Abstract
The objective of this study was to investigate the response of the grapevine variety ‘Tribidrag’ to virus infection over two vegetation seasons. Virus-free plants were greenhouse cultivated and green grafted with five different virus inocula composed of grapevine leafroll-associated virus 3 (GLRaV-3) singly or in coinfection with other most economically important grapevine viruses. Changes in nutrient status and photosynthesis-related parameters, along with symptom development, were measured. Using the quantitative PCR method, the relative concentration of five selected Vitis genes was determined. Cluster analysis and ANOVA revealed the reduction in phosphorus concentration (P) and photosynthesis-related parameters in infected plants in both seasons, even in the absence of symptom expression, indicating P and assimilation rate (Photo (A)) as stable markers of virus infection. Plants infected with inoculum Y composed of five different viruses provoked major significant changes in the first season while, in the second, fewer changes were measured. The sucrose synthase 3 gene was upregulated in infected plants confirming disturbed sugar metabolism related to virus-induced stress. This study showed that virus-induced changes in ‘Tribidrag’ plants even in the absence of symptoms are dependent on plant age, as well as on the composition of virus inocula.
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Claims 5
Claim · model-written summary
Infected plants had reduced phosphorus concentration in both seasons, including without symptoms.
- Taxon
- plantsViridiplantaee0
- Treatment
- infected plantse0
- Outcome
- phosphorus concentration (P)e0
- Direction
- reductione0
- Qualifier
- in both seasons, even in the absence of symptom expressione0
Not reportedComparator
Verbatim
e0“reduction in phosphorus concentration (P) and photosynthesis-related parameters in infected plants in both seasons, even in the absence of symptom expression”
Claim · model-written summary
Infected plants had reduced photosynthesis-related parameters in both seasons, even without symptoms.
- Taxon
- plantsViridiplantaee0
- Treatment
- infected plantse0
- Outcome
- photosynthesis-related parameterse0
- Direction
- reductione0
- Qualifier
- in both seasons, even in the absence of symptom expressione0
Not reportedComparator
Verbatim
e0“reduction in phosphorus concentration (P) and photosynthesis-related parameters in infected plants in both seasons, even in the absence of symptom expression”
Claim · model-written summary
Inoculum Y provoked major significant changes in the first season and fewer changes in the second.
Verbatim
e0“Plants infected with inoculum Y composed of five different viruses provoked major significant changes in the first season while, in the second, fewer changes were measured”
Claim · model-written summary
Sucrose synthase 3 was upregulated in infected plants.
- Taxon
- plantsViridiplantaee0
- Treatment
- infected plantse0
- Gene
- sucrose synthase 3e0
- Outcome
- sucrose synthase 3 genee0
- Direction
- upregulatede0
Not reportedComparator
Verbatim
e0“The sucrose synthase 3 gene was upregulated in infected plants confirming disturbed sugar metabolism related to virus-induced stress”
Claim · model-written summary
Virus-induced changes depended on plant age and inoculum composition even without symptoms.
Not reportedDirection
Verbatim
e0“virus-induced changes in ‘Tribidrag’ plants even in the absence of symptoms are dependent on plant age, as well as on the composition of virus inocula”
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See all 5 papers →infection · nutrient: content · Viridiplantae (plants)Results agree
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infection · physiology: photosynthesis · Viridiplantae (plants)Results agree
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.