Improvement of soybean grain nutritional quality under foliar inoculation with Azospirillum brasilense strain Az39

Puente, Mariana; Zawoznik, Myriam Sara; Sabando, Marcelo López de; Perez, Gonzalo; Gualpa, José Luis; Carletti, Susana M.; Cassán, Fabricio

doi:10.1007/s13199-018-0568-x

Cited by 33 publications

(22 citation statements)

References 31 publications

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“…Soybean develops symbiotic relationship with a range of PGPRs to fix nitrogen (N) and improve plant growth [11][12][13]. Establishment of symbiotic relationship between roots of the host plant and symbiont is a two-step process.…”

Section: Inoculation and Coinoculation Of Pgprsmentioning

confidence: 99%

“…In another study, coinoculation of soybean plants with strains of Pseudomonas and Bacillus, in combination with Sinorhizobium meliloti, has improved plant phosphorous uptake [16]. Moreover, Azospirillum has been used to increase the rhizobia-legume symbiotic relationship in soybean to improve its nutritive value [12]. For coinoculation, in vitro strain selection or genetically engineered strains are commonly used [17].…”

Section: Coinoculationmentioning

confidence: 99%

“…These crop models are applicable in varying environmental conditions; therefore, each model can have different versions for calculating N fixation. Thus, Liu et al (2011) [122] devised a general equation for these crop models: (12) where N fixpot indicates the potential rate of N to be fixed by legumes (g N fixed day À1 ), f represents the influence function of environmental conditions, f T is impact of soil temperature, f W can be taken as impact of water deficiency or flooding in soil, f N can estimate impact of availability of mineral N (nitrate and ammonia) in soil or N availability in root substrate, f C represents effect of C concentration in root and aerial parts of legume plant, and f gro is the effect of plant's growth stage on potential rate of N fixation. In the case of Environmental Policy Integrated Climate (EPIC) model and Simulateur mulTIdisciplinaire pour les Cultures Standard (STICS), the equation is generalized as:…”

Section: Crop Models As Example Of Dynamic Modelsmentioning

confidence: 99%

“…In some studies, foliar inoculation of PGPR is found to be more effective than inoculation or coinoculation. For instance, foliar inoculation of Azospirillum in later stages of plant growth is correlated to high N content in developing grains [12]. This is because of the release of IAA by Azospirillum, which instigated nodulation in secondary nodules, thereby facilitating N fixation and its uptake in growing soybean plants.…”

Section: Technical and Economic Aspectsmentioning

confidence: 99%

“…This is because of the release of IAA by Azospirillum, which instigated nodulation in secondary nodules, thereby facilitating N fixation and its uptake in growing soybean plants. Likewise, foliar inoculation of Azospirillum brasilense at advanced growing stage of soy plant proved to be much more effective than its inoculation and coinoculation with Bacillus japonicum at sowing stage [12,138]. However, foliar application at sowing stage is unable to produce any noticeable improvement in grain yield [12].…”

Section: Technical and Economic Aspectsmentioning

confidence: 99%

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Comprehensive Account of Inoculation and Coinoculation in Soybean

Khan¹,

Younas²,

Saleem³

et al. 2020

Nitrogen Fixation

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This chapter elaborates dependency of leguminous plants on rhizobia to carry out dynamic process of nitrogen fixation. Soybean, an extensively grown leguminous crop with 30% share in world's vegetable oil, is taken into account to understand its symbiotic relationship with plant growth-promoting rhizobacteria (PGPRs). This chapter narrates colonization of PGPRs on soybean roots and single and mixed inoculation and coinoculation of certain strains of specialized bacteria with rhizobia. PGPRs' coinoculation seemed more effective than mono-inoculation and is discussed in Ref. to nodulation rate. Moreover, dynamic linear models for quantification of leguminous biological nitrogen fixation (BNF) are reviewed. This chapter further uncoils the relevance of foliar application to the release of phytohormones by PGPRs, resulting in situ biosynthesis of active metabolites in phyllosphere. Inoculation of phytohormones is compared to their exogenous application for nodule organogenesis. Finally, the influence of coinoculation on enhanced micronutrient bioavailability is relayed. The chapter is concluded with technical and economic aspects of coinoculation in soybean.

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Section: Inoculation and Coinoculation Of Pgprsmentioning

confidence: 99%

Section: Coinoculationmentioning

confidence: 99%

Section: Crop Models As Example Of Dynamic Modelsmentioning

confidence: 99%

Section: Technical and Economic Aspectsmentioning

confidence: 99%

Section: Technical and Economic Aspectsmentioning

confidence: 99%

See 3 more Smart Citations

Comprehensive Account of Inoculation and Coinoculation in Soybean

Khan¹,

Younas²,

Saleem³

et al. 2020

Nitrogen Fixation

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Improving maize sustainability with partial replacement of N fertilizers by inoculation with Azospirillum brasilense

et al. 2022

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Maize (Zea mays L.) is a major cereal crop worldwide and demands N fertilizers, which can be replaced partially by plant growth-promoting bacteria. In Brazil, inoculants carrying Azospirillum brasilense strains Ab-V5 and Ab-V6 have exponentially grown, but a quantitative study on the replacement of N fertilizer by inoculants is still missing. Under greenhouse conditions, we investigated the effects of A. brasilense cells and metabolites applied via seeds or leaf-sprayed at the V3 growth stage on roots and confirmed strong benefits in traits that improve the uptake of water and nutrients.In the field, 30 trials were performed at 13 sites in Brazil over 10 yr, comparing noninoculated and inoculated maize receiving 0, 50, 75, and 100% (90 kg ha -1 of N) of N fertilizer (urea) applied as side-dress 35 d after emergence. Overall, inoculation significantly increased grain yield by 3.1%. Increases were confirmed in lower and higher yield levels, subtropical and tropical conditions, and clayey and sandy soils, with low and higher soil organic carbon levels. Yield increases due to inoculation were statistically significant at all levels of N fertilizer, except for at 50%. Inoculation with the supply of 75% of N increased yield by 4.6% compared with the noninoculated counterpart and, noteworthy, did not differ statistically from the non-inoculated control receiving 100% of N. These results confirmed the feasibility of replacing 25% of N-fertilizer applied as side-dress by seed inoculation with A. brasilense, besides the possibility of avoiding the emission of 4.95 million Mg of CO 2 -e per year. INTRODUCTIONAccording to the most accepted theory, maize (Zea mays L.) originated in Mesoamerica, more specifically in Mexico, about 7,000 yr ago. From there, the crop spread worldwide, reaching the position of the most produced cereal for humanAbbreviations: CFU, colony-forming units; CO 2 -e, CO 2 equivalents; DAE, days after emergence; DYGS, dextrose yeast glucose sucrose; GHG, greenhouse gases; IAA, indole-acetic acid; NFb, nitrogen-free broth.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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