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中国生物防治学报 ›› 2018, Vol. 34 ›› Issue (3): 377-387.DOI: 10.16409/j.cnki.2095-039x.2018.03.009

• 研究论文 • 上一篇    下一篇

蛋白组学分析多聚磷酸盐在球形芽胞杆菌适应营养恢复过程中的作用

石廷玉1,3, 王园媛2, 向宇波1, 董兴高1, 袁志明3   

  1. 1. 湖北民族学院, 恩施 445000;
    2. 湖北民族学院附属民大医院, 恩施 445000;
    3. 中国科学院武汉病毒研究所, 武汉 430071
  • 收稿日期:2017-07-21 出版日期:2018-06-08 发布日期:2018-06-14
  • 通讯作者: 袁志明,博士,研究员,E-mail:yzm@wh.iov.cn
  • 作者简介:石廷玉,博士,讲师,E-mail:shitingyu198@126.com
  • 基金资助:
    湖北民族学院博士科研启动金(MY2015B024);湖北省教育厅科学技术研究计划青年人才项目(Q20171902);国家自然科学基金(31600073);湖北省大学生创新创业训练计划(201710517024);湖北民族学院大学生创新创业训练计划项目(201810517019);湖北省自然科学基金青年项目(2018CFB384)

Proteomics Analysis for the Role of Polyphosphate in Lysinibacillus sphaericus Adaptation to Nutrition Recovery

SHI Tingyu1,3, WANG Yuanyuan2, XIANG Yubo1, DONG Xinggao1, Yuan Zhiming3   

  1. 1. Medical College of Hubei Institute for Nationalities, Enshi 445000, China;
    2. Affiliated Hospital of Hubei Institute for Nationalities, Enshi 445000, China;
    3. Key Laboratory of Agricultural and Environmental Microbiology/Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2017-07-21 Online:2018-06-08 Published:2018-06-14

摘要: 本文通过敲除球形芽胞杆菌多聚磷酸盐合成酶基因,研究野生菌和突变菌在氨基酸缺乏以及营养恢复后细菌的生长情况。结果发现,球形芽胞杆菌野生菌在氨基酸缺乏的条件下会导致polyP聚集,而突变菌不能。在氨基酸缺乏的条件下,野生菌比突变菌生长的更好,在营养恢复后,野生菌比突变菌能更迅速地恢复生长。通过蛋白组学和生物信息学分析发现,RNA降解体组分PNP和RNase J蛋白在突变菌中上调。由于mRNA稳定性的调节是细菌适应营养环境的一种重要策略,因此,我们推测球形芽胞杆菌通过polyP的聚集,来调节mRNA稳定性,以快速适应营养缺乏和恢复后的环境。

关键词: 球形芽胞杆菌, 多聚磷酸盐, 氨基酸缺乏, 环境胁迫

Abstract: Though knocking out the gene ppk of polyphosphate kinase, the growth of Lysinibacillus sphaericus wild strains and ppk mutants in conditions of amino acids deficiency and nutrition recovery was investigated. In amino acid deficiency, L. sphaericus wild strains accumulated polyP, but L. sphaericus ppk mutants did not. The wild strains grew better than ppk mutants in amino acid deficiency medium and, the wild strains regained growth more quickly than ppk mutants in medium with nutrition recovery. Proteomics and bioinformatics analysis revealed that levels of PNP and RNase J protein, the components of RNA degradosome, were up-regulated in L. sphaericus ppk mutants. The regulation of mRNA stability was an important strategy for bacteria to adapt to nutrition deficiency, we suspect that L. sphaericus accumulates polyP to regulate mRNA stability and to adapt to nutritional deficiency and recovery environment.

Key words: Lysinibacillus sphaericus, polyphosphate, amino acids deficiency, environment stresses

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