Search results for " Xylella"
showing 3 items of 3 documents
In-Field and Early Detection of Xylella fastidiosa Infections in Olive Using a Portable Instrument
2019
Xylella fastidiosa subsp. pauca (Xfp) is a gram-negative pathogenic bacteria responsible for serious diseases (Purcell, 2013) that inflicts considerable economic loss (Li et al., 2007; Luvisi et al., 2017). The pathogen has been linked to olive quick decline syndrome (OQDS). This devastating olive disease was first observed in Salento (Apulia, southeastern Italy) in 2009. Infected trees respond to Xfp infection with scattered desiccation of twigs and small branches in the upper crown, which extend to the rest of the canopy, showing the characteristic blight effect. The disease causes tree death within a few years from the onset of symptoms (Martelli, 2016). The primary agronomic procedure f…
Apulian olive sapwood endophytes to cope with Xylella fastidiosa: community analysis, antagonists screening, colonization efficiency, and genes expre…
2021
This dissertation comprises a series of studies aimed at exploring the cultivable endophytic communities indigenous to the sapwood of Apulian olive cultivars, identifying potential antagonists against Xylella fastidiosa, pauca ST53, and demonstrating their colonization efficiency and associated effects on olive defence-related genes. This work starts with an extensive analysis of cultivable sapwood endophytes from resistant and susceptible cultivars distributed across phytosanitary zones in Apulia. After multiple isolation of endophyte colonies, the results were translated into quantitative indicators. It was found that the resistant cultivar 'Leccino' showed high stability and diversity of…
Xylella: il controllo viene dal cielo
2018
Il contagio del batterio che sta devastando le coltivazioni di olivi in Puglia può essere monitorato da una piattaforma aerea con sofisticati sensori che evidenziano gli alberi infetti prima che manifestino i sintomi della malattia CoDiRO.