SILVA

Welcome to the SILVA rRNA database project

A comprehensive on-line resource for quality checked and aligned ribosomal RNA sequence data.

SILVA provides comprehensive, quality checked and regularly updated datasets of aligned small (16S/18S, SSU) and large subunit (23S/28S, LSU) ribosomal RNA (rRNA) sequences for all three domains of life (Bacteria, Archaea and Eukarya).

SILVA are the official databases of the software package ARB.

For more background information Opens internal link in current windowClick here

SILVA 126 - web release (Ref datasets and ARB files not updated)

  SSU Parc LSU Parc
Release date 04.04.2016   04.04.2016
Aligned rRNA sequences  5,366,469   645,932

SILVAngs

Check out our new service for Next Generation Amplicon data

SILVA Tree Viewer

The SILVA Tree Viewer is a web application to browse and query the SILVA guide trees.

A technical preview is available at Opens external link in new windowwww.arb-silva.de/treeviewer

ARB

The software package ARB represents a graphically-oriented, fully-integrated package of cooperating software tools for handling and analysis of sequence information.

The ARB project has been started more than 15 years ago by Wolfgang Ludwig at the Technical University in Munich, Germany, see Opens external link in new windowwww.arb-home.de.

Citations

Quast C, Pruesse E, Yilmaz P, Gerken J, Schweer T, Yarza P, Peplies J, Glöckner FO (2013) The SILVA ribosomal RNA gene database project: improved data processing and web-based tools. Opens external link in new windowNucl. Acids Res. 41 (D1): D590-D596.

For the taxonomic framework:

Yilmaz P, Parfrey LW, Yarza P, Gerken J, Pruesse E, Quast C, Schweer T, Peplies J, Ludwig W, Glöckner FO (2014) The SILVA and "All-species Living Tree Project (LTP)" taxonomic frameworks. Opens external link in new windowNucl. Acids Res. 42:D643-D648

Opens internal link in current windowFurther references

SILVA Terms of Use/License Information

SILVA follows a dual licensing model. In short, browsing the content of the SILVA webportal (including results of the data analysis services) and deploying this information is free for all users. Any downloads provided are free for ACADEMIC users. Redistribution of these downloads or their derivates requires a reference to the official SILVA license terms. NON-ACADEMIC users need to acquire a SILVA Commercial License for utilisation of any downloads provided. For the full text and how to acquire a commercial license, please refer to the Opens internal link in current windowSILVA Terms of Use/License Information

Partners

Please visit our partners. They facilitate the SILVA  database project.

          

SILVA RSS Feed + ARB & SILVA User Group

News

15.09.2016

SILVA training course: From Primer to Paper

From Primer to Paper: Training in Biodiversity Analysis using NGS Amplicon Data - Application now open. Please follow the link for more information on the course content, registration, and payment.


11.09.2016

Sneak Preview: SILVA release 128

The first statistics for SILVA release 128. The SILVA 128 release can be expected for October 2016.


01.09.2016

SILVA/SILVAngs Job Opening

You are interested to work on an internationally renowned project outside of the classical computer science tasks? We are looking for a Web-developer or Programmer with Ideas, Expertise and Motivation to support the SILVA team.


29.08.2016

First version of the SILVA Tree Viewer online

The brand new SILVA Tree Viewer is a web application to browse and query the SILVA guide trees. A technical preview is now available for testing and feedback.


SILVA SSU / LSU 123 - full release

      SSU Parc SSU Ref SSU Ref NR LSU Parc LSU Ref
Minimal length     300 1200/900 1200/900 300 1900
Quality filtering     basic strong strong basic strong
Guide Tree     no no yes no yes
Release date     23.07.15 23.07.15 23.07.15 23.07.15 23.07.15
Aligned rRNA sequences     4,985,791 1,756,783 597,607 563,332 96,642

Differences between releases SSU 123 and 123.1

SILVA SSU 123.1 is an update of the SSU 123 full release providing corrections to the SILVA SSU taxonomy. The sequence data have not been changed. Updated ARB, FASTA, RAST and taxonomy files are provided in the Opens external link in new windowdownload section. The changes in the taxonomy can be found Opens external link in new windowhere.

The LSU 123 datasets have not been updated, therefore, the LSU 123 files are still provided. 

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