First report of Iris yellow spot virus on Onion in Uruguay

Dublin Core

Título

First report of Iris yellow spot virus on Onion in Uruguay

Tema

VIRUS
URUGUAY
CEBOLLAS
BIBLIOGRAFIA NACIONAL QUIMICA
2010

Abstract

From October to December 2005, onion (Allium cepa) plants in seed-production fields in south Uruguay (Canelones) had symptoms suggestive of those caused by Iris yellow spot virus (IYSV; genus Tospovirus, family Bunyaviridae). Symptoms included diamond-shaped lesions on seed stalks (scapes), each 1 to 5 cm long with a necrotic border, green center, and sometimes a second necrotic area in the center of the diamond (2,3). Necrotic lesions with more irregular shape were also associated with diseased plants. In 2006, scape samples with these symptoms were collected from four onion seed crops and assayed for IYSV using an IYSV-specific antiserum (Agdia Inc., Elkhart, IN) in a double-antibody sandwich-ELISA. IYSV was detected in all four onion seed crops monitored in 2006. IYSV incidence, expressed as the number of plants with symptoms, ranged from 87% identity only with IYSV N protein sequences in GenBank. Because of the presence of IYSV in Brazil, Chile, and Peru, this first documentation, to our knowledge, of IYSV in onion crops in Uruguay suggests that the threat of IYSV to onion is increasing in South America.

Autor

Colnago, P
Achigar, R
Peluffo, S
González Idiarte, H
Galván, G. A.

Fuente

Plant disease v. 94, no. 6, 2010. -- p. 786

Editor

American Phytopathological Society

Fecha

2010

Formato

PDF

Idioma

Inglés

Tipo

Artículo

Identificador

http://dx.doi.org/10.1094/PDIS-94-6-0786A

Cobertura

Uruguay

Document Item Type Metadata

Original Format

PDF
Fecha de agregación
December 2, 2014
Colección
Bibliografía Nacional Química
Tipo de Elemento
Document
Citación
Colnago, P, “First report of Iris yellow spot virus on Onion in Uruguay,” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed November 21, 2019, http://riquim.fq.edu.uy/items/show/2120.
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