木栓层在水和溶质运输中的生理功能研究进展  

Research Progress on Physiological Functions of Suberin lamellae in Water and Solutes Transport

作　　者：张标 吴健 张杨[4] 董小卫[4] 韩硕 高昕 杜从伍 李慧英 种学法 朱莹莹 刘海伟[1] Biao Zhang;Jian Wu;Yang Zhang;Xiaowei Dong;Shuo Han;Xin Gao;Congwu Du;Huiying Li;Xuefa Chong;Yingying Zhu;Haiwei Liu(Institute of Tobacco Research of Chinese Academy of Agricultural Sciences/Key Laboratory of Tobacco Biology and Processing,Ministry of Agriculture and Rural Affairs,Qingdao 266101,China;Graduate School of Chinese Academy of Agricultural Sciences,Beijing 100081,China;Shandong Linyi Tobacco Co.,Ltd.,Linyi 276000,China;China Tobacco Shandong Industrial Co.,Ltd.,Jinan 250000,China)

机构地区：[1]中国农业科学院烟草研究所/农业农村部烟草生物学与加工重点实验室,青岛266101 [2]中国农业科学院研究生院,北京100081 [3]山东临沂烟草有限公司,临沂276000 [4]山东中烟工业有限责任公司,济南250000

出　　处：《植物学报》2023年第6期1008-1018,共11页Chinese Bulletin of Botany

基　　金：山东中烟工业有限责任公司科技项目(No.202001001);中国农业科学院科技创新工程(No.ASTIP-TRIC03)。

摘　　要：植物的根可选择性地从土壤中吸收水分和养分,并运输至地上部供植物生长发育所需,这些功能与其解剖结构密切相关。根部吸收的水和溶质在根中的径向运输主要包括质外体、共质体和跨细胞3条途径。内皮层是包围中央维管系统的最内细胞层。长期以来,内皮层分化形成的凯氏带被认为在阻断水和溶质通过质外体途径运输中发挥决定性作用。然而,近年来,研究发现内皮层分化形成的木栓层对水和溶质的径向运输作用不亚于凯氏带,甚至称木栓化是内皮层细胞的第二次生命。该文综述了近年来木栓层在水和溶质运输中生理功能的最新进展,阐述了木栓层与作物抗旱、抗盐、抗重金属和抗养分胁迫之间的关系,以期为内皮层可塑性调控植物生理功能的理论和实践提供参考。Plant roots can acquire water and nutrients selectively from soil and transport them upwards to the aerial parts for plant growth and development.These functions are closely related to their anatomical structures.The radial transport of water and solutes absorbed by roots mainly includes three different pathways,namely,the apoplastic pathway,the symplastic pathway and the transcellular pathway.The endodermis is the innermost cell layer that surrounds the central vasculature.For a long time,endodermal differentiation formed the Casparian strips has been considered to play a decisive role in blocking water and solutes transport through the apoplastic pathway.However,in recent years,it has been found that suberin lamellae formed by endodermal differentiation plays no less important role in the radial transport of water and solutes than Casparian strips,and even that suberization is the second life of an endodermal cell.In this paper,we reviewed the latest research progress on the physiological function of suberin lamellae in water and solutes transport in recent years,and discussed the relationship between suberin lamellae and drought,salt,nutrient and heavy metal stress of crops,in order to provide a reference for the theory and practice of endodermal plasticity in the regulation of plant physiological function.

关 键 词：根 内皮层 木栓层 水和溶质 生理功能 

分 类 号：Q945[生物学—植物学]