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Genome-wide identification and expression analysis of the cyclic nucleotide-gated ion channel (CNGC) gene family in Saccharum spontaneum

文献类型： 外文期刊

作者： Zhang, Nannan 1 ; Lin, Huanzhang 1 ; Zeng, Qiaoying 1 ; Fu, Danwen 1 ; Gao, Xiaoning 1 ; Wu, Jiayun 1 ; Feng, Xiaomin 3 ; Wang, Qinnan 1 ; Ling, Qiuping 1 ; Wu, Zilin 1 ;

作者机构： 1.Guangdong Acad Sci, Inst Nanfan & Seed Ind, Guangdong Sugarcane Genet Improvement Engn Ctr, Guangzhou 510316, Peoples R China

2.Zhongkai Univ Agr & Engn, Guangzhou 510225, Peoples R China

3.Guangdong Acad Agr Sci, Rice Res Inst, Guangzhou 510640, Peoples R China

关键词： CNGC; Saccharum spontaneum; Development; Circadian rhythm; Low-K+ stress

期刊名称：BMC GENOMICS （ 2022影响因子：4.4； 五年影响因子：4.7 ）

ISSN： 1471-2164

年卷期： 2023 年 24 卷 1 期

页码：

收录情况： SCI

摘要： BackgroundCyclic nucleotide-gated ion channels (CNGCs) are nonselective cation channels that are ubiquitous in eukaryotic organisms. As Ca2+ channels, some CNGCs have also proven to be K+-permeable and involved in plant development and responses to environmental stimuli. Sugarcane is an important sugar and energy crop worldwide. However, reports on CNGC genes in sugarcane are limited.ResultsIn this study, 16 CNGC genes and their alleles were identified from Saccharum spontaneum and classified into 5 groups based on phylogenetic analysis. Investigation of gene duplication and syntenic relationships between S. spontaneum and both rice and Arabidopsis demonstrated that the CNGC gene family in S. spontaneum expanded primarily by segmental duplication events. Many SsCNGCs showed variable expression during growth and development as well as in tissues, suggesting functional divergence. Light-responsive cis-acting elements were discovered in the promoters of all the identified SsCNGCs, and the expression of most of the SsCNGCs showed a diurnal rhythm. In sugarcane, the expression of some SsCNGCs was regulated by low-K+ treatment. Notably, SsCNGC13 may be involved in both sugarcane development and its response to environmental stimuli, including response to low-K+ stress.ConclusionThis study identified the CNGC genes in S. spontaneum and provided insights into the transcriptional regulation of these SsCNGCs during development, circadian rhythm and under low-K+ stress. These findings lay a theoretical foundation for future investigations of the CNGC gene family in sugarcane.

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