White yam (Dioscorea rotundata) plants exhibiting virus-like symptoms are co-infected with a new potyvirus and a new crinivirus in Ethiopia.

White yam (Dioscorea rotundata) plants collected from farmers' fields and planted at the Areka Agricultural Research Center, Southern Ethiopia, displayed mosaic, mottling, and chlorosis symptoms. To determine the presence of viral pathogens, an investigation for virome characterization was conducted by Illumina high-throughput sequencing. The bioinformatics analysis allowed the assembly of five viral genomes, which according to the ICTV criteria were assigned to a novel potyvirus (3 genome sequences) and a novel crinivirus (2 genome sequences).

Mycoviruses Increase the Attractiveness of for Fungivores and Suppress Production of the Mycotoxin Deoxynivalenol.

RNA viruses of the genera , , , and were found in a single isolate of . The genomes of the mitovirus, sclerotimonavirus, and partitivirus were assigned to previously described viruses, whereas the ambivirus genome putatively represents a new species, named 1 (FgAV1). To investigate the effect of mycoviruses on the fungal phenotype, the spontaneous loss of mycoviruses during meiosis and the transmission of mycoviruses into a new strain via anastomosis were used to obtain isogenic strains both with and without mycoviruses.

First report of strawberry polerovirus 1 in strawberry in Italy.

Strawberry (Fragaria × ananassa Duch.) was introduced in Sicily (Italy) in the 1930s in the small town of Maletto, on the slopes of Etna volcan, where it's currently cultivated in a total area of 30 ha. The French cv.