Retama species growing in different ecological–climatic areas of northeastern Algeria have a narrow range of rhizobia that form a novel phylogenetic clade within the Bradyrhizobium genus

Boulila, Farida; Géraldine, Depret; Boulila, Abdelghani; Belhadi, D.; Benallaoua, Saı̈d; Gisèle, Laguerre

doi:10.1016/j.syapm.2009.01.005

Cited by 24 publications

(12 citation statements)

References 39 publications

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“…In fact, strains showing phylogenetic affinity to B. elkanii were previously reported in Sicily, among the isolates nodulating Calicotome spinosa and G. aspalathoides [ 34 ]. In addition, B. elkanii -related strains were detected in nodules of Retama raetam and R. sphaerocarpa , in seven distinct ecological-climatic areas of north-eastern Algeria [ 92 ]. In another study, all of the Bradyrhizobium strains isolated in Morocco and Spain from R. sphaerocarpa and Retama monosperma clustered in the B. elkanii supergroup.…”

Section: Genisteae Isolates Related To Bradyrhizobium Elmentioning

confidence: 99%

Phylogeny and Phylogeography of Rhizobial Symbionts Nodulating Legumes of the Tribe Genisteae

Stępkowski

Banasiewicz

Granada

et al. 2018

Genes

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The legume tribe Genisteae comprises 618, predominantly temperate species, showing an amphi-Atlantic distribution that was caused by several long-distance dispersal events. Seven out of the 16 authenticated rhizobial genera can nodulate particular Genisteae species. Bradyrhizobium predominates among rhizobia nodulating Genisteae legumes. Bradyrhizobium strains that infect Genisteae species belong to both the Bradyrhizobium japonicum and Bradyrhizobium elkanii superclades. In symbiotic gene phylogenies, Genisteae bradyrhizobia are scattered among several distinct clades, comprising strains that originate from phylogenetically distant legumes. This indicates that the capacity for nodulation of Genisteae spp. has evolved independently in various symbiotic gene clades, and that it has not been a long-multi-step process. The exception is Bradyrhizobium Clade II, which unlike other clades comprises strains that are specialized in nodulation of Genisteae, but also Loteae spp. Presumably, Clade II represents an example of long-lasting co-evolution of bradyrhizobial symbionts with their legume hosts.

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Section: Genisteae Isolates Related To Bradyrhizobium Elmentioning

confidence: 99%

Phylogeny and Phylogeography of Rhizobial Symbionts Nodulating Legumes of the Tribe Genisteae

Stępkowski

Banasiewicz

Granada

et al. 2018

Genes

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“…Phylogenetic analyses of multi-genes found on chromosomes can clarify bacterial relationships better than the analysis of a single locus (Farida et al 2009;Rivas et al 2009). The phylogenetic analyses based on 16S rRNA gene sequences indicated that the rhizobial strains nodulating chickpea in Ethiopia were distributed under the genus Mesorhizobium.…”

Section: The Chickpea Microsymbionts Represent Four Mesorhizobium Genmentioning

confidence: 99%

Genetic and phenotypic diversity of rhizobia nodulating chickpea (Cicer arietinumL.) in soils from southern and central Ethiopia

Tena

Wolde-meskel²,

Degefu

et al. 2017

Can. J. Microbiol.

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Forty-two chickpea-nodulating rhizobia were isolated from soil samples collected from diverse agro-ecological locations of Ethiopia and were characterized on the basis of 76 phenotypic traits. Furthermore, 18 representative strains were selected and characterized using multilocus sequence analyses of core and symbiotic gene loci. Numerical analysis of the phenotypic characteristics grouped the 42 strains into 4 distinct clusters. The analysis of the 16S rRNA gene of the 18 strains showed that they belong to the Mesorhizobium genus. On the basis of the phylogenetic tree constructed from the combined genes sequences (recA, atpD, glnII, and gyrB), the test strains were distributed into 4 genospecies (designated as genospecies I-IV). Genospecies I, II, and III could be classified with Mesorhizobium ciceri, Mesorhizobium abyssinicae, and Mesorhizobium shonense, respectively, while genospecies IV might represent an unnamed Mesorhizobium genospecies. Phylogenetic reconstruction based on the symbiosis-related (nifH and nodA) genes supported a single cluster together with a previously described symbiont of chickpea (M. ciceri and Mesorhizobium mediterraneum). Overall, our results corroborate earlier findings that Ethiopian soils harbor phylogenetically diverse Mesorhizobium species, justifying further explorative studies. The observed differences in symbiotic effectiveness indicated the potential to select effective strains for use as inoculants and to improve the productivity of chickpea in the country.

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“…Bradyrhizobium is considered so far as the main genus of symbiotic nitrogen-fixing bacteria associated with Retama species (Rodríguez-Echeverría et al, 2003; Boulila et al, 2009; Guerrouj et al, 2013b). Previous studies of Retama rhizobia have shown that this plant establishes a symbiotic relationship exclusively with species of the genus Bradyrhizobium .…”

Section: Introductionmentioning

confidence: 99%

“…These isolates were classified later as B. canariense (Ruiz-Díez et al, 2008). The R. sphaerocarpa nodulating bacteria isolated by Boulila et al (2009) constituted a new phylogenetic clade in the genus Bradyrhizobium . Guerrouj et al (2013b) described B. retamae , the first species of Bradyrhizobium genus isolated from R. monosperma , in the subhumid area of Saidia in Northern Morocco, which was able to nodulate R. sphaerocarpa but not Glycine max .…”

Section: Introductionmentioning

confidence: 99%

Nodulation of Retama monosperma by Ensifer aridi in an Abandonned Lead Mine Soils in Eastern Morocco

et al. 2019

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Millions tons of lead and zinc wastes from the abandoned Touissit mine are stored in the open air as dikes in the vicinity of the villages in Eastern Morocco and pose a real danger to both the environment and local populations. To prevent the movement of minerals to the nearby villages and limit the damages to the environment and health, we proposed the nitrogen-fixing leguminous shrub Retama monosperma , as a model plant to use for phytostabilization experimentations. This plant species is known by its ability to grow in hard climatic conditions and in heavy metals contaminated soils. The isolation of bacterial strains nodulating R. monosperma in the abandoned mine soils will permit the selection of rhizobia to inoculate young plant seedlings before their use for the phytostabilization of the mine tailings. In this work, 44 bacteria were isolated from the root nodules of R. Monosperma grown in the Touissit abandoned mine. Twenty-four isolates were considered as true rhizobia as they possess a copy of the nodC symbiotic gene and were able to renodulate their original host. The phenotypic characterization showed that all the strains are tolerant in vitro to different concentrations of heavy metals. The analysis of the 16S rRNA sequences of two selected representative strains showed they were related to different strains of Ensifer aridi isolated from different legumes in three continents deserts. The glnII , recA , and gyrB housekeeping genes analysis confirmed the affiliation of the strains to E. aridi . Moreover, the phylogenic analysis of nodA , nodC , and nifH symbiotic genes showed that the strains are more related to E. aridi JNVUTP6 species isolated from Tephrosia purpurea root nodules in the Thar Desert in India. To our knowledge, this is the first report about the isolation of E. aridi from R. monosperma root nodules.

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Retama species growing in different ecological–climatic areas of northeastern Algeria have a narrow range of rhizobia that form a novel phylogenetic clade within the Bradyrhizobium genus

Cited by 24 publications

References 39 publications

Phylogeny and Phylogeography of Rhizobial Symbionts Nodulating Legumes of the Tribe Genisteae

Phylogeny and Phylogeography of Rhizobial Symbionts Nodulating Legumes of the Tribe Genisteae

Genetic and phenotypic diversity of rhizobia nodulating chickpea (Cicer arietinumL.) in soils from southern and central Ethiopia

Nodulation of Retama monosperma by Ensifer aridi in an Abandonned Lead Mine Soils in Eastern Morocco

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