Claim · model-written summary
All 24 P. viticola isolates collected in 2022 belonged to P. viticola clade aestivalis.
- Taxon
- P. viticola
Plasmopara viticolae0 - Outcome
- belonged to P. viticola clade aestivalise0
- Value
- 24e0
Not reportedDirection
Verbatim
e0“Molecular analysis of 24 P. viticola isolates collected in 2022 confirmed that all belonged to P. viticola clade aestivalis”
Title
Nancy Sharma; Lexi Heger; Roger Sysak; et al. Plant Health Progress 2026. doi:10.1094/php-10-25-0241-sc
Other claims from this paper (9)
- Observation In the untreated control of the Niagara juice grape trial, downy mildew incidence reached 34% in 2021.
- Observation In the untreated control of the Niagara juice grape trial, downy mildew severity reached 26% in 2021.
- Observation In the untreated control of the Niagara juice grape trial, downy mildew incidence reached 90% in 2022.
- Observation In the untreated control of the Niagara juice grape trial, downy mildew severity reached 57% in 2022.
- Intervention effect Across both years, mandipropamid provided consistent control of grape downy mildew, reducing incidence and severity AUDPC values by more than 70% compared with the untreated control.
- Intervention effect Across both years, cyazofamid provided consistent control of grape downy mildew, reducing incidence and severity AUDPC values by more than 70% compared with the untreated control.
- Intervention effect Across both years, fenamidone provided consistent control of grape downy mildew, reducing incidence and severity AUDPC values by more than 70% compared with the untreated control.
- Observation The G1105S mutation associated with resistance to carboxylic acid amides was not detected in the P. viticola isolates.
- Observation The G143A mutation conferring resistance to quinone outside inhibitor fungicides was present in 12 P. viticola isolates.
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Phytophthora palmivora