%0 Journal Article %T Towards a Systems Approach for Lignin Biosynthesis in Populus trichocarpa: Transcript Abundance and Specificity of the Monolignol Biosynthetic Genes %A Shi, Rui %A Sun, Ying-Hsuan %A Li, Quanzi %A Heber, Steffen %A Sederoff, Ronald %A Chiang, Vincent L. %J Plant and Cell Physiology %V 51 %N 1 %P 144-163 %@ 0032-0781 %D 2009-12-08 %I Oxford University Press %~ DeepDyve