New data on geminiviruses
By browsing through the abstracts of papers presented at the APS/ESA Joint Annual Meeting (Las Vegas, US, 1998-11-08/12), the EPPO Secretariat has extracted the following data concerning geminiviruses*1.
- Bean calico mosaic geminivirus which was found on bean in Sonora, Mexico, is considered as a distinct virus. It is most closely related to the geminivirus cluster including squash leaf curl, cabbage leaf curl and Texas pepper geminiviruses (S11a).
- Koch's postulates have been verified for chino del tomate geminivirus. It is a distinct geminivirus with closest affiliation to the Abutilon mosaic geminivirus cluster (S11b).
- Tabasco pepper plant samples showing leaf distortion and yellow mottle symptoms were collected from several farms in the south-west region of Costa Rica. Molecular studies showed that it could possibly be a new geminivirus. It is transmitted by Bemisia tabaci biotype B. It has been tentatively called pepper yellow mottle geminivirus (S21).
- Three whitefly-transmitted geminiviruses were identified on tomatoes in Puerto Rico during 1991-1998. These viruses are transmitted by Bemisia tabaci biotype B.
- Merremia mosaic geminivirus (previously known to cause a yellow mosaic on the weeds Merremia quinquefolia and M. aegyptia)
- Potato yellow mosaic geminivirus
- Tomato mottle geminivirus (S42).
* For more information on tomato geminiviruses in the Americas see also EPPO RS 98/044.
Brown, J.K.; Ostrow, K.M.; Idris, A.M.; Stenger, D.C. (1998) Biotic, molecular and phylogenetic characterization of bean calico mosaic geminivirus. S11 (a).
Brown, J.K.; Ostrow, K.M.; Idris, A.M.; Stenger, D.C. (1998) Molecular characterization and Koch's postulates for chino del tomate geminivirus with purified virions and full-length infectious clones. S11 (b).
de la Torre, R.; Lotrakul, P.; Valverde, R.; Sim, J.; Gomez, A. (1998) Identification of a geminivirus infecting pepper in Costa Rica. S21.
Idris, A.M.; Lee, S.H.; Lewis, E.A.; Bird, J.; Brown, J.K. (1998) Three tomato-infecting begomoviruses from Puerto Rico. S42.
Abstracts of papers presented at the APS/ESA Joint Annual Meeting, Las Vegas, US, 1998-11-08/12. Phytopathology, 88(9), Supplement, 144 pp.