Southern rice black-streaked dwarf virus
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Authors: Zhenchao Wang, Dandan Yu, Xiangyang Li, Mengjiao Zeng, Zhuo Chen, Liang Bi, Jiaju Liu, Linhong Jin, Deyu Hu, Song Yang and Baoan Song
Source: Viruses (2012) vol. 4(1), p. 175
Southern rice black-streaked dwarf virus (SRBSDV)
The virus is found in eastern Asia where it infects rice and maize. Serious epidemics on rice have been reported from southern China and Vietnam. It was estimated that 30 million ha were affected in 2009 and 120 million in 2010. The symptoms on rice include dwarfing, dark green leaves, twisted at the tips and small white waxy galls along the veinlets of the leaves. In plants co-infected with the Rice ragged stunt virus both viruses accumulate at a higher level, resulting in more severe symptoms.
SRBSDV is transmitted by the white-backed planthopper (Sogatella furcifera) in a circulative manner. S. furcifera hoppers remain infective for life. When they feed on infected rice plants they produce more macropterous adults and also slightly more offspring (Zhang et al., 2014).
The virus particles are icosahedral, double-layered virions with a diameter of approximately 70 nm. The genome consists of ten double-stranded RNA (dsRNA) segments named S1 to S10 and ranging in size from 1.8 to 4.5 kb.
For a review of this virus see Lv et al. (2017).
See also the related Rice black streaked dwarf virus.
