Article
A mutant GlnD nitrogen sensor protein leads to a nitrogen-fixing but ineffective Sinorhizobium meliloti symbiosis with alfalfa.
Proceedings of the National Academy of Sciences of the United States of America - 2 Dec 2008
Yurgel Svetlana N, Kahn Michael L
Abstract excerpt
The nitrogen-fixing symbiosis between rhizobia and legume plants is a model of coevolved nutritional complementation. The plants reduce atmospheric CO(2) by photosynthesis and provide carbon compounds to symbiotically associated bacteria; the rhizobia use these compounds to reduce (fix) atmospheric N(2) to ammonia, a form of nitrogen the plants can use. A key feature of symbiotic N(2) fixation is that N(2)...
Topics
- Amino Acids
- Bacterial Proteins
- Isoenzymes
- Medicago sativa
- Mutant Proteins
- Nitrogen
- Nitrogen Fixation
- PII Nitrogen Regulatory Proteins
- Phenotype
- Sinorhizobium meliloti
- Symbiosis