Jon Menke's research while affiliated with Saint Catherine University and other places

Publications (3)

Article
Despite the central role of saprotrophic fungi in wood decomposition and terrestrial carbon cycling, the diversity and functioning of wood endophytes (i.e., fungi that asymptomatically colonize living plant tissue) on decay remains poorly understood. 2.In a four-year field experiment in a boreal forest in the upper midwestern United States, we inve...
Article
Full-text available
Wood-degrading brown rot fungi are essential recyclers of plant biomass in forest ecosystems. Their efficient cellulolytic systems, which have potential biotechnological applications, apparently depend on a combination of two mechanisms: lignocellulose oxidation (LOX) by reactive oxygen species (ROS) and polysaccharide hydrolysis by a limited set o...
Article
Full-text available
Fungi typically live in highly diverse communities composed of multiple ecological guilds. Although high-throughput sequencing has greatly increased the ability to quantify the diversity of fungi in environmental samples, researchers currently lack a simple and consistent way to sort large sequence pools into ecologically meaningful categories. We...

Citations

... Brown rot fungi selectively metabolize cellulose and hemicellulose via extensive depolymerization, leaving lignin partially intact [4][5][6] and, at least theoretically, "steering" more carbon to soils in lignin residues than to the atmosphere as CO 2 . Given that most of Earth's aboveground biomass carbon is in wood [7] and that the fate of carbon in wood is flexible depending on ecological factors [8,9], understanding relationships between rot type and other microorganisms, notable bacteria, is of logical benefit for predicting carbon release from wood. ...
... Brown rotted lignin has been shown to have increased carbonyl and aromatic content, in addition to increased hydroxyl and reduced methoxyl content (Jin et al., 1990;Yelle et al., 2008Yelle et al., , 2011. Lignin modification is thought to be caused by hydroxyl radicals, which are produced by brown rot fungi in the initial stages of decay (Arantes et al., 2012;Zhang et al., 2016;Zhang and Schilling, 2017). Hydroxyl radical attack causes the depolymerization and rapid repolymerization of lignin (Yelle et al., 2008(Yelle et al., , 2011, resulting in structural arrangements that allow the digestion of the carbohydrate fraction of the cell walls. ...
... Soil OTUs were first filtered as 'possible' EM fungi using the FUN-Guild database (Nguyen et al., 2016). Those soil samples that had less than five EM fungal reads were considered to have no EM fungi in our statistical analyses. ...