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Photo of Perenniporia fraxinea SS3
TEM image of Perenniporia fraxinea SS3 mycelium after 4 weeks incubation with a living tree. [Image credit: Yoko Watanabe and Chiaki Hori]

The genome sequence of Perenniporia fraxinea SS3 was not determined by the Joint Genome Institute (JGI) but was provided by Dr. Chiaki Hori on July 2, 2021. To allow comparative analyses with other fungal genomes sequenced by the JGI, a copy of this genome is incorporated into Mycocosm. The JGI Annotation Pipeline was used to generate structural and functional annotations.

Many Polyporales including Phanerochaete chrysosporium, Ceriporiopsis subvermispora, Trametes versicolor, and Phlebiopsis gigantea, possess an impressive ability of degrading wood. These fungi secrete a series of carbohydrate-active enzymes (CAZymes) to degrade plant cell wall components of dead trees such as stumps, fallen trees and woody debris. Perenniporia fraxinea belonging to Polyporales is capable of colonizing living trees and causes mortality and serious mechanical damages of hardwood. In urban environments, the disease has led to hazardous situations including downed trees or limbs of planted trees such as black locusts, oaks, ashs and flowering cherrys throughout North America, Europe and Asia in northern hemisphere.