Data/hora: 01/06/2024 13:41:39

Biblioteca(s): | Embrapa Hortaliças; Embrapa Semiárido.
Data corrente: | 26/11/2018
Data da última atualização: | 08/07/2022
Autoria: | MACEDO, M. A.; INOUE-NAGATA, A. K.; SILVA, T, N. Z.; FREITAS, D. M. S.; REZENDE, J. A. M.; BARBOSA, J. C.; MICHEREFF FILHO, M.; NASCIMENTO, A. R.; LOURENÇÃO, A. L.; BERGAMIN FILHO, A.
Afiliação: | M. A. MACEDO; ALICE KAZUKO INOUE NAGATA, CNPH; T. N. Z. SILVA; DEBORA MARIA SANSINI FREITAS, CPATSA; J. A. M. REZENDE; J. C. BARBOSA; MIGUEL MICHEREFF FILHO, CNPH; A. R. NASCIMENTO; A. L. LOURENÇÃO; A. BERGAMIN FILHO.
Título: | Temporal and spatial progress of the diseases caused by the crinivirus tomato chlorosis virus and the begomovirus tomato severe rugose virus in tomatoes in Brazil.
Ano de publicação: | 2019
Fonte/Imprenta: | Plant Pathology, v. 68, n. 1, p. 72-84, jan. 2019.
DOI: | 10.1111/ppa.12920
Idioma: | Inglês
Conteúdo: | Efficient management of whitefly-borne diseases remains a challenge due to the lack of a comprehensive understanding of their epidemiology, particularly of the diseases tomato golden mosaic and tomato yellowing. Here, by monitoring 16 plots in four commercial fields, the temporal and spatial distribution of these two diseases were studied in tomato fields in Brazil. In the experimental plots these diseases were caused by tomato severe rugose virus (ToSRV) and tomato chlorosis virus (ToCV), respectively. The incidence of each virus was similar in the plots within a field but varied greatly among fields. Plants with symptoms for both diseases were randomly distributed in three of four spatial analyses. The curves representing the progress of both diseases were similar and contained small fluctuations, indicating that the spread of both viruses was similar under field conditions. In transmission experiments of ToSRV and ToCV by Bemisia tabaci MEAM1 (former biotype B), these viruses had a similar transmission rate in single or mixed infections. It was then shown that primary and secondary spread of ToCV were not efficiently controlled by insecticide applications. Finally, in a typical monomolecular model of disease pro- gress, simulation of the primary dissemination of ToSRV and ToCV showed that infected plants were predominantly ran-domly distributed. It is concluded that, although the manner of vector transmission differs between ToSRV (persistent) and ToCV (semipersistent), the main dispersal mechanisms are most probably similar for these two diseases: primary spread is the predominant mechanism, and epidemics of these diseases have been caused by several influxes of viruliferous whiteflies.
Palavras-Chave: | Manejo da doença; Whitefly.
Thesagro: | Doença; Inseto; Mosca Branca; Praga de Planta; Tomate.
Thesaurus Nal: | Plant diseases and disorders; Solanum lycopersicum; Tomatoes.
Categoria do assunto: | H Saúde e Patologia
Registro original: | Embrapa Hortaliças (CNPH)

Exemplares:

CPATSA - (57783-1) - UPC - AP - DD -  -  -  - DIS
CNPH - (41754-1) - UPC - AP - DD -  -  -  - DIS