![]() vaginatum plant acquired a large number of TDGs related to salt stress in the second WGD (~23.3 Ma). vaginatum leaves became adapted to salt stress in the earlier whole-genome duplication (WGD ~83.3 million years ago Ma), whereas the entire P. The GO terms included: “ion transmembrane transporter activity,” “anion transmembrane transporter activity” and “cation transmembrane transport,” and KEGG pathways included “ABC transport.” RNA-seq analysis of TDGs showed tissue-specific expression under salt stress, and we speculated that P. vaginatum TDGs resulted in enrichment in many GO terms and KEGG pathways when compared to four other closely-related species. vaginatum genome and estimated the divergence time of pairs of TDGs based on synonymous substitution rates (Ks). Here, we identified 2,542 tandem duplicated genes (TDGs) in the P. Gene duplication plays an important role in plant evolution, conferring significant plant adaptation at the genomic level. Seashore paspalum ( Paspalum vaginatum) is a halophytic, warm-season grass which is closely related to various grain crops. 4College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing, China.3School of Agriculture, Jinhua Polytechnic, Jinhua, China.2Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Ministry of Education, College of Forestry, Hainan University, Haikou, China.1College of Tropical Crops, Hainan University, Haikou, China.Xu Hu 1,2 †, Jiangshan Hao 1,3 †, Ling Pan 2, Tao Xu 1,2, Longzhou Ren 1,2, Yu Chen 4, Minqiang Tang 2 *, Li Liao 1 * and Zhiyong Wang 2 *
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