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Effects of Salicylate on Virus‐Infected Tobacco Plants
Author(s) -
Pennazio S.,
Roggero P.,
Gentile Irene Abbattista
Publication year - 1985
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.1439-0434.1985.tb00844.x
Subject(s) - inoculation , biology , methyl salicylate , salicylic acid , tobacco mosaic virus , virus , acquired resistance , lesion , strain (injury) , virology , necrosis , microbiology and biotechnology , horticulture , drug resistance , botany , pathology , biochemistry , medicine , genetics , anatomy
Abstract Salicylate watered onto the soil of tobacco plants in pots reduced the antigen accumulation and local lesion growth of tobacco necrosis virus mechanically inoculated on the leaves. It also retarded the growth of the necrotic centres of lesions and, in parallel, inhibited ethylene production from infected leaves. However, the therapeutic index of salicylate was very small and the chemical had to be applied in advance of, or at the same time as virus inoculation to give good levels of resistance. The number of lesions and their rate of appearance were not affected by salicylate. In addition, it did not induce resistance against multiplication, systemic spread or symptom severity in tobacco plants inoculated with a necrotic strain of potato virus Y. These findings suggest that salicylate is not likely to prove useful as polyvalent chemotherapeutic agent.