Microorganisms (wood alter) - Microorganisms alter wood six basic ways: white rot (Cellulose and lignin digested.), brown rot (Cellulose digested, lignin altered. Some mycorrhizae grow between old, symplastless leaves, and in brown-rotted wood suggesting that the fungi may be able to digest lignin), discolored wood (Wood that is chemically altered as a result of a wound or injury. Discolored Wood - cell contents and walls altered, color change.), wetwood (see "wetwood"), soft rot (Cell walls eroded with distinct patterns.), and pit erosion (Cell walls eroded with distinct patterns, mostly in ponded logs (See "Pits")
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