Abstract
Six different Vitis cultivars grown in recirculating nutrient solutions supplied with 0, 10 and 112 mg.l-1 SiO2, respectively, were infected with spores of the powdery mildew fungus Uncinula necator and analyzed after 2, 4 and 6 weeks. Whereas the size of the silica endoskeletons induced by the powdery mildew was influenced by the SiO2 concentration, the cultivar-specific resistance could not be increased. However, after 2 weeks all varieties showed a slightly but significantly enhanced resistance in the 112 mg.l-1 solution which disappeared during the following weeks. The results show silica to be essential for a normal powdery mildew resistance but make evident that the Oidium susceptibility of cultivars cannot be overcome by supplementary silica fertilization in the field, the Si contents of most soil solutions being far above the minimal requirements of the grapevine.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Silica supply concentration influenced the size of the silica endoskeletons induced by powdery mildew in Vitis cultivars.
- Taxon
- Vitis cultivarse1
- Treatment
- SiO2 concentratione2
- Interactor
- Uncinula necator
Erysiphe necatore1pathogen - Outcome
- size of the silica endoskeletonse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Six different Vitis cultivars grown in recirculating nutrient solutions supplied with 0, 10 and 112 mg.l-1 SiO2, respectively, were infected with spores of the powdery mildew fungus Uncinula necator”
e2“the size of the silica endoskeletons induced by the powdery mildew was influenced by the SiO2 concentration”
Claim · model-written summary
Silica supply did not increase the cultivar-specific resistance of Vitis cultivars to powdery mildew.
- Taxon
- Vitis cultivarse1
- Treatment
- nutrient solutions supplied with 0, 10 and 112 mg.l-1 SiO2e1
- Interactor
- Uncinula necatorErysiphe necatore1pathogen
- Outcome
- cultivar-specific resistancee3
- Direction
- could not be increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Six different Vitis cultivars grown in recirculating nutrient solutions supplied with 0, 10 and 112 mg.l-1 SiO2, respectively, were infected with spores of the powdery mildew fungus Uncinula necator”
e3“the cultivar-specific resistance could not be increased”
Claim · model-written summary
After 2 weeks, all varieties showed slightly but significantly enhanced resistance in the 112 mg.l-1 solution.
- Taxon
- Vitis cultivarse1
- Treatment
- 112 mg.l-1 solutione4
- Interactor
- Uncinula necatorErysiphe necatore1pathogen
- Outcome
- resistancee4
- Direction
- enhancede4
- Qualifier
- slightly but significantlye4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Six different Vitis cultivars grown in recirculating nutrient solutions supplied with 0, 10 and 112 mg.l-1 SiO2, respectively, were infected with spores of the powdery mildew fungus Uncinula necator”
e4“after 2 weeks all varieties showed a slightly but significantly enhanced resistance in the 112 mg.l-1 solution which disappeared during the following weeks”
Claim · model-written summary
The enhanced resistance in the 112 mg.l-1 solution disappeared during the following weeks.
- Taxon
- Vitis cultivarse1
- Treatment
- 112 mg.l-1 solutione4
- Interactor
- Uncinula necatorErysiphe necatore1pathogen
- Outcome
- resistancee4
- Direction
- disappearede4
- Qualifier
- during the following weekse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Six different Vitis cultivars grown in recirculating nutrient solutions supplied with 0, 10 and 112 mg.l-1 SiO2, respectively, were infected with spores of the powdery mildew fungus Uncinula necator”
e4“after 2 weeks all varieties showed a slightly but significantly enhanced resistance in the 112 mg.l-1 solution which disappeared during the following weeks”
Claim · model-written summary
Silica is essential for a normal powdery mildew resistance of grapevines.
Not reportedDirection
Verbatim
e1“Six different Vitis cultivars grown in recirculating nutrient solutions supplied with 0, 10 and 112 mg.l-1 SiO2, respectively, were infected with spores of the powdery mildew fungus Uncinula necator”
e5“The results show silica to be essential for a normal powdery mildew resistance”
Claim · model-written summary
Supplementary silica fertilization in the field cannot overcome the Oidium susceptibility of grapevine cultivars.
- Taxon
- Vitis cultivarse1
- Treatment
- supplementary silica fertilization in the fielde6
- Outcome
- Oidium susceptibility of cultivarse6
- Direction
- cannot be overcomee6
- Setting
- in the fielde6
OidiumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Six different Vitis cultivars grown in recirculating nutrient solutions supplied with 0, 10 and 112 mg.l-1 SiO2, respectively, were infected with spores of the powdery mildew fungus Uncinula necator”
e6“the Oidium susceptibility of cultivars cannot be overcome by supplementary silica fertilization in the field”
The same questions in other papers
fertilization · Erysiphe necator · VitisPositive and negative results
1 in the opposite direction
- 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.