Elucidating wood decomposition by four species of Ganoderma from the United States

Wood decay caused by Ganoderma species in the United States. A) scanning electron micrograph (SEM) of non-decayed Quercus nigra wood (control), where “Xv” represent xylem vessels and “P” represent parenchyma cells (bar = 200 μm); B) Scanning electron micrograph of Q. nigra wood degraded by Ganoderma sessile (treatment), where arrows represent simultaneously decayed cells (bar = 100 μm); C) Percent mass loss of different wood types after 90 d of incubation across four Ganoderma species from the U.S. and a control; and D) Average colony area of growth when Ganoderma species were grown on media amended with water-soluble sapwood extracts from four types of wood and 2 % malt extract agar (MEA) as a control.296