A survey of tobacco viruses in tobacco crops and native flora in Greece |
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Authors: | Elisavet K Chatzivassiliou Konstantinos Efthimiou Elisseos Drossos Alexandra Papadopoulou Georgios Poimenidis Nikolaos I Katis |
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Institution: | (1) Plant Pathology Laboratory, Faculty of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece;(2) School of Biology, Laboratory of Systematic Botany and Phytogeography, Aristotle University of Thessaloniki, 54124, Greece;(3) National Agricultural Tobacco Research Institute, Drama, 66100, Greece |
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Abstract: | The most important tobacco producing areas in Greece were surveyed for virus presence, from 1997 to 2000. Tobacco seedlings or plants showing virus-like symptoms were randomly collected from seedbeds or fields, respectively, and tested by ELISA, and/or mechanical inoculation onto indicator plants. Potato
virus
Y (PVY), Cucumber
mosaic
virus (CMV) and Tobacco
mosaic
virus (TMV) were detected in all sampling areas, with TMV mainly found in oriental varieties. Tomato
spotted
wilt
virus (TSWV) consisted a serious endemic virus in Northern Greece (Thrace, Central and Eastern Macedonia), whereas Alfalfa
mosaic
virus (AMV) was mainly found in regions, where alfalfa was cultivated in the vicinity of tobacco crops. Eggplant
mottled
dwarf
virus (EMDV) was detected in several areas but always in very low incidence (<0.01%). Surveys were also conducted to assess the potential reservoir hosts of PVY, CMV and AMV among weeds collected from highly infected tobacco fields from 1998 to 2000. Among 3450 samples tested for PVY, plants from 17 species in 10 families were found infected. For CMV, 2891 weed samples were tested and 19 species in 12 families were positive. Assays for AMV infection were made on 961 samples and 12 species in 9 families were identified as hosts of this virus. |
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Keywords: | words: AMV arable weeds AYRSV CMV ELISA EMDV PVY survey TMV tobacco TRV TSWV |
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