Plum Pox Virus Strain C Isolates Can Reduce Sour Cherry Productivity.

Anna Sheveleva,Tatiana Gasanova,Peter Ivanov,Gennady Osipov,Sergei Chirkov

doi:10.3390/plants10112327

Abstract

The impact of plum pox virus (PPV) on sour cherry (Prunus cerasus L.) productivity has been studied by comparing the yield of PPV-infected and PPV-free fruit-bearing trees. A total of 152 16- to 17-year-old trees of nine cultivars and hybrids were surveyed in the production orchards (cultivar collection and hybrid testing plots) in the Republic of Tatarstan, Russia. Sixty trees tested positive for PPV using ELISA and RT-PCR. Among them, 58 PPV isolates belonged to the strain C and the other 2 isolates to the strain CV. For the cultivars Sevastyanovskaya, Shakirovskaya, hybrids 88-2 and 80-8, the average (2012 to 2019) productivity of infected trees was 38% to 45% lower than for PPV-free trees of the same cultivar or hybrid. No ilarviruses (prunus necrotic ringspot virus, prune dwarf virus, apple mosaic virus, American plum line pattern virus) were detected in PPV-infected trees, suggesting that reduced cherry productivity was attributed to the PPV infection. Thus, it was shown for the first time that PPV can reduce the productivity of at least some sour cherry cultivars and hybrids, and strain C isolates are responsible for crop losses.

Highlights

Plants 2021, 10, 2327. https://Sour cherry (Prunus cerasus L.) and sweet cherry (P. avium L.) are economically important crops in many regions of the world, especially in Europe, the Mediterranean basin, the Middle East, and North America [1]
No ilarviruses were detected in plum pox virus (PPV)-infected trees, suggesting that reduced cherry productivity was attributed to the PPV infection
The study was performed at the Tatar zonal experimental station of horticulture (TZES)

Summary

Introduction

Sour cherry (Prunus cerasus L.) and sweet cherry (P. avium L.) are economically important crops in many regions of the world, especially in Europe, the Mediterranean basin, the Middle East, and North America [1]. Over 30 viruses and viroids have been found on cherry [2,3,4]. Ilarviruses from the genus Ilarvirus in the family Bromoviridae are prevalent viruses infecting sour and sweet cherry. The most common ilarviruses are prunus necrotic ringspot virus (PNRSV), prune dwarf virus (PDV), and apple mosaic virus (ApMV) [2,4,5,6]. Typical symptoms are chlorotic ringspots on leaves and fruits, yellow line patterns and rugose mosaics, many trees often remain symptomless. Ilarviruses can cause significant yield loss, decreasing the growth of fruits and delaying fruit maturity [5]

Objectives

Methods

Results

Discussion

Conclusion