Cucumber mosaic virus-tolerant transgenic tomato plants expressing a satellite RNA

1992 ◽  
Vol 83-83 (6-7) ◽  
pp. 679-683 ◽  
Author(s):  
Y. Saito ◽  
T. Komari ◽  
C. Masuta1 ◽  
Y. Hayashi ◽  
T. Kumashiro ◽  
...  
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Transgenic Tomato ◽  
Satellite Rna ◽  
Tomato Plants ◽  
Transgenic Tomato Plants

scholarly journals Transgenic Tomato Plants Expressing Satellite RNA Are Tolerant to Some Strains of Cucumber Mosaic Virus

1994 ◽  
Vol 119 (3) ◽  
pp. 642-647 ◽  
Author(s):  
P.B. McGarvey ◽  
M.S. Montasser ◽  
J.M. Kaper
Keyword(s):  
Transgenic Plants ◽  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Unit Length ◽  
Transgenic Tomato ◽  
Enzyme Linked Immunosorbent Assay ◽  
Control Group ◽  
Satellite Rna ◽  
Tomato Plants ◽  
Transgenic Tomato Plants

Transgenic tomato plants (Lycopersicon esculentum Mill.) expressing cucumber mosaic virus (CMV) satellite RNA fused to a gene for β-glucuronidase were produced using Agrobacterium-mediated transformation. The R1 progeny of self-crossed R0 plants were challenge-inoculated with virion or RNA preparations of CMV or tomato aspermy virus (TAV). The transgenic plants challenged with CMV-1 showed mild disease symptoms in the first 2 weeks postchallenge followed by a decrease in symptoms, resulting in little difference between the transgenic and uninfected control group by the fourth week. Enzyme-linked immunosorbent assay results showed about a 10-fold decrease in virus accumulation in the transgenic plants compared to controls. Tolerance was evident only in plants that contained the recombinant insert and produced mature unit-length satellite RNA after CMV infection. Plants challenged with TAV showed no significant tolerance to virus-induced symptoms.

scholarly journals Analysis of Mechanisms Involved in the Cucumber mosaic virus Satellite RNA-mediated Transgenic Resistance in Tomato Plants

2004 ◽  
Vol 17 (1) ◽  
pp. 98-108 ◽  
Author(s):  
Fabrizio Cillo ◽  
Mariella M. Finetti-Sialer ◽  
Maria A. Papanice ◽  
Donato Gallitelli
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Rna Silencing ◽  
Resistance Mechanism ◽  
Degradation Process ◽  
Transgenic Tomato ◽  
Satellite Rna ◽  
Total Recovery ◽  
Tomato Plants ◽  
Free Strain

Transgenic tomato (Lycopersicon esculentum Mill. cv. UC82) plants expressing a benign variant of Cucumber mosaic virus satellite RNA (CMV Tfn-satRNA) were generated. The transformed plants did not produce symptoms when challenged with a satRNA-free strain of CMV (CMV-FL). The same plant lines initially were susceptible to necrosis elicited by a CMV strain supporting a necrogenic variant of satRNA (CMV-77), but a phenotype of total recovery from the necrosis was observed in the newly developing leaves. The features of the observed resistance were analyzed and are consistent with two different mechanisms of resistance. In transgenic plants inoculated with CMV-FL strain, the symptomless phenotype was correlated to the down-regulation of CMV by Tfn-satRNA, amplified from the transgene transcripts, as the first resistance mechanism. On the other hand, the delayed resistance to CMV-77 in transgenic tomato lines was mediated by a degradation process that targets satRNAs in a sequence-specific manner. Evidence is provided for a correlation between a reduced accumulation level of transgenic messenger Tfn-satRNA, the accumulation of small (approximately 23 nucleotides) RNAs with sequence homology to satRNAs, the progressively reduced accumulation of 77-satRNA in infected tissues, and the transition in infected plants from diseased to healthy. Thus, events leading to the degradation of satRNA sequences indicate a role for RNA silencing as the second mechanism determining resistance of transgenic tomato lines.

scholarly journals Development of Breeding Materials of Transgenic Tomato Plants with a Truncated Replicase Gene of Cucumber Mosaic Virus for Resistance to the Virus

2002 ◽  
Vol 52 (3) ◽  
pp. 219-223 ◽  
Author(s):  
Tsukasa Nunome ◽  
Fumiyoshi Fukumoto ◽  
Fumihiro Terami ◽  
Kaoru Hanada ◽  
Masashi Hirai
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Transgenic Tomato ◽  
Replicase Gene ◽  
Tomato Plants ◽  
Transgenic Tomato Plants

EXPRESSION OF CUCUMBER MOSAIC VIRUS COAT PROTEIN CONFERS CROSS-PROTECTION IN TRANSGENIC TOMATO PLANTS

1995 ◽  
pp. 179-184
Author(s):  
Y. Rongchuang ◽  
X. Helin ◽  
L. Mingsheng ◽  
Y. Wengui ◽  
L. Chungui ◽  
...  
Keyword(s):  
Coat Protein ◽  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Cross Protection ◽  
Transgenic Tomato ◽  
Tomato Plants ◽  
Virus Coat Protein ◽  
Transgenic Tomato Plants ◽  
Virus Coat

scholarly journals Viral Satellite RNA Expression in Transgenic Tomato Confers Field Tolerance to Cucumber Mosaic Virus

Plant Disease ◽  
1998 ◽  
Vol 82 (4) ◽  
pp. 391-396 ◽  
Author(s):  
John R. Stommel ◽  
Marie E. Tousignant ◽  
Thanda Wai ◽  
Rita Pasini ◽  
Jacobus M. Kaper
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Test Site ◽  
Significant Negative Correlation ◽  
Field Trials ◽  
Transgenic Tomato ◽  
Rna Expression ◽  
Satellite Rna ◽  
Marketable Yield ◽  
Transgenic Lines

Field trials of transgenic tomato plants expressing an ameliorative satellite RNA of cucumber mosaic virus (CMV) were conducted to test the efficacy of satellite-transgenic technology to protect against CMV infection. Three transgenic tomato lines derived from two susceptible genotypes were evaluated over two growing seasons for viral symptoms and titers, satellite RNA expression, and fruit yield. Satellite-transgenic lines exhibited mild or no CMV symptoms and low viral titers relative to nontransformed plants. A significant negative correlation between satellite RNA levels and disease severity was evident in transgenic lines. Total marketable yield of CMV-infected satellite-transgenic lines was 40 to 84% greater than that of CMV-infected parent lines. Importantly, yield of CMV-infected satellite-transgenic lines did not differ significantly from mock-inoculated parent lines. Risk assessment results demonstrated low levels of satellite RNA transmission within the test site and no evidence of satellite RNA-induced damage on surrounding plants.

Transformed tomato plants express a satellite RNA of cucumber mosaic virus and produce lethal necrosis upon infection with viral RNA

1990 ◽  
Vol 170 (2) ◽  
pp. 548-555 ◽  
Author(s):  
P.B. McGarvey ◽  
J.M. Kaper ◽  
M.J. Avila-Rincon ◽  
L. Peña ◽  
J.R. Diaz-Ruiz
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Viral Rna ◽  
Satellite Rna ◽  
Tomato Plants

scholarly journals Transgenic Plants Expressing Geminivirus Movement Proteins: Abnormal Phenotypes and Delayed Infection by Tomato mottle virus in Transgenic Tomatoes Expressing the Bean dwarf mosaic virus BV1 or BC1 Proteins

2000 ◽  
Vol 13 (3) ◽  
pp. 297-308 ◽  
Author(s):  
Yu-Ming Hou ◽  
Rick Sanders ◽  
Virgina M. Ursin ◽  
Robert L. Gilbertson
Keyword(s):  
Transgenic Plants ◽  
Mosaic Virus ◽  
Viral Disease ◽  
Transgenic Tomato ◽  
Wild Type ◽  
Significant Delay ◽  
Tomato Plants ◽  
Movement Proteins ◽  
Transgenic Tomato Plants ◽  
Bean Dwarf Mosaic Virus

Transgenic tomato plants expressing wild-type or mutated BV1 or BC1 movement proteins from Bean dwarf mosaic virus (BDMV) were generated and examined for phenotypic effects and resistance to Tomato mottle virus (ToMoV). Fewer transgenic plants were recovered with the wild-type or mutated BC1 genes, compared with the wild-type or mutated BV1 genes. Transgenic tomato plants expressing the wild-type or mutated BV1 proteins appeared normal. Interestingly, although BDMV induces only a symptomless infection in tomato (i.e., BDMV is not well adapted to tomato), transgenic tomato plants expressing the BDMV BC1 protein showed a viral disease-like phenotype (i.e., stunted growth, and leaf mottling, curling, and distortion). This suggests that the symptomless phenotype of BDMV in tomato is not due to a host-specific defect in the BC1 protein. One transgenic line expressing the BC1 gene did not show the viral disease-like phenotype. This was associated with a deletion in the 3′ region of the gene, which resulted in expression of a truncated BC1 protein. Several R0 plants, expressing either wild-type or mutated BV1 or BC1 proteins, showed a significant delay in ToMoV infection, compared with non-transformed plants. R1 progeny plants also showed a significant delay in ToMoV infection, but this delay was less than that in the R0 parents. These results also demonstrate that expression of viral movement proteins, in transgenic plants, can have deleterious effects on various aspects of plant development.

Virus Tolerance, Plant Performance of Transgenic Tomato Plants Expressing Coat Protein from Tobacco Mosaic Virus

1988 ◽  
Vol 6 (4) ◽  
pp. 403-409 ◽  
Author(s):  
Richard S. Nelson ◽  
Sheila M. McCormick ◽  
Xavier Delannay ◽  
Philip Dubé ◽  
Jeanne Layton ◽  
...  
Keyword(s):  
Coat Protein ◽  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Transgenic Tomato ◽  
Plant Performance ◽  
Tomato Plants ◽  
Transgenic Tomato Plants ◽  
Virus Tolerance
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