Acacia senegal and Prosopis chilensis-nodulating rhizobia Sinorhizobium arboris HAMBI 2361 and S. kostiense HAMBI 2362 produce tetra- and pentameric LCOs that are N-methylated, O-6-carbamoylated and partially sulfated
| Autor: | Jane Thomas-Oates, Kristina Lindström, Petri Nowak, Laura Soupas |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
0106 biological sciences
Spectrometry Mass Electrospray Ionization Genetic Linkage ved/biology.organism_classification_rank.species Acacia Oligosaccharides Sinorhizobium 01 natural sciences Biochemistry Methylation Mass Spectrometry Analytical Chemistry Rhizobia 03 medical and health sciences Sulfation Prosopis Symbiosis Botany Sinorhizobium arboris 030304 developmental biology Ions 0303 health sciences biology ved/biology Chemistry Organic Chemistry Monosaccharides food and beverages Prosopis chilensis General Medicine biochemical phenomena metabolism and nutrition biology.organism_classification Carbohydrate Sequence Models Chemical Tetra Rhizobium Sulfur 010606 plant biology & botany Chromatography Liquid Plasmids |
| Zdroj: | Carbohydrate research. 339(6) |
| ISSN: | 0008-6215 |
| Popis: | Sinorhizobium arboris and S. kostiense are rhizobia that nodulate the tropical leguminous trees Acacia senegal and Prosopis chilensis . The lipochito-oligosaccharidic signalling molecules (LCOs) of S. arboris HAMBI 2361 and S. kostiense HAMBI 2362 were analyzed by mass spectrometry. The major LCOs produced by the strains were shown to be pentameric, acylated with common fatty acids, N-methylated, O-6-carbamoylated and partially sulfated, as are the LCOs characterized to date for other Acacia -nodulating rhizobia. Besides the major LCOs the two strains produced (i) tetrameric LCOs, (ii) LCOs acylated with fatty acids other than those commonly found, (iii) LCOs with only an acyl substituent and (iv) noncarbamoylated LCOs. Production of LCOs (i) to (iii) are novel among Acacia -nodulating rhizobia. The roles of the different structural characteristics of LCOs in the rhizobium– A. senegal symbiosis are discussed. Specific structural features of the LCOs are proposed to be important in the selection of effective nitrogen-fixing rhizobia by A. senegal . |
| Databáze: | OpenAIRE |
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