文献类型：期刊文献

英文题名：Transcriptome differences between 20- and 3,000-year-old Platycladus orientalis reveal that ROS are involved in senescence regulation

作者：Chang, Ermei[1] Zhang, Jin[1] Deng, Nan[1] Yao, Xiamei[2] Liu, Jianfeng[1] Zhao, Xiulian[1] Jiang, Zeping[1] Shi, Shengqing[1]

第一作者：Chang, Ermei

通信作者：Jiang, Zeping|[a00056aebd9b0410b9f21]江泽平;[a00056bd9c3a642dc3abd]江泽平;

机构：[1] State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China; [2] School of Biological Science and Food Engineering, Fuyang Normal University, Fuyang, Anhui, 236037, China

年份：2017

卷号：29

起止页码：68-77

外文期刊名：Electronic Journal of Biotechnology

收录：EI(收录号：20173704145890);Scopus(收录号：2-s2.0-85028917112)

语种：英文

外文关键词：Oxygen - Physiology - Plants (botany) - Transcription - Forestry - Polymerase chain reaction

摘要：Background Platycladus orientalis has an extremely long life span of several thousands of years, attracting great interests in the mechanisms involved in such successful senescence regulation and resistance at physiological and molecular levels. Results The levels of reactive oxygen species (ROS) were higher in 3,000-year-old than in 20-year-old P. orientalis, and the activities of GR and GSH demonstrated the same trend. We produced and analyzed massive sequence information from pooled samples of P. orientalis through transcriptome sequencing, which generated 51,664 unigenes with an average length of 475 bp. We then used RNA-seq analysis to obtain a high-resolution age–course profile of gene expression in 20- and 3,000-year-old P. orientalis individuals. Totally, 106 differentially expressed genes were obtained, of which 47 genes were downregulated and 59 upregulated in the old tree. These genes were involved in transcription factors, hormone-related responses, ROS scavengers, senescence-related responses, stress response, and defense and possibly play crucial roles in tackling various stresses in the 3,000-year-old P. orientalis during its life time. The expression patterns of genes related to ROS homeostasis further indicated that the high ability of ROS scavenging could be helpful for the 3,000-year-old P. orientalis to resist senescence. Conclusions This study provides a foundation for the elucidation of senescence resistance through molecular studies and the discovery of useful genes in P. orientalis. ? 2017