The Viruses in Gladiolus hybribus cultivated in Korea 2. Broad Bean Wilt Virus, Cucumber Mosaic Virus and Tobacco Rattle Virus
1998
Park In Sook | Kim Kiu Weon Dept. of Horticulture, Yeungnam University, Kyungsan 712-749 (Korea Republic)
Galdioli (Gladiolus hybridus) showing flower colour breaking leaf mosaics, notched leaf, and dwarfing or lack of visible symptoms were collected from gladioli growing greas in Taegu and Kyungpook province, Korea. The three viruses isolated from the naturally infected gladioli were identified as broad bean wilt virus (BBWV), cucumber mosaic virus (CMV), and tobacco rattle virus (TRV) by their host range, immunosorbent electron microscopy (ISEM), enzyme-linked immunosorbent assay (ELISA), direct tissue blotting immunoassay (DTBIA), and intracellural symptoms. By DTBIA and ISEM, TRV was detected in gladiolus showing notched leaf, while CMV was frequently detected in gladioli with dwarfing, color breaking and malformation of flowers. BBWV was also often detected in many symptomless gladiolus plants, but TRV was detected in notched-leaf of gladiolus. Electron microscopic examination of negatively stained preparations showed that BBWV and CMV are spherical particles of 28 nm and 30 nm in diameter, and TRV is rigid rod-shaped particles of 40~200 nm in length. The rigid rod-shaped virus particles reacted positively with TRV antiserum in ISEM and DTBIA, respectively.
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