Phellinus noxius Brown Root Rot of Fruit and Ornamental Trees in Taiwan

Brown root rot caused by phellinus noxius in the Ogasawara (Bonin) islands, southern Japan - current status of the disease and its host plants

“…2e, g), and white root rot with conspicuous brown lines (Fig. 2f, g), (Ann et al 2002;Ivory 1996;Nandris et al 1987;Sahashi et al 2012). Unlike the Ryukyu Islands, however, encrustations extended more than 1 m above the ground as reported in many tropical areas (Brooks 2002;Ivory 1996;Hodges and Tenorio 1984).…”

“…root rot disease in a variety of woody tree species (Ann et al 1999(Ann et al , 2002Bolland 1984;Brooks 2002;CABI/EPPO 1997;Chang 1995;Chang and Yang 1998;Hodges and Tenorio 1984;Ivory 1996;Larsen and Cobb-Poule 1990;Nandris et al 1987;Neil 1986). Affected trees show reduced growth, leaf discoloration, wilting, defoliation, and branch dieback, and most eventually die (Sahashi et al 2012(Sahashi et al , 2014.…”

“…Affected trees show reduced growth, leaf discoloration, wilting, defoliation, and branch dieback, and most eventually die (Sahashi et al 2012(Sahashi et al , 2014. The fungus has a broad host range (Ann et al 2002;Bolland1 984;Ivory 1996) with little host specificity (Ann et al 1999;Chang 1995;Sahashi et al 2010).…”

“…In addition, we examined some tree species grown in a glass greenhouse at Ogasawara Subtropical Agricultural Center of the Tokyo Metropolitan Government. When we found affected trees, we examined the roots and stem bases carefully for characteristic symptoms of the disease described in many studies (Ann et al 2002;Hodges and Tenorio 1984;Ivory 1996;Sahashi et al 2012). Tissue samples from roots and stem bases with typical symptoms were returned to the laboratory for fungal isolation.…”

“…f Well developed white rot with conspicuous brown lines permeating the rotted wood. g A fallen tree with a black mycelial crust on the stem and roots, and a typical white rot containing brown lines (Ann et al 2002;Bolland 1984;Hodges and Tenorio 1984;Nandris et al 1987;Sahashi et al 2012;Singh et al 1980). Phellinus noxius was also found on dead and fallen trees in natural forests with little human disturbance, but spreading of the pathogen was limited to a few neighboring healthy trees, and therefore did not create large disease foci.…”