Phytophthora alticola and Phytophthora cinnamomi on Eucalyptus globulus in Portugal

Phytophthora alticola and P. boodjera associated with decline of young Eucalyptus smithii trees in Uruguay

“…To the date, P. alticola has been found in South Africa (Bose et al, 2017) and recently in Portugal causing root rot and dieback in E. globulus (Diogo et al, 2022). In this way, Bose et al (2017) suggested this species could be native to South Africa, while Diogo et al (2022) considered it as an introduction of a new species in Portugal.…”

“…To the date, P. alticola has been found in South Africa (Bose et al, 2017) and recently in Portugal causing root rot and dieback in E. globulus (Diogo et al, 2022). In this way, Bose et al (2017) suggested this species could be native to South Africa, while Diogo et al (2022) considered it as an introduction of a new species in Portugal. Regarding to P. boodjera , this species was thought to have a limited distribution to nurseries and urban gardens (Simamora et al, 2018), but it has also been isolated from the remote region of Forrestania in the Great Western Woodlands of WA and from New South Wales, suggesting that P. boodjera could be native to Australia (Burgess et al, 2021).…”

First report of Phytophthora hibernalis, P. multivora and P. niederhauserii causing root rot and bleeding cankers on Eucalyptus globulus in Portugal

“…This study represents the first report of P. hibernalis, P. multivora and P. niederhauserii on E. globulus in Portugal and in Europe. Recently, two other species, Phytophthora cinnamomi and P. alticola , have been reported as root rot agents of E. globulus in several areas of Portugal (Diogo et al., 2023). The involvement of multiple Phytophthora on E. globulus plantations is of particular concern due to the invasiveness of the species detected and the potential spread of these pathogens into natural ecosystems adjacent to eucalypt plantations.…”

Oomycete communities are influenced by land use and disease status in Christmas tree production in Southern Québec, Canada

“…In Western Australia, for example, it was estimated that more than 40% of the described plant species were susceptible to P. cinnamomi (Shearer et al, 2004). Severe impacts were also observed on chestnut stands in the United States and Europe and native oak species in Europe (Brasier et al, 1993;Cardillo et al, 2021;Diogo et al, 2022;Prigigallo et al, 2015). Another important example in forestry is the invasive species P. ramorum, which is responsible for sudden oak death in North America (LeBoldus et al, 2022;Rizzo et al, 2002) and sudden larch death in the UK (Brasier & Webber, 2010).…”