Transcription factor DcbZIPs regulate secondary metabolism in Dendrobium catenatum during cold stress
文献类型： 外文期刊
作者： Zhou, Xiaohui 1 ; Lu, Chenfei 1 ; Zhou, Fenfen 3 ; Zhu, Yanqin 3 ; Jiang, Wu 4 ; Zhou, Aicun 1 ; Shen, Yanghui 5 ; Pan, Lanying 2 ; Lv, Aimin 1 ; Shao, Qingsong 1 ;
作者机构： 1.Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Hangzhou, Peoples R China
2.Zhejiang Shuren Univ, Shulan Int Med Coll, Hangzhou, Peoples R China
3.Zhejiang A&F Univ, Zhejiang Prov Key Lab Resources Protect & Innovat, Hangzhou, Peoples R China
4.Zhejiang Acad Agr Sci, Zhejiang Inst Subtrop Crops, Wenzhou, Peoples R China
5.Panan Tradit Chinese Med Ind Innovat & Dev Inst, Jinhua, Zhejiang, Peoples R China
关键词： bZIP; cold stress; Dendrobium catenatum; secondary metabolism; transcription regulation
期刊名称：PHYSIOLOGIA PLANTARUM （ 影响因子：3.6； 五年影响因子：5.4 ）
ISSN： 0031-9317
年卷期： 2024 年 176 卷 5 期
页码：
收录情况： SCI
摘要： Cold stress seriously affects plant development and secondary metabolism. The basic region/leucine zipper (bZIP) is one of the largest transcription factor (TFs) family and widely involved in plant cold stress response. However, the function of bZIP in Dendrobium catenatum has not been well-documented. Cold inhibited the growth of D. catenatum and increased total polysaccharide and alkaloid contents in stems. Here, 62 DcbZIP genes were identified in D. catenatum, which were divided into 13 subfamilies. Among them, 58 DcbZIPs responded to cold stress, which were selected based on the transcriptome database produced from cold-treated D. catenatum seedlings. Specifically, the expression of DcbZIP3/6/28 was highly induced by cold treatment in leaves or stems. Gene sequence analysis indicated that DcbZIP3/6/28 contains the bZIP conserved domain and is localized to the cell nucleus. Co-expression networks showed that DcbZIP6 was significantly negatively correlated with PAL2 (palmitoyl-CoA), which is involved in flavonoid metabolism. Moreover, DcbZIP28 has significant negative correlations with various metabolism-related genes in the polysaccharide metabolic pathway, including PFKA1 (6-phosphofructokinase), ALDO2 (aldose-6-phosphate reductase) and SCRK5 (fructokinase). These results implied that DcbZIP6 or DcbZIP28 are mainly involved in flavonoid or polysaccharide metabolism. Overall, these findings provide new insights into the roles of the DcbZIP gene family in secondary metabolism in D. catenatum under cold stress.
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