Genome-wide identification of the MCU gene family and expression analysis during Ralstonia solanacearum infection in Nicotiana tabacum L

文献类型： 外文期刊

第一作者： Deng, Lele

作者： Deng, Lele;Yang, Wenwu;Gao, Qiao;Shai, Yanju;Xiang, Haiying;Li, Xuemei;Sun, Yangyang;Geng, Ruimei;Xiao, Zhiliang;Yang, Aiguo;Chen, Zhiqiang;Liu, Zhengwen;Ren, Min;Wang, Zhaoyi

作者机构：

关键词： Nicotiana tabacum L.; MCU gene family; Expression analysis; Bacterial wilt

期刊名称：PLANT BIOTECHNOLOGY REPORTS （ 影响因子：1.6； 五年影响因子：2.1 ）

ISSN： 1863-5466

年卷期： 2025 年 19 卷 4 期

页码：

收录情况： SCI

摘要： The mitochondrial calcium uniporter (MCU), involved in intracellular Ca2+ signaling and reactive oxygen species (ROS) metabolism, is likely to play a crucial role in plant defense responses. In this study, we identified 11 MCU genes from the genome of Nicotiana tabacum L., and analyzed their phylogenetic relationships, physicochemical properties, structural characteristics, and transcriptional regulation. Additionally, qRT-PCR data were used to analyze the expression profiles of NtMCUs in different tissues, during Ralstonia solanacearum infection, and under exogenous hormone treatment. The results revealed that the 11 NtMCUs were clustered into two subgroups. Subgroups I and II are ancient and stable, but have generated functional differentiation. NtMCU1, NtMCU7, NtMCU11, and NtMCU8 exhibited significant differential expression between bacterial wilt-resistant and -susceptible varieties, making them key candidate genes for breeding BW-resistant crops. NtMCUs identification and analysis can contribute to understanding their potential functions in BW defense responses and provide a support for further studies.

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