Effect of rhizobial inoculation methods and host plant provenances on nodulation and growth of Acacia senegal and Acacia nilotica

Sarr, Amadou; Diop, B.; Peltier, Régis; Neyra, Marc; Lesueur, Didier

doi:10.1007/s11056-004-5232-z

Cited by 28 publications

(24 citation statements)

References 17 publications

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“…Seed germination was conducted as described by Sarr et al (2005b). Rhizobial isolates were trapped in vitro on roots of A. senegal seedlings grown in Gibson tubes (Gibson, 1963).…”

Section: Rhizobial Trappingmentioning

confidence: 99%

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Distribution and Diversity of Rhizobial Populations Associated with <i>Acacia senegal</i> (L.) Willd. Provenances in Senegalese Arid and Semiarid Regions

Bakhoum¹,

Roux²,

Diouf³

et al. 2014

OJF

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Distribution and diversity of rhizobial strains associated with Acacia senegal (L.) Willd. in relation to seed provenances in soils from arid (Dahra) and semiarid (Goudiry) zones of Senegal were investigated. PCR-RFLP performed on 16S-23S rDNA intergenic spacer (IGS) of nodule crude extracts revealed a high genetic diversity of rhizobial strains, which was higher in the semiarid region than in the arid region. The distribution of rhizobial populations was influenced by soil physical and chemical characteristics, and by A. senegal provenances as shown by the analysis of correspondence. In contrast, the phenotypic diversity of rhizobial strains was not correlated with the soil origin. The phylogenetic tree (performed by the maximum likelihood algorithm) of IGS 16S-23S sequences showed that most of the rhizobial strains nodulating A. senegal were closely related to Mesorhizobium plurifarium. Our results showed that rhizobial taxa associated with A. senegal were mainly distributed according to soil physical and chemical characteristics, and A. senegal provenances. A large subset of A. senegal root-nodulating bacteria had high diversity that correlated with the most favourable environmental conditions. Understanding the diversity and distribution of rhizobial strains may be exploited in the formulation of A. senegal inoculants for different seed provenances for resilience to soil stresses in various environmental conditions.

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“…Seed germination was conducted as described by Sarr et al (2005b). Rhizobial isolates were trapped in vitro on roots of A. senegal seedlings grown in Gibson tubes (Gibson, 1963).…”

Section: Rhizobial Trappingmentioning

confidence: 99%

“…It suggests that A. senegal trees may select their symbiotic partners. Consequently, their genetic polymorphism is reflected in their nodulation as suggested by Sarr et al (2005b).…”

Section: Relationship Between Rhizobium Diversity and A Senegal Provmentioning

confidence: 99%

Distribution and Diversity of Rhizobial Populations Associated with <i>Acacia senegal</i> (L.) Willd. Provenances in Senegalese Arid and Semiarid Regions

Bakhoum¹,

Roux²,

Diouf³

et al. 2014

OJF

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“…However several studies have indicated that the ability of an inoculum to induce a functional symbiosis will depend of the strain and also the provenance of A. nilotica (Sarr et al 2005b).…”

mentioning

confidence: 99%

Soil bio-functioning under Acacia nilotica var. tomentosa protected forest along the Senegal River

Faye

Sall²,

Chotte

et al. 2007

Nutr Cycl Agroecosyst

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Acacia nilotica var. tomentosa trees from the Diarra protected forest located in the Senegal River valley were identified for the assessment of both biological nitrogen fixation, using the natural abundance method, and soil bio-functioning parameters (nodulation, root biomass, total microbial biomass, and potential N mineralization). The presence and the genetic diversity of indigenous rhizobia nodulating A. nilotica var. tomentosa was also investigated, taking into account distance from the trunk (0, 1, 2, and 3 m) and depth (0-25, 25-50, and 50-75 cm).

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“…In order to increase the inoculant quality and effi ciency, and to reduce costs and environmental impacts, alternative carrier materials have been studied (Ben Rebah et al, 2007;Albareda et al, 2008), including single and composite polymer formulations (Dommergues et al, 1979;Jawson et al, 1989;Denardin & Freire, 2000;Schuh, 2005;Deaker et al, 2007), which have already been evaluated as rhizobial carriers (Dommergues et al, 1979;Denardin & Freire, 2000;Sarr et al, 2005), and associative bacteria (Bashan & Gonzales, 1999).…”

Section: Introductionmentioning

confidence: 99%

Polymers as carriers for rhizobial inoculant formulations

Fernandes‐Júnior

Rohr

Oliveira

et al. 2009

Pesq. agropec. bras.

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-The aim of this work was to evaluate the effi ciency of carboxymethyl cellulose (CMC) and starch blends as carrier materials of rhizobial inoculants regarding their capacity to maintain viable cells and promote cowpea (Vigna unguiculata) nodulation. The experimental design adopted was completely randomized, with three replicates. Forty different compositions of carboxymethyl cellulose (CMC) with starch, compatibilized or not with different proportions of MgO or ZnO, were evaluated regarding their ability of maintaining rhizobial viable cells during the storage period of one month at room temperature, in an initial screening. Thereafter, selected inoculant carrier blends were evaluated regarding their ability to maintain viable rhizobial cells for a period of 165 days, and their performance as inoculant carriers was compared to a peat-based inoculant carrier under greenhouse conditions. Rhizobial cells were better maintained in blends containing 50-60% CMC. Compatibilizing agents did not increase survival of rhizobial cells for 30 days of storage. The cowpea nodulation of polymer blends was statistically the same of peat-based inoculants. CMC/starch polymer blends are effi cient carriers to rhizobial inoculants for up to 165 days of storage, when compatibilized with MgO (1%).Index terms: Bradyrhizobium japonicum, Vigna unguiculata, biological nitrogen fi xation, carboxymethyl cellulose, inoculant technology, polymer blends. Polímeros como veículos para formulações de inoculantes rizobianosResumo -O objetivo deste trabalho foi avaliar a efi ciência de misturas poliméricas de carboximetilcelulose (CMC) e amido, como veículos de inoculante para rizóbios, quanto à sua capacidade de manter células rizobianas viáveis e promover a nodulação em feijão-caupi (Vigna unguiculata). O delineamento experimental foi completamente casualizado, com três repetições. Quarenta diferentes composições poliméricas de carboximetilcelulose (CMC) e amido, compatibilizadas ou não com proporções de MgO ou ZnO, foram inicialmente avaliadas quanto à sua capacidade de manter células rizobianas viáveis pelo período de um mês. Posteriormente, veículos de inoculantes selecionados foram avaliados quanto à capacidade de manter células rizobianas viáveis pelo período de 165 dias, e seu desempenho como veículos de inoculantes foi comparado com os de inoculantes turfosos, em casa de vegetação. Células rizobianas sobreviveram melhor em misturas com 50-60% de CMC. Os agentes compatibilizantes não aumentaram a sobrevivência das células rizobianas após 30 dias de estocagem. A nodulação do feijão-caupi com o uso das misturas poliméricas não diferiu estatisticamente da nodulação com o uso da turfa. As misturas de CMC/amido, quando compatibilizadas com MgO (1%), são veículos efi cientes para inoculantes rizobianos por até 165 dias de armazenamento.Termos para indexação: Bradyrhizobium japonicum, Vigna unguiculata, fi xação biológica de nitrogênio, carboximetilcelulose, tecnologia de inoculantes, misturas poliméricas.

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Effect of rhizobial inoculation methods and host plant provenances on nodulation and growth of Acacia senegal and Acacia nilotica

Cited by 28 publications

References 17 publications

Distribution and Diversity of Rhizobial Populations Associated with <i>Acacia senegal</i> (L.) Willd. Provenances in Senegalese Arid and Semiarid Regions

Distribution and Diversity of Rhizobial Populations Associated with <i>Acacia senegal</i> (L.) Willd. Provenances in Senegalese Arid and Semiarid Regions

Soil bio-functioning under Acacia nilotica var. tomentosa protected forest along the Senegal River

Polymers as carriers for rhizobial inoculant formulations

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Effect of rhizobial inoculation methods and host plant provenances on nodulation and growth of Acacia senegal and Acacia nilotica

Cited by 28 publications

References 17 publications

Distribution and Diversity of Rhizobial Populations Associated with &lt;i&gt;Acacia senegal&lt;/i&gt; (L.) Willd. Provenances in Senegalese Arid and Semiarid Regions

Distribution and Diversity of Rhizobial Populations Associated with &lt;i&gt;Acacia senegal&lt;/i&gt; (L.) Willd. Provenances in Senegalese Arid and Semiarid Regions

Soil bio-functioning under Acacia nilotica var. tomentosa protected forest along the Senegal River

Polymers as carriers for rhizobial inoculant formulations

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Distribution and Diversity of Rhizobial Populations Associated with <i>Acacia senegal</i> (L.) Willd. Provenances in Senegalese Arid and Semiarid Regions

Distribution and Diversity of Rhizobial Populations Associated with <i>Acacia senegal</i> (L.) Willd. Provenances in Senegalese Arid and Semiarid Regions