Tree Physiology 2014-11-01

PtrKOR1 is required for secondary cell wall cellulose biosynthesis in Populus.

Liangliang Yu, Hongpeng Chen, Jiayan Sun, Laigeng Li

Index: Tree Physiol. 34(11) , 1289-300, (2014)

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Abstract

KORRIGAN (KOR), encoding an endo-1,4-β-glucanase, plays a critical role in the cellulose synthesis of plant cell wall formation. KOR sequence orthologs are duplicated in the Populus genome relative to Arabidopsis. This study reports an expression analysis of the KOR genes in Populus. The five PtrKOR genes displayed different expression patterns, suggesting that they play roles in different developmental processes. Through RNAi suppression, results demonstrated that PtrKOR1 is required for secondary cell wall cellulose formation in Populus. Together, the results suggest that the PtrKOR genes may play distinct roles in association with cell wall formation in different tissues. © The Author 2014. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.