文献类型：期刊文献

英文题名：Genome-Wide Identification of the Expansin Gene Family and Its Potential Association with Drought Stress in Moso Bamboo

作者：Jin, Kang-Ming[1,2] Zhuo, Ren-Ying[1,2] Xu, Dong[1,2] Wang, Yu-Jun[1,2] Fan, Hui-Jin[1,2] Huang, Bi-Yun[1,2] Qiao, Gui-Rong[1,2]

第一作者：Jin, Kang-Ming

通信作者：Qiao, GR[1];Qiao, GR[2]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Subtrop Forestry, Key Lab Tree Breeding Zhejiang Prov, Hangzhou 311400, Peoples R China

年份：2020

卷号：21

期号：24

起止页码：1-21

外文期刊名：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES

收录：;Scopus(收录号：2-s2.0-85097775122);WOS:【SCI-EXPANDED(收录号:WOS:000602882800001)】；

基金：This research was funded by the "National Nonprofit Institute Research Grant of CAF, grant number CAFYBB2020ZB004" and the "Basic Public Welfare Research Program of Zhejiang Province, grant number LGN18C160007".

语种：英文

外文关键词：expansins; evolutionary pattern; abiotic stress; plant cell wall; drought

摘要：Expansins, a group of cell wall-loosening proteins, are involved in cell-wall loosening and cell enlargement in a pH-dependent manner. According to previous study, they were involved in plant growth and abiotic stress responses. However, information on the biological function of the expansin gene in moso bamboo is still limited. In this study, we identified a total of 82 expansin genes in moso bamboo, clustered into four subfamilies (alpha-expansin (EXPA), beta-expansin (EXPB), expansin-like A (EXLA) and expansin-like B (EXPB)). Subsequently, the molecular structure, chromosomal location and phylogenetic relationship of the expansin genes of Phyllostachys edulis (PeEXs) were further characterized. A total of 14 pairs of tandem duplication genes and 31 pairs of segmented duplication genes were also identified, which may promote the expansion of the expansin gene family. Promoter analysis found many cis-acting elements related to growth and development and stress response, especially abscisic acid response element (ABRE). Expression pattern revealed that most PeEXs have tissue expression specificity. Meanwhile, the expression of some selected PeEXs was significantly upregulated mostly under abscisic acid (ABA) and polyethylene glycol (PEG) treatment, which implied that these genes actively respond to expression under abiotic stress. This study provided new insights into the structure, evolution and function prediction of the expansin gene family in moso bamboo.