生物技术通报 ›› 2025, Vol. 41 ›› Issue (2): 150-162.doi: 10.13560/j.cnki.biotech.bull.1985.2024-0689

• 研究报告 • 上一篇    

糜子PmDEP1PmEP3基因的克隆与表达特征分析

许圆梦1,2,3(), 毛娇1,2,3, 王梦瑶1,2,3, 王数1,2,3, 任江陵1,2,3, 刘宇涵1,2,3, 刘思辰1,2,3, 乔治军1,2,3, 王瑞云1(), 曹晓宁1,2,3()   

  1. 1.山西农业大学农学院,太谷 030801
    2.山西农业大学农业基因资源研究中心,太原 030031
    3.农业农村部黄土高原作物基因资源与种质创制重点实验室,太原 030031
  • 收稿日期:2024-07-18 出版日期:2025-02-26 发布日期:2025-02-28
  • 通讯作者: 王瑞云,女,博士,教授,研究方向 :糜子分子育种;E-mail: wry925@126.com
    曹晓宁,男,博士,研究员,研究方向 :谷子糜子种质资源创新利用及耐逆生理机制;E-mail: caoxiaoning2008@163.com
  • 作者简介:许圆梦,女,硕士研究生,研究方向 :糜子分子育种;E-mail: xuyuanmeng1229@163.com
  • 基金资助:
    山西省重点研发项目(2022ZDYF110);中央引导地方科技发展资金(YDZJSX2022A044);谷子高粱产业技术体系谷子糜子生理岗位(CARS-06-14.5-A16);山西省现代农业杂粮产业技术体系(2024CYJSTX03-23)

Cloning and Expression Characteristics Analysis of Millet Genes PmDEP1 and PmEP3

XU Yuan-meng1,2,3(), MAO Jiao1,2,3, WANG Meng-yao1,2,3, WANG Shu1,2,3, REN Jiang-ling1,2,3, LIU Yu-han1,2,3, LIU Si-chen1,2,3, QIAO Zhi-jun1,2,3, WANG Rui-yun1(), CAO Xiao-ning1,2,3()   

  1. 1.College of Agriculture, Shanxi Agricultural University, Taigu 030801
    2.Center for Agricultural Genetic Resources Research, Shanxi Agricultural University, Taiyuan 030031
    3.Key Laboratory of Crop Genetic Resources and Germplasm Development in Loess Plateau, Ministry of Agriculture and Rural Affairs, Taiyuan 030031
  • Received:2024-07-18 Published:2025-02-26 Online:2025-02-28

摘要:

目的 穗型是影响作物产量和机械化收割的重要因素,DEP1Dense Erect Panicles 1)和EP3Erect Panicle 3)基因是控制穗型形成的关键基因。旨在探究糜子(Panicum miliaceum L.)PmDEP1PmEP3基因的结构与表达特征。 方法 以散穗型糜子笤帚糜子(ZM)、密穗型糜子M278和侧穗型糜子M350为材料,克隆获得PmDEP1PmEP3,并对其开展生物信息学分析。采用RT-qPCR检测不同穗型糜子PmDEP1PmEP3的表达模式。 结果 序列结果分析显示,PmDEP1 cDNA全长为1 044 bp,编码347个氨基酸,蛋白结构域预测为PAT1,二级结构以无规则卷曲为主,三级结构与水稻DEP1蛋白高度相似,预测定位于细胞核,与柳枝稷具有较高的同源性,拥有28个磷酸化位点,不具有跨膜结构和信号肽。PmEP3 cDNA全长1 215 bp,编码358个氨基酸,编码的蛋白属于F-box家族,二级结构以无规则卷曲和延伸链为主,三级结构与水稻Os02g0260200蛋白高度相似,预测定位于细胞质,与柳枝稷具有较高的同源性,不含信号肽,拥有32个磷酸化位点,具有少量的跨膜结构。RT-PCR结果显示,PmDEP1PmEP3在不同时期的不同部位中表达,PmDEP1在拔节期的根中表达量最高,在抽穗期的笤帚糜子和M278中的叶部表达量最高,在M350中的茎部表达量最高。PmEP3在拔节期的叶中表达量最高,在笤帚糜子和M278抽穗期的叶部表达量最高,在M350的穗部表达量最高。 结论 PmDEP1PmEP3为穗型基因,可能参与调控糜子穗型形成。

关键词: 糜子, 穗型基因, PmDEP1, PmEP3, 基因克隆, 表达分析

Abstract:

Objective Panicle type is an important factor affecting crop yield and mechanized harvesting. DEP1 (Dense Erect Panicles 1) and EP3 (Erect Panicles 3) genes are key ones controlling spike type formation. This study aims to explore the structure and expression characteristics of PmDEP1 and PmEP3 ones in proso millet (Panicum miliaceum L.). Method PmDEP1 and PmEP3 genes were cloned and subjected to bioinformatics analysis using the scattered ear type millet varieties, broomstick millet (ZM), dense ear type millet M278, and lateral ear type millet M350 as materials. RT-qPCR was used to detect the expression patterns of PmDEP1 and PmEP3 genes in different ear types of proso millet. Result Sequence result analysis shows that, the full-length cDNA of PmDEP1 is 1 044 bp, encoding 347 amino acids. The protein domain is predicted to be PAT1. The secondary structure is dominated by random coils. The tertiary structure is highly similar with that of rice DEP1 protein. It is predicted to be located in the nucleus and has high homology with switchgrass. It has 28 phosphorylation sites and does not have transmembrane structure and signal peptide. The full-length cDNA of PmEP3 is 1 215 bp, encoding 358 amino acids. The encoded protein belongs to the F-box family. The secondary structure is dominated by random coils and extended chains. The tertiary structure is highly similar with that of rice Os02g0260200 protein. It is predicted to be located in the cytoplasm. It has high homology with switchgrass, does not contain signal peptides, has 32 phosphorylation sites, and has a small amount of transmembrane structure. The RT-PCR results shows that PmDEP1 and PmEP3 genes are expressed in different parts of the plant at different stages. PmDEP1 gene is mainly expressed in the roots at the jointing stage, with the highest expression in the leaves of broomstick millet and M278 at the heading stage, and in the stems of M350. The expressions of PmEP3 gene is the highest in the leaves at the jointing stage, in the leaves of broomstick millet and M278 at the heading stage, and in the ears of M350. Conclusion PmDEP1 and PmEP3 genes are spike type genes that may be involved in regulating the formation of proso millet spike types.

Key words: Panicum miliaceum L., spike type gene, PmDEP1, PmEP3, gene cloning, expression analysis