Plum pox virus as a stress factor in the vegetative growth, fruit growth and yield of plum (Prunus domestica) cv. ‘Cacanska Rodna’

Abstract

Plum pox virus as a stress factor in the vegetative growth, fruit growth and yield of plum (Prunus domestica) cv. 'Cacanska Rodna' Abstract During 2005, under the environmental conditions of Cacak (43°53'N; 20°21'E), western Serbia, the effect of Plum pox virus (PPV) on the phenology of vegetative shoot and fruit growth was investigated in a plum orchard of cv. 'Cacanska Rodna' including trees non-infected with PPV and those with infection and clearly visible symptoms, as verified by RT-PCR. The results showed that PPV did not affect the growth phenology of the vegetative shoot (length and thickness) and the fruit growth. However, it caused negative effects on the average length (22.31±0.28 cm in non-infected trees, 18.35± 0.07 cm in infected trees) and thickness (4.21± 0.03 mm in non-infected trees, 4.01±0.02 mm in infected trees) of vegetative shoots as well as on the average fruit weight (20.43±0.16 g in non-infected fruits, 17.58±0.18 g in infected fruits) and fruit dimensions. The greatest effect of PPV during the trial was the induction of a massive premature fruit drop and, consequently, a 52.94% decrease in total yields per tree (18.0±1.10 kg) and unit area (12.0± 0.89 t ha -1 ) in infected vs non-infected trees.

Sharka: The Past, The Present and The Future

“…The changes of expression of genes (increase of the following gene transcripts: including beta-1,3-glucanase, cytochrome-P450-like protein, cytochrome P450 monooxygenase, heat-shock protein 70, thioredoxin, alcohol dehydrogenase, catalase, cysteine protease inhibitor, translation factor EF-1 alpha, and pathogenesis-related protein (PRI)) in Pisum sativum L. PPV-infected plants support the ability of PPV to induce common stress responses in susceptible plants [335]. The recent studies focused on the changes in growth characteristics and yield of infected plants [336,337]. Similar results were demonstrated by Garcia-Ibarra et al, who investigated changes in protective mechanisms including antioxidant enzymes in peach infected by apple chlorotic leaf spot virus (ACLSV, Flexiviridae ).…”

Unfolding the secrets of plum pox virus: from epidemiology to genomics

“…Leaf symptoms include dark-light spots, rings and mosaics of various shapes and intensity, chlorosis or leaf deformation. The impact on the fruits of the susceptible genotypes, particularly in later stages of disease may be drastic -from deformation, discoloration and lowered sugar content to enhanced premature downfall (Milosevic et al, 2010). PPV as an object of extensive epidemiological and molecular research is one of the best studied potyviruses (Scholthof et al, 2011).…”

Agronomic properties and nutritional status of plum trees (Prunus domestica L.) influenced by different cultivars

“…Extensive growing technology, low unstable yields, low-quality fruit, multitude of cultivars, and PPV-induced problems are main distinctions in plum production in Serbia (Milosevic et al, 2010b). This has resulted in low yield per tree of 8.6 kg (Nenadović-Mratinić et al, 2007a).…”