágnes TURÓCI Centre for Agricultural Research, Hungary

Section Editor

K SALÁNKI Centre for Agricultural Research, Hungary

Editorial Board

Z BOZSÓ Centre for Agricultural Research, Hungary

PE CHETVERIKOV Saint-Petersburg State University, Russia

JX CUI Henan Institute of Science and Technology, China

J FODOR Centre for Agricultural Research, Hungary

Z IMREI Centre for Agricultural Research, Hungary

BM KAYDAN Çukurova University, Turkey

L KISS University of Southern Queensland, Australia

V MARKÓ Hungarian University of Agriculture and Life Sciences, Hungary

MW NEGM Ibaraki University, Japan

L PALKOVICS Széchenyi István University, Hungary

M POGÁNY Centre for Agricultural Research, Hungary

D RÉDEI National Chung Hsing University, Taiwan

A TOLSTIKOV University of Tyumen, Russia

J VUTS Rothamsted Research, UK

GQ WANG Guangxi University, China

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Acta Phytopathologica et Entomologica Hungarica
Language	English
Size	B5
Year of Foundation	1966
Volumes per Year	1
Issues per Year	2
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