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Resource: used or used up in processes

Lignin

Appears in 4 processs and 14 steps. Everything below is linked: open a process to see it in context.

Top processes

White-rot and brown-rot fungi: two routes to lignin and cellulose decay

7 steps

White-rot basidiomycetes secrete class II peroxidases (lignin, manganese, versatile) and laccases that oxidize lignin and leave a pale, cellulose-rich residue
Manganese peroxidase oxidizes Mn(II) to Mn(III) chelated by oxalate, a diffusible oxidant that attacks lignin beyond the enzyme's reach
Brown-rot fungi lack class II peroxidases and use Fenton chemistry (Fe2+ + H2O2 gives hydroxyl radicals) to depolymerize cellulose, leaving modified lignin
and 4 more in this process

Saprotrophic fungi

3 steps

Organic matter decomposition

3 steps

Enzymatic depolymerization of plant polymers

1 step

Oxidases and peroxidases partially degrade lignin and phenolics

Often found with

White-rot fungi 7 Cellulose 4 Nitrogen 3 Saprotrophic fungi 3 Hydrogen peroxide 3 Oxygen 2 Decomposers 2 Litter 2 Carbon 2 Litter 2 Brown-rot fungi 2 Ligninolytic enzymes 1

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