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- Title
Regulation of secondary xylem formation in young hybrid poplars by modifying the expression levels of the PtaGLIMa gene.
- Authors
Yang, Shaohui; Zhu, Guiyuan; Wang, Caili; Chen, Lincai; Song, Yingjin; Wang, Jiehua
- Abstract
Due to the importance of wood in many industrial applications, a tremendous amount of research has focused on the regulation of secondary xylem formation and wood properties. In this study, we performed functional analysis of PtaGLIM1a, a LIM gene that is predominantly expressed in the differentiation of secondary xylem of the hybrid poplar ( Populus tremula × P. alba). With no growth retardation, transgenic poplar plants with increased and reduced expression levels of PtaGlim1a exhibited enhanced and diminished secondary growth, respectively, accompanied by a corresponding change in their lignin abundance. This study demonstrates that the wood-associated PtaGlim1a acts as a positive regulator of secondary xylem formation in poplar trees and could potentially be utilized in modifying the synthesis of plant secondary wall lignin.
- Subjects
POPLARS; TREE breeding; HYBRID trees; XYLEM; PLANT cells &; tissues
- Publication
Molecular Breeding, 2017, Vol 37, Issue 10, p1
- ISSN
1380-3743
- Publication type
Article
- DOI
10.1007/s11032-017-0724-7