Melon Rugose Mosaic Virus: Characterization of an Isolate from Sudan and Seed Transmission in Melon | Zendy

H. A. Mahgoub | Zendy; Catherine WipfScheibel | Zendy; Brigitte Delécolle | Zendy; Michel Pitrat | Zendy; Gasim Dafalla | Zendy; Hervé Lecoq | Zendy

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Melon Rugose Mosaic Virus: Characterization of an Isolate from Sudan and Seed Transmission in Melon

Author(s) -

H. A. Mahgoub,

Catherine WipfScheibel,

Brigitte Delécolle,

Michel Pitrat,

Gasim Dafalla,

Hervé Lecoq

Publication year - 1997

Publication title -

plant disease

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.663

H-Index - 108

eISSN - 1943-7692

pISSN - 0191-2917

DOI - 10.1094/pdis.1997.81.6.656

Subject(s) - melon , biology , cucumis , cucumber mosaic virus , virus , plant virus , botany , cucurbitaceae , mosaic virus , horticulture , virology

Melon rugose mosaic virus (MRMV) was isolated from snake cucumber (Cucumis melo var. flexuosus) in the Kassala region of Sudan in 1993. The host range of the virus was mostly limited to cucurbits, where it induced severe mosaic and leaf deformations. Cytopathological studies revealed severe chloroplast alterations, including vesicles at their periphery and the tendency to aggregate, which are typical of tymovirus infections, providing further evidence that MRMV is a tentative member of the genus Tymovirus. In melon and snake cucumber, MRMV was found to be seed transmitted at rates of 0.9 and 3.8%, respectively. Seed dissection experiments revealed that the virus could be detected in the seed coat, papery layer, and embryo. Seed disinfection treatments did not reduce seed transmission rates, which suggests an internal transmission. A preliminary screening for resistance in melon revealed some resistance in two out of 367 accessions tested.

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