Abstract
The effective management of grapevine trunk diseases (GTDs) is an ongoing challenge. Hot water treatment (HWT) is an environmentally friendly and economically viable option; however, the short-term effects of HWT on grapevine (Vitis vinifera L.) health and production are not fully understood. The aim of this study was to compare the effects of HWT on plant growth and fungal community structure in nursery stock until plants were completely established in the field. We assessed eleven graft and three rootstock varieties from four local nurseries in a region of Catalonia (NE Spain) where GTDs are a serious threat. After treatment, the plants were left to grow under field conditions for two growing seasons. Metabarcoding of the ITS region was used to study the mycobiomes of plant graft unions and root collars. We also assessed the influence of plant physiological indicators in community composition. Hot water treatment caused lasting changes in GTD communities in both the root collar and graft union that were not always characterized as a reduction of GTD-related fungi. However, HWT reduced the relative abundance of some serious GTD-associated pathogens such as Cadophora luteo-olivacea in graft tissues, and Phaeomoniella chlamydospora and Neofusicoccum parvum in the root collar. Treatment had the greatest influence on the total and GTD-related fungal communities of Chardonnay and Xarel·lo, respectively. Total community variation was driven by treatment and nursery in rootstocks, whereas HWT most significantly affected the GTD community composition in R-110 rootstock. In conclusion, changes in fungal abundance were species-specific and mostly dependent on the plant tissue type; however, HWT did reduce plant biomass accumulation in the short-term.
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Claims 10
Claim · model-written summary
Hot water treatment caused lasting GTD community changes in root collars and graft unions.
- Organ / stage
- root collar and graft unione0
- Treatment
- Hot water treatmente0
- Outcome
- GTD communitiese0
- Direction
- changese0
- Qualifier
- not always characterized as a reduction of GTD-related fungie0
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hot water treatment caused lasting changes in GTD communities in both the root collar and graft union that were not always characterized as a reduction of GTD-related fungi”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Hot water treatment reduced Cadophora luteo-olivacea relative abundance in graft tissues.
- Organ / stage
- graft tissuese0
- Treatment
- HWTe0
- Interactor
- Cadophora luteo-olivacea
_Figure_9.jpg?width=60)
Cadophora luteo-olivaceae0pathogen - Outcome
- relative abundancee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Figure_9.jpg?width=500)
Verbatim
e0“HWT reduced the relative abundance of some serious GTD-associated pathogens such as Cadophora luteo-olivacea in graft tissues”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Hot water treatment reduced Phaeomoniella chlamydospora relative abundance in root collars.
- Organ / stage
- root collare0
- Treatment
- HWTe0
- Interactor
- Phaeomoniella chlamydosporaPhaeomoniella chlamydosporae0pathogen
- Outcome
- relative abundancee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HWT reduced the relative abundance of some serious GTD-associated pathogens such as Cadophora luteo-olivacea in graft tissues, and Phaeomoniella chlamydospora and Neofusicoccum parvum in the root collar”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Hot water treatment reduced Neofusicoccum parvum relative abundance in root collars.
- Organ / stage
- root collare0
- Treatment
- HWTe0
- Interactor
- Neofusicoccum parvumNeofusicoccum parvume0pathogen
- Outcome
- relative abundancee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HWT reduced the relative abundance of some serious GTD-associated pathogens such as Cadophora luteo-olivacea in graft tissues, and Phaeomoniella chlamydospora and Neofusicoccum parvum in the root collar”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Treatment most strongly influenced total fungal communities in Chardonnay.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment had the greatest influence on the total and GTD-related fungal communities of Chardonnay and Xarel·lo, respectively”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Treatment most strongly influenced GTD-related fungal communities in Xarel·lo.
- Material
- Xarel·loe0
- Treatment
- Treatmente0
- Outcome
- GTD-related fungal communitiese0
- Direction
- greatest influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment had the greatest influence on the total and GTD-related fungal communities of Chardonnay and Xarel·lo, respectively”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Treatment and nursery drove total fungal community variation in rootstocks.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total community variation was driven by treatment and nursery in rootstocks”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Hot water treatment most significantly affected GTD community composition in R-110 rootstock.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HWT most significantly affected the GTD community composition in R-110 rootstock”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Fungal abundance changes depended mostly on plant tissue type and differed by fungal species.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“changes in fungal abundance were species-specific and mostly dependent on the plant tissue type”
t0“Grapevine (Vitis vinifera L.)”
Claim · model-written summary
Hot water treatment reduced short-term grapevine biomass accumulation.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HWT did reduce plant biomass accumulation in the short-term”
t0“Grapevine (Vitis vinifera L.)”
The same questions in other papers
heat · Neofusicoccum parvum · VitisPositive and negative results
1 in the opposite direction
- no effect
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
heat · growth · VitisPositive and negative results
9 papers in the same direction as this paper · 8 in the opposite direction
- negative
- positive
- positive
14 papers more in this group
See all 18 papers →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.