Introduction

The 16S/18S/ITS rDNA sequence contains variable region and conserved region. The sequence of 16S rDNA variable region varies with bacteria, and the degree of variation is closely related to the phylogeny of bacteria. By extracting DNA from environmental samples, amplifying and detecting one or more regions, we can understand the classification and abundance of bacteria in environmental samples.

1 Content of bioinformatics analysis?

1.1 Sequencing quality analysis, statistics and evaluation?

1.2 OTU list generation and annotation (default similarity 0.97)?

1.3 Dilution curve and alpha diversity analysis (default similarity 0.97)?

1.4 Analysis of species abundance difference?

1.5 Cluster heat map?

1.6 Species distribution of single sample and diversity?

1.7 OTU comparison Venn diagram?

1.8 Species distribution with evolutionary relationship??

1.9 Beta diversity analysis

2 Sample requirements?

2.1 Total DNA > 200ng

2.2 Concentration > 20 ng/μL

2.3 260/280 at 1.8~2.0