scholarly journals Effects of Phosphate Solubilizing Bacteria on the Growth, Photosynthesis, and Nutrient Uptake of Camellia oleifera Abel.

Forests ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 348 ◽  
Author(s):  
Fei Wu ◽  
Jianrong Li ◽  
Yanliu Chen ◽  
Linping Zhang ◽  
Yang Zhang ◽  
...  
Keyword(s):  
Agricultural Production ◽  
Agricultural Practices ◽  
Leaf Nitrogen ◽  
Phosphate Solubilizing Bacteria ◽  
Camellia Oleifera ◽  
Available N ◽  
Positive Effects ◽  
P Content ◽  
Phosphate Solubilizing ◽  
Sustainable Agricultural Practices

Phosphorus (P) is a necessary nutrient for plant growth and plays an important role in plant metabolisms; however, the majority of P in soil is in insoluble forms. Phosphate solubilizing bacteria (PSB) can convert the insoluble phosphates into plant-available forms and may have the potential for use in sustainable agricultural practices. This study examined the effects of two native PSB, namely Bacillus aryabhattai (JX285) and Pseudomonas auricularis (HN038), and a mixture of both strains (1:1) on the growth of Camellia oleifera Abel. seedlings. The results showed a significant promotion of the growth of C. oleifera plants by three inoculation treatments. All the PSB inoculation treatments could improve the leaf nitrogen (N) and P content and had positive effects on the available N, P, and potassium (K) content of rhizosphere soil. A co-inoculation of the two native PSB strains caused a synergistic effect and achieved the best benefit. In conclusion, B. aryabhattai and P. auricularis could be used as biological agents instead of chemical fertilizers for agricultural production to reduce environmental pollution and increase the yield of tea oil.

scholarly journals Profiling of Plant Growth-Promoting Metabolites by Phosphate-Solubilizing Bacteria in Maize Rhizosphere

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1071
Author(s):  
Minchong Shen ◽  
Jiangang Li ◽  
Yuanhua Dong ◽  
Hong Liu ◽  
Junwei Peng ◽  
...  
Keyword(s):  
Plant Growth ◽  
Microbial Control ◽  
Agricultural Practices ◽  
Phosphate Solubilizing Bacteria ◽  
Mean Values ◽  
Plant Growth Promoting ◽  
Promote Plant Growth ◽  
Growth Promoting ◽  
Phosphate Solubilizing ◽  
Microbial Treatments

Microbial treatment has recently been attracting attention as a sustainable agricultural strategy addressing the current problems caused by unreasonable agricultural practices. However, the mechanism through which microbial inoculants promote plant growth is not well understood. In this study, two phosphate-solubilizing bacteria (PSB) were screened, and their growth-promoting abilities were explored. At day 7 (D7), the lengths of the root and sprout with three microbial treatments, M16, M44, and the combination of M16 and M44 (Com), were significantly greater than those with the non-microbial control, with mean values of 9.08 and 4.73, 7.15 and 4.83, and 13.98 and 5.68 cm, respectively. At day 14 (D14), M16, M44, and Com significantly increased not only the length of the root and sprout but also the underground and aboveground biomass. Differential metabolites were identified, and various amino acids, amino acid derivatives, and other plant growth-regulating molecules were significantly enhanced by the three microbial treatments. The profiling of key metabolites associated with plant growth in different microbial treatments showed consistent results with their performances in the germination experiment, which revealed the metabolic mechanism of plant growth-promoting processes mediated by screened PSB. This study provides a theoretical basis for the application of PSB in sustainable agriculture.

scholarly journals Harnessing Soil Microbes to Improve Plant Phosphate Efficiency in Cropping Systems

Agronomy ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 127 ◽  
Author(s):  
Arjun Kafle ◽  
Kevin Cope ◽  
Rachel Raths ◽  
Jaya Krishna Yakha ◽  
Senthil Subramanian ◽  
...  
Keyword(s):  
Mycorrhizal Fungi ◽  
Soil Microbes ◽  
Cropping Systems ◽  
Agricultural Practices ◽  
Arbuscular Mycorrhizal ◽  
Acid Synthesis ◽  
Phosphate Solubilizing Bacteria ◽  
Strong Adsorption ◽  
Phosphate Solubilizing ◽  
Complete Dependence

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.

Application of Extremophiles in Sustainable Agriculture

2022 ◽  
pp. 233-250
Author(s):  
Julius Eyiuche Nweze ◽  
Justus Amuche Nweze ◽  
Shruti Gupta
Keyword(s):  
Sustainable Agriculture ◽  
Bioactive Compounds ◽  
Environmental Conditions ◽  
Agricultural Production ◽  
Crucial Role ◽  
Crop Production ◽  
Agricultural Practices ◽  
Production Plant ◽  
Physiological Conditions ◽  
Sustainable Agricultural Practices

With the increasing demands for foods and other agriculture-based products, sustainable agricultural practices are the cornerstone for improving low-input agricultural production. In contrast to crop production, plant-microorganism interaction (PMI) plays a crucial role. PMI significantly raises productivity as well as maintaining the overall health of the crop. During harsh and extreme physiological conditions, plant-associated extremophilic microbes (PAEM) are known to contribute to crop production, survivability, and fitness. Thus, the application of extremophiles either in the form of biofertilizer or biopesticides is highly beneficial. Extremophiles have been adapted to withstand diverse harsh environmental conditions. They possess unique mechanisms at the molecular level to produce enormous potential extremozymes and bioactive compounds. Consequently, extremophiles represent the foundation of efficient and sustainable agriculture. This chapter introduces the significance and application of plant-associated extremophilic microbes in sustainable agriculture.

scholarly journals Interaction Between Halotolerant Phosphate-Solubilizing Bacteria (Providencia rettgeri Strain TPM23) and Rock Phosphate Improves Soil Biochemical Properties and Peanut Growth in Saline Soil

2021 ◽  
Vol 12 ◽  
Author(s):  
Huanhuan Jiang ◽  
Sainan Li ◽  
Tong Wang ◽  
Xiaoyuan Chi ◽  
Peishi Qi ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Quality ◽  
Rock Phosphate ◽  
Saline Soil ◽  
Phosphate Solubilizing Bacteria ◽  
Available N ◽  
Providencia Rettgeri ◽  
Treatment Groups ◽  
Combined Use ◽  
Phosphate Solubilizing

Soil salinity has adverse effects on soil microbial activity and nutrient cycles and therefore limits crop growth and yield. Amendments with halotolerant phosphate-solubilizing bacteria (PSB) and rock phosphate (RP) may improve properties of saline soil. In this study, we investigated the effects of RP either alone or in combination with PSB (Providencia rettgeri strain TPM23) on peanut growth and soil quality in a saline soil. With the combined application of RP and PSB, plant length and biomass (roots and shoots) and uptake of phosphorus (P), nitrogen (N), and potassium (K) increased significantly. Soil Na+ and Cl– contents decreased in the PR alone or PR combined with PSB treatment groups. There were strongly synergistic effects of RP and PSB on soil quality, including a decrease in pH. The soil available N, P, and K contents were significantly affected by the PSB treatments. In addition, the alkaline phosphomonoesterases, urease, and dehydrogenase activities increased significantly compared with the untreated group; highest alkaline phosphomonoesterases activity was observed in the RP and PSB treatment groups. The composition of rhizosphere soil bacterial communities was determined using 454-pyrosequencing of the 16S rRNA gene. In the PR alone or PR combined with PSB treatment groups, the structure of the soil bacterial community improved with increasing richness and diversity. With PSB inoculation, the relative abundance of Acidobacteria, Chloroflexi, and Planctomycetes increased. The three phyla were also positively correlated with soil available N and root dry weight. These results suggested microbiological mechanisms by which the combined use of RP and PSB improved saline soil and promoted plant growth. Overall, the study indicates the combined use of RP and PSB can be an economical and sustainable strategy to increase plant growth in P-deficient and salt-affected soils.

scholarly journals Initial growth of maize in response to application of rock phosphate, vermicompost and endophytic bacteria

Revista CERES ◽  
2012 ◽  
Vol 59 (2) ◽  
pp. 262-270 ◽  
Author(s):  
Lílian Estrela Borges Baldotto ◽  
Luiz Gonzaga Jr. Santos Silva ◽  
Luciano Pasqualoto Canellas ◽  
Fábio Lopes Olivares ◽  
Marihus Altoé Baldotto
Keyword(s):  
Endophytic Bacteria ◽  
Rock Phosphate ◽  
Energy Requirement ◽  
High Energy ◽  
Leaf Nitrogen ◽  
Initial Growth ◽  
Phosphate Solubilizing Bacteria ◽  
Nitrogen Fixing ◽  
Nitrogen And Phosphorus ◽  
Phosphate Solubilizing

Due to the high energy requirement and demand for non-renewable resources for the production of chemical fertilizers, added also to the environmental impact caused by the use of such products, it is important to intensify research on bio-based agricultural inputs. The use of nitrogen-fixing endophytic and phosphate solubilizing bacteria can provide these nutrients to the plants from the air and poorly soluble phosphorus sources, such as phosphate rock. The objective of this study was to evaluate the nutrition and initial growth of maize (Zea mays L.) in response to the inoculation of nitrogen-fixing and rock phosphate solubilizing endophytic bacteria, in single or mixed formulation, applied with vermicompost. The treatments containing bacteria, both diazotrophic and phosphate solubilizing, when compared to controls, showed higher levels of leaf nitrogen and phosphorus in maize, as well as higher growth characteristics. The application of vermicompost showed synergistic effect when combined with endophytic bacteria. Thus, the innovation of the combination of the studied factors may contribute to the early development of maize.

scholarly journals Sustainable Agriculture: Farmers’ Perspectives on Transition to Sustainable Agricultural Practices

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Paige Allen
Keyword(s):  
Sustainable Agriculture ◽  
Agricultural Production ◽  
Production Systems ◽  
Agricultural Practices ◽  
Sustainable Policy ◽  
Policies And Programs ◽  
Sustainable Agricultural Practices ◽  
Policy Discussion ◽  
Agricultural Production Systems

The role of sustainability in Canadian agricultural production systems is a complex and evolving topic. In 2018 Canada announced the launch of a five-year Canadian Agricultural Partnership which is a $3 billion funding initiative between the federal, provincial and territorial governments. Innovation and sustainability is one of the key elements of the initiative. The purpose of this research is to increase policy discussion in relation to sustainable agriculture through the engagement of farmers in Southern Ontario. This research will help improve the sustainable policies and programs by investigating farmers’ views on the inclusion and transition to sustainable farming practices, factors influencing farmers’ decisions to make the transition, as well as identifying deficits in current sustainable policy and programming in Ontario. It is essential to develop research which is representative of farmers’ viewpoints on as they are the stakeholders directly impacted by the policies and programs which are developed and enacted.

scholarly journals SORGHUM GENOTYPES RESPONSE TO INOCULATION WITH PHOSPHATE SOLUBILIZING BACTERIA

2020 ◽  
Vol 19 ◽  
pp. 14
Author(s):  
BIANCA BRAZ MATTOS ◽  
IVANILDO EVÓDIO MARRIEL ◽  
SYLVIA MORAIS DE SOUSA ◽  
UBIRACI GOMES DE PAULA LANA ◽  
ROBERT EUGENE SCHAFFERT ◽  
...  
Keyword(s):  
Field Experiments ◽  
Phosphate Solubilizing Bacteria ◽  
Promising Alternative ◽  
P Content ◽  
Synthetic Fertilizers ◽  
Sorghum Production ◽  
Sorghum Genotypes ◽  
Phosphate Solubilizing ◽  
Microbial Strain ◽  
P Supply

Sorghum bicolor adapts to phosphorus (P) deficient soils through mechanisms that contribute to its absorption and solubilization, including the association with microorganisms. The direct application of rock phosphate (RP) and the inoculation with phosphate solubilizing bacteria (PSB) is a sustainable alternative for P supply to the crops. The aim of this study was to evaluate the effect of PSB inoculation of two sorghum genotypes with different P responses (BR007 - efficient and responsive and SC283 - efficient and non-responsive), cultivated in soil fertilized with RP and triple superphosphate (TSP), in greenhouse and field experiments. The sorghum genotypes were inoculated separately with the Bacillus strains that are efficient in P solubilization, B116 and B70, and cultivated under different P fertilization sources (TSP, RP, ½TSP + ½RP). The results suggest that the inoculation response was dependent on sorghum genotype, P source and microbial strain. Inoculation of the genotype BR007 significantly increased root biomass and grain P content under greenhouse conditions, as well as yield and grain P content in field experiments, but no effect was observed on genotype SC283. The use of PSB as bioinoculants, in combination with RP, is a promising alternative to reduce the use of synthetic fertilizers, contributing to the sustainable sorghum production.

scholarly journals Ecological restoration of farmland: progress and prospects

2007 ◽  
Vol 363 (1492) ◽  
pp. 831-847 ◽  
Author(s):  
Mark R Wade ◽  
Geoff M Gurr ◽  
Steve D Wratten
Keyword(s):  
Land Use ◽  
Ecological Restoration ◽  
Agricultural Production ◽  
Financial Incentives ◽  
Agricultural Practices ◽  
External Costs ◽  
Mutual Benefit ◽  
Economic Returns ◽  
Ecological Principles ◽  
Sustainable Agricultural Practices

Sustainable agricultural practices in conjunction with ecological restoration methods can reduce the detrimental effects of agriculture. The Society for Ecological Restoration International has produced generic guidelines for conceiving, organizing, conducting and assessing ecological restoration projects. Additionally, there are now good conceptual frameworks, guidelines and practical methods for developing ecological restoration programmes that are based on sound ecological principles and supported by empirical evidence and modelling approaches. Restoration methods must also be technically achievable and socially acceptable and spread over a range of locations. It is important to reconcile differences between methods that favour conservation and those that favour economic returns, to ensure that conservation efforts are beneficial for both landowners and biodiversity. One option for this type of mutual benefit is the use of agri-environmental schemes to provide financial incentives to landholders in exchange for providing conservation services and other benefits. However, further work is required to define and measure the effectiveness of agri-environmental schemes. The broader potential for ecological restoration to improve the sustainability of agricultural production while conserving biodiversity in farmscapes and reducing external costs is high, but there is still much to learn, particularly for the most efficient use of agri-environmental schemes to change land use practice.

Peanut Endophytic Phosphate Solubilizing Bacteria Increase Growth and P Content of Soybean and Maize Plants

2021 ◽  
Vol 78 (5) ◽  
pp. 1961-1972
Author(s):  
Cinthia Tamara Lucero ◽  
Graciela Susana Lorda ◽  
María Soledad Anzuay ◽  
Liliana Mercedes Ludueña ◽  
Tania Taurian
Keyword(s):  
Phosphate Solubilizing Bacteria ◽  
P Content ◽  
Maize Plants ◽  
Phosphate Solubilizing
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