Carbohydrates as carbon sources in rhizobia under salt stress
El Idrissi, MM; Abdelmoumen, H
| HERO ID | 2587722 |
|---|---|
| In Press | No |
| Year | 2008 |
| Title | Carbohydrates as carbon sources in rhizobia under salt stress |
| Authors | El Idrissi, MM; Abdelmoumen, H |
| Journal | Symbiosis |
| Volume | 46 |
| Issue | 1 |
| Page Numbers | 33-44 |
| Abstract | Eight strains of rhizobia isolated from Mediterranean legumes were tested for their ability to use various carbohydrates in the presence of different NaCl concentrations. This study used API 50CH galleries which permitted rapid screening of the effect of salt on the utilization of 49 different carbohydrates. In absence of salt, the strains used a large variety of carbohydrates as energy and carbon sources. Salt tolerant strains nodulating Trigonella foenum-graecum, Cytisus arboreus and Adenocarpus decorticans, grew on a wide range of carbohydrates in hyper-osmotic media containing 500 mu M or 1 M NaCl. Esculin was the preferred carbon source in highly salt stressed media. In milder saline conditions, 175 or 350 PM NaCl, two salt-stress sensitive strains, isolated from Genista erioclada used xylose, ribose, mannose, gluconic acid, galactose, sorbitol, fructose, and the disaccharides, maltose, sucrose, cellobiose and trehalose, but could not grow on mannitol. An unexpected result was that some carbon sources are utilized in presence of salt but not in its absence. The uptake of these carbohydrates is probably activated by salt stress. |
| Wosid | WOS:000255965300004 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | carbohydrates; salt stress; rhizobia; Mediterranean legumes; osmoprotection; salt stress |