Premium
Acquired Resistance in Hypersensitive Tobacco Operates by Limiting Cell‐to‐Cell Spread of Virus Infection without Affecting Virus Multiplication
Author(s) -
Pennazio S.,
Roggero P.
Publication year - 1991
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1991.tb00119.x
Subject(s) - tobacco mosaic virus , biology , virus , virology , inoculation , viral replication , limiting , hypersensitive response , necrosis , microbiology and biotechnology , immunology , programmed cell death , apoptosis , genetics , mechanical engineering , engineering
Localized and systemic acquired resistance against tobacco mosaic virus (TMV) or tobacco necrosis virus was induced when local lesions were produced in leaves of Xanthi‐nc tobacco by mechanical inoculation with TMV. Both types of resistance were characterized by reduction in the size of lesions produced by the challenging viruses, whereas accumulation of viral antigen in lesions was slightly increased. These results, confirming previous findings relative to other hypersensitive plant virus combinations, do not support the view that an inhibitor of virus replication operates in the resistant tissues, but indicate that both types of resistance operate only against cell‐to‐cell spread of virus.