noxius (Corner) G.H. Cunningham AUG 12 susceptible hosts upon contact. in woodydebris buried in soil, and thus infect The can survivefor many years as hyphae jacaranda and figs in Brisbane and the Gold Coast. areas and in urban amenity trees such as the Bundaberg/Childers and Atherton Tablelands plantations in Queensland, avocadoorchards in brown root rot is a significant problem in hoop pine east Asia for pulpwoodproduction. In Australia mangium longan, litchi, pear, persimmon and in rubber, palm, oil tea, mahogany, teak, cocoa, Impact: hinterland in Queensland. occurred in 2002 from the SunshineCoast of collections confirmed (Bolland 1984). Confirmation Phellinusnoxius basidiomycete were tentatively identified as earlyas 1952 as the In Australia, fungal fruiting bodies from hooppine serious losses to production through tree deaths. native rainforest, the fungus may infect and cause monoculture plantations or orchards have replaced decay and recycling agent, however, where environments, The Pathogen: Authors: Key Contact: noxius plantations. Australian47:2 Forestry Reading: Further foci. spreads primarilyby root to root contact withairborne basidiosporesa potential source for newinfection cunninghamii Brown root rot caused by Classification Disease Photos by; Tony Cooke, Liz Dann and Geoff Pegg Fig 3. Fig. 1. P. noxius

, the cause of brownroot rotin Australian avocados, Avocados,Talking 20 28 (2): Light, Light, dry, friable and honeycombed decayedwood; Successive death of avocado trees along the row; Overseas, it has caused significant loses

:

Elizabeth Dann, Geoff Pegg and Louise Shuey

whichhas beenwidely planted in south

causing tree death in avocado Dr ) ) and avocado( P. noxius : Fomes noxius

ElizabethDann; e In In undisturbed rainforest ), ), and the identityof later Bolland,L. (1984) Phellinus noxius: cause of a significant root Brown root rot K: Eumycota, D: , C: Agaricomytes, O: , F: Pathogenof the month

isan important wood Phellinusnoxius

Persea america (later (later reclassified as

- - mail: [email protected];mail: Phone: 3255(07) 4352 10; E. Dann, L. Smith, Pegg,K. Grose, G. M. Pegg (2009) Report on Acacia

isa significant fungal disease of hoop pine( ) ) in northern SouthNew Wales and Queensland. The fungus

for for avocado. fumigation options are currently being investigated quarantine the affected area. Fungicideinfusion and neighbours and installationof root barriers to limited to removal of the dead tree and immediate transcribed spacer (ITS) region. Management is currently avocado. Confirmatory diagnosis is Queensland (Fig 4) but have not been seen on bodies are common in hoop pine in north commonly cinnamon browncolour. in Fruiting light, friable and honeycombed (Fig 3). Myceliais margin (Fig 2). In advanceddecay wood becomes above ground (the infection “stocking”) withwhite infected roots, alsosometimes onvisible the trunk (Fig 1), presence of brown mycelial crust covering of trees, successive death of trees along the row diagnostic and may include rapid and wiltingdeath Detection and control: South Wales. been recorded in Queensland and northern New and the Carribean, and Japan. In Australia it has of southeast Asia, Africa, Oceania, Central America widespread among tropical and subtropical regions species from over fifty plant families. It is host range, infecting more than 200 (mostly woody) Host range anddistribution: Fig. Fig. 2 Fig 4.

. . Infection “stocking” advancing up the trunk; through through sequence analysisof the internal

Bracket

– - -

rot Queenslandrot in hoop pine type basidiocarp on hooppine August 2012

Keysymptoms are - 34

P. noxius Araucaria

has a wide Phellinus