Growth promotion of rapeseed (Brassica napus) associated with the inoculation of phosphate solubilizing bacteria

Valetti, Lucio; Iriarte, Liliana; Fabra, Adriana

doi:10.1016/j.apsoil.2018.08.017

Cited by 64 publications

(43 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is evidence supporting fertilization with PSB improves plant growth, since various microorganisms in the soil, including bacteria, improve P supply to the plant, as a result of their capacity to solubilize phosphorus [ 22 ]. Taking into account P availability is a limiting step in plant nutrition; suggesting PSB provides a fundamental contribution, thus improves the growth performance of plants [ 12 , 80 , 81 ]. Sridevi & Ramakrishnandevi, (2010) demonstrated co-inoculation with bacteria of the genus Azospirillum and arbuscular mycorrhizal fungi favored germination of A. cepa seeds, the establishment seedbeds and plots, due to combined production or promoting plant substances and to greater availability of nutrients, such as phosphorus [ 9 ].…”

Section: Discussionmentioning

confidence: 99%

“…Phosphorous solubilizing bacteria (PSB) represent 20–40 % of the soil's microbiota characterized by their metabolic versatility, capability of colonizing roots and diverse enzyme and metabolite production [ 11 , 12 ]. In addition, they have the capacity to solubilize phosphate minerals, such as di- and tri-calcium phosphate, hydroxyapatite and PR [ 10 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phosphate-solubilizing Pseudomonas sp., and Serratia sp., co-culture for Allium cepa L. growth promotion

Blanco-Vargas

Rodríguez-Gacha

Sánchez-Castro

et al. 2020

Heliyon

View full text Add to dashboard Cite

Different genus of bacteria has been reported with the capacity to solubilize phosphorus from phosphate rock (PR). Pseudomonas sp., (A18) and Serratia sp., (C7) isolated from soils at the “ Departamento de Boyacá ” Colombia, where Allium cepa is cultivated. Bacteria were cultured in MT11B media and evaluated as a bio-fertilizer for A. cepa germination and growth during two months at greenhouse scale. Pseudomonas sp., and Serratia sp., cultured at 30 °C, 48 h in SMRS1 agar modified with PR, (as an inorganic source of phosphorus), presented a phosphate solubilization index (SI) of 2.1 ± 0.2 and 2.0 ± 0.3 mm, respectively. During interaction assays no inhibition halos were observed, demonstrating there was no antagonism between them. In MT11B media growth curve (12 h) demonstrated that co-culture can grow in the presence of PR and glucose concentrations 7.5-fold, lower than in SMRS1 media and brewer's yeast hydrolysate; producing phosphatase enzymes with a volumetric activity of 1.3 ± 0.03 PU at 6 h of culture and 0.8 ± 0.04 PU at 12 h. Moreover, co-culture released soluble phosphorus at a rate of 58.1 ± 0.28 mg L −1 at 8 h and 88.1 ± 0.32 mg L −1 at 12 h. After five days of evaluation it was observed that germination percentage was greater than 90 % of total evaluated seeds, when placing them in contact with the co-culture in a concentration of 1 × 10 8 CFU mL −1 . Furthermore, it was demonstrated that co-culture application (10 mL per experimental unit to complete 160 mL in two months) at 8.0 Log 10 CFU mL −1 twice a week for two months increased A. cepa total dry weight (69 ± 13 mg) compared with total dry weight (38 ± 5.0 mg) obtained with the control with water.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phosphate-solubilizing Pseudomonas sp., and Serratia sp., co-culture for Allium cepa L. growth promotion

Blanco-Vargas

Rodríguez-Gacha

Sánchez-Castro

et al. 2020

Heliyon

View full text Add to dashboard Cite

show abstract

“…There is a growing interest in using P solubilizing bacteria as biofertilizers to increase the bioavailability of P in soils used for crop production and to enhance the efficiency of P fertilizer applications ( Figure 1D). Increases in plant performance and/or yield after an inoculation with P-solubilizing bacteria have been shown for many agronomically important crop species, including corn [153], soybean [154], wheat [154,155], rapeseed [156], mung bean [157], and tomatoes [158]. While the periodic application of P fertilizer has adverse effects on the structure and function of phosphate-solubilizing bacterial communities, the opposite is true when little or no superphosphate is applied [159].…”

Section: Phosphate Solubilizing Bacteria and Their Potential To Incrementioning

confidence: 99%

Harnessing Soil Microbes to Improve Plant Phosphate Efficiency in Cropping Systems

et al. 2019

View full text Add to dashboard Cite

Phosphorus is an essential macronutrient required for plant growth and development. It is central to many biological processes, including nucleic acid synthesis, respiration, and enzymatic activity. However, the strong adsorption of phosphorus by minerals in the soil decreases its availability to plants, thus reducing the productivity of agricultural and forestry ecosystems. This has resulted in a complete dependence on non-renewable chemical fertilizers that are environmentally damaging. Alternative strategies must be identified and implemented to help crops acquire phosphorus more sustainably. In this review, we highlight recent advances in our understanding and utilization of soil microbes to both solubilize inorganic phosphate from insoluble forms and allocate it directly to crop plants. Specifically, we focus on arbuscular mycorrhizal fungi, ectomycorrhizal fungi, and phosphate-solubilizing bacteria. Each of these play a major role in natural and agroecosystems, and their use as bioinoculants is an increasing trend in agricultural practices.

show abstract

“…In a search for phosphate solubilizers, Valetti et al (2018) isolated an Arthobacter strain that significatively increased the yield of rapeseed crops when compared with the yield produced by the negative control plots (no fertilized and non-inoculated). Interestingly, the harvest index derived from the Arthrobacter sp.…”

Section: Applications Of Plant Probiotic Actinobacteria In Agriculturementioning

confidence: 99%

Actinobacteria and Their Role as Plant Probiotics

Menéndez

Carro

2019

Soil Biology

View full text Add to dashboard Cite

Actinobacteria is one of the largest phyla within the domain Bacteria. This phylum comprises more than 400 genera heterogeneously distributed in up to 50 families, 20 orders and 6 classes, being composed with very diverse groups of microorganisms. Members included within this phylum were recovered from a wide range of aquatic and terrestrial environments and also from a huge number of higher organisms, including plants. Actinobacteria inhabiting soils and plants are well known as producers of bioactive molecules and as biocontrol agents, possessing antimicrobial activities mostly against pathogenic fungi and/or bacteria. Moreover, some of them have the capacity to exert beneficial effects on plant growth and development via different plant growth-promoting mechanisms, i.e., phytohormones biosynthesis, siderophore production, and phosphate solubilization, among others. The available genomic data revealed that members belonging to this phylum have a huge potential as Plant Probiotic Actinobacteria. A plethora of studies reported the isolation and identification of plant endophytic actinobacteria possessing those features and also their performance under controlled conditions. However, few studies show the effects of the inoculation of these actinobacteria on real field conditions. In this chapter, we will provide an overview of the available data on the Actinobacteria displaying plant growth-promoting features, particularly in the ones that already had applications in agriculture. Together with a correct taxonomic classification, we will present evidence that the Plant Probiotic Actinobacteria should be considered as a source of bacterial candidates that will be important for a future sustainable agriculture.

show abstract

Growth promotion of rapeseed (Brassica napus) associated with the inoculation of phosphate solubilizing bacteria

Cited by 64 publications

References 68 publications

Phosphate-solubilizing Pseudomonas sp., and Serratia sp., co-culture for Allium cepa L. growth promotion

Phosphate-solubilizing Pseudomonas sp., and Serratia sp., co-culture for Allium cepa L. growth promotion

Harnessing Soil Microbes to Improve Plant Phosphate Efficiency in Cropping Systems

Actinobacteria and Their Role as Plant Probiotics

Contact Info

Product

Resources

About