Dissecting the genetic basis of resistance to Soil-borne cereal mosaic virus (SBCMV) in durum wheat by bi-parental mapping and GWAS.

Soil-borne cereal mosaic virus (SBCMV), the causative agent of wheat mosaic, is a Furovirus challenging wheat production all over Europe. Differently from bread wheat, durum wheat shows greater susceptibility and stronger yield penalties, so identification and genetic characterization of resistance sources are major targets for durum genetics and breeding. The Sbm1 locus providing high level of resistance to SBCMV was mapped in bread wheat to the 5DL chromosome arm (Bass in Genome 49:1140-1148, 2006).

Agroinoculation of Beet necrotic yellow vein virus cDNA clones results in plant systemic infection and efficient Polymyxa betae transmission.

Agroinoculation is a quick and easy method for the infection of plants with viruses. This method involves the infiltration of tissue with a suspension of Agrobacterium tumefaciens carrying binary plasmids harbouring full-length cDNA copies of viral genome components. When transferred into host cells, transcription of the cDNA produces RNA copies of the viral genome that initiate infection.

Resistance to Soil-borne cereal mosaic virus in durum wheat is controlled by a major QTL on chromosome arm 2BS and minor loci.

Soil-borne cereal mosaic (SBCM) is a viral disease, which seriously affects hexaploid as well as tetraploid wheat crops in Europe. In durum wheat (Triticum durum Desf.), the elite germplasm is characterized by a wide range of responses to SBCMV, from susceptibility to almost complete resistance.

Characterization of a filamentous virus from Bermuda grass and its molecular, serological and biological comparison with Spartina mottle virus.

Bermuda grass with mosaic symptoms have been found in many parts of Iran. No serological correlation was observed between two isolates of this filamentous virus and any of the members of the family Potyviridae that were tested. Aphid transmission was demonstrated at low efficiency for isolates of this virus, whereas no transmission through seed was observed.

First Report of Strawberry vein banding virus on Strawberry in Italy.

In the summers of 2007 and 2008, diseased strawberry plants (Fragaria x ananassa Duch.) were observed in production fields in Ferrara and Forlì-Cesena districts (Emilia-Romagna Region) in northern Italy. Plants exhibited poor growth, leaf chlorosis, decline, and reduced fruit production.