Genome-Wide Characterization of the PIFs Family in Sweet Potato and Functional Identification of IbPIF3.1 under Drought and Fusarium Wilt Stresses
文献类型： 外文期刊
作者： Nie, Nan 1 ; Huo, Jinxi 1 ; Sun, Sifan 1 ; Zuo, Zhidan 1 ; Chen, Yanqi 1 ; Liu, Qingchang 1 ; He, Shaozhen 1 ; Gao, Shaopei 1 ; Zhang, Huan 1 ; Zhao, Ning 1 ; Zhai, Hong 1 ;
作者机构： 1.China Agr Univ, Coll Agron & Biotechnol, Key Lab Sweet Potato Biol & Biotechnol, Beijing Key Lab Crop Genet Improvement,Lab Crop He, Beijing 100193, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Sericulture & Tea, Hangzhou 310021, Peoples R China
关键词： Ipomoea batatas; Ipomoea triloba; Ipomoea trifida; PIFs; expression analysis; function analysis
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）
ISSN：
年卷期： 2023 年 24 卷 4 期
页码：
收录情况： SCI
摘要： Phytochrome-interacting factors (PIFs) are essential for plant growth, development, and defense responses. However, research on the PIFs in sweet potato has been insufficient to date. In this study, we identified PIF genes in the cultivated hexaploid sweet potato (Ipomoea batatas) and its two wild relatives, Ipomoea triloba, and Ipomoea trifida. Phylogenetic analysis revealed that IbPIFs could be divided into four groups, showing the closest relationship with tomato and potato. Subsequently, the PIFs protein properties, chromosome location, gene structure, and protein interaction network were systematically analyzed. RNA-Seq and qRT-PCR analyses showed that IbPIFs were mainly expressed in stem, as well as had different gene expression patterns in response to various stresses. Among them, the expression of IbPIF3.1 was strongly induced by salt, drought, H2O2, cold, heat, Fusarium oxysporum f. sp. batatas (Fob), and stem nematodes, indicating that IbPIF3.1 might play an important role in response to abiotic and biotic stresses in sweet potato. Further research revealed that overexpression of IbPIF3.1 significantly enhanced drought and Fusarium wilt tolerance in transgenic tobacco plants. This study provides new insights for understanding PIF-mediated stress responses and lays a foundation for future investigation of sweet potato PIFs.
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