Abstract Background Most plant viruses rely on vectors for their transmission and spread. One of the outstanding biological questions concerning vector-pathogen-symbiont multi-trophic interactions is potential involvement vector symbionts in virus process. Here, we used a multi-factorial system containing non-persistent virus, cucumber mosaic (CMV), its primary vector, green peach aphid, Myzus ...

The tobacco aphid, Myzus persicae nicotianae is an economically important pest of tobacco. Damage is through direct injury by sucking sap of infested plants as well as reduction of the quality of the leaf by leaving honey-dew which encourages the subsequent growth of sooty-mould. In addition to this, aphids also transmit economically important virus diseases such as the bushy-top virus, the alf...

aphids in unsprayed canola (brassica napus linnaeus) fields in isfahan province (central iran) were sampled for two growing seasons, 2011-2013. sampling unit was a whole plant and 20 plants were sampled weekly. in the laboratory, heat-extracting and sub-sampling techniques were used to estimate the density of aphids. to determine the relationship between population growth rate of the aphids and...