Abstract
Abstract Grapevine rupestris stem pitting associated virus (GRSPaV) is one of the most widely distributed viruses; even so, little is known about its effect on Vitis vinifera . To provide new insights, the effects of single and mixed GRSPaV infections on the V. vinifera cultivar “Cabernet Sauvignon” were studied by evaluating growth parameters, such as measurements of the total plant length, the number and distance of internodes and the number of leaves per shoot. In addition, parameters relating to gas exchange, i.e ., the stomatal conductance, net photosynthetic rate, internal CO 2 concentration and leaf transpiration, were also assessed. All the measurements were performed in one- and two-year-old plants with a single GRSPaV infection or mixed infections of GRSPaV and Grapevine fanleaf virus (GFLV). The results show that the plant phytosanitary status did not significantly alter the growth and gas exchange parameters in one-year-old plants. However, in two-year-old plants, single GRSPaV infections increased shoot elongation, which was accompanied by the overexpression of genes associated with the gibberellic acid response pathway. The gas exchange parameters of these plants were negatively affected, despite exhibiting higher LHCII gene expression. Plants with mixed infections did not have modified growth parameters, although they presented a greater reduction in the primary photosynthetic parameters evaluated with no change in LHCII expression. The results presented here confirm the co-evolution hypothesis for V. vinifera and GRSPaV during the early stages of plant development, and they provide new evidence about the effects of GRSPaV and GFLV co-infections on the “Cabernet Sauvignon” cultivar.
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Claims 8
Claim · model-written summary
In one-year-old plants, GRSPaV phytosanitary status did not significantly alter growth and gas exchange parameters
- Taxon
- V. vinifera
Vitis viniferae1 - Material
- Cabernet Sauvignone1
- Treatment
- plant phytosanitary statuse2
- Outcome
- growth and gas exchange parameterse2
- Direction
- no_changeinferrede2
- Qualifier
- one-year-old plantse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effects of single and mixed GRSPaV infections on the V. vinifera cultivar “Cabernet Sauvignon” were studied”
e2“The results show that the plant phytosanitary status did not significantly alter the growth and gas exchange parameters in one-year-old plants”
Claim · model-written summary
In two-year-old plants, single GRSPaV infection increased shoot elongation
- Taxon
- V. viniferaVitis viniferae1
- Material
- Cabernet Sauvignone1
- Treatment
- single GRSPaV infectionse2
- Interactor
- GRSPaVGrapevine rupestris stem pitting-associated viruse2pathogen
- Outcome
- shoot elongatione2
- Direction
- increasede2
- Qualifier
- two-year-old plantse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effects of single and mixed GRSPaV infections on the V. vinifera cultivar “Cabernet Sauvignon” were studied”
e2“However, in two-year-old plants, single GRSPaV infections increased shoot elongation”
Claim · model-written summary
Shoot elongation in single-infected two-year-old plants was accompanied by overexpression of genes of the gibberellic acid response pathway
- Taxon
- V. viniferaVitis viniferae1
- Gene
- genes associated with the gibberellic acid response pathwaye2
- Outcome
- overexpression of genese2
- Direction
- increaseinferrede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effects of single and mixed GRSPaV infections on the V. vinifera cultivar “Cabernet Sauvignon” were studied”
e2“accompanied by the overexpression of genes associated with the gibberellic acid response pathway”
Claim · model-written summary
In two-year-old plants with single GRSPaV infection, gas exchange parameters were negatively affected
- Taxon
- V. viniferaVitis viniferae1
- Material
- Cabernet Sauvignone1
- Treatment
- single GRSPaV infectionse2
- Outcome
- gas exchange parameterse3
- Direction
- negatively affectede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effects of single and mixed GRSPaV infections on the V. vinifera cultivar “Cabernet Sauvignon” were studied”
e2“However, in two-year-old plants, single GRSPaV infections increased shoot elongation”
e3“The gas exchange parameters of these plants were negatively affected, despite exhibiting higher LHCII gene expression”
Claim · model-written summary
In two-year-old plants with single GRSPaV infection, LHCII gene expression was higher
- Taxon
- V. viniferaVitis viniferae1
- Treatment
- single GRSPaV infectionse2
- Gene
- LHCIIe3
- Outcome
- LHCII gene expressione3
- Direction
- highere3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effects of single and mixed GRSPaV infections on the V. vinifera cultivar “Cabernet Sauvignon” were studied”
e2“However, in two-year-old plants, single GRSPaV infections increased shoot elongation”
e3“despite exhibiting higher LHCII gene expression”
Claim · model-written summary
Plants with mixed infections did not have modified growth parameters
- Taxon
- V. viniferaVitis viniferae1
- Treatment
- mixed infectionse2
- Outcome
- growth parameterse2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effects of single and mixed GRSPaV infections on the V. vinifera cultivar “Cabernet Sauvignon” were studied”
e2“Plants with mixed infections did not have modified growth parameters”
Claim · model-written summary
Plants with mixed infections had a greater reduction in primary photosynthetic parameters
- Taxon
- V. viniferaVitis viniferae1
- Treatment
- mixed infectionse2
- Outcome
- primary photosynthetic parameterse3
- Direction
- greater reductione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effects of single and mixed GRSPaV infections on the V. vinifera cultivar “Cabernet Sauvignon” were studied”
e2“Plants with mixed infections did not have modified growth parameters”
e3“they presented a greater reduction in the primary photosynthetic parameters evaluated”
Claim · model-written summary
Plants with mixed infections showed no change in LHCII expression
- Taxon
- V. viniferaVitis viniferae1
- Treatment
- mixed infectionse2
- Gene
- LHCIIe3
- Outcome
- LHCII expressione3
- Direction
- no changee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effects of single and mixed GRSPaV infections on the V. vinifera cultivar “Cabernet Sauvignon” were studied”
e2“Plants with mixed infections did not have modified growth parameters”
e3“with no change in LHCII expression”
The same questions in other papers
infection · molecular: expression · Vitis vinifera (wine grape)Positive and negative results
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- positive
- positive
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See all 6 papers →infection · physiology: gas exchange · Vitis vinifera (wine grape)Results agree
1 paper in the same direction as this paper
- negative
infection · growth · Vitis vinifera (wine grape)Results agree
1 paper in the same direction as this paper
- negative
infection · physiology: photosynthesis · Vitis vinifera (wine grape)Results agree
1 paper in the same direction as this paper
- negative
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.