Structural and Histochemical Features of the Slow-Growing Perennial Coptis chinensis Franch.(Ranunculaceae)  

作　　者：Jingyuan Yang Jie Zhou Jiaojiao Jin Yi Li Xia Zhang Teng Li Mengdi Zhang Xiaodong Cai Chaodong Yang Cunyu Zhou 

机构地区：[1]Hubei Province Key Laboratory of Conservation Biology for Shennongjia Golden Monkey,Shennongjia National Park Administration,Muyu Town,42400,China [2]Ningxia Jiesi Environmental Protection Technology Co.,Ltd.,Yinchuan,750000,China [3]Engineering Research Center of Ecology and Agriculture Use of Wetland,Ministry of Education,Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland,Yangtze University,Jingzhou,434025,China

出　　处：《Phyton-International Journal of Experimental Botany》2021年第6期1685-1696,共12页国际实验植物学杂志（英文）

基　　金：This work was supported by the Major Program on Technology Innovation of Hubei Province(2019ACA162);the Hubei Province Key Laboratory of Conservation Biology for Shennongjia Golden Monkey Opening Fund(SNJGKL202002);the Engineering Research Center of Ecology and Agriculture Use of Wetland,Ministry of Education opening fund,Yangtze University(KFT202004).

摘　　要：Huanglian(Coptis chinensis Franch.)is a slow-growing perennial medicinal herb with considerable economic value.This study aimed to determine the structural characteristics and the levels of berberine deposits in the organs and tissues of Huanglian using light and epifluorescence microscopy.The adventitious roots are composed of primary and secondary structures with endodermis,exodermis,and phellem.The rhizome structures are composed of primary and secondary structures with cuticle and phellem.The leaves are composed of sclerenchymatous rings,isolateral mesophyll,and thin cuticles.We detected berberine in the xylem walls of the roots and rhizomes as well as in the sclerenchymatous rings of the petioles.We postulate that as the exodermis is developed,the deposition of berberine in the xylem closest to the root tips may affect water and nutrient absorption and transfer.Leaf blades had a thin cuticle and isolateral mesophyll,suggesting shade tolerance.These structural and histochemical features suggest that Huanglian is adapted to the slow growing nature of a shady environment.

关 键 词：Berberine deposition Coptis chinensis HISTOCHEMISTRY structure 

分 类 号：R28[医药卫生—中药学]