Use of Sinorhizobium (Ensifer) fredii for soybean inoculants in South Spain

Albareda, Marta; Rodríguez-Navarro, Dulce N.; Temprano, F.

doi:10.1016/j.eja.2008.10.002

Cited by 37 publications

(23 citation statements)

References 35 publications

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“…Similar findings were previously reported on soybean by [33,56]. The increments in seed yields in the full N-fertilized plots (TN) and/or inoculated plots, in relation to the uninoculated non-N fertilized plots (T 0 ) controls indicate that, in these soils, nitrogen is a limiting factor, and that crop yields could be strongly improved by means of inoculation or fertilization.…”

Section: Discussionsupporting

confidence: 76%

Improvement of Faba Bean Yield Using Rhizobium/Agrobacterium Inoculant in Low-Fertility Sandy Soil

2017

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Soil fertility is one of the major limiting factors for crop's productivity in Egypt and the world in general. Biological nitrogen fixation (BNF) has a great importance as a non-polluting and a cost-effective way to improve soil fertility through supplying N to different agricultural systems. Faba bean (Vicia faba L.) is one of the most efficient nitrogen-fixing legumes that can meet all of their N needs through BNF. Therefore, understanding the impact of rhizobial inoculation and contrasting soil rhizobia on nodulation and N 2 fixation in faba bean is crucial to optimize the crop yield, particularly under low fertility soil conditions. This study investigated the symbiotic effectiveness of 17 Rhizobium/Agrobacterium strains previously isolated from different Egyptian governorates in improving the nodulation and N 2 fixation in faba bean cv. Giza 843 under controlled greenhouse conditions. Five strains that had a high nitrogen-fixing capacity under greenhouse conditions were subsequently tested in field trials as faba bean inoculants at Ismaillia Governorate in northeast Egypt in comparison with the chemical N-fertilization treatment (96 kg N·ha −1 ). A starter N-dose (48 kg N·ha −1 ) was applied in combination with different Rhizobium inoculants. The field experiments were established at sites without a background of inoculation under low fertility sandy soil conditions over two successive winter growing seasons, 2012/2013 and 2013/2014. Under greenhouse conditions, inoculated plants produced significantly higher nodules dry weight, plant biomass, and shoot N-uptake than non-inoculated ones. In the first season (2012/2013), inoculation of field-grown faba bean showed significant improvements in seed yield (3.73-4.36 ton·ha −1 ) and seed N-yield (138-153 Kg N·ha −1 ), which were higher than the uninoculated control (48 kg N·ha −1 ) that produced 2.97 Kg·ha −1 and 95 kg N·ha −1 , respectively. Similarly, in the second season (2013/2014), inoculation significantly improved seed yield (3.16-4.68 ton·ha −1 ) and seed N-yield (98-155 Kg N·ha −1 ) relative to the uninoculated control (48 kg N·ha −1 ), which recorded 2.58 Kg·ha −1 and 80 kg N·ha −1 , respectively. Interestingly, faba bean inoculated with strain Rlv NGB-FR 126 showed significant increments in seed yield (35%-48%) and seed N-yield (34%-49%) compared to the inorganic N fertilizers treatment (96 kg N·ha −1 ) over the two cropping seasons, respectively. These results indicate that inoculation of faba bean with effective rhizobial strains can reduce the need for inorganic N fertilization to achieve higher crop yield under low fertility soil conditions.

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Section: Discussionsupporting

confidence: 76%

Improvement of Faba Bean Yield Using Rhizobium/Agrobacterium Inoculant in Low-Fertility Sandy Soil

2017

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“…In contrast to the widely distributed Bradyrhizobium, Sinorhizobium strains nodulating soybeans were mainly found in Asia (9,10,(15)(16)(17)(18) and were reported as the dominant microsymbionts of soybeans in saline-alkaline soils (9,10,16,17). Moreover, Sinorhizobium strains have been demonstrated to be successful soybean inoculants under these soil conditions (19,20). Consistent with these findings, recent comparative genomics of soybean rhizobia revealed distinct genomic features specific to either Sinorhizobium or Bradyrhizobium (21).…”

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confidence: 60%

Replicon-Dependent Differentiation of Symbiosis-Related Genes in Sinorhizobium Strains Nodulating Glycine max

Guo

Wang

Zhang

et al. 2014

Appl Environ Microbiol

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In order to investigate the genetic differentiation of Sinorhizobium strains nodulating Glycine max and related microevolutionary mechanisms, three housekeeping genes (SMc00019, truA, and thrA) and 16 symbiosis-related genes on the chromosome (7 genes), pSymA (6 genes), and pSymB (3 genes) were analyzed. Five distinct species were identified among the test strains by calculating the average nucleotide identity (ANI) of SMc00019-truA-thrA: Sinorhizobium fredii, Sinorhizobium sojae, Sinorhizobium sp. I, Sinorhizobium sp. II, and Sinorhizobium sp. III. These species assignments were also supported by population genetics and phylogenetic analyses of housekeeping genes and symbiosis-related genes on the chromosome and pSymB. Different levels of genetic differentiation were observed among these species or different replicons. S. sojae was the most divergent from the other test species and was characterized by its low intraspecies diversity and limited geographic distribution. Intergenic recombination dominated the evolution of 19 genes from different replicons. Intraspecies recombination happened frequently in housekeeping genes and symbiosis-related genes on the chromosome and pSymB, whereas pSymA genes showed a clear pattern of lateral-transfer events between different species. Moreover, pSymA genes were characterized by a lower level of polymorphism and recombination than those on the chromosome and pSymB. Taken together, genes from different replicons of rhizobia might be involved in the establishment of symbiosis with legumes, but these symbiosis-related genes might have evolved differently according to their corresponding replicons.

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“…Yet, there is no agreement on the best adhesives. Each manufacturer or experimentalist empirically evaluates which adhesive best fits seeds and inoculants (Albareda et al 2008(Albareda et al , 2009. When seeds are inoculated with liquid inoculant, with or without dissolved adhesive, the inoculant is sprayed directly onto the seeds.…”

Section: Seed Inoculationmentioning

confidence: 99%

Advances in plant growth-promoting bacterial inoculant technology: formulations and practical perspectives (1998–2013)

Bashan¹,

de‐Bashan²,

et al. 2013

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Background Inoculation of plants to enhance yield of crops and performance of other plants is a century old, proven technology for rhizobia and a newer venue for plant growth-promoting bacteria and other plant symbionts. The two main aspects dominating the success of inoculation are the effectiveness of the bacterial isolate and the proper application technology. Scope An assessment of practical aspects of bacterial inoculants for contemporary agriculture and environmental restoration is critically evaluated from the point of view of their current technological status, current applications, and future use. This is done because there are windows of opportunity for new developments in applied research using renewable, non-contaminated natural resources and new venues for research. Special emphasis is given to formulations and polymeric carriers. This review concentrates on practical aspect of inoculation technology dating from 1998 to 2013. Earlier publications are mentioned only for clarification of a specific point. Conclusions This review discusses characteristics of a carrier for inoculants, formulations of inoculants including liquid, organic, inorganic, polymeric, and encapsulated formulations. Technical aspects include inoculation techniques (soil and seed application), mass culture production, bulk sterilization, seed coating, shelf-life, and effect of moisture. Future research venues needed are noted.

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Use of Sinorhizobium (Ensifer) fredii for soybean inoculants in South Spain

Cited by 37 publications

References 35 publications

Improvement of Faba Bean Yield Using Rhizobium/Agrobacterium Inoculant in Low-Fertility Sandy Soil

Improvement of Faba Bean Yield Using Rhizobium/Agrobacterium Inoculant in Low-Fertility Sandy Soil

Replicon-Dependent Differentiation of Symbiosis-Related Genes in Sinorhizobium Strains Nodulating Glycine max

Advances in plant growth-promoting bacterial inoculant technology: formulations and practical perspectives (1998–2013)

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