The proposed role of MSL-lncRNAs in causing sex lability of female poplars  

作　　者：Jinyan Mao Suyun Wei Yingnan Chen Yonghua Yang Tongming Yin 

机构地区：[1]State Key Laboratory for Tree Genetics and Breeding,Co-Innovation Center for Sustainable Forestry in Southern China,Key Laboratory of Tree Genetics and Biotechnology of Educational Department of China,Key Laboratory of Tree Genetics and Breeding of Jiangsu Province,Nanjing Forestry University,Nanjing,210037,China [2]Institute for Plant Molecular Biology,State Key Laboratory of Pharmaceutical Biotechnology,School of Life Sciences,Nanjing University,Nanjing 210023,China

出　　处：《Horticulture Research》2023年第5期29-37,共9页园艺研究（英文）

基　　金：The work was supported by the National Key Research and Development Plan of China(2021YFD2200202);the Natural Science Foundation of China(32071795);the Key Research and Development Project of Jiangsu Province,China(BE2021366).

摘　　要：Labile sex expression is frequently observed in dioecious plants,but the underlying genetic mechanism remains largely unknown.Sex plasticity is also observed in many Populus species.Here we carried out a systematic study on a maleness-promoting gene,MSL,detected in the Populus deltoides genome.Our results showed that both strands of MSL contained multiple cis-activating elements,which generated long non-coding RNAs(lncRNAs)promoting maleness.Although female P.deltoides did not have the male-specific MSL gene,a large number of partial sequences with high sequence similarity to this gene were detected in the female poplar genome.Based on sequence alignment,the MSL sequence could be divided into three partial sequences,and heterologous expression of these partial sequences in Arabidopsis confirmed that they could promote maleness.Since activation of the MSL sequences can only result in female sex lability,we propose that MSL-lncRNAs might play a role in causing sex lability of female poplars.

关 键 词：FEMALE SIMILARITY alignment 

分 类 号：S792.11[农业科学—林木遗传育种]