RPL18aB helps maintain suspensor identity during early embryogenesis  

作　　者：fei xie hailong yan yang sun yameng wang hong chen wanying mao liyao zhang mengxiang sun xiongbo peng 

机构地区：[1]state key laboratory for hybrid rice,college of life sciences,wuhan university,Wuhan 430072,China

出　　处：《Journal of Integrative Plant Biology》2018年第4期266-269,共4页植物学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(31570317 and 31270362)

摘　　要：Summary During embryogenesis, plants are thought to use a mechanism that allows the suspensor to maintain its identity. Here, we reported that RPL18a is involved in this mechanism in Arabidopsis thaliana. The suspensor cells proliferated in rp118aB and formed a multicellular structure rather than undergo pro- grammed cell death, as in wild type. Suspensors of rpl18a expressed the embryo proper marker, DRN：： GFP, but not the suspensor marker, WOX8：：GFP. In addition, auxin accumulated throughout the suspensors of rpl18a proembryos. Suspensor-specific expression of RPL18a could rescue the cell proliferation defects in rpl18a suspensors. These findings supported a role for RPL18a in maintaining suspensor identity.Summary During embryogenesis, plants are thought to use a mechanism that allows the suspensor to maintain its identity. Here, we reported that RPL18a is involved in this mechanism in Arabidopsis thaliana. The suspensor cells proliferated in rp118aB and formed a multicellular structure rather than undergo pro- grammed cell death, as in wild type. Suspensors of rpl18a expressed the embryo proper marker, DRN：： GFP, but not the suspensor marker, WOX8：：GFP. In addition, auxin accumulated throughout the suspensors of rpl18a proembryos. Suspensor-specific expression of RPL18a could rescue the cell proliferation defects in rpl18a suspensors. These findings supported a role for RPL18a in maintaining suspensor identity.

关 键 词：DRN GFP WOX Figure RPL18aB helps maintain suspensor identity during early embryogenesis 

分 类 号：Q944.4[生物学—植物学]