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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

SILVAngs

SILVAngs logo

Check out our service for Next Generation Amplicon data

SILVA Alignment, Classification and Tree (ACT) Service

SILVA logo

The SILVA ACT service combines alignment, search and classify as well as reconstruction of trees in a single web application.

SILVA ACT is available at: Opens internal link in current windowwww.arb-silva.de/act

SILVA Tree Viewer

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

Example phylogenetic tree in radial format.

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.

UniEuk

UniEuk

SILVA is a member of the Opens external link in new windowUniEuk project, a community-based project to achieve a universal taxonomic framework for Eukaryotes, focused primarily on protists. UniEuk is integrating information from relevant genetic markers and classical morphology-based data, validated by a comprehensive network of taxonomy experts.

Citations

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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. Change of license model for commercial users with SILVA release 138, 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

03.07.2019

SILVAngs now running on the de.NBI Cloud

As partners in the German Network for Bioinformatics Infrastructure (de.NBI) project, we are proud to announce that the SILVAngs service is now running on the de.NBI scientific cloud infrastructure. A 400 CPU cluster has been set up and is providing valuable compute power for your analysis projects.


27.06.2019

The 16th de.NBI Quaterly Newsletter published

Shortly before the summer break, we provide an addendum to the latest de.NBI Quarterly Newsletter, Issue 2/19. It presents new training activities and de.NBI-supported conferences that take place in the next three months.


17.02.2019

The 15th de.NBI Quaterly Newsletter published

Check de.NBIs new quarterly newsletter! This time with articles about the de.NBI office and ELIXIR meeting, BierDEcorded project, Oliver Stegle our new associated partner and many more.


31.01.2019

SILVA Release 138 further delayed

Dear SILVA community, we are very sorry, but the release of SILVA 138 will be delayed until approximately June/July 2019. The main reason is that we had to change several of our "third-party" data providers since the providers we used were not longer up-to-date. This caused the need for refactoring parts of the software pipeline, which took longer then expected. We are working with high pressure on the new release.


User satisfaction survey

de.NBI

SILVA is now part of the German Network for Bioinformatics Infrastructure de.NBI

To evaluate and improve our quality of service we need your feedback. Please help us by participating in this short Opens external link in new windowsurvey.

SILVA SSU / LSU 132 - full release

      SSU Parc SSU Ref SSU Ref NR 99 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     13.12.17 13.12.17 13.12.17 13.12.17 13.12.17
Aligned rRNA sequences     6,073,181 2,090,668 695,171 907,382 198,843

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