Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz - Journal of Plant Diseases and Protection (2003) 110, p. 96 (Pospieszny et al.)

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H. Pospieszny, N. Borodynko and M. Palczewska (2003)
Beet ringspot virus naturally infecting black locust (Robinia pseudoacacia)
Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz - Journal of Plant Diseases and Protection 110 (1), 96-96
1st Conf. Intern. Working Groups on Legume and Vegtable Viruses, Bonn, Germany 4-9 Aug. 2002
Abstract: In the natural infection of black locust (Robinia pseudoacacia) in Poland, there are many viruses belonging to various genera, but cucumoviruses and nepoviruses are the most frequent. Isolates identified as Tomato black ring virus (TBRV) on the basis of their serological properties have been predominant among nepoviruses. Surprisingly, taking into consideration serological and biological as well as biochemical properties, there were not even two identical isolates. The most significant differences were observed in the case of serological properties. Until 1999, TBRV was represented by two main serotypes, namely TBRV-ED and TBRV-S (HARRISON 1958). However, presently isolates of TBRV-S constitute a new species, which is referred to as Beet ringspot virus, BRSV (FAUQUET and MAYO 1999). Using antisera to both serotypes (a kind gift of Dr. O. Le Gall, France) in ELISA, some groups of isolates reacting with only one of the two antisera were identified. Finally, we classified isolates that reacted only with TBRV-S antiserum as BRSV. Subsequent studies showed that there were some slight differences among BRSV isolates but they did not essentially influence detection of the virus by ELISA. There were also differences in disease symptoms, dependent, among others, on plant species but they were variable and very often disappeared as characteristic for nepovirus infections. For the aforementioned reasons, they have been of limited diagnostic value so far. RNA analyses showed that the genomic RNAs of the BRSV isolates were not accompanied by satellite RNAs, in contrast to TBRV. To our knowledge, this is the first report on the occurrence of BRSV in Poland.
Database assignments for author(s): Natasza Borodynko, Henryk Pospieszny

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Beet ringspot virus Robinia (crop) Poland