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 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.

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

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

15.01.2018

SILVAngs updated

SILVAngs has been updated to version 1.7. Improvements: fixed custom fingerprints, fixed layout problems, front page redesigned, added SILVA Twitter feed to front page, new project dashboard, several bugfixes and improvements. The SILVA Team


21.12.2017

Merry Christmas and a Happy New Year

The SILVA Team wishes you a Merry Christmas and a Happy New Year. Many thanks for your constructive feedback and cooperation to help us improving SILVA and SILVAngs. Looking forward to see you again in 2018.


13.12.2017

SILVA 132 released

Finally! SILVA 132 released! Highlights: Improved taxonomy and Seed, updated LTP, SILVA Treeviewer published, ARB & SILVA review published, de.NBI SILVA project extended and much more...


01.12.2017

SILVA release 132 delayed

We are very sorry, but due to unexpected technical problems the SILVA release 132 is currently delayed. We are working with high pressure on it. Hope to get it out beginning of December. Thanks for your patience and sorry for the inconveniences. The SILVA Team.


User satisfaction survey

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

SILVA on Twitter!