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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
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Title: Role of tyloses in the natural durability of a white oak species

Source: Res. In Prog. RIP-4851-022. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 2 p.

Author(s)Taylor, Adam ; Lebow, Patricia ; Lebow, Stan

Publication Year: 2019  View PDF »

Related Publications: view

Category: Research In Progress

Abstract: White oak is a major component of hardwood forests in the eastern United States, being second only to red oak in volume of hardwood sawtimber (Cassens 2011). The heartwood of white oak species, including chestnut oak, is generally naturally durable (Scheffer and Morrell 1998), and this property is an important component of its suitability for some applications (such as railway crossties). One possible reason for white oak’s durability is the presence of tyloses. Tyloses are blockages of the lumens of wood cells that result from the extrusion of the cell contents of adjacent parenchyma cells (Fig. 1). The purpose of tyloses in the living tree is not known but it has been suggested that they serve to impede the penetration of fungal hyphae and other organisms. However, natural durability of white oaks can be highly variable.

Keywords: Tyloses; white oak; durability; anatomical variability

Publication Review Process: Non-Refereed (Other)

File size: 645 kb(s)

Date posted: 12/16/2019
RITS Product ID: 96739
Current FPL Scientists associated with this product (listed alphabetically)
Lebow, Patricia K.
Mathematical Statistician
Lebow, Stan T.
Research Forest Products Technologist

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