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Construction of Fluorescently Labeled Strains of Nucleus and Mitochondria for Ustilago esculenta |
TANG Jin-Tian*, YANG Fu-Rong*, ZHANG Lei-Lei, LI Yu-Kang, ZHANG Ya-Fen, FU Hui-Lan, XIA Wen-Qiang, CUI Hai-Feng, YE Zi-Hong** |
College of Life Sciences/Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, China Jiliang University, HangZhou 310018, China |
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Abstract Stem swollen of Zizania latifolia was associated with the successful infection of Ustilago esculenta, which depended on the dimorphic transition of U. esculenta. The dynamic changes of the nucleus and mitochondria during the process of dimorphic transition remain unknown. This study will focus on the coding gene for histone H1 and the coding sequence for the mitochondrial targeting signal (MTS) in the nucleus, respectively. After connecting them with the GFP and mCherry fluorescent protein genes, respectively, fluorescent labeling vectors for the nucleus and mitochondria was constructed. Wild-type strains UeT14 and UeT55 of U. esculenta as experimental materials to genetic transformation by Agrobacterium tumefaciens-mediated transformation (ATMT), and the recombinant strains that stably expressed red and green fluorescent proteins in nucleus or mitochondria were obtained: UeT55-H1-GFP, UeT14-H1-mCherry, UeT55-MTS-GFP and UeT14-MTS-mCherry. In UeT55-H1-GFP and UeT14-H1-mCherry strains, bright and round fluorescent spots could be seen in the center of the spores, which were co-located with the blue fluorescence formed by DAPI. In UeT55-MTS-GFP and UeT14-MTS-mCherry strains, small dot green or red fluorescence could be seen in the spores, and the green fluorescence was co-located with the red fluorescence formed by MitoTracker. In this study, the stable expression of fluorescent protein in nucleus or mitochondria was obtained, which provides an important reference and material for studying the molecular mechanism of growth, development, fusion and infection of U. esculenta.
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Received: 27 March 2023
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Corresponding Authors:
**zhye@cjlu.edu.cn
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About author:: * These authors contributed equally to this work |
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