More data about this group.
Last database update for these data: 2006-12-20 - Data extracted on 2009-04-14 from the database.
| Field | Value |
|---|---|
| Document type | Journal article: paper |
| Language | English |
| Year | 1990 |
| Authors | Kaper, J. M. Gallitelli, D. Tousignant, M. E. |
| Title | Identification of a 334-ribonucleotide viral satellite as principal aetiological agent in a tomato necrosis epidemic |
| Source | Res. Virol. |
| Volume | 141 |
| Issue | 1 |
| Pages | 81-95 |
| Abstract | Cucumber mosaic virus (CMV), a widespread and economically important virus of vegetable crops, often contains a satellite RNA, here designated CARNA-5 (for CMV-associated RNA 5). Viral satellites are small nucleic acids that are sequence-unrelated to, but replicatively dependent upon, the viral genome. They essentially are molecular parasites of their helper viruses, and thereby frequently modulate viral symptom expression. Some isolates of CARNA-5 change normally moderate CMV symptoms in tomato into a lethal disease named tomato necrosis; others ameliorate CMV symptoms in tomato and other important crop plants. Here we report on the identification and molecular characterization of a 334-nucleotide necrogenic CARNA-5 isolated from tomato fields in southern Italy, where a massive outbreak of lethal necrosis occurred in the summer of 1988. This is the first time that direct evidence is given for the involvement of a viral satellite in a crop disease of epidemic scale. The possible molecular interrelationships between plant, virus, satellite and other factors that influence the satellite-induced symptom modulation underlying such a catastrophe are discussed. |
| Web page | Pubmed |
| ISSN | 0923-2516 |
| Descriptors | Fruit Mosaic Viruses isolation, purification and pathogenicity Plant Diseases Viral RNA isolation and purification |