An antiviral principle from tomatoes systemically infected with tobacco mosaic virus

1969 ◽  
Vol 47 (4) ◽  
pp. 513-518 ◽  
Author(s):  
K. C. Chadha ◽  
B. H. MacNeill
Keyword(s):  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Diseased Plant ◽  
Tomato Plants ◽  
Early Stages ◽  
Host Interaction ◽  
High Level ◽  
Susceptible Tomato

An antiviral principle (AVP) has been isolated from tomato plants systemically infected with tobacco mosaic virus (TMV). This principle when mixed with TMV inoculum, or applied separately to the host before inoculation, markedly reduces the infectivity of the virus. Induction of the principle in tomato begins during the very early stages of virus–host interaction; later, with the development of a high level of AVP, there is a concomitant decline both in the amount of virus in the diseased plant and in the infectivity of the virus which is present. The production of AVP is not accompanied by overt signs of hypersensitivity or necrosis in the susceptible tomato host.

Influence of temperature upon levels of virus and an induced antiviral principle in tomato plants systemically infected with tobacco mosaic virus

1969 ◽  
Vol 15 (12) ◽  
pp. 1469-1471 ◽  
Author(s):  
K. C. Chadha ◽  
B. H. MacNeill
Keyword(s):  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Critical Level ◽  
Diseased Plant ◽  
Nicotiana Glutinosa ◽  
Tomato Plants ◽  
Infected Tomato ◽  
High Level ◽  
Incubation Temperatures

The levels of tobacco mosaic virus (TMV) and an associated antiviral principle (AVP) in infected tomato plants incubated at temperatures ranging from 15.5 C to 32 C were determined. Yield of TMV, as measured spectrophotometrically, reached a maximum at 26.5 C, but fell off markedly at 32 C. Infectivity, as indicated by local-lesion counts on Nicotiana glutinosa, reached its maximum at 23 C then declined substantially at the higher incubation temperatures. Production of AVP in the diseased plants reached a maximum at 26 C and was maintained at a high level at 32 C. Temperatures most favorable for the induction of AVP had an influence both on the quantity and the quality of the virus produced. It is suggested that the presence of a critical level of AVP in the diseased plant not only lowers the yield of TMV, but profoundly reduces the infectivity of the virus which is present.

scholarly journals Tobacco Mosaic Virus (TMV) Infection in Several Varieties and Ages of Tomato Plants (Lycopersicum esculentum, Mill.)

2018 ◽  
Vol 17 (2) ◽  
pp. 55-63
Author(s):  
Nurhayati DAMIRI ◽  
Amat NURKHOLIS ◽  
Yulia PUJIASTUTI ◽  
Supli Effendi RAHIM
Keyword(s):  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Disease Severity ◽  
Plant Protection ◽  
Disease Incidence ◽  
Block Design ◽  
Tomato Plants ◽  
Moderate Disease ◽  
Department Faculty ◽  
Susceptible Tomato

Disease caused by Tobacco Mosaic Virus (TMV) is an important disease in tomato plants, and is transmitted through both natural and artificial wounds. TMV attacking tomato plants can cause qualitatively and quantitatively lower production. The decline in production by TMV attack can reach    60 %. This research was conducted at the greenhouse of the Plant Protection Department, Faculty of Agriculture, University of Sriwijaya, Indralaya, Ogan Ilir, South Sumatra, Indonesia, from January to June 2016. The purpose of this study was to assess TMV attack on different varieties and ages of tomato plants. This study was conducted using a factorial in Factorial Randomized Complete Block Design (FRCBD), with the first factor, namely plant varieties, and the second factor, age stage of plants, repeated 3 times. The results showed that the most susceptible tomato was “Permata”, with the fastest incubation period and moderate disease severity. Age 8 weeks, when inoculation took place, was the most vulnerable time, with the highest disease severity. A combination of the tomato variety of Permata and an age stage of 8 weeks at the time of inoculation had the highest disease incidence.

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