Aluminium tolerance in the tropical leguminous N2-fixing shrub Acaciella angustissima (Mill.) Britton &amp; Rose inoculated with Sinorhizobium mexicanum

Rincón-Rosales, Reiner; Montes-Molina, Joaquín A.; Gutiérrez-Miceli, Federico Antonio; Dendooven, Luc

doi:10.4067/s0717-66432011000200009

Cited by 4 publications

(4 citation statements)

References 35 publications

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“…Brady et al 1990 reported that Al at < 5 µM has shown reduction in nodulation of soybean. Inoculation of Sinorhizobium mexicanum ITTG 27 T to Acaciella angusstissime plants enhanced nitrogen content (Rosales et al 2011). Al toxicity has shown negative effect on symbiotic nitrogen fixation in common bean plants that were grown hydroponically in acidic nutrient solution containing 70 µM AlCl 3 (Mendoza-Soto et al 2015).…”

Section: Discussionmentioning

confidence: 99%

Symbiotic efficiency, biosorption and the growth of rhizobia on Horse gram plants under aluminium stress

Edulamudi,

Johnson Anthony Masilamani,

Ramana Sai Gopal Divi

et al. 2019

ABS

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The aim of the present study was to evaluate the tolerance potential of Horse gram rhizobia to aluminium (Al) toxicity, the enhancement in pod formation, symbiotic efficiency and biosorption potential in the rhizobia inoculated Horse gram (Macrotyloma uniflorum (Lam.) Verdc.) plants. Initially, 32 isolates of Horse gram rhizobia were screened for their tolerance of Al in growth media. Among the 32 strains, HGR 4, 6, 13 and 25 that were more tolerant were inoculated individually to Horse gram plants and the plants were then screened for the ability of pod formation, symbiotic efficiency and biosorption potential. Among them, maximum pod formation was observed in Horse gram upon inoculation with HGR-6 and grown at 400 µg g-1 of Al. Maximum nodulation was observed in Horse gram upon inoculation with HGR-6 and HGR-13 grown at 200 µg g-1 Al. Leghaemoglobin content was maximumon inoculation with HGR-13 at 400 µg g-1 of Al. The strain HGR-13 has shown biosorption potential in soil and as well as in root nodules even at 300 µg g-1 of Al though it was maximum at 100 µg g-1. This study demonstrated that the Horse gram plantsinoculated with Rhizobium strains HGR - 4, 6, 13 and 25, besides having nitrogen fixing ability also have the ability to grow in Al contaminated soils. Hence, Horse gram plants associated with these strains of rhizobia could be used in phytoremediation ofmetal (Al) contaminated soils.

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Section: Discussionmentioning

confidence: 99%

Symbiotic efficiency, biosorption and the growth of rhizobia on Horse gram plants under aluminium stress

Edulamudi,

Johnson Anthony Masilamani,

Ramana Sai Gopal Divi

et al. 2019

ABS

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“…Plants inoculated only with the ITTG-R7 T strain had the highest positive effect and were statistically similar to those obtained with chemical fertilizers, but higher than the results obtained with the application of the commercial strain A. brasilense CD. The superior effect obtained by S. mexicanum ITTG-R7 T compared with A. brasilence CD can be attributed to the fact that ITTG-R7 T is a native strain, adapted to the environmental conditions of the area [19,21]. These findings are important because they ensure the use of the strain ITTG-R7 T as an efficient inoculant, which can be compared with commercial products.…”

Section: Discussionmentioning

confidence: 99%

“…Sinorhizobium have the ability to fix nitrogen in symbiosis with leguminous plants [16][17][18]. Among these, Sinorhizobium mexicanum ITTG-R7 T , isolated from nodules of the legume Acaciella angustissima stimulated the growth of different plant species [13,[19][20][21]. Sinorhizobium mexicanum ITTG-R7 T stands out for being the best strain to promote plant growth and to compete in interstrain nodule competition assays [20].…”

Section: Introductionmentioning

confidence: 99%

Growth Promotion of Guava “Pear” (Psidium guajava cv.) by Sinorhizobium mexicanum in Southern Mexican Agricultural Fields

et al. 2022

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Biofertilizers formulated with nitrogen-fixing bacteria represent an alternative to chemical fertilizers because they increase soil fertility and protect the environment. Therefore, the objective of this study was to analyze the effects on the growth of guava “pear” (Psidium guajava cv.) after inoculation with a nitrogen fixing bacterium Sinorhizobium mexicanum ITTG-R7T. The study was carried out in an agricultural rural area of Chiapas, Mexico, where farmers do not have programs of regenerative agriculture. First, the agricultural soil was subjected to physicochemical and metagenomic analysis in order to determine the soil quality and its bacterial community composition. Likewise, multifunctional biochemical tests and plant inoculation assays were evaluated to determine the potential of S. mexicanum ITTG-R7T as plant-growth-promoting bacteria (PGPB). The site was rain fed and had silty clay loam soil with abundant Bacillaceae. S. mexicanum ITTG-R7T showed different properties as PGPB such as the production of indole compounds, synthesis of extracellular enzymes, phosphate solubilization, synthesis of siderophores, ACC (1-aminocyclopropane-1-carboxylate) deaminase, and nitrogenase activity (ARA). When the strain ITTG-R7 T was combined with chemical nutrients, it had the highest positive effect on the growth and development of guava plants. Guava biofertilization with ITTG-R7T had a significant influence (p < 0.05) mainly on the total plant height (368.83 cm), number of flowers (36.0) and the amount of chlorophyll (2.81 mg mL−1) in comparison with the other treatments evaluated. ITTG-R7T is a promising strain for improving the guava crop yield.

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“…In field-level biofertilization experiments, these bacterial strains have demonstrated a positive impact on growth and fruit production in crops, as well as in other non-leguminous plant species [ 11 ]. These native bacteria exhibit desirable characteristics as plant growth-promoting (PGP) bacteria, including a high nitrogen fixation potential, phosphate solubilization, auxin synthesis, and siderophore production [ 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Cost-Effective Cultivation of Native PGPB Sinorhizobium Strains in a Homemade Bioreactor for Enhanced Plant Growth

Manzano-Gómez,

Rincón-Rosales,

Flores-Felix

et al. 2023

Bioengineering

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The implementation of bioreactor systems for the production of bacterial inoculants as biofertilizers has become very important in recent decades. However, it is essential to know the bacterial growth optimal conditions to optimize the production and efficiency of bioinoculants. The aim of this work was to identify the best nutriment and mixing conditions to improve the specific cell growth rates (µ) of two PGPB (plant growth-promoting bacteria) rhizobial strains at the bioreactor level. For this purpose, the strains Sinorhizobium mexicanum ITTG-R7T and Sinorhizobium chiapanecum ITTG-S70T were previously reactivated in a PY-Ca2+ (peptone casein, yeast extract, and calcium) culture medium. Afterward, a master cell bank (MCB) was made in order to maintain the viability and quality of the strains. The kinetic characterization of each bacterial strain was carried out in s shaken flask. Then, the effect of the carbon and nitrogen sources and mechanical agitation was evaluated through a factorial design and response surface methodology (RSM) for cell growth optimization, where µ was considered a response variable. The efficiency of biomass production was determined in a homemade bioreactor, taking into account the optimal conditions obtained during the experiment conducted at the shaken flask stage. In order to evaluate the biological quality of the product obtained in the bioreactor, the bacterial strains were inoculated in common bean (Phaseolus vulgaris var. Jamapa) plants under bioclimatic chamber conditions. The maximum cell growth rate in both PGPB strains was obtained using a Y-Ca2+ (yeast extract and calcium) medium and stirred at 200 and 300 rpm. Under these growth conditions, the Sinorhizobium strains exhibited a high nitrogen-fixing capacity, which had a significant (p < 0.05) impact on the growth of the test plants. The bioreactor system was found to be an efficient alternative for the large-scale production of PGPB rhizobial bacteria, which are intended for use as biofertilizers in agriculture.

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Aluminium tolerance in the tropical leguminous N2-fixing shrub Acaciella angustissima (Mill.) Britton & Rose inoculated with Sinorhizobium mexicanum

Cited by 4 publications

References 35 publications

Symbiotic efficiency, biosorption and the growth of rhizobia on Horse gram plants under aluminium stress

Symbiotic efficiency, biosorption and the growth of rhizobia on Horse gram plants under aluminium stress

Growth Promotion of Guava “Pear” (Psidium guajava cv.) by Sinorhizobium mexicanum in Southern Mexican Agricultural Fields

Cost-Effective Cultivation of Native PGPB Sinorhizobium Strains in a Homemade Bioreactor for Enhanced Plant Growth

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