Abstract
The beet western yellows virus (BWYV) was identified in sugar beet plants with leaf yellowing symptoms. When transmitted toSinapis alba L. the virus isolate caused severe symptoms of yellowing and violetting of the interveinal leaf tissue of this plant. By aphidsMyzus persicae (Sulz.) the virus isolate was transmitted toLactuca sativa L.,Raphanus sativus L. var.radicula Pers.,Baphanus sativus L. ssp.sativus L. ap., and toBrassica oleracea L. var.gemmifera DC. InLactuca sativa plants the virus induces a yellowing along with thickenning and brittleness of leaves and with mild dwarfing of the plants. InBaphanus sativus var.radicula andBaphanus sativus ssp.sativus plants it brings about a yellowing of the leaf margins with a change in consistency as was the case in lettuce, and inBrassica oleracea var.gemmifera it causes violet spots on the lower leaf sides. The transmission was proved in repeated experiments by a backtransmission to beet andSinapis alba and further transmission from beet toSinapis alba. The transmission of the virus isolate toVicia faba L.,Datura stramonium L., andPetunia hybrida hort. was unsuccessful. In the course of transmissions the isolate properties did not change. In its host range the virus resembles the Duffus’ strain 3 BWYV, isolated from beet in the U.S.A. This is the first characteristic of an Europian BWYV isolate, as obtained from naturally infected beet plants.
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Pálak, J. Occurrence of beet western yellows virus in sugar beet in Czechoslovakia. Biol Plant 21, 275–279 (1979). https://doi.org/10.1007/BF02902209
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DOI: https://doi.org/10.1007/BF02902209