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Sequencing the Sinorhizobium meliloti genome
F Galibert1, F Barloy-Hubler, D Capela
1UPR 41 CNRS Recombinaisons Génétiques, Faculté de Médecine, Rennes, France. galibert@univ-rennes1.fr
DNA Sequence : the Journal of DNA Sequencing and Mapping
|November 25, 2000
Summary
The Sinorhizobium meliloti genome, crucial for nitrogen fixation in legumes, comprises three replicons. This study details the sequencing of its large chromosome, with other elements to be sequenced separately.
Area of Science:
- Microbiology
- Genomics
- Agricultural Science
Background:
- Sinorhizobium meliloti is a key nitrogen-fixing symbiont of legumes.
- Its genome is essential for understanding agricultural productivity.
- The bacterium's genome is composed of three distinct replicons.
Purpose of the Study:
- To sequence the 3.7 Mb chromosome of Sinorhizobium meliloti.
- To lay the groundwork for a complete understanding of the S. meliloti genome.
- To facilitate research on this agriculturally important bacterium.
Main Methods:
- Genome sequencing of the main chromosome.
- Collaborative effort involving 6 European laboratories.
Main Results:
- The 3.7 Mb chromosome of Sinorhizobium meliloti has been sequenced.
- The sequencing of the two other elements (pSyma and pSymb) is pending.
Conclusions:
- The chromosome sequencing is a significant step towards fully characterizing the Sinorhizobium meliloti genome.
- Further sequencing of extrachromosomal elements is required for a complete genomic view.
- This work supports agricultural applications by providing genomic data for a vital nitrogen-fixing bacterium.