大麦NF-YC基因鉴定及在盐胁迫下的表达分析
收稿日期: 2022-07-31
录用日期: 2022-10-24
网络出版日期: 2022-11-11
基金资助
国家重点研发计划(2018YFD1000704);国家重点研发计划(2018YFD1000700);国家自然科学基金(32101652)
Identification of the NF-YC Genes in Hordeum vulgare and Expression Analysis Under Salt Stress
Received date: 2022-07-31
Accepted date: 2022-10-24
Online published: 2022-11-11
核因子Y (NF-Y)是由NF-YA、NF-YB和NF-YC三个亚基组成的一类真核细胞转录因子, 主要参与植物生长发育调控和非生物胁迫信号传递。该研究利用生物信息学方法解析了大麦(Hordeum vulgare) NF-YC基因家族功能。首先, 基于大麦基因组数据库鉴定出11个HvNF-YC成员, 分布在除第2号染色体以外的其余6条染色体上, 内含子0-5个。系统进化分析显示, 大麦、拟南芥(Arabidopsis thaliana)和水稻(Oryza sativa) NF-YC基因家族成员可分为5个亚家族。基因复制分析显示, 6个HvNF-YC基因存在片段复制, 3个HvNF-YC基因存在串联复制。启动子顺式作用元件分析显示, 大多数HvNF-YC基因启动子含有与非生物胁迫及激素响应相关的顺式作用元件。对HvNF-YC家族成员在不同组织不同时期的表达模式分析表明, 不同成员的时空表达存在明显差异, 其中HvNF-YC9和HvNF-YC11可能在籽粒发育初期发挥重要作用。通过分析耐盐型和盐敏感型大麦品种根和叶中HvNF-YC表达量变化, 发现HvNF-YC3、HvNF-YC6和HvNF-YC10主要在盐胁迫初期的根中行使功能, HvNF-YC9主要在长期盐胁迫处理后期的根中起作用。综上所述, 推测HvNF-YC9、10、11三个基因可作为后续探究大麦NF-YC参与耐盐作用机制的候选基因。该研究结果为进一步解析HvNF-YC在大麦中的耐盐调控功能奠定了基础。
王菲菲, 周振祥, 洪益, 谷洋洋, 吕超, 郭宝健, 朱娟, 许如根 . 大麦NF-YC基因鉴定及在盐胁迫下的表达分析[J]. 植物学报, 2023 , 58(1) : 140 -149 . DOI: 10.11983/CBB22177
Nuclear factor-Y (NF-Y) is a ubiquitous transcription factor in eukaryotes, which consists of three subunits, NF-YA, NF-YB and NF-YC. NF-Y is widely involved in the regulation of plant growth and development and responses to abiotic stress. In this study, we comprehensively analyzed the NF-YC gene family in barley using bioinformatics methods. First, 11 HvNF-YC members were identified based on the barley genome database, and they are distributed on 6 chromosomes of barley except the second chromosome with 0-5 introns. Phylogenetic analysis showed that the NF-YC family members of barley, Arabidopsis and rice could be divided into five groups. Gene replication analysis showed that six HvNF-YC genes had fragment duplication, and three HvNF-YC genes had tandem duplication. Analysis of cis-acting elements in promoter revealed that most HvNF-YC contained cis-acting elements related to abiotic stress and hormone responses. Analysis of the expression patterns of HvNF-YC members in different tissues at different stages showed that there were significant differences in the spatial and temporal expression of different members, among which HvNF-YC9 and 11 may play important roles in the early stage of grain development. By analyzing the changes of HvNF-YC expression in roots and leaves in salt-tolerant and salt-sensitive barley varieties, and HvNF-YC3, HvNF-YC6 and HvNF-YC10 genes were pivotal in the early stage of salt stress response; while HvNF-YC9 gene played essential roles in the late stage of long-term salt treatment. Therefore, we speculated that HvNF-YC9, 10, and 11 genes could be used as candidates to further explore the mechanism of NF-YC functions in salt tolerance, which will lay the foundation for further analysis of the function of HvNF-YC in barley salt tolerance.
Key words： NF-YC; gene family analysis; barley; salt stress; gene expression
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