2013
DOI: 10.1111/jph.12201
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Infection of Vitis vinifera (cv Chardonnay) Inflorescences by Colletotrichum acutatum and Greeneria uvicola

Abstract: Detached Vitis vinifera (cv Chardonnay) inflorescences were inoculated with spore suspensions of either Colletotrichum acutatum or Greeneria uvicola at 25°C, and a combination of light microscopy, scanning electron microscopy and plating out of inoculated flowers on to dichloran rose bengal chloramphenicol agar was used to investigate the time frame for infection. Colletotrichum acutatum infection commenced within 2 h of inoculation, while infection by G. uvicola commenced between 12 and 18 h postinoculation. … Show more

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Cited by 6 publications
(3 citation statements)
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“…Grapes are susceptible to infection by Colletotrichum spp. from the flowering to the maturation phase (Greer et al, 2014); however, the disease is only evident when the berries reach maturity, owing to the appearance of small circular brown spots on the berries, which become brown-reddish as the humidity increases with exposure of abundant conidial mass (Weir et al, 2012). Subsequently, with the fungal development to the necrotrophic phase, the fruits mummify and fall (Nogueira et al, 2017).…”
Section: Cultivatingmentioning
confidence: 99%
“…Grapes are susceptible to infection by Colletotrichum spp. from the flowering to the maturation phase (Greer et al, 2014); however, the disease is only evident when the berries reach maturity, owing to the appearance of small circular brown spots on the berries, which become brown-reddish as the humidity increases with exposure of abundant conidial mass (Weir et al, 2012). Subsequently, with the fungal development to the necrotrophic phase, the fruits mummify and fall (Nogueira et al, 2017).…”
Section: Cultivatingmentioning
confidence: 99%
“…The estimates and standard errors of the equation parameters were 0.065 ± 0.002 and 3.321 ± 0.498. Equation ( 5) was developed by using the data of Greer et al [32] and Yun and Park [28], with R 2 = 0.945 (see Figure S4 in the Supplementary Materials). The model considers that fruit is equally susceptible at any time during the season [4], so that there are no modifiers for the infection severity based on the growth stage of clusters; infections, however, may be quiescent or active based on the growth stage [18,33].…”
Section: Primary Infection Eventsmentioning
confidence: 99%
“…In the next season, acervuli produce abundant conidia splash-dispersed to healthy tissues and serve as inoculum for repeated primary infection cycles. Conidia germinate, produce appressoria, and penetrate the cuticle of berries, which are susceptible from flowering to ripening [4,17,32]. Infected berries, however, do not show symptoms until ripening, i.e., the infection remains quiescent until véraison or later [18,33].…”
Section: Systems Analysis and Model Developmentmentioning
confidence: 99%