Genome-Wide Identification and Abiotic Stress Expression Analysis of CKX and IPT Family Genes in Cucumber (Cucumis sativus L.)

文献类型： 外文期刊

第一作者： Xu, Yang

作者： Xu, Yang;Ran, Shengxiang;Li, Shuhao;Lu, Junyang;Hou, Maomao;Zhong, Fenglin;Huang, Weiqun;Zheng, Jingyuan

作者机构： Fujian Agr & Forestry Univ, Coll Hort, Fuzhou 350002, Peoples R China;Fujian Seed Stn, Fuzhou 350003, Peoples R China;Hunan Acad Agr Sci, Vegetable Res Inst, Changsha 410128, Peoples R China

关键词： cucumber; CsCKXs; CsIPTs; growth and development; abiotic stress response

期刊名称：PLANTS-BASEL （ 2022影响因子：4.5； 五年影响因子：4.8 ）

ISSN： 2223-7747

年卷期： 2024 年 13 卷 3 期

页码：

收录情况： SCI

摘要： Cytokinins (CKs) are among the hormones that regulate plants' growth and development, and the CKX and IPT genes, which are CK degradation and biosynthesis genes, respectively, play important roles in fine-tuning plants' cytokinin levels. However, the current research on the function of IPT and CKX in cucumber's growth, development, and response to abiotic stress is not specific enough, and their regulatory mechanisms are still unclear. In this study, we focused on the IPT and CKX genes in cucumber, analyzed the physiological and biochemical properties of their encoded proteins, and explored their expression patterns in different tissue parts and under low light, salt stress, and drought stress. Eight CsCKX and eight CsIPT genes were identified from the cucumber genome. We constructed a phylogenetic tree from the amino acid sequences and performed prediction analyses of the cis-acting elements of the CsCKX and CsIPT promoters to determine whether CsCKXs and CsIPTs are responsive to light, abiotic stress, and different hormones. We also performed expression analysis of these genes in different tissues, and we found that CsCKXs and CsIPTs were highly expressed in roots and male flowers. Thus, they are involved in the whole growth and development process of the plant. This paper provides a reference for further research on the biological functions of CsIPT and CsCKX in regulating the growth and development of cucumber and its response to abiotic stress.

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