植物次生细胞壁生物合成的转录调控网络  

Transcriptional Regulatory Network of Secondary Cell Wall Biosynthesis in Plants

作　　者：张雨 赵明洁[1,2,3] 张蔚 Yu Zhang;Mingjie Zhao;Wei Zhang(College of Horticulture&Forestry Sciences,Huazhong Agricultural University,Wuhan 430070,China;Key Laboratory of Horticultural Plant Biology,Ministry of Education,Wuhan 430070,China;Key Laboratory of Urban Agriculture in Central China,Ministry of Agriculture and Rural Affairs,Wuhan 430070,China)

机构地区：[1]华中农业大学园艺林学学院,武汉430070 [2]园艺植物生物学教育部重点实验室,武汉430070 [3]农业农村部华中都市农业重点实验室,武汉430070

出　　处：《植物学报》2020年第3期351-368,共18页Chinese Bulletin of Botany

基　　金：国家自然科学基金(31772342)。

摘　　要：植物次生细胞壁包含纤维素、半纤维素和木质素,赋予细胞壁机械强度及疏水性,这种特性对植物直立生长、水分和营养物质运输以及抵御生物和非生物胁迫十分重要。该文总结了调控次生细胞壁生物合成的转录因子及其调控机制,包括NAC转录因子调控次生壁合成的一级开关作用,AtMYB46/AtMYB83及其下游调控因子的二级开关作用,以及其它转录因子对次生壁生物合成的调控作用,并对未来研究内容和方法进行了展望,以期为深入系统理解次生细胞壁生物合成的转录调控网络提供参考。Plant secondary cell walls(SCWs)contain cellulose,hemicellulose and lignin,which endow the cell walls with mechanical strength and hydrophobicity.This characteristic is very important for plant upright growth,water and nutrient transport,and resistance to biotic and abiotic stresses.In this review,we summarize the transcription factors regulating SCW biosynthesis and their regulatory mechanisms,including NAC transcription factors functioning as first-layer master switch,the AtMYB46/AtMYB83 and their downstream regulators serving as secondary-layer master switch,as well as the other transcription factors involved in the regulation of biosynthesis of the SCW.The future research contents and methods are also prospected in order to provide reference for further research on the transcriptional regulatory network of SCW biosynthesis.

关 键 词：NAC转录因子 MYB转录因子 次生细胞壁 生物合成 调控网络 

分 类 号：Q943.2[生物学—植物学]