Resistance to Tomato Yellow Mosaic Virus in Species of<i>Lycopersicon</i>

Piven, N. M.; Uzcategui, R. C. de

doi:10.1094/pd-79-0590

Cited by 30 publications

(18 citation statements)

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“…Previous studies have demonstrated that sources of resistance or tolerance to CMV exist in S. lycopersicum, S. pimpinellifolium L., S. peruvianum L., S. habrochaites, S. cheesmaniae, S. chilense and S. lycopersicodies (Phills et al 1977;Gebre et al 1990;Nitzany 1992;Stoimenova et al 1992;Stamova 1993;Parella et al 1997;Abad et al 2000;Stamova and Chetelat 2000;Ali and Hassan 2002;Cillo et al 2007). The present study showed that these genotypes resist not only vector transmission but also the virus, and supports the findings of Pioven et al (1995) who demonstrated that virus resistance may exist at two levels i.e., against pathogen entry and/or at the level of systemic spread.…”

Section: Discussionsupporting

confidence: 92%

Resistance of Solanum species to Cucumber mosaic virus subgroup IA and its vector Myzus persicae

et al. 2010

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Sixty-nine tomato genotypes representing nine Solanum species were evaluated for resistance to Cucumber mosaic virus (CMV) subgroup IA and its aphid vector Myzus persicae. Resistance was assessed by visual scoring of symptoms in the field under natural conditions, and in the greenhouse by artificial inoculations through aphid M. persicae and mechanical transmissions in the year 2007 and 2009. Considerable variation in responses was observed among the evaluation methods used. Field evaluations were found liable to errors as different levels were observed for the same genotypes in the different years, however mechanical inoculation was found to be the most useful in identifying CMV subgroup IA resistance, in contrast aphid transmission was most useful in identifying insect transmission resistance. All genotypes observed as highly resistant to CMV subgroup IA in the field or through vector transmission became systemically infected through mechanical inoculations. Using mechanical inoculation, six genotypes (TMS-1 of S. lycopersicum, LA1963 and L06049 of S. chilense, LA1353, L06145 and L06223 of S. habrochaites)were found resistant and another six (L06188 and L06238 of S. neorickii, L06219 of S. habrochaites, L05763, L05776 and L06240 of S. pennellii) were found tolerant showing mild symptoms with severity index (SI) ranging 1-2 and with delayed disease development after a latent period (LP) of 18-30 days. However, these genotypes were found to be resistant to highly resistant in the field and through inoculation by M. persicae; and they also supported low population levels of M. persicae except TMS-1. Another nine genotypes (LA2184 of S. pimpinellifolium L., LA2727 of S. neorickii, LA0111, L06221, L06127 and L06231 of S. peruvianum L., LA1306, L06057 and L06208 of S. chmielewskii) showing a susceptible response after mechanical inoculation were highly resistant, resistant and tolerant after M. persicae transmission. The resistant genotypes, identified in the present study can be exploited in the breeding programmes aimed at developing tomato varieties resistant to CMV subgroup IA and broadening the genetic base of CMV-resistant germplasm. The differences observed between mechanical and aphid transmission suggests that one should consider both evaluation methods for tomato germplasm screening against CMV subgroup IA.

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Section: Discussionsupporting

confidence: 92%

Resistance of Solanum species to Cucumber mosaic virus subgroup IA and its vector Myzus persicae

et al. 2010

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“…Host resistance to whitefly vectors is another important factor that could slow virus epidemics by reducing transmission of the virus. Resistance to the vector was assumed to be present in TYLCVresistant L. chilense LA 1969, when tested against Tomato yellow mosaic virus (ToYMV), a bipartite virus (Piven et al, 1995). According to Pico et al (2001), a 'resistance' to TYLCV reported for L. hirsutum LA 1777 was also due to resistance to the vector.…”

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confidence: 99%

Characterisation of a Quantitative Resistance to Vector Transmission of Tomato yellow leaf curl virus in Lycopersicon pimpinellifolium

et al. 2006

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Two wild genotypes from the same species Lycopersicon pimpinellifolium, WVA106 (susceptible) and INRA-Hirsute (so-called 'resistant'), were compared with respect to their reaction to Tomato yellow leaf curl virus isolate Re´union (TYLCV-Mld[RE]), using both whitefly-mediated inoculation and graft inoculation. Disease incidence and symptom severity were scored. Presence and quantification of viral DNA were assessed by dot blot hybridisation. Upon insect inoculation, accession INRA-Hirsute showed a moderate resistance against TYLCV that was overcome by a high inoculation pressure obtained by increasing the cumulative number of inoculative whiteflies. Temporal analyses of the disease progress in relation to this criterion exhibited that the protection was quantitative, mainly reducing the TYLCV-Mld[RE] incidence by at maximum 50% at low inoculation pressure. When graft inoculated, the final TYLCV-Mld[RE] disease incidence was 100% in both susceptible and resistant genotypes with severe symptoms, suggesting a reduction of virus transmission by a vector resistance as a possible mechanism. Implications of using such type of resistance in breeding programmes are discussed.

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“…Acessos de L. peruvianum (LA462 e LA385), considerados moderadamente resistentes à mosca-branca no presente trabalho, foram previamente citados como resistentes ao TYLCV (Tomato yellow leaf curl virus) (Kasrawi et al 1988) e ao ToYMV (Tomato yellow mosaic virus) (Piven et al 1995).…”

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Atratividade e preferência para oviposição de Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) biótipo B em genótipos de tomateiro

Fancelli¹,

Vendramim²,

Lourenção³

et al. 2003

Neotrop. Entomol.

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-Tomato genotypes of different species were evaluated regarding to attractiveness and oviposition preference of Bemisia tabaci (Gennadius) biotype B under greenhouse conditions. The experiment was conducted in a randomized block design, with a split-pot scheme and three replicates. Plant infestation was done at 40-45 days after seedling transplanting by introducing highly whitefly-infested soybean plants. The variables evaluated were adult number and egg number on the adaxial and abaxial surfaces of the leaflets, during five weeks. Each observation was composed by the mean numbers obtained for three leaflets. Leaf area of each genotype was determined to estimate whitefly population per cm 2 . There were no significant differences among genotypes and evaluations regarding to the presence of live adult whiteflies on the adaxial surfaces of the leaflets. For the number of live adult whiteflies on the abaxial surface, the least attractive genotypes were LA716 (Lycopersicon pennellii) and PI134417 (L. hirsutum f. glabratum); LA1609 (L. peruvianum) was one of the most attractive ones. Great number of dead adult whiteflies was registered on LA716, due to the sticky secretion produced by the glandular trichomes that cover leaves and stalks, trapping whiteflies when they contact the leaflet. Similar behavior was verified for LA1739, LA1740, PI127826 (L. hirsutum), PI134417 and PI134418 (L. hirsutum f. glabratum). LA716 and PI134418 were the least preferred genotypes for oviposition. The preferred genotypes for oviposition on the abaxial surface of the leaflets were CNPH1039, Japão (L. pimpinellifolium) and LA1609.KEY WORDS: Lycopersicon, whitefly, Bemisia argentifolii, resistance RESUMO -Genótipos de tomateiro pertencentes a diferentes espécies foram avaliados quanto à atratividade para adultos e preferência para oviposição de Bemisia tabaci (Gennadius) biótipo B, em casa de vegetação. O experimento foi instalado em blocos ao acaso, em esquema de parcelas subdivididas, com três repetições. Para infestação dos genótipos, introduziram-se, na casa de vegetação, plantas de soja com alta população de mosca-branca, aos 40-45 dias após o transplante. Avaliou-se o número de adultos e de ovos da mosca-branca nas faces adaxial e abaxial dos folíolos, durante cinco semanas. Cada observação foi constituída pela média de três folíolos. Determinou-se a área foliar média para cada genótipo, para obtenção da infestação por cm 2 . Não foram constatadas diferenças significativas entre genótipos e entre avaliações, com relação ao número de adultos vivos na face adaxial dos folíolos. Considerando o número de adultos vivos na face abaxial, os genótipos menos atrativos foram LA716 (Lycopersicon pennellii) e PI134417 (L. hirsutum f. glabratum), ao passo que LA1609 (L. peruvianum) destacou-se como um dos mais atrativos. Em LA716, registrou-se o maior número de adultos mortos, devido à exsudação de tricomas glandulares que cobrem as folhas e caules, exercendo efeito sobre a captura dos adultos quando em contato com os folíolos. Comporta...

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Resistance to Tomato Yellow Mosaic Virus in Species ofLycopersicon

Cited by 30 publications

References 0 publications

Resistance of Solanum species to Cucumber mosaic virus subgroup IA and its vector Myzus persicae

Resistance of Solanum species to Cucumber mosaic virus subgroup IA and its vector Myzus persicae

Characterisation of a Quantitative Resistance to Vector Transmission of Tomato yellow leaf curl virus in Lycopersicon pimpinellifolium

Atratividade e preferência para oviposição de Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) biótipo B em genótipos de tomateiro

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