文献类型：期刊文献

英文题名：The Glutathione Peroxidase Gene Family in Nitraria sibirica: Genome-Wide Identification, Classification, and Gene Expression Analysis under Stress Conditions

作者：Lian, Ziming[1,2] Zhang, Jingbo[3] Hao, Zhaodong[1] Zhu, Liming[1] Liu, Yuxin[1,2] Fang, Hao[2] Lu, Ye[1] Li, Xinle[3] Shi, Jisen[1] Chen, Jinhui[1] Cheng, Tielong[2]

第一作者：Lian, Ziming

通信作者：Cheng, TL[1]

机构：[1]Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, State Key Lab Tree Genet & Breeding, Nanjing 210037, Peoples R China;[2]Nanjing Forestry Univ, Coll Biol & Environm, Nanjing 210037, Peoples R China;[3]Chinese Acad Forestry, Expt Ctr Desert Forestry, Dengkou 015200, Peoples R China

年份：2023

卷号：14

期号：4

外文期刊名：GENES

收录：;Scopus(收录号：2-s2.0-85154609627);WOS:【SCI-EXPANDED(收录号:WOS:000977485800001)】；

基金：This research was supported by the Nature Science Foundation of China (31770715), and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

语种：英文

外文关键词：Nitraria sibirica; glutathione peroxidase; salt stress; genomics; gene expression

摘要：Plant glutathione peroxidases (GPXs) are the main enzymes in the antioxidant defense system that sustain H2O2 homeostasis and normalize plant reaction to abiotic stress conditions. However, the genome-wide identification of the GPX gene family and its responses to environmental stresses, especially salt stress, in Nitraria sibirica, which is a shrub that can survive in saline environments, has not yet been reported. Here, we first report the genome-wide analysis of the GPX gene family in N. sibirica, leading to a total of seven NsGPX genes that are distributed on six of the twelve chromosomes. Phylogenetic analysis showed that NsGPX genes were grouped into four major groups (Group I-IV). Three types of cis-acting elements were identified in the NsGPX promoters, mainly related to hormones and stress response. The quantitative real-time PCR (qRT-PCR) analysis indicated that NsGPX1 and NsGPX3 were significantly up-regulated in stem and leaf, while NsGPX7 transcriptionally in root in response to salt stress. The current study identified a total seven NsGPX genes in N. sibirica via genome-wide analysis, and discovered that NsGPXs may play an important role in response to salt stress. Taken together, our findings provide a basis for further functional studies of NsGPX genes, especially in regarding to the resistance to salt stress of this halophyte plant N. sibirica, eventually aid in the discovery of new methods to restore overtly saline soil.