Development of low-cost formulations of plant growth-promoting bacteria to be used as inoculants in beneficial agricultural technologies

Lobo, Constanza Belén; Tomás, Marı́a Silvina Juárez; Viruel, Emilce; Ferrero, Marcela Alejandra; Lucca, M. E.

doi:10.1016/j.micres.2018.10.012

Cited by 148 publications

(86 citation statements)

References 101 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Although freeze-dried K. pseudosacchari TL13 remained viable up to 6 months, this approach could not be suitable at industrial level for its higher production costs than others as foam drying ( Morgan et al, 2006 ). Indeed, production costs of a bio-formulate, which include raw material, equipment and staff, must be competitive in relation to that for the production of chemical fertilizers ( Lobo et al, 2019 ). In general, the use of a low-cost culture medium for the growth and production of microbial biomass is an important issue ( Liu et al, 2014 ; Xu et al, 2015 ).…”

Section: Discussionmentioning

confidence: 99%

Development and Application of Low-Cost and Eco-Sustainable Bio-Stimulant Containing a New Plant Growth-Promoting Strain Kosakonia pseudosacchari TL13

Romano

Ventorino

Ambrosino³

et al. 2020

Front. Microbiol.

View full text Add to dashboard Cite

The use of beneficial microbes as inoculants able to improve fitness, growth and health of plants also in stress conditions is an attractive low-cost and eco-friendly alternative strategy to harmful chemical inputs. Thirteen potential plant growth-promoting bacteria were isolated from the rhizosphere of wheat plants cultivated under drought stress and nitrogen deficiency. Among these, the two isolates TL8 and TL13 showed multiple plant growth promotion activities as production of indole-3-acetic acid (IAA), siderophores, ammonia, and 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase production, the ability to solubilize phosphate as well as exerted antimicrobial activity against plant pathogens as Botrytis spp. and Phytophthora spp. The two selected strains were identified as Kosakonia pseudosacchari by sequencing of 16S rRNA gene. They resulted also tolerant to abiotic stress and were able to efficiently colonize plant roots as observed in vitro assay under fluorescence microscope. Based on the best PGP properties, the strain K. pseudosacchari TL13 was selected to develop a new microbial based formulate. A sustainable and environmentally friendly process for inoculant production was developed using agro-industrial by-products for microbial growth. Moreover, the application of K. pseudosacchari TL13- based formulates in pot experiment improved growth performance of maize plants.

show abstract

Section: Discussionmentioning

confidence: 99%

Development and Application of Low-Cost and Eco-Sustainable Bio-Stimulant Containing a New Plant Growth-Promoting Strain Kosakonia pseudosacchari TL13

Romano

Ventorino

Ambrosino³

et al. 2020

Front. Microbiol.

View full text Add to dashboard Cite

show abstract

“…With climate change, soil quality declines, mostly because soil microbial communities are deeply affected, negatively impacting the degradation of organic pollutants (Ai et al 2018) and soil organic matter (Chen et al 2016) or nitrogen fixation (Lobo et al 2018). In order to prevent nutritional losses of crops farmers must work towards yield optimization and smart fertilization decisions.…”

Section: Strategies To Preserve the Nutritional Content In Future CLImentioning

confidence: 99%

“…Additionally, sustainable alternatives to synthetic fertilizers which may sustain plant nutrition in a changing climate include plant growth-promoting bacteria (PGPB) inoculants, which can be used as biological fertilizers (Olanrewaju et al 2017). These are associated with many mechanisms that improve not only plants' health, but also soil conditions, such as, phosphate solubilisation, nitrogen fixation, siderophore and phytohormone production, ethylene regulation and biological control (Lobo et al 2018). For example, the inoculation of Pseudomonas fluorescens in a grass species was able to aid in the decomposition of the increased plant C inputs associated with eCO 2 , while promoting plant productivity (Nie et al 2015).…”

Section: Strategies To Preserve the Nutritional Content In Future CLImentioning

confidence: 99%

“…With this strategy, it is possible to perform a pre-selection of the PGPB to optimize plant growth for each specific field condition (Silva et al 2018). This might be optimal for small farming conditions, but in a wider scale, challenges still reside regarding stability and economic feasibility (Lobo et al 2018).…”

Section: Strategies To Preserve the Nutritional Content In Future CLImentioning

confidence: 99%

See 1 more Smart Citation

Preserving the nutritional quality of crop plants under a changing climate: importance and strategies

et al. 2019

View full text Add to dashboard Cite

Background Global climate is changing more rapidly than ever, threatening plant growth and productivity while exerting considerable direct and indirect effects on the quality and quantity of plant nutrients. Scope This review focuses on the global impact of climate change on the nutritional value of plant foods. It showcases the existing evidence linking the effects of climate change factors on crop nutrition and the concentration of nutrients in edible plant parts. It focuses on the effect of elevated CO 2 (eCO 2), elevated temperature (eT), salinity, waterlogging and drought stresses, and what is known regarding their direct and indirect influence on nutrient availability. Furthermore, it provides possible strategies to preserve the nutritional composition of plant foods under changing climates. Conclusions Climate change has an impact on the accumulation of minerals and protein in crop plants, with eCO 2 being the underlying factor of most of the reported changes. The effects are clearly dependent on the type, intensity and duration of the imposed stress, plant genotype and developmental stage. Strong interactions (both positive and negative) can be found between individual climatic factors and soil availability of nitrogen (N), potassium (K), iron (Fe) and phosphorous (P). The development of future interventions to ensure that the world's population has access to plentiful, safe and nutritious food may need to rely on breeding for nutrients under the context of climate change, including legumes in cropping systems, better farm management practices and utilization of microbial inoculants that enhance nutrient availability.

show abstract

“…Phosphorus solubilizing microorganisms (PSMs) are considered crucial in the transition to a sustainable agriculture (Mora et al 2017), as they play a fundamental role in the P cycle due to the ability to mobilize this element from different sources (Musarrat and Khan 2014). In the last decades, studies on P-solubilizing bacteria have found that the main mechanisms involve acidification, chelation, and exchange reactions associated with the exudation of low molecular weight organic acids (Vazquez et al 2000;Chen et al 2006;Collavino et al 2010;Lobo et al 2019). However, several species of fungi have garnered attention in P solubilization for their higher efficiency when compared to bacteria (Chuang et al 2007).…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Aspergillus tubingensis and Talaromyces islandicus Solubilize Rock Phosphate Under Saline and Fungicide Stress and Improve Zea mays Growth and Phosphorus Nutrition

López

Gallego

Vargas-Ruiz

et al. 2020

J Soil Sci Plant Nutr

View full text Add to dashboard Cite

The purpose of this study was to evaluate the capability of Aspergillus tubingensis and Talaromyces islandicus to solubilize inorganic phosphorus sources, their activity under abiotic stress, and the enhancement of P availability in soils and plant growth. The P-solubilizing capability and acidification mechanism of the strains were assessed in vitro using tricalcium phosphate and rock phosphate. Independent assays were conducted with rock phosphate under NaCl and fungicides carbendazim, chlorothalonil, and propamocarb hydrochloride using a factorial design. Thereafter, the effects of fungal inoculations in rock phosphate-amended soil and P nutrition of Zea mays were assessed in a greenhouse experiment. Both fungi solubilized P in vitro via acidification through the exudation of acetic, citric, lactic, malic, quinic, and succinic acids. The P-solubilizing efficiency of A. tubingensis was maintained above 97.5% under 0.5 to 3.0% NaCl, up to 28.7% in the treatment with carbendazim, up to 5.3% with chlorothalonil, and above 96.5% with propamocarb hydrochloride; while T. islandicus efficiency decreased to 45.2% in a NaCl concentration-dependent trend, and maintained it above 80% in the fungicide treatments. The inoculation with A. tubingensis increased the available P in the amended soil by up to 65% after 30 days and resulted in 87% higher foliar P content, 111% greater plant height, and 25% greater dry weight of maize shoots. Similarly, T. islandicus contributed to these parameters in 55, 67, 90, and 17%, respectively. These findings suggest their potential as qualified phosphorus solubilizing microorganisms to develop novel and sustainable approaches for P fertilization in agriculture.

show abstract

Development of low-cost formulations of plant growth-promoting bacteria to be used as inoculants in beneficial agricultural technologies

Cited by 148 publications

References 101 publications

Development and Application of Low-Cost and Eco-Sustainable Bio-Stimulant Containing a New Plant Growth-Promoting Strain Kosakonia pseudosacchari TL13

Development and Application of Low-Cost and Eco-Sustainable Bio-Stimulant Containing a New Plant Growth-Promoting Strain Kosakonia pseudosacchari TL13

Preserving the nutritional quality of crop plants under a changing climate: importance and strategies

Aspergillus tubingensis and Talaromyces islandicus Solubilize Rock Phosphate Under Saline and Fungicide Stress and Improve Zea mays Growth and Phosphorus Nutrition

Contact Info

Product

Resources

About