Abstract
Petri disease is a Grapevine Trunk Disease (GTD) primarily associated with the ascomycete species Phaeomoniella chlamydospora, which leads to substantial losses in young vineyards, particularly during the first years after planting. Contamination of plant material before and during nursery procedures with this species represents a potential risk for future vineyards. Nurseries need tailor-made and effective methods for guaranteeing the supply of GTD-free material. This study evaluated Hot Water Treatment (HWT), a widely used method to reduce or eliminate GTD-associated fungi in grapevine propagation materials, in one of the most common scion-rootstock combinations in Portuguese grapevines. The assessment focused on the elimination of P. chlamydospora and plant viability in plants of cv. Touriga Nacional grafted onto 1103 P rootstock. Treatments included non-HWT and HWT plant parts at 46 °C, 50 °C and 54 °C for 45 min, applied to both non-inoculated and P. chlamydospora-inoculated scions and rootstocks. Fungal presence was assessed before and after HWT, and growth parameters of grafted plants were measured after stratification and three months in a nursery. HWT effectively eliminated P. chlamydospora; however, inoculated plants exhibited reduced quality traits compared to non-inoculated plants. The 46 °C treatment produced the highest-quality plants, enhancing the callogenesis process of the grafting union. Mathematical modelling of the pathosystem comprising the pathogen P. chlamydospora and hosts Vitis vinifera as scion and V. rupestris × V. berlandieri as rootstock suggests a better resilience of the symbiont plants to higher temperatures when compared to P. chlamydospora. Optimised HWT protocols are recommended to reduce GTD pathogens while maintaining plant viability.
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Claims 6
Claim · model-written summary
Hot water treatment effectively eliminated P. chlamydospora from grapevine plants.
- Treatment
- HWTe1
- Interactor
- P. chlamydosporaPhaeomoniella chlamydosporae1pathogen
- Outcome
- elimination of P. chlamydosporae2
- Direction
- effectively eliminatede1
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Enhancing grapevine viability”
e1“HWT effectively eliminated P. chlamydospora; however, inoculated plants exhibited reduced quality traits compared to non-inoculated plants”
e2“The assessment focused on the elimination of P. chlamydospora and plant viability in plants of cv. Touriga Nacional grafted onto 1103 P rootstock”
Claim · model-written summary
Plants inoculated with P. chlamydospora had reduced quality traits compared with non-inoculated plants.
- Treatment
- P. chlamydospora-inoculatede3
- Interactor
- P. chlamydosporaPhaeomoniella chlamydosporae1pathogen
- Outcome
- quality traitse1
- Direction
- reducede1
- Comparator
- non-inoculated plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Enhancing grapevine viability”
e1“HWT effectively eliminated P. chlamydospora; however, inoculated plants exhibited reduced quality traits compared to non-inoculated plants”
e3“Treatments included non-HWT and HWT plant parts at 46 °C, 50 °C and 54 °C for 45 min, applied to both non-inoculated and P. chlamydospora-inoculated scions and rootstocks”
Claim · model-written summary
The 46 °C hot water treatment produced the highest-quality grapevine plants compared with 50 °C and 54 °C.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Enhancing grapevine viability”
e4“The 46 °C treatment produced the highest-quality plants, enhancing the callogenesis process of the grafting union”
e3“Treatments included non-HWT and HWT plant parts at 46 °C, 50 °C and 54 °C for 45 min”
Claim · model-written summary
The 46 °C hot water treatment enhanced the callogenesis of the grafting union in grapevine.
- Organ / stage
- grafting unione4
- Treatment
- 46 °C treatmente4
- Outcome
- callogenesis process of the grafting unione4
- Direction
- enhancinge4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Enhancing grapevine viability”
e4“The 46 °C treatment produced the highest-quality plants, enhancing the callogenesis process of the grafting union”
Claim · model-written summary
Modelling suggests that Vitis vinifera plants are more resilient than P. chlamydospora to higher temperatures.
- Taxon
- Vitis vinifera
Vitis viniferae5 - Treatment
- higher temperaturese5
- Interactor
- P. chlamydosporaPhaeomoniella chlamydosporae5pathogen
- Outcome
- resiliencee5
- Direction
- bettere5
- Comparator
- P. chlamydosporae5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Mathematical modelling of the pathosystem comprising the pathogen P. chlamydospora and hosts Vitis vinifera as scion and V. rupestris × V. berlandieri as rootstock suggests a better resilience of the symbiont plants to higher temperatures when compared to P. chlamydospora”
Claim · model-written summary
Optimised hot water treatment protocols are recommended to reduce GTD pathogens while maintaining grapevine viability.
- Outcome
- reduce GTD pathogens while maintaining plant viabilitye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Enhancing grapevine viability”
e6“Optimised HWT protocols are recommended to reduce GTD pathogens while maintaining plant viability”
The same questions in other papers
heat · Phaeomoniella chlamydospora · VitisPositive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
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.