Erwinia chrysanthemi O antigen is required for betaine osmoprotection in high-salt media.
Cellular components necessary for osmoprotection are poorly known. In this study we show that O antigen is specifically required for the effectiveness of betaines as osmoprotectants for Erwinia chrysanthemi in saline media. The phenotype is correlated with the inability of rfb mutant strains to maintain a high accumulation level of betaines in hypersaline media.
Osmorégulation chez les bactéries, CNRS UMR 6026, Campus de Beaulieu, Université de Rennes I, 35042 Rennes, France.
Thierry
T
Touzé
Renan
R
Goude
Sylvie
S
Georgeault
Carlos
C
Blanco
Sylvie
S
Bonnassie
D001426:Bacterial Proteins / Q000235:genetics / Q000502:physiology; D001622:Betaine / Q000378:metabolism*; D003470:Culture Media / Q000737:chemistry; D004251:DNA Transposable Elements; D016974:Dickeya chrysanthemi / Q000737:chemistry* / Q000254:growth & development / Q000502:physiology*; D005798:Genes, Bacterial; D005810:Multigene Family; D016254:Mutagenesis, Insertional; D009154:Mutation; D019081:O Antigens / Q000502:physiology*; D009994:Osmolar Concentration; D012462:Saline Solution, Hypertonic
D001426:Bacterial Proteins; D003470:Culture Media; D004251:DNA Transposable Elements; D019081:O Antigens; D012462:Saline Solution, Hypertonic; C079397:rfb protein, Bacteria; D001622:Betaine