Sources and strains of streak virus infecting graminaceous hosts
| MSI99P0398 | |
| Ricaud, C. Felix, S. | |
| Sources and strains of streak virus infecting graminaceous hosts | |
| Proc. int. Cong. Plant Path. 3, Munich, August 1978 | |
| Book chapter | |
| 1979 | |
| p. 23 | |
| En | |
| En | |
| Streak virus disease was identified by electron microscopy and/or transmission tests with the vector Cicadulina mbila in nine grass hosts in addition to maize and sugarcane. Cross-infection tests with isolates from eight hosts revealed the existence of several strains of the virus, some of which are more closely related than others, and indicated the role of the various susceptible grass weeds as virus reservoirs that could lead to epiphytotics in the two crop plants. Coyx lachryma jobi and Brachiaria reptens could be important in disease epidemics in maize. Isolates from the two weeds and from maize, following their natural infection, readily infect any of the three plants causing symptoms that are indistinguishable in any one of them. These closely related oridentical strains can also cause severe disease in some sugarcane varieties, but the symptoms are unlike those caused by the typical cane strain, which did not infect maize. This last exists naturally in the grass Cenchrus echinatus, which is also a universal acceptor of all strains of the virus. Digitaria horizontalis, Panicum maximum and Paspalum conjugatum do not play a role in spreading streak disease in maize and sugarcane. The strains they harbour are quite distinct from those infecting both these crop plants and are also distinct from one another. | |
| TRANSMISSION MAIZE SUGARCANE SUGARCANE STREAK VIRUS DISEASES PLANT VIRUSES | |
| MAURITIUS | |
| Sugarcane: Diseases and disease management | |
| Virus diseases: Streak | |
| 1992-02-22 | |
| En | |
| Mauritius Sugar Industry Research Institute | |
| PATH |