Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

Mutant Loblolly Pine trees that possess a mutation for the Cinnamyl Alcohol Dehydrogenase (CAD) gene have been shown to have abnormal lignin. They are shown to incorporate novel monomers into the lignin polymer, suggesting alternative pathways in lignin biosynthesis. They have shown to be more easily delignified, but their pulp yields are low and the trees possess a high rate of mortality. Four- and six-year-old partially CAD-deficient trees are approx. 25% more easily delignified than their control counterparts. Four-year-old partially CAD-deficient bleached pulp also shows better strength properties. By contrast, fourteen-year-old trees do not seem to possess the same beneficial delignification rates and bleachability. Surprisingly, these same fourteen-year-old partially CAD-deficient trees grow faster than their wild type controls. This result suggests the possibility of producing more wood per acre using plantations of these naturally occurring mutants. Additional trees from other sources will be examined to verify the observed results. The lignin structures in CAD-deficient trees are being compared to understand the delignification trends; lignin analyses will be discussed.

Type

Conference paper

Publication Date

01/12/2002

Pages

73 - 82