Fecha/hora: 13/06/2024 06:37:49

Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 05/12/2018
Fecha de la última actualización: | 05/12/2018
Autoria: | GONZÁLEZ-ARCOS, M.; DE NORONHA FONSECA, M. E.; ARRUABARRENA, A.; LIMA, M. F.; MICHEREFF-FILHO, M.; MORIONES, E.; FERNÁNDEZ-MUÑOZ, R.; BOITEUX, L. S.
Afiliación: | MATIAS GONZÁLEZ-ARCOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIA ESTHER DE NORONHA FONSECA, Nacional Center for Vegetable Crops Research (CNPH), Embrapa Hortaliças, Brazil; ANA ARRUABARRENA PASCOVICH, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MIRTES F. LIMA, Nacional Center for Vegetable Crops Research (CNPH), Embrapa Hortaliças, Brazil; MIGUEL MICHEREFF-FILHO, Nacional Center for Vegetable Crops Research (CNPH), Embrapa Hortaliças, Brazil; ENRIQUE MORIONES, Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Universidad de Málaga, Spain; RAFAEL FERNÁNDEZ-MUÑOZ, Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Universidad de Málaga, Spain; LEONARDO S. BOITEUX, Nacional Center for Vegetable Crops Research (CNPH), Embrapa Hortaliças, Brazil.
Título: | Identification of genetic sources with attenuated Tomato chlorosis virus-induced symptoms in Solanum (section Lycopersicon) germplasm.
Año de publicación: | 2018
Fuente/Imprenta: | Euphytica, 1 October 2018, vol. 214, Issue 10, Article number 178.
ISSN: | 0014-2336 // Online ISSN 1573-5060
DOI: | 10.1007/s10681-018-2253-9
Idioma: | Inglés
Notas: | Article history: Received 26 March 2018 // Accepted 04 September 2018 // First Online 22 September 2018.

Contenido:

ABSTRACT.
The whitefly-transmitted Tomato chlorosis virus (ToCV) (genus Crinivirus) is associated with yield and quality losses in field and greenhouse-grown tomatoes (Solanum lycopersicum) in South America. Therefore, the search for sources of ToCV resistance/tolerance is a major breeding priority for this region. A germplasm of 33 Solanum (Lycopersicon) accessions (comprising cultivated and wild species) was evaluated for ToCV reaction in multi-year assays conducted under natural and experimental whitefly vector exposure in Uruguay and Brazil. Reaction to ToCV was assessed employing a symptom severity scale and systemic virus infection was evaluated via RT-PCR and/or molecular hybridization assays. A subgroup of accessions was also evaluated for whitefly reaction in two free-choice bioassays carried out in Uruguay (with Trialeurodes vaporariorum) and Brazil (with Bemisia tabaci Middle-East-Asia-Minor1?MEAM1 = biotype B). The most stable sources of ToCV tolerance were identified in Solanum habrochaites PI 127827 (mild symptoms and low viral titers) and S. lycopersicum ?LT05? (mild symptoms but with high viral titers). These two accessions were efficiently colonized by both whitefly species, thus excluding the potential involvement of vector-resistance mechanisms. Other promising breeding sources were Solanum peruvianum (sensu lato) ?CGO 6711? (mild symptoms and low virus titers), Solanum chilense LA1967 (mild symptoms, but with high levels of B. tabaci MEAM1 oviposition) and Solanum pennellii LA0716 (intermediate symptoms and low level of B. tabaci MEAM1 oviposition). Additional studies are necessary to elucidate the genetic basis of the tolerance/resistance identified in this set of Solanum (Lycopersicon) accessions. 
© 2018, Springer Nature B.V.

Palabras-Clave: | TOLERANCE; VIRUS RESISTANCE; VIRUS SCREENING; WHITEFLY RESISTANCE.
Thesagro: | TOMATE.
Categoría del tema: | H20 Enfermedades de las plantas
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (101741-1) - PXI - AP - DD - PP/EUPHYTICA/2018 -  -  - DIS