scholarly journals Transmissibility of Cucumber mosaic virus by Aphis gossypii Correlates with Viral Accumulation and Is Affected by the Presence of Its Satellite RNA

2000 ◽  
Vol 90 (10) ◽  
pp. 1068-1072 ◽  
Author(s):  
Fernando Escriu ◽  
Keith L. Perry ◽  
Fernando García-Arenal
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Aphis Gossypii ◽  
Natural Populations ◽  
Virus Transmission ◽  
Negative Effect ◽  
Infected Tomato ◽  
Satellite Rnas ◽  
Viral Accumulation ◽  
Test Plants

Satellite RNAs (satRNAs) are associated with Cucumber mosaic virus (CMV) in tomato, most often causing severe epidemics of necrotic plants, and not associated with specific host symptoms. Laboratory studies on virus transmission by the aphid vector Aphis gossypii were performed to better understand the dynamics of field populations of CMV. The presence of satRNAs correlated with lower concentrations of virus in infected plants and with a decrease in the efficiency of transmission from satRNA-infected plants. Both the concentration of virus in CMV-infected tomato and the efficiency of transmission varied more extensively with nonnecrogenic satRNAs than with necrogenic satRNAs. A negative effect of satRNAs on virus accumulation can account, in part, for a decrease in the field transmission and recovery of CMV + satRNAs. Aphids behaved differently and probed less readily on plants infected with CMV + necrogenic satRNAs compared with plants containing non-necrogenic satRNAs. Aphid-mediated satRNA-free CMV infections were observed in test plants when aphids were fed on source plants containing CMV + nonnecrogenic satRNA; no comparable satRNA-free test plants occurred when aphids were fed on source plants containing necrogenic satRNAs. These results indicate that factors associated with transmission can be a determinant in the evolution of natural populations of CMV and its satRNA.

scholarly journals The relationship between the Aphis gossypii Glover group and cucumber mosaic virus in autumn cucumbers.

1975 ◽  
Vol 23 (3) ◽  
pp. 269-278
Author(s):  
W.M.T.J. de Brouwer ◽  
H.J.M. van Dorst
Keyword(s):  
Virus Infection ◽  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Aphis Gossypii ◽  
Virus Transmission ◽  
Aphis Gossypii Glover ◽  
The Relationship ◽  
Natural Virus ◽  
Test Plants

The results of studies involving aphid trapping and natural virus infection of test plants showed that A. gossypii played an important part in cucumber and gherkin infection by CMV, which occurred most frequently in August. However, only a small percentage of any of the aphids found was responsible for virus transmission. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Evolution of Virulence in Natural Populations of the Satellite RNA of Cucumber mosaic virus

2000 ◽  
Vol 90 (5) ◽  
pp. 480-485 ◽  
Author(s):  
Fernando Escriu ◽  
Aurora Fraile ◽  
Fernando García-Arenal
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Natural Populations ◽  
Theoretical Models ◽  
Aphid Transmission ◽  
Satellite Rna ◽  
Virulence Analysis ◽  
Trade Offs ◽  
Evolution Of Virulence ◽  
Satellite Rnas

From 1986 to 1992, an epidemic of tomato necrosis caused by Cucumber mosaic virus (CMV) plus CMV satellite RNAs (satRNAs) occurred in eastern Spain. From 1989 onward, the frequency of tomato necrosis di-minshed, and it almost completely disappeared after 1991. Analyses of plants infected with CMV and with CMV satRNA and of the phenotype (necrogenic or nonnecrogenic for tomato) induced by some CMV satRNA variants, showed that the disappearance of tomato necrosis was due to changes in the genetic composition of the satRNA population (i.e., to its evolution toward decreased virulence). Analysis of components of the fitness of satRNA variants, necrogenic or nonnecrogenic for tomato, showed that necrogenic and nonnecrogenic variants did not differ in infectivity or in their accumulation level in tomato and that they represented the same fraction of encapsidated RNA. Other fitness components were positively correlated with the greater virulence of necrogenic variants, in that they were favored in mixed infections with nonnecrogenic variants and were more effectively passed into CMV progeny than were nonnecrogenic variants. On the other hand, necrogenic CMV satRNA variants caused a more pronounced depression in the accumulation of CMV than did nonnecro-genic variants, which could affect the efficiency of aphid transmission. Thus, the evolution of virulence in the CMV satRNA population can be explained by trade-offs between factors that determine virulence and factors that affect transmission, as predicted by theoretical models on the evolution of virulence in parasites.

scholarly journals Characterization of cucumber mosaic virus and its satellite RNAs associated with tomato lethal necrosis in Serbia

2021 ◽  
Author(s):  
Ivana Stanković ◽  
Ana Vučurović ◽  
Katarina Zečević ◽  
Branka Petrović ◽  
Dušan Nikolić ◽  
...  
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Satellite Rnas

THE ROLE OF INSECTS IN THE SPREAD OF CUCUMBER MOSAIC VIRUS

1964 ◽  
Vol 44 (1) ◽  
pp. 1-6 ◽  
Author(s):  
R. J. McClanahan ◽  
G. E. Guyer
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Small Proportion ◽  
Aphis Gossypii ◽  
Macrosiphum Euphorbiae ◽  
Asclepias Syriaca ◽  
Melanoplus Differentialis ◽  
Aphis Gossypii Glover ◽  
Echinocystis Lobata

Entomological aspects of the epidemiology of cucumber mosaic virus (CMV) were studied in Michigan. Myzus persicae (Sulzer) and Aphis gossypii Glover were efficient vectors of CMV between various hosts in the laboratory. Macrosiphum euphorbiae (Thomas) transmitted CMV between cucumber and Echinocystis lobata (Michx.) T. & G. Myzocallis asclepiadis (Monell) was shown to be a new vector of CMV between Asclepias syriaca L. Neither Melanoplus differentialis (Thomas) nor Acalymma vittata (Fabricius) transmitted the virus in limited trials.There was a small proportion of cucumber plants infected early in July, when alate M. persicae were present. In August the incidence of infection rose rapidly after a period of activity of alate A. gossypii. Alate aphids were trapped in yellow water pans situated in and around cucumbers. Seven known vectors of CMV were caught.

scholarly journals Cucumber mosaic virus satellite RNAs that induce similar symptoms in melon plants show large differences in fitness

2011 ◽  
Vol 92 (8) ◽  
pp. 1930-1938 ◽  
Author(s):  
Mónica Betancourt ◽  
Aurora Fraile ◽  
Fernando García-Arenal
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Evolutionary Dynamics ◽  
Plant Biomass ◽  
Aphid Transmission ◽  
Helper Virus ◽  
Relative Fitness ◽  
Single Infection ◽  
Trade Offs ◽  
Satellite Rnas

Two groups of Cucumber mosaic virus (CMV) satellite RNAs (satRNAs), necrogenic and non-necrogenic, can be differentiated according to the symptoms they cause in tomato plants, a host in which they also differ in fitness. In most other CMV hosts these CMV-satRNA cause similar symptoms. Here, we analyse whether they differ in traits determining their relative fitness in melon plants, in which the two groups of CMV-satRNAs cause similar symptoms. For this, ten necrogenic and ten non-necrogenic field satRNA genotypes were assayed with Fny-CMV as a helper virus. Neither type of CMV-satRNA modified Fny-CMV symptoms, and both types increased Fny-CMV virulence similarly, as measured by decreases in plant biomass and lifespan. Necrogenic and non-necrogenic satRNAs differed in their ability to multiply in melon tissues; necrogenic satRNAs accumulated to higher levels both in single infection and in competition with non-necrogenic satRNAs. Indeed, multiplication of some non-necrogenic satRNAs was undetectable. Transmission between hosts by aphids was less efficient for necrogenic satRNAs as a consequence of a more severe reduction of CMV accumulation in leaves. The effect of CMV accumulation on aphid transmission was not compensated for by differences in satRNA encapsidation efficiency or transmissibility to CMV progeny. Thus, necrogenic and non-necrogenic satRNAs differ in their relative fitness in melon, and trade-offs are apparent between the within-host and between-host components of satRNA fitness. Hence, CMV-satRNAs could have different evolutionary dynamics in CMV host-plant species in which they do not differ in pathogenicity.

Differential interactions among strains of tomato aspermy virus and satellite RNAs of cucumber mosaic virus

Virology ◽  
1992 ◽  
Vol 186 (2) ◽  
pp. 475-480 ◽  
Author(s):  
Enrique Moriones ◽  
Isabel Diaz ◽  
Emilio Rodriguez-Cerezo ◽  
Aurora Fraile ◽  
Fernando Garcia-Arenal
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Tomato Aspermy Virus ◽  
Satellite Rnas

scholarly journals Emergence and Characterization of Satellite RNAs Associated with Spanish Cucumber Mosaic Virus Isolates

1984 ◽  
Vol 65 (3) ◽  
pp. 539-547 ◽  
Author(s):  
I. Garcia-Luque ◽  
J. M. Kaper ◽  
J. R. Diaz-Ruiz ◽  
M. Rubio-Huertos
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Satellite Rnas ◽  
Virus Isolates
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