文献类型：期刊文献

英文题名：Transcriptome analysis of the transition from primary to secondary growth of vertical stem in Eucalyptus grandis

作者：Zhou, Fangping[1,2] Zhang, Haonan[1,2,3] Chen, Shanshan[1,2,4] Fan, Chunjie[1,2,5]

第一作者：Zhou, Fangping

通信作者：Fan, CJ[1];Fan, CJ[2];Fan, CJ[3]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Trop Forestry, Key Lab State Forestry Adm Trop Forestry, Guangzhou 510520, Peoples R China;[3]Northeast Forestry Univ, Coll Life Sci, Harbin, Peoples R China;[4]Northeast Forestry Univ, State Key Lab Tree Genet & Breeding, Harbin, Peoples R China;[5]Cent South Univ Forestry & Technol, Yuelushan Lab, Changsha, Hunan, Peoples R China

年份：2024

卷号：24

期号：1

外文期刊名：BMC PLANT BIOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001160677500001)】；

基金：This research was supported by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2020ZB004).

语种：英文

外文关键词：Eucalyptus grandis; Secondary growth; Wood formation; Stem

摘要：Eucalyptus was one of the most cultivated hardwood species worldwide, with rapid growth, good wood properties and a wide range of adaptability. Eucalyptus stem undergoes primary growth (longitudinal growth) followed by secondary growth (radial growth), which produces biomass that is an important source of energy worldwide. In order to better understand the genetic regulation of secondary growth in Eucalyptus grandis, Transcriptome analyses in stem segments along a developmental gradient from the third internode to the eleventh internode of E. grandis that spanned primary to secondary growth were carried out. 5,149 genes that were differentially expressed during stem development were identified. Combining the trend analysis by the Mfuzz method and the module-trait correlation analysis by the Weighted Gene Co-expression Network Analysis method, a total of 70 differentially expressed genes (DEGs) selected from 868 DEGs with high connectivity were found to be closely correlated with secondary growth. Results revealed that the differential expression of these DEGs suggests that they may involve in the primary growth or secondary growth. AP1, YAB2 TFs and EXP genes are highly expressed in the IN3, whereas NAC, MYB TFs are likely to be important for secondary growth. These results will expand our understanding of the complex molecular and cellular events of secondary growth and provide a foundation for future studies on wood formation in Eucalyptus.