High Growing Season Temperatures Limit Winter Recovery of Grapevines from Xylella fastidiosa Infection - Implications for Epidemiology in Hot Climates

Management of widespread plant pathogens is challenging as climatic differences among crop-growing regions may alter key aspects of pathogen spread and disease severity. Xylella fastidiosa is a xylem-limited bacterial pathogen that is transmitted by xylem sap-feeding insects. Geographic distribution...

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Veröffentlicht in:Plant disease. - 1997. - 107(2023), 12 vom: 10. Dez., Seite 3858-3867
1. Verfasser: Burbank, Lindsey (VerfasserIn)
Weitere Verfasser: Sisterson, Mark S, Wei, Wei, Ortega, Brandon, Luna, Nathaniel, Naegele, Rachel
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article Pierce’s disease Xylella fastidiosa climate epidemiology overwinter curing
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520 |a Management of widespread plant pathogens is challenging as climatic differences among crop-growing regions may alter key aspects of pathogen spread and disease severity. Xylella fastidiosa is a xylem-limited bacterial pathogen that is transmitted by xylem sap-feeding insects. Geographic distribution of X. fastidiosa is limited by winter climate, and vines infected with X. fastidiosa can recover from infection when held at cold temperatures. California has a long history of research on Pierce's disease and significant geographic and climatic diversity among grape-growing regions. This background in combination with experimental disease studies under controlled temperature conditions can inform risk assessment for X. fastidiosa spread and epidemic severity across different regions and under changing climate conditions. California's grape-growing regions have considerable differences in summer and winter climate. In northern and coastal regions, summers are mild and winters are cool, conditions which favor winter recovery of infected vines. In contrast, in inland and southern areas, summers are hot and winters mild, reducing likelihood of winter recovery. Here, winter recovery of three table grape cultivars (Flame, Scarlet Royal, and Thompson Seedless) and three wine grape cultivars (Sauvignon Blanc, Cabernet Sauvignon, and Zinfandel) were evaluated under temperature conditions representative of the San Joaquin Valley, an area with hot summers and mild winters that has been severely impacted by Pierce's disease and contains a large portion of California grape production. Mechanically inoculated vines were held in the greenhouse under one of three warming treatments to represent different seasonal inoculation dates prior to being moved into a cold chamber. Winter recovery under all treatments was generally limited but with some cultivar variation. Given hot summer temperatures of many grape-growing regions worldwide, as well as increasing global temperatures overall, winter recovery of grapevines should not be considered a key factor limiting X. fastidiosa spread and epidemic severity in the majority of cases 
650 4 |a Journal Article 
650 4 |a Pierce’s disease 
650 4 |a Xylella fastidiosa 
650 4 |a climate 
650 4 |a epidemiology 
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700 1 |a Sisterson, Mark S  |e verfasserin  |4 aut 
700 1 |a Wei, Wei  |e verfasserin  |4 aut 
700 1 |a Ortega, Brandon  |e verfasserin  |4 aut 
700 1 |a Luna, Nathaniel  |e verfasserin  |4 aut 
700 1 |a Naegele, Rachel  |e verfasserin  |4 aut 
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