Chengwei Song: Plant Physiology First Author

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Chengwei Song, first author of “PagUNE12 encoding a basic_helix-loop-helix transcription factor regulates the development of secondary vascular tissue in poplar”

Current Position: Henan University of Science and Technology, College of Agriculture, Lecturer.

Education:

PhD Beijing Forestry University, Cell Biology (Principle supervisor: Prof. Jinxing Lin)

MSc. Henan University of Science and Technology, Master of Botany (Principle supervisor: Prof. Xiaogai Hou)

BSc. Henan University of Science and Technology, Bachelor of Science

Non-scientific Interests: History, Basketball

Brief bio:

I studied in Henan University of Science and Technology for my master’s degree, and mainly engaged in the research of develop molecular markers of peony based on retrotransposons. Recently, I obtained my PhD degree from the Beijing Forestry University with Prof. Jinxing Lin, and my research interests mainly focused on molecular mechanism of secondary vascular tissue development in poplar. Currently, I am a lecturer at Henan University of Science and Technology and studding the molecular mechanism of lignin biosynthesis affect flower stem development of tree peony.

In the present paper, we cloned a bHLH transcription factor gene PagUNE12 from 84K poplar. Overexpressing PagUNE12 significantly reduced plant height and internode length. According to cytological observations, overexpressing PagUNE12 in 84K poplar promoted the secondary xylem development with thicker secondary cell walls, and biochemical analysis showed that overexpressing PagUNE12 in 84K poplar enhanced lignin accumulated in the secondary xylem with lower ratio of syringyl (S) and guaiacyl (G) lignin units. Overall, our results demonstrated that PagUNE12 played an important role in regulating secondary growth in poplar, laying the foundation for generating optimized trees with improved wood quality for commercial afforestation.

 

姓名：宋程威

目前职位：河南科技大学，农学院，讲师

教育经历：

博士，北京林业大学，细胞生物学，导师：林金星教授，李瑞丽副教授

硕士，河南科技大学，植物学，导师：侯小改教授

本科，河南科技大学，理学学士学位

兴趣爱好：历史，打篮球

个人简介：

我硕士就读于河南科技大学，主要进行基于反转录转座子开发牡丹分子标记的研究。博士期间，我加入了北京林业大学林金星教授课题组，研究兴趣主要集中在杨树次生维管组织发育的分子机制研究。目前，我在河南科技大学任职，主要研究方向为牡丹木质素生物合成影响花茎发育的分子机制。

在本研究中，我们从84K杨树中克隆获得了一个bHLH转录因子PagUNE12，细胞学观察发现过表达PagUNE12促进84K杨次生木质部发育和次生细胞壁加厚，生化分析表明PagUNE12促进84K杨次生木质部木质素的积累，降低木质素单体S/G比值。我们的研究表明PagUNE12在调节杨树的次生生长发挥着重要作用，为林木性状遗传改良，进行优质木材经济造林奠定了基础。