Epidemiology of Xiphinema americanum and Tomato ringspot virus on Red Raspberry, Rubus idaeus

Population dynamics of Xiphinema americanum and transmission of Tomato ringspot virus (ToRSV) were studied in a red raspberry field in Washington State. Population densities of X. americanum were highest in the winter, lowest in the summer, and were correlated with precipitation (R2 = 0.42). All nem...

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Veröffentlicht in:Plant disease. - 1997. - 92(2008), 3 vom: 11. März, Seite 364-371
1. Verfasser: Pinkerton, J N (VerfasserIn)
Weitere Verfasser: Kraus, J, Martin, R R, Schreiner, R P
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2008
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article dagger nematode nepovirus vector
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520 |a Population dynamics of Xiphinema americanum and transmission of Tomato ringspot virus (ToRSV) were studied in a red raspberry field in Washington State. Population densities of X. americanum were highest in the winter, lowest in the summer, and were correlated with precipitation (R2 = 0.42). All nematode stages were present throughout the year. Gravid females were observed only in the spring, indicating one generation per year. The sequence of the coat protein of the ToRSV from this field was similar to those of other raspberry isolates from the Pacific Northwest. Cucumber seedlings were planted in soil collected monthly from the field and were evaluated for nematode transmission of ToRSV by enzyme-linked immunosorbent assay (ELISA). The proportion of assay plants infected with ToRSV was negatively correlated with nematode densities (R2 = 0.31). In another study, ToRSV was detected by ELISA in fine roots of raspberry plants 5 months after planting in field soil infested with viruliferous nematodes, in all subterranean portions of plants after 12 months, and in all aerial portions the second year. The rate of spread of ToRSV in a raspberry field was 70 cm per year. These results suggest that the rate of ToRSV spread is limited by systemic spread of virus in plants when nematode-infested soil is not transported in the field 
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700 1 |a Schreiner, R P  |e verfasserin  |4 aut 
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