The Interaction Between Prunus Necrotic Ringspot Virus and Prune Dwarf Virus in Peach Stunt Disease

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“…Smith et al, (2009) also observed chlorotic and necrotic spots on the leaves of sweet cherry trees infected by PNRSV but the centres of these necrotic spots often disappeared, affording a shothole effect. The presence of PNRSV was also reported by (Scott 2018) in many woody hosts and observed that the infection initially causes shock later developing chronic symptoms. Symptoms can be classified as chlorosis, necrosis, leaf deformity, stunting and shot holes.…”

“…Scott (2018) studied the effect of prunus necrotic ring spot virus on growth, yield and quality of peach and found a reduction in tree growth between 12 to 70 percent and yield loss of 5 to 70 percent with fruits having lower soluble sugar content. PNRSV has also been reported to cause significant crop losses depending on the host (15 percent yield loss in sweet cherry and up to 100 percent in peach) and can reduce bud-take in nurseries, decrease growth of fruit from 10 to 30 percent and fruit yield reduction from 20 to 60 percent with delayed fruit maturity (Pallas et al, 2012).…”

“…Similar type of sero-surveys conducted by Kapoor and Handa (2017 b) in peach, almond, cherry, plum, nectarine and apricot resulted the presence of PNRSV in all the hosts tested except for apricot and plum. Scott et al, (2001) conducted field trails to check the effects of PNRSV and PDV on peach and conclusively proved it to be Peach stunt disease. The integrity of the viral treatments was assessed using ELISA.…”

Inter-laboratory evaluation of a duplex RT-PCR method using crude extracts for the simultaneous detection of Prune dwarf virus and Prunus necrotic ringspot virus

“…PDV causes necrotic and chlorotic spots on cherry leaves and stunting on peach and plum trees (Desvignes 1999). It has been reported to cause about 43% losses in fruit yield (Scott et al 2001). Although PNRSV infections may be latent, growth reductions ranging from 12% to 33% have been estimated (Albertini et al 1993;Pine 1964).…”

“…Although PNRSV infections may be latent, growth reductions ranging from 12% to 33% have been estimated (Albertini et al 1993;Pine 1964). A virus combination between PDV and PNRSV known to induce peach stunt infection (PSD) may occur showing premature defoliation, bark splitting and increased watersprout production, with fruit yields reduced up to 60% (Scott et al 2001). Consequently the use of healthy plant material is a requirement to prevent virus spread in woody crops.…”