Sinorhizobium meliloti: Difference between revisions
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==Description and significance== | ==Description and significance== | ||
Sinorhizobium meliloti is a gram-negative nitrogen-fixing | |||
Sinorhizobium meliloti is a gram-negative bacterium. As are other Rhizobia, S. meliloti can be found as a normal, free-living microorganisms in the soil. However, it is for their nitrogen-fixing symbiotic relationships with legumes that S. meliloti are studied. S. meliloti cells detect substances particularly made up of amino and organic acids, released by the roots of plants. The cells are drawn toward root hairs that emerge from the roots and induce the root hair tips to curl up. There is a cytoplasmic bridge formed by the microtublues and the cytoplasm of the root cells. This bridge guides infection threads extending from the roots to the cortex of the bacterial cells. Finally, the S. meliloti cells enter the cytoplasm of the root cells through endocytosis. | |||
Describe the appearance, habitat, etc. of the organism, and why it is important enough to have its genome sequenced. Describe how and where it was isolated. | Describe the appearance, habitat, etc. of the organism, and why it is important enough to have its genome sequenced. Describe how and where it was isolated. | ||
Include a picture or two (with sources) if you can find them. | Include a picture or two (with sources) if you can find them. |
Revision as of 04:49, 28 August 2007
A Microbial Biorealm page on the genus Sinorhizobium meliloti
Classification
Higher order taxa
Bacteria; Proteobacteria; Alphaproteobacteria; Rhizobiales; Rhizobiazeae; Sinorhizobium
[Others may be used. Use NCBI link to find]
Species
NCBI: Taxonomy |
Sinorhizobium meliloti;
Description and significance
Sinorhizobium meliloti is a gram-negative bacterium. As are other Rhizobia, S. meliloti can be found as a normal, free-living microorganisms in the soil. However, it is for their nitrogen-fixing symbiotic relationships with legumes that S. meliloti are studied. S. meliloti cells detect substances particularly made up of amino and organic acids, released by the roots of plants. The cells are drawn toward root hairs that emerge from the roots and induce the root hair tips to curl up. There is a cytoplasmic bridge formed by the microtublues and the cytoplasm of the root cells. This bridge guides infection threads extending from the roots to the cortex of the bacterial cells. Finally, the S. meliloti cells enter the cytoplasm of the root cells through endocytosis.
Describe the appearance, habitat, etc. of the organism, and why it is important enough to have its genome sequenced. Describe how and where it was isolated.
Include a picture or two (with sources) if you can find them.
Genome structure
Describe the size and content of the genome. How many chromosomes? Circular or linear? Other interesting features? What is known about its sequence? Does it have any plasmids? Are they important to the organism's lifestyle?
Cell structure and metabolism
Describe any interesting features and/or cell structures; how it gains energy; what important molecules it produces.
Ecology
Describe any interactions with other organisms (included eukaryotes), contributions to the environment, effect on environment, etc.
Pathology
How does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
Application to Biotechnology
Does this organism produce any useful compounds or enzymes? What are they and how are they used?
Current Research
Enter summaries of the most recent research here--at least three required
References
Edited by student of Rachel Larsen