›› 2014, Vol. 41 ›› Issue (11): 144-149.

• 生理生化 • 上一篇    下一篇

重组植物乳杆菌生物学特性比较研究

王晶, 季海峰, 王四新, 张董燕, 刘辉, 王雅民   

  1. 北京市农林科学院畜牧兽医研究所, 北京 100097
  • 收稿日期:2014-05-09 出版日期:2014-11-20 发布日期:2014-12-06
  • 通讯作者: 季海峰 E-mail:jhf207@126.com
  • 作者简介:王晶(1976-),女,甘肃人,博士,副研究员,研究方向:动物营养与饲料科学。
  • 基金资助:
    国家自然科学基金(31101721);生猪产业技术体系北京市创新团队建设(GWZJ-2009-06)。

Comparative Study on Biological Characteristics of Recombinant Lactobacillus plantarum

WANG Jing, JI Hai-feng, WANG Si-xin, ZHANG Dong-yan, LIU Hui, WANG Ya-min   

  1. Institute of Animal Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
  • Received:2014-05-09 Online:2014-11-20 Published:2014-12-06

摘要: 试验对植物乳杆菌(Lactobacillus plantarum,Lp)出发菌与携带绿色荧光蛋白(green fluorescent protein,GFP)标记基因的重组植物乳杆菌(Lp-GFP)生物学特性进行了详细的比较研究,以便于深入开展益生菌植物乳杆菌在动物肠道内分布和定植规律的研究。结果显示,Lp和Lp-GFP生长曲线的变化趋势基本相同,其中Lp-GFP的生长速度略有滞后;Lp和Lp-GFP最适培养温度均为37 ℃,最适初始pH均为6.5;Lp和Lp-GFP耐高温、耐人工胃液、耐人工肠液和耐胆盐的特性趋势一致;Lp和Lp-GFP的抑菌特性无显著差异(P>0.05);除了红霉素,Lp和Lp-GFP对其他药物的敏感性基本没有发生变化。综上所述,植物乳杆菌的重组对其生物学特性没有显著的影响,这为重组标记菌株的后续培养和机理研究奠定了重要基础。

关键词: 植物乳杆菌; 绿色荧光蛋白; 重组; 生物学特性

Abstract: In order to further study the distribution and adhesion of Lactobacillus plantarum in animal gastrointestinal tract,biological characteristics of Lactobacillus plantarum (LP) and recombinant Lactobacillus plantarum with GFP marker gene (Lp-GFP) had been systematically compared.The results showed that the growth curve of Lp-GFP was basically the same as Lp and Lp-GFP growth speed slightly lagging behind.The optimum growth temperature of Lp and Lp-GFP were all 37 ℃ and the optimum initial pH were all 6.5.The high temperature resistance,tolerance to artificial gastric fluid and artificial intestinal fluid,tolerance to bile salt of Lp and Lp-GFP had the same tendency.There was no significant difference on anti-bacteria character of Lp and Lp-GFP (P>0.05).The sensitivity to drugs of Lp and Lp-GFP had no differences except erythromycin.In conclusion,recombination has no significant effect on biological characteristics of Lactobacillus plantarum.These results laid an important foundation for cultivation and mechanism study of reconstructed Lactobacillus plantarum.

Key words: Lactobacillus plantarum; green fluorescence protein; recombination; biological characteristics

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