Blueberry shoestring virus
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Author(s): Mark Longstroth
Source: Wikimedia Commons
Author(s): Martin et al.
Source: Viruses (2012), 4, p. 2839
Blueberry shoestring virus (BlSSV)
This virus affects blueberries in parts of North America and was first described in 1950. It can result in yield losses or a reduction of marketable berries. The symptoms include red streaking of the twigs in the spring, reddish narrow strapped leaves, reddish oakleaf patterns on normally shaped leaves (red vein-banding), as well as red-purple discoloration on undeveloped berries (e.g. see Martin et al., 2012). The symptoms often appear only on parts of a plant and plants can be asymptomatic for several seasons.
The virus can be transmitted mechanically or by the aphid Illinoia pepperi. BlSSV is the only Sobemovirus that is known to be transmissable by an aphid. Resistant cultivars are unknown, but the infection rates differs between some cultivars (Acquaah et al., 1995).
