木本植物形成层活动的分子调控机制  

Molecular regulatory mechanisms of cambium activity in woody plants

作　　者：叶青青[1] 周明兵[1] YE Qingqing;ZHOU Mingbing(State Key Laboratory of Subtropical Silviculture/Bamboo Industry Institute,Zhejiang A&F University,Hangzhou 311300,Zhejiang,China)

机构地区：[1]浙江农林大学省部共建亚热带森林培育国家重点实验室/竹子研究院,浙江杭州311300

出　　处：《浙江农林大学学报》2024年第4期879-886,共8页Journal of Zhejiang A&F University

基　　金：浙江省自然科学基金重点资助项目(LZ24C160002)。

摘　　要：维管形成层位于木质部和韧皮部之间,负责诸多生长和发育过程,在木材生产上也起重要作用。开展木本植物形成层活动的内部分子机制研究,对木本植物径向生长和林木生物量的增加具有重要的理论价值。深度成像结合基因表达分析技术是一种前沿研究方向,数学建模和仿真结合实时成像在模拟形成层生长和潜在的分子过程中有重要应用前景。基于该技术,总结了当前形成层活动分子层面的部分代表性成果,并对未来研究提出展望。目前植物形成层活动的分子研究主要集中在:(1)形成层活动受到植物激素信号的调控;(2)转录因子、肽受体信号调控形成层活动;(3)形成层活动受到受体激酶信号的调控。主要结论为:WOX4、WOX14、HB4、HB7、HB8、ANT等正向调控树木形成层活动,可作为木材增粗育种转基因的首选。未来通过计算机模型剖析形成层内细胞间通信联系,能够更全面地解析木本植物维管形成层发育分子机制。The vascular cambium is located between the xylem and phloem,which is responsible for many growth and development processes,and also plays an important role in wood production.In simulating cambium growth and potential molecular processes,deep imaging combined with gene expression analysis is a cutting-edge research direction,and mathematical modeling and simulation combined with real-time imaging have important application prospects.Based on this technique,some representative achievements at the molecular level of cambium activity are summarized,and the future research prospects are proposed.At present,molecular studies on cambium activity in plants mainly focus on:(1)cambium activity is regulated by plant hormone signaling;(2)cambium activity is regulated by transcription factors and peptide receptor signaling;(3)cambium activity is regulated by receptor kinase signals peptide receptor signaling.The main conclusions are that WOX4,WOX14,HB4,HB7,HB8 and ANT positively regulate the activities of tree cambium and can be used as the first choice for transgenic wood roughening breeding.In the future,the analysis of cell-to-cell communication connections in the cambium through computer models can better analyze the molecular mechanism of vascular cambium development in woody plants.

关 键 词：维管形成层 植物激素 肽受体信号 转录因子 木本植物 综述 

分 类 号：S718.4[农业科学—林学]