Fecha/hora: 13/06/2024 17:35:40

Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 10/07/2019
Fecha de la última actualización: | 26/08/2019
Autoria: | HERNÁNDEZ-RODRÍGUEZ, L.; BENÍTEZ-GALEANO, M.J.; BERTALMIO, A.; RUBIO, L.; RIVAS, F.; ARRUABARRENA, A.; ROLON, R.; COLINA, R.; MAESO, D.
Afiliación: | LESTER HERNÁNDEZ RODRÍGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.; MARÍA JOSÉ BENÍTEZ-GALEANO, Laboratorio de Virología Molecular, Centro Universitario Regional Noroeste (CENUR Noroeste), Universidad de la República, Salto, Uruguay; ANA MARIA BERTALMIO CASARIEGO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LETICIA PAOLA RUBIO CATTANI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CARLOS FERNANDO RIVAS GRELA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANA ARRUABARRENA PASCOVICH, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; RODOLFO ROQUE ROLON RODRIGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; RODNEY COLINA, Laboratorio de Virología Molecular, Centro Universitario Regional Noroeste (CENUR Noroeste), Universidad de la República, Salto, Uruguay; DIEGO CESAR MAESO TOZZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.
Título: | Diversity of Uruguayan citrus tristeza virus populations segregated after single aphid transmission.
Año de publicación: | 2019
Fuente/Imprenta: | Tropical Plant Pathology, 2019, volume 44, Issue 4, pages 352-362
ISSN: | 1983-2052
DOI: | 10.1007/s40858-019-00288-x
Idioma: | Inglés

Notas:

Article history: Received 16 November 2018 / Accepted 10 April 2019 / First Online 06 May 2019 // Published 15 August 2019.
Acknowledgments: This research was funded by the Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay (project CT-06), through the National Program of Citrus Research and the National Citrus Sanitation Program.

Contenido:

ABSTRACT.
Prevalence of citrus tristeza virus (CTV) isolates causing severe stem pitting symptoms with a high diverse genetic composition represents a threat for citrus crops in Uruguay. This work aimed to characterize viral components of CTV populations segregated by single aphid (Toxoptera citricida) transmission (SAT). Thirty-nine SAT-derived sub-isolates were obtained from six CTV field isolates. Only eight were MCA13 non-reactive, and six of them, together with other three MCA13 reactive sub-isolates, were considered mild by the intensity of their reaction in ?Mexican? lime, ?Madam Vinous? sweet orange, ?Duncan? grapefruit and sour orange indicator plants. Fourteen sub-isolates, including two MCA13 non-reactive, were considered moderate, and the remaining sub-isolates were all MCA13 reactive and with severe reactions in the indicator plants. Sequence comparisons of the p20, p23 and p25 genes showed a high inter (among all isolates and their derived sub-isolates)- and intra (among each isolate and its derived sub-isolates)-specific evolutionary diversity, with the presence of the CTV strains VT, T3, RB, and NC in mixtures of their complex populations. Together, our data revealed the heterogeneity of the Uruguayan CTV populations in these CTV field isolates. The results provide additional biological and molecular information on the complex CTV populations in Uruguay and must be considered for improving the CTV management program.
© Sociedade Brasileira de Fitopatologia 2019

Palabras-Clave: | Biological indexing; Closterovirus; CTV; SAT; Toxoptera citricida.
Categoría del tema: | F01 Cultivo
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (101869-1) - PXI - AP - DD - PP/Trop. Plant Pathol./2019 -  -  - DIS