Phytophthora austrocedri

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Phytophthora austrocedri - symptoms on Austrocedrus chilensis in Argentina (a–e) and on Juniperus communis in the UK (f, g) (click on image to enlarge it)
Author(s): T. Jung (a–d) and A. Pérez-Sierra (e-g)
Source: Persoonia 2018, vol. 40, p. 194

Phytophthora austrocedri Gresl. & E.M. Hansen 2007 - (mal del ciprés)

This oomycete has been described from Argentina as causing decline and mortality on cordilleran cypress, Austrocedrus chilensis. The disease has been first noted in 1948 in one location and subsequently spread to other parts of Argentina. The symptoms include chlorosis, later changing to red and defoliation. Tree may die rapidly.

P. austrocedri has also reported from other regions like Europe and western Asia and from other hosts. These include common juniper (Juniperus communis) where it can cause dieback and mortality. Other conifers like Xanthocyparis nootkatensis and Cupressus sempervirens can also become infected.