生物技术通报 ›› 2023, Vol. 39 ›› Issue (10): 268-280.doi: 10.13560/j.cnki.biotech.bull.1985.2023-0178

• 研究报告 • 上一篇    下一篇

链霉菌Streptomyces sp. FXP04全基因组测序分析

唐碧瑶(), 付学鹏()   

  1. 齐齐哈尔大学生命科学与农林学院,齐齐哈尔 161006
  • 收稿日期:2023-03-02 出版日期:2023-10-26 发布日期:2023-11-28
  • 通讯作者: 付学鹏,男,博士,研究方向:微生物资源开发与利用;E-mail: 02383@qqhru.edu.cn
  • 作者简介:唐碧瑶,女,硕士研究生,研究方向:微生物资源开发与利用;E-mail: 3191769749@qq.com
  • 基金资助:
    黑龙江省自然科学基金项目(LH2021C098);黑龙江省属本科高校基本科研业务费(135509317);齐齐哈尔大学研究生创新科研项目(YJSCX2022018)

Sequencing Analysis of the Whole Genome of Streptomyces sp. FXP04

TANG Bi-yao FU Xue-peng()   

  1. School of Life Sciences, Agriculture and Forestry, Qiqihar University, Qiqihar 161006
  • Received:2023-03-02 Published:2023-10-26 Online:2023-11-28

摘要:

链霉菌Streptomyces sp. FXP04是健康马铃薯根际土壤中分离的一株对致病疫霉(Phytophthora infestans)有显著拮抗作用的革兰氏阳性放线菌。解析菌株FXP04的全部基因组序列信息,深入探索该菌株拮抗作用机制,并挖掘其次级代谢产物基因资源。利用Illumina和PacBio平台相结合测序技术对FXP04进行全基因组测序,并进行了基因预测、功能注释、比较基因组学分析以及次级代谢产物合成基因簇预测。FXP04基因组大小为4 535 201 bp,共编码5 037个基因,GC含量为72.95%,其中含有3个5S rRNA、3个16S rRNA、3个23S rRNA,33个tRNA以及23个sRNA;含有1 699个串联重复序列,含1 284个小卫星 DNA,188个微卫星 DNA;在 GO、COG、KEGG、CAZy、VFDB和ARDB数据库分别注释到2 088、2 319、1 530、73、139和14个基因;同时预测到菌株FXP04中有10个次级代谢产物合成基因簇,分别编码杀粉蝶菌素、Youssoufene等抑菌物质。通过基因组测序初步揭示了菌株FXP04的内在作用机制,对后续开发利用菌株FXP04提供理论依据。

关键词: 链霉菌, 基因组, 基因注释

Abstract:

Streptomyces sp. FXP04 is a gram-positive actinomycete isolated from the rhizosphere soil of healthy potato in Keshan county, Qiqihar, which has obvious antagonistic effect against Phytophthora infestans. This work aims to analyze the whole genome sequence information of strain FXP04, to explore the mechanism of action as well as the gene resources for the biosynthesis of secondary metabolites. The whole genome of Streptomycessp. FXP04 was sequenced by Illumina and PacBio platform, and gene prediction, functional annotation, comparative genomics analysis and synthesis gene cluster prediction of secondary metabolite were carried out. The genomic size of strain FXP04 was 4 535 201bp, encoding a total of 5 037 genes, with a GC content of 72.95%, including three 5S rRNA, three 16S rRNA, three 23S rRNA, 33 tRNA and 23 sRNA. It contained 1 699 tandem repeats,1 284 microsatellite DNA,188 microsatellite DNA. It was annotated to 2 088, 2 319, 1 530, 73, 139 and 14 genes in GO, COG, KEGG, CAZy, VFDB and ARDB databases, respectively. At the same time, it was predicted that there were 10 secondary metabolite synthesis gene clusters in strain FXP04, which encoded bacteriostatic substances such as piericidin, youssoufene and so on. The internal mechanism of strain FXP04 was analyzed by genome sequencing, which provides further theoretical basis for the development and utilization of strain FXP04.

Key words: Streptomyces, genome, gene annotation