生物技术进展 ›› 2023, Vol. 13 ›› Issue (5): 730-741.DOI: 10.19586/j.2095-2341.2023.0106

• 研究论文 • 上一篇    下一篇

利用重测序技术开发高粱InDel分子标记

蒲伟军1(), 谭冰兰1, 贺丹晨1,2, 张盼1, 李玉斌1,3, 朱莉1()   

  1. 1.中国农业科学院生物技术研究所,北京 100081
    2.南京师范大学食品与制药工程学院,南京 210023
    3.青岛农业大学农学院,山东 青岛 266109
  • 收稿日期:2023-08-11 接受日期:2023-09-01 出版日期:2023-09-25 发布日期:2023-10-10
  • 通讯作者: 朱莉
  • 作者简介:蒲伟军 E-mail: pwj0613@163.com
  • 基金资助:
    国家自然科学基金项目(32272054);国家重点研发计划项目(2018YFD1000702)

Development of InDel Molecular Markers in Sorghum Using Re-sequencing Technology

Weijun PU1(), Binglan TAN1, Danchen HE1,2, Pan ZHANG1, Yubin LI1,3, Li ZHU1()   

  1. 1.Institute of Biotechnology,Chinese Academy of Agricultural Sciences,Beijing 100081,China
    2.School of Food Science and Pharmaceutial Engineering,Nanjing Normal University,Nanjing 210023,China
    3.College of Agronomy,Qingdao Agricultural University,Shandong Qingdao 266109,China
  • Received:2023-08-11 Accepted:2023-09-01 Online:2023-09-25 Published:2023-10-10
  • Contact: Li ZHU

摘要:

高粱是重要的禾谷类作物,其测序品种BTx623的全基因组序列已经公布,为高粱InDel 标记的开发提供了研究基础。插入与缺失(insertion/deletion,InDel)标记作为高通量分子标记,在植物基因组中具有遗传稳定性高、分布广、多态性强、通用性强等优点,目前已在水稻、玉米、棉花等主要作物中得到广泛应用,然而在高粱中的研究尚不多见。以高粱品种JIUTIAN1基因组DNA为研究对象,利用Illumina平台进行重测序,进一步利用Trimmomatic软件对测序原始数据进行质量控制,剔除低质量数据,使用BWA软件将获得的高质量有效数据与测序品种BTx623参考基因组进行序列比对,从中检测出大量InDel位点。利用这些InDel位点在全基因组范围内设计均匀分布的205个标记,通过PCR验证后筛选出87个多态性标记,多态性为42.44%。高粱Indel标记的开发有望为高粱遗传连锁图谱的构建、遗传多样性分析、杂交种纯度鉴定、高粱重要农艺性状相关基因的定位和分子标记辅助选择育种等研究奠定基础。

关键词: 高粱, InDel, 重测序, 多态性引物, 分子标记

Abstract:

Sorghum (Sorghum bicolor L. Moench) is one of the most important cereal, and the complete genome of sorghum sequencing variety BTx623 has been published, which provides a research basis for the development of InDel(insertion/deletion) markers in sorghum. InDel markers, as high-throughput molecular markers, have the advantages of high genetic stability, wide distribution, strong polymorphism, and strong universality in plant genomes. At present, it has been widely used in rice, corn, cotton and other major crops. However, there are few studies in sorghum. In this study, the genomic DNA of sweet sorghum variety JIUTIAN1 was selected as the research object, re-sequencing was performed using Illumina platform, and quality control was performed on raw data of sequencing using Trimmomatic software, and low-quality data were eliminated. BWA software was used to compare the obtained high-quality clean data with the reference genome of the sequenced variety BTx623, from which a large number of InDel sites were detected. These InDel sites were used to design 205 evenly distributed markers in the whole genome, and 87 polymorphic markers were selected by PCR verification, with a polymorphism of 42.44%. These 87 InDel markers were characterized with high polymorphism, wide distribution and high stability. The sorghum InDel marker developed in this study was expected to lay a foundation for the construction of sorghum genetic linkage map, genetic diversity analysis, hybrid purity identification, location of genes related to important agronomic traits of sorghum, and marker-assisted selection breeding.

Key words: Sorghum bicolor, InDel, re-sequencing, polymorphic primer, molecular marker

中图分类号: