文献类型：期刊文献

英文题名：Comparative transcriptomic analysis reveals the roles of overlapping heat-/drought-responsive genes in poplars exposed to high temperature and drought

作者：Jia, Jingbo[1,2] Zhou, Jing[1] Shi, Wenguang[1] Cao, Xu[2] Luo, Jie[2] Polle, Andrea[3] Luo, Zhi-Bin[1]

第一作者：Jia, Jingbo

通信作者：Luo, ZB[1]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Key Lab Silviculture, State Forestry Adm,Res Inst Forestry, Beijing 100091, Peoples R China;[2]Northwest A&F Univ, Coll Life Sci, Yangling 712100, Shaanxi, Peoples R China;[3]Georg August Univ, Dept Forest Bot & Tree Physiol, Busgen Inst, Busgenweg 2, D-37077 Gottingen, Germany

年份：2017

卷号：7

外文期刊名：SCIENTIFIC REPORTS

收录：;Scopus(收录号：2-s2.0-85013744865);WOS:【SCI-EXPANDED(收录号:WOS:000395174800001)】；

基金：This research was jointly supported by the Fundamental Research Funds for the Central Non-profit Research Institution of Chinese Academy of Forestry (grant no. CAFYBB2014ZX001-2), the National Key Research and Development Program (Grant No. 2016YFD0600105) and the National Natural Science Foundation of China (Grant Nos 31270647, 31470618 and 31670609). Research conducted in Professor Andrea Polle's laboratory was supported by the Deutsche Forschungsgemeinschaft (DFG). Dr. Duncan Jackson from the United Kingdom is sincerely thanked for the English correction.

语种：英文

摘要：High temperature (HT) and drought are both critical factors that constrain tree growth and survival under global climate change, but it is surprising that the transcriptomic reprogramming and physiological relays involved in the response to HT and/or drought remain unknown in woody plants. Thus, Populus simonii saplings were exposed to either ambient temperature or HT combined with sufficient watering or drought. RNA-sequencing analysis showed that a large number of genes were differentially expressed in poplar roots and leaves in response to HT and/or desiccation, but only a small number of these genes were identified as overlapping heat-/drought-responsive genes that are mainly involved in RNA regulation, transport, hormone metabolism, and stress. Furthermore, the overlapping heat-/drought-responsive genes were co-expressed and formed hierarchical genetic regulatory networks under each condition compared. HT-/drought-induced transcriptomic reprogramming is linked to physiological relays in poplar roots and leaves. For instance, HT-and/or drought-induced abscisic acid accumulation and decreases in auxin and other phytohormones corresponded well with the differential expression of a few genes involved in hormone metabolism. These results suggest that overlapping heat-/drought-responsive genes will play key roles in the transcriptional and physiological reconfiguration of poplars to HT and/or drought under future climatic scenarios.