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Cross‐Protection and Multiplication of Mild and Severe Strains of TMV in Tomato Plants
Author(s) -
Burgyán J.,
Gáborjányi R.
Publication year - 1984
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.1439-0434.1984.tb03404.x
Subject(s) - tobacco mosaic virus , biology , inoculation , strain (injury) , virus , multiplication (music) , virology , tobamovirus , horticulture , veterinary medicine , medicine , physics , acoustics , anatomy
The presence of virus having mixed coats has been demonstrated serologically in tomato plants cross‐protected with a mild strain (M 11–16) against the severe (UI) strain of tobacco mosaic virus (TMV). The proportion of virus having mixed coats remained constant throughout at ca. 40% even in top leaves where severe symptoms caused by the challenge virus (U1) first appeared. The symptoms caused by the U1 in doubly‐inoculated plants occurred in the leaves where:(a) the amout of total virus (irrespective of the type of coat) protein was 52% that of U1 strain in singly inoculated plants, (b) the multiplication of the severe U1 strain was reduced to only 9% as compared with the leaves singly inoculated with U1, (c) the ratio of severe to mild strain was increased to near equality although there was a significant reduction in the multiplication of U1in these leaves, (d) the amount of infective U1RNA started to increase.