| Title |
Salt-tolerant rhizobia isolated from a Tunisian oasis that are highly effective for symbiotic N2-fixation with Phaseolus vulgaris constitute a novel biovar (bv. mediterranense) of Sinorhizobiummeliloti
|
|---|---|
| Published in |
Archives of Microbiology, September 2006
|
| DOI | 10.1007/s00203-006-0173-x |
| Pubmed ID | |
| Authors |
Bacem Mnasri, Moncef Mrabet, Gisèle Laguerre, Mohamed Elarbi Aouani, Ridha Mhamdi |
| Abstract |
Nodulation of common bean was explored in six oases in the south of Tunisia. Nineteen isolates were characterized by PCR-RFLP of 16S rDNA. Three species of rhizobia were identified, Rhizobium etli, Rhizobium gallicum and Sinorhizobium meliloti. The diversity of the symbiotic genes was then assessed by PCR-RFLP of nodC and nifH genes. The majority of the symbiotic genotypes were conserved between oases and other soils of the north of the country. Sinorhizobia isolated from bean were then compared with isolates from Medicago truncatula plants grown in the oases soils. All the nodC types except for nodC type p that was specific to common bean isolates were shared by both hosts. The four isolates with nodC type p induced N(2)-fixing effective nodules on common bean but did not nodulate M. truncatula and Medicago sativa. The phylogenetic analysis of nifH and nodC genes showed that these isolates carry symbiotic genes different from those previously characterized among Medicago and bean symbionts, but closely related to those of S. fredii Spanish and Tunisian isolates effective in symbiosis with common bean but unable to nodulate soybean. The creation of a novel biovar shared by S. meliloti and S. fredii, bv. mediterranense, was proposed. |
Mendeley readers
The data shown below were compiled from readership statistics for 50 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| France | 1 | 2% |
| Morocco | 1 | 2% |
| Unknown | 48 | 96% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 10 | 20% |
| Student > Ph. D. Student | 8 | 16% |
| Student > Master | 6 | 12% |
| Student > Bachelor | 3 | 6% |
| Other | 3 | 6% |
| Other | 10 | 20% |
| Unknown | 10 | 20% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 27 | 54% |
| Biochemistry, Genetics and Molecular Biology | 4 | 8% |
| Immunology and Microbiology | 3 | 6% |
| Environmental Science | 2 | 4% |
| Computer Science | 1 | 2% |
| Other | 3 | 6% |
| Unknown | 10 | 20% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 23 January 2013.
All research outputs
#8,759,452
of 25,837,817 outputs
Outputs from Archives of Microbiology
#664
of 3,169 outputs
Outputs of similar age
#31,322
of 89,616 outputs
Outputs of similar age from Archives of Microbiology
#2
of 11 outputs
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