生物技术通报 ›› 2014, Vol. 0 ›› Issue (12): 73-77.doi: 10.13560/j.cnki.biotech.bull.1985.2014.12.012

• 技术与方法 • 上一篇    下一篇

应用PCR-DGGE技术研究石莼、网地藻藻际微生物多样性

冯学珍 ,伍善广, 陆苑   

  1. 广西科技大学,柳州 545006
  • 收稿日期:2014-05-21 出版日期:2014-12-08 发布日期:2014-12-12
  • 作者简介:冯学珍,女,硕士,讲师,研究方向:海洋生物活性物质的研究与开发;E-mail:fengxuezhenbest@163.com
  • 基金资助:
    广西壮族自治区教育厅级课题 (2013LX180),广西高等学校特色专业及课程一体化建设项目(药学 GXTSZY286)

Preliminary Application of PCR-DGGE to Analyzing Microbial Diversity of Ulva lactuca L. and Dictyota dichotoma

Feng Xuezhen, Wu Shanguang, Lu Yuan   

  1. (Guangxi University of Science and Technology, Liuzhou 545006)
  • Received:2014-05-21 Published:2014-12-08 Online:2014-12-12

摘要: 应用变性凝胶梯度电泳(PCR-DGGE)技术对石莼、网地藻藻际微生物多样性进行研究,并对其进行相似性、未加 权聚类分析(UPGMA)及微生物多样性(Shannon)指数分析。结果表明,PCR-DGGE 图谱显示,石莼、网地藻藻际微生物 DGGE 图谱有着明显的差异性,具体表现在条带数及密度值的不同。Quantity one 图谱分析表明:石莼藻际微生物 16S rRNA 基因的 V3 区共分离得到25条 DNA片段,网地藻为16条DNA片段。 DGGE 相似性及未加权聚类分析表明:网地藻藻际微生物间的相似性为 77.78%,石莼藻际微生物细菌群落间的相似性为49.25%。Shannon 指数分析表明,石莼藻际微生物多样性指数显著高于网地藻(P<0.05)。石莼藻际微生物细菌群落较网地藻丰富。

关键词: 变形凝胶梯度电泳(PCR-DGGE), 石莼, 网地藻, 藻际微生物, 微生物多样性

Abstract: To study the microbial diversity of Ulva lactuca L. and Dictyota dichotoma. As a new DNA fingerprinting technique, denaturing gradient gel electrophoresis(DGGE)can be used to analyze the microbial diversity in different environmental samples. Ulva lactuca L. and Dictyota dichotoma will be studied with respect to microbial diversity by applying cultivation-independent molecular methods DGGE. The results showed, the profile of DGGE showed that Ulva lactuca L. and Dictyota dichotoma had different bands. The structural diversity of the microbial community was examined by the Shannon index of general diversity H. Quantity one analysis showed that, V3 region of 16S rRNA gene was isolated from 25 DNA fragments of Ulva lactuca L. and 16 of Dictyota dichotoma. DGGE similarity and UPGMA analysis showed that :the similarity of Ulva lactuca L. was higher than the Dictyota dichotoma(P<0.05).. Shannon indexes of two kinds of algae all showed Ulva lactuca L. were significantly higher than the Dictyota dichotoma(P<0.05). The algae microbial diversity of Ulva lactuca L. was richer than Dictyota dichotoma.

Key words: PCR-DGGE Ulva lactuca L., Dictyota dichotoma, Algae microorganisms, Microbial diversity