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 CO2 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 9
Claim · model-written summary
Phytosanitary status did not significantly alter growth and gas exchange parameters in one-year-old grapevines.
- Taxon
- V. vinifera
Vitis viniferae1 - Organ / stage
- one-year-old plantse2
- Treatment
- phytosanitary statuse2
- Outcome
- growth and gas exchange 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"”
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
Single GRSPaV infection increased shoot elongation in two-year-old plants.
- Taxon
- V. viniferaVitis viniferae1
- Organ / stage
- two-year-old plantse3
- Treatment
- single GRSPaV infectionse3
- Outcome
- shoot elongatione3
- Direction
- increasede3
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"”
e3“in two-year-old plants, single GRSPaV infections increased shoot elongation”
Claim · model-written summary
Shoot elongation in two-year-old plants with single infection was accompanied by overexpression of genes of the gibberellic acid response pathway.
- Taxon
- V. viniferaVitis viniferae1
- Gene
- genes associated with the gibberellic acid response pathwaye4
- Compound
- gibberellic acide4
- Outcome
- overexpressione4
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"”
e4“was accompanied by the overexpression of genes associated with the gibberellic acid response pathway”
Claim · model-written summary
Gas exchange parameters of two-year-old plants with single infection were negatively affected.
- Taxon
- V. viniferaVitis viniferae1
- Organ / stage
- two-year-old plantse3
- Treatment
- single GRSPaV infectionse3
- Outcome
- gas exchange parameterse5
- Direction
- negatively affectede5
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"”
e3“in two-year-old plants, single GRSPaV infections increased shoot elongation”
e5“The gas exchange parameters of these plants were negatively affected, despite exhibiting higher LHCII gene expression”
Claim · model-written summary
Two-year-old plants with single infection showed higher LHCII gene expression.
- Taxon
- V. viniferaVitis viniferae1
- Organ / stage
- two-year-old plantse3
- Gene
- LHCIIe5
- Outcome
- LHCII gene expressione5
- Direction
- highere5
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"”
e3“in two-year-old plants, single GRSPaV infections increased shoot elongation”
e5“The gas exchange parameters of these plants were negatively affected, despite exhibiting higher LHCII gene expression”
Claim · model-written summary
Mixed GRSPaV and GFLV infections did not modify growth parameters.
- Taxon
- V. viniferaVitis viniferae1
- Treatment
- mixed infectionse6
- Interactor
- GRSPaVGrapevine rupestris stem pitting-associated viruse7pathogen
- Second interactor
- Grapevine fanleaf virusGrapevine fanleaf viruse7pathogen
- Outcome
- growth parameterse6
- Direction
- no_changeinferrede6
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"”
e6“Plants with mixed infections did not have modified growth parameters”
e7“or mixed infections of GRSPaV and Grapevine fanleaf virus (GFLV)”
Claim · model-written summary
Mixed infections caused a greater reduction in primary photosynthetic parameters.
- Taxon
- V. viniferaVitis viniferae1
- Treatment
- mixed infectionse7
- Interactor
- GRSPaVGrapevine rupestris stem pitting-associated viruse7pathogen
- Second interactor
- Grapevine fanleaf virusGrapevine fanleaf viruse7pathogen
- Outcome
- primary photosynthetic parameterse2
- Direction
- greater reductione2
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"”
e7“or mixed infections of GRSPaV and Grapevine fanleaf virus (GFLV)”
e2“although they presented a greater reduction in the primary photosynthetic parameters evaluated with no change in LHCII expression”
Claim · model-written summary
Mixed infections caused no change in LHCII expression.
- Taxon
- V. viniferaVitis viniferae1
- Treatment
- mixed infectionse7
- Interactor
- GRSPaVGrapevine rupestris stem pitting-associated viruse7pathogen
- Second interactor
- Grapevine fanleaf virusGrapevine fanleaf viruse7pathogen
- Outcome
- LHCII expressione2
- Direction
- no changee2
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"”
e7“or mixed infections of GRSPaV and Grapevine fanleaf virus (GFLV)”
e2“although they presented a greater reduction in the primary photosynthetic parameters evaluated with no change in LHCII expression”
Claim · model-written summary
The authors state that the results confirm the co-evolution hypothesis for V. vinifera and GRSPaV during early plant development.
- Taxon
- V. viniferaVitis viniferae0
- Interactor
- GRSPaVGrapevine rupestris stem pitting-associated viruse0pathogen
- Outcome
- co-evolution hypothesise0
- Qualifier
- during the early stages of plant developmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results presented here confirm the co-evolution hypothesis for V. vinifera and GRSPaV during the early stages of plant development”
The same questions in other papers
infection · physiology: gas exchange · 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.