Publication Date:
2001-07-28
Description:
The scarcity of usable nitrogen frequently limits plant growth. A tight metabolic association with rhizobial bacteria allows legumes to obtain nitrogen compounds by bacterial reduction of dinitrogen (N2) to ammonium (NH4+). We present here the annotated DNA sequence of the alpha-proteobacterium Sinorhizobium meliloti, the symbiont of alfalfa. The tripartite 6.7-megabase (Mb) genome comprises a 3.65-Mb chromosome, and 1.35-Mb pSymA and 1.68-Mb pSymB megaplasmids. Genome sequence analysis indicates that all three elements contribute, in varying degrees, to symbiosis and reveals how this genome may have emerged during evolution. The genome sequence will be useful in understanding the dynamics of interkingdom associations and of life in soil environments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Galibert, F -- Finan, T M -- Long, S R -- Puhler, A -- Abola, P -- Ampe, F -- Barloy-Hubler, F -- Barnett, M J -- Becker, A -- Boistard, P -- Bothe, G -- Boutry, M -- Bowser, L -- Buhrmester, J -- Cadieu, E -- Capela, D -- Chain, P -- Cowie, A -- Davis, R W -- Dreano, S -- Federspiel, N A -- Fisher, R F -- Gloux, S -- Godrie, T -- Goffeau, A -- Golding, B -- Gouzy, J -- Gurjal, M -- Hernandez-Lucas, I -- Hong, A -- Huizar, L -- Hyman, R W -- Jones, T -- Kahn, D -- Kahn, M L -- Kalman, S -- Keating, D H -- Kiss, E -- Komp, C -- Lelaure, V -- Masuy, D -- Palm, C -- Peck, M C -- Pohl, T M -- Portetelle, D -- Purnelle, B -- Ramsperger, U -- Surzycki, R -- Thebault, P -- Vandenbol, M -- Vorholter, F J -- Weidner, S -- Wells, D H -- Wong, K -- Yeh, K C -- Batut, J -- GM30962/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Jul 27;293(5530):668-72.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉UMR6061-CNRS, Laboratoire de Genetique et Developpement, Faculte de Medecine, 2 avenue du Pr. Leon Bernard, F-35043 Rennes cedex, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11474104" target="_blank"〉PubMed〈/a〉
Keywords:
Bacterial Adhesion
;
Bacterial Proteins/genetics
;
Carrier Proteins/genetics
;
Chromosomes, Bacterial/genetics
;
Computational Biology
;
DNA Transposable Elements
;
Energy Metabolism/genetics
;
Evolution, Molecular
;
Gene Duplication
;
Genes, Bacterial
;
Genes, Essential
;
Genes, Regulator
;
*Genome, Bacterial
;
Medicago sativa/microbiology
;
Nitrogen/metabolism
;
Nitrogen Fixation/genetics
;
Plasmids
;
Polysaccharides, Bacterial/genetics
;
Replicon
;
Rhizobiaceae/genetics
;
*Sequence Analysis, DNA
;
Sinorhizobium meliloti/*genetics/physiology
;
Symbiosis/*genetics
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
