Exogenous Spermidine Promotes Somatic Embryogenesis of Cunninghamia lanceolata by Altering the Endogenous Phytohormone Content  

作　　者：Dandan Wang Yulin Guo Xiaofei Long Yan Pan Dingjie Yang Rui Li Ye Lu Ying Chen Jisen Shi Jinhui Chen 

机构地区：[1]Key Laboratory of Forest Genetics&Biotechnology of Ministry of Education of China,Co-Innovation Center for Sustainable Forestry in Southern China,Nanjing Forestry University,Nanjing,210037,China [2]Jiangsu Key Laboratory for Poplar Germplasm Enhancement and Variety Improvement Nanjing Forestry University,Nanjing,210037,China

出　　处：《Phyton-International Journal of Experimental Botany》2020年第1期27-34,共8页国际实验植物学杂志（英文）

基　　金：This research was supported by Foundation of Jiangsu forestry bureau(LYKJ[2017]42);Key research and development plan of Jiangsu Province(BE2017376);the Nature Science Foundation of China(31770715);the Qinglan project of Jiangsu province,Priority Academic Program Development of Jiangsu Higher Education Institutions,Natural Science Foundation of Jiangsu Province(BK20181176);the Joint Fund of the Natural Science Foundation of China and the Karst Science Research Center of Guizhou Province(Grant No.U1812401).

摘　　要：In order to study how exogenous hormones in C.lanceolata(gymnosperm)regulate somatic embryogenesis,we measured the endogenous phytohormones of two genotypes with different somatic embryogenesis efficiency and found that an increase in endogenous concentrations of IAA and ABA may be correlated to more efficient somatic embryogenesis.By applying exogenous spermidine,we found that exogenous hormones may affect somatic embryogenesis efficiency through affecting the endogenous phytohormone content.Based on these results,further studies can be conducted whereby the concentration of exogenous hormones or the levels of endogenous phytohormones by molecular methods are regulated to promote somatic embryogenesis.Our research may benefit the long-term economic output of the forestry industry and lays the foundation to studying the molecular mechanism that controls somatic embryogenesis efficiency.

关 键 词：SPERMIDINE C.lanceolata somatic embryogenesis endogenous phytohormones 

分 类 号：F42[经济管理—产业经济]