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Nithyapriya S, Sundaram L, Eswaran SUD, Perveen K, Alshaikh NA, Sayyed RZ, Mastinu A. Purification and Characterization of Desferrioxamine B of Pseudomonas fluorescens and Its Application to Improve Oil Content, Nutrient Uptake, and Plant Growth in Peanuts. MICROBIAL ECOLOGY 2024; 87:60. [PMID: 38630182 PMCID: PMC11024037 DOI: 10.1007/s00248-024-02377-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 04/06/2024] [Indexed: 04/19/2024]
Abstract
Microorganisms produce siderophores, which are low-molecular-weight iron chelators when iron availability is limited. The present analyzed the role of LNPF1 as multifarious PGPR for improving growth parameters and nutrient content in peanut and soil nutrients. Such multifarious PGPR strains can be used as effective bioinoculants for peanut farming. In this work, rhizosphere bacteria from Zea mays and Arachis hypogaea plants in the Salem area of Tamil Nadu, India, were isolated and tested for biochemical attributes and characteristics that stimulate plant growth, such as the production of hydrogen cyanide, ammonia (6 µg/mL), indole acetic acid (76.35 µg/mL), and solubilizing phosphate (520 µg/mL). The 16S rRNA gene sequences identified the isolate LNPF1 as Pseudomonas fluorescens with a similarity percentage of 99% with Pseudomonas sp. Isolate LNPF1 was evaluated for the production of siderophore. Siderophore-rich supernatant using a Sep Pack C18 column and Amberlite-400 Resin Column (λmax 264) produced 298 mg/L and 50 mg/L of siderophore, respectively. The characterization of purified siderophore by TLC, HPLC, FTIR, and 2D-NMR analysis identified the compound as desferrioxamine, a hydroxamate siderophore. A pot culture experiment determined the potential of LNPF1 to improve iron and oil content and photosynthetic pigments in Arachis hypogaea L. and improve soil nutrient content. Inoculation of A. hypogea seeds with LNPF1 improved plant growth parameters such as leaf length (60%), shoot length (22%), root length (54.68%), fresh weight (47.28%), dry weight (37%), and number of nuts (66.66) compared to the control (untreated seeds). This inoculation also improved leaf iron content (43.42), short iron content (38.38%), seed iron (46.72%), seed oil (31.68%), carotenoid (64.40%), and total chlorophyll content (98.%) compared to control (untreated seeds). Bacterized seeds showed a substantial increase in nodulation (61.65%) and weight of individual nodules (95.97) vis-à-vis control. The results of the present study indicated that P. fluorescens might be utilized as a potential bioinoculant to improve growth, iron content, oil content, number of nuts and nodules of Arachishypogaea L., and enrich soil nutrients.
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Affiliation(s)
- S Nithyapriya
- PG and Research Department of Botany, Padmavani Arts and Science College for Women, Salem, 636011, India
| | | | | | - Kahkashan Perveen
- Department of Botany and Microbiology, College of Science, King Saud University, PO Box -2455, 11451, Riyadh, Saudi Arabia
| | - Najla A Alshaikh
- Department of Botany and Microbiology, College of Science, King Saud University, PO Box -2455, 11451, Riyadh, Saudi Arabia
| | - R Z Sayyed
- Department of Microbiology, PSGVP Mandal's S I Patil Arts, G B Patel Science and STKV Sangh Commerce College, Shahada, 425409, India.
- Faculty of Health and Life Sciences, INTI International University, Negeri Sembilan, Persiaran Perdana BBN, Putra Nilai, 71800, Nilai, Malaysia.
| | - Andrea Mastinu
- Department of Molecular and Translational Medicine, Division of Pharmacology, University of Brescia, 25123, Brescia, Italy.
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Mnkandla SM, Mosoabisane MFT, Basopo N, Otomo PV. Mycofiltration of Aqueous Iron (III) and Imidacloprid Solutions, and the Effects of the Filtrates on Selected Biomarkers of the Freshwater Snail Helisoma duryi. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2024; 86:187-197. [PMID: 38329490 PMCID: PMC10904441 DOI: 10.1007/s00244-023-01049-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 12/23/2023] [Indexed: 02/09/2024]
Abstract
To alleviate the burden of water contamination, a newly developed form of bioremediation known as mycofiltration can be employed. Mycofiltration is an environment-friendly technology involving the treatment of contaminated water by passing it through a network of saprophytic fungal mycelium. A mycofilter made of Pleurotus ostreatus was used for the removal of iron (III) and imidacloprid from aqueous solutions. Batch mycofiltration, at a dosage of 1 g of mycofilter per 50 mL, was performed on iron (III) solutions of different concentrations (0.99, 10.7, 22.9, and 27.72 mg/L) and pH (3.3, 7 and 11). For column mycofiltration, the mycofilter was packed into pyrex columns (3.3 × 15 cm) to desired bed heights. Iron (III) and imidacloprid solutions of 18.99 mg/L and 234.70 ng/L, respectively, were filtered at a constant flow rate. Thereafter, Helisoma duryi snails were exposed for 96 h to the respective filtrates, and their catalase and acetylcholinesterase activities were assessed. Batch mycofiltration showed iron (III) removal rates as high as 85%. Column mycofiltration showed removal rates of 94 and 31% for iron (III) and imidacloprid, respectively. Catalase activity was significantly reduced (p < 0.05) in the snails exposed to iron (III) or imidacloprid filtrates, compared to the snails exposed to the non-mycofiltered media. A significantly higher acetylcholinesterase activity was induced by iron (III) filtrates in comparison with the non-mycofiltered media (p < 0.05). There were no significant differences in acetylcholinesterase activity (p > 0.05) in the snails exposed to mycofiltered and non-mycofiltered imidacloprid media. Mycofilter characterisation using Fourier Transform Infrared Spectrophotometry revealed significant changes in transmittance intensity in the mycofilters used for the iron (III) vs the ones used for the imidacloprid solutions. Mycofiltration was found to improve water quality although iron (III) was removed more effectively than imidacloprid.
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Affiliation(s)
- Sanele M Mnkandla
- Ecotoxicology Research Group, Department of Zoology and Entomology, Faculty of Natural and Agricultural Sciences, University of the Free State, Qwaqwa Campus, Private Bag x13, Phuthaditjhaba, 9866, South Africa.
- Ecotoxicology Research Group, Department of Applied Biology and Biochemistry, National University of Science and Technology, Bulawayo, Zimbabwe.
| | - Mafereka Francis Tyson Mosoabisane
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of the Free State, Qwaqwa Campus, Private Bag x13, Phuthaditjhaba, 9866, South Africa
- Radiochemistry, South African Nuclear Energy Corporation Limited, Brits, 0240, South Africa
| | - Norah Basopo
- Ecotoxicology Research Group, Department of Applied Biology and Biochemistry, National University of Science and Technology, Bulawayo, Zimbabwe
| | - Patricks Voua Otomo
- Ecotoxicology Research Group, Department of Zoology and Entomology, Faculty of Natural and Agricultural Sciences, University of the Free State, Qwaqwa Campus, Private Bag x13, Phuthaditjhaba, 9866, South Africa
- Afromontane Research Unit, University of the Free State, Private Bag x13, Phuthaditjhaba, 9866, Qwaqwa, South Africa
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Khazaal MT, Faraag AHI, Hamada MA, El-Hendawy HH. Characterization and Statistical Optimization of Enterobatin Synthesized by Escherichia coli OQ866153. Biochem Genet 2024:10.1007/s10528-023-10626-z. [PMID: 38245887 DOI: 10.1007/s10528-023-10626-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 12/07/2023] [Indexed: 01/23/2024]
Abstract
Microorganisms produce siderophores, which are secondary metabolites with a high affinity for iron. Siderophores have received significant attention due to their diverse applications in ecological and clinical research. In this study, siderophores production by Escherichia coli OQ866153 was optimized using two-stage statistical approach involving Plackett-Burman design (PBD) and response surface methodology (RSM) using central composite design (CCD). Out of 23 variables, succinate, tryptophan, Na2HPO4, CaCl2, agitation, and KH2PO4 were found to have the most significant effect on siderophores production in the first optimization stage with the highest SU% of 43.67%. In the second stage, RSM using CCD was utilized, and the optimal conditions were determined to be 0.3 g/l succinate, 0 g/l tryptophan, 6 g/l Na2HPO4, 0.1 g/l CaCl2, 150 RPM agitation, and 0.6 g/l KH2PO4, resulting in a maximum siderophore units (SU%) of 89.13%. The model was significant, as indicated by the model f-value of 314.14 (p-value = 0.0004) and coefficient of determination R2 of 0.9950. During validation experiments, the obtained maximum SU% was increased up to 87.1472%, which was two times as the value obtained under ordinary conditions (46.62%). The produced siderophores were purified and characterized using 1H, 13C NMR, IR spectroscopy. The obtained results indicated that the compound was enterobactin and entABCDEF genes were further detected in Escherichia coli OQ866153 extracted DNA. To our knowledge, this is the first report of statistical optimization for enterobactin synthesis by an E. coli strain isolated from a clinical source in Egypt.
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Affiliation(s)
- Mohamed T Khazaal
- Botany and Microbiology Department, Faculty of Science, Helwan University, Helwan, Cairo, 11795, Egypt
| | - Ahmed H I Faraag
- Botany and Microbiology Department, Faculty of Science, Helwan University, Helwan, Cairo, 11795, Egypt
| | - Marwa A Hamada
- Botany and Microbiology Department, Faculty of Science, Helwan University, Helwan, Cairo, 11795, Egypt
| | - Hoda H El-Hendawy
- Botany and Microbiology Department, Faculty of Science, Helwan University, Helwan, Cairo, 11795, Egypt.
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Neuhoff D, Neumann G, Weinmann M. Testing plant growth promoting microorganisms in the field - a proposal for standards. FRONTIERS IN PLANT SCIENCE 2024; 14:1324665. [PMID: 38293625 PMCID: PMC10824932 DOI: 10.3389/fpls.2023.1324665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 12/11/2023] [Indexed: 02/01/2024]
Abstract
In the European Union and worldwide there are a burgeoning markets for plant growth promoting microorganisms (PGPM) and other biological agents as soil improvers, bio-fertilizers, plant bio-stimulants, and biological control agents or bio-pesticides. Microbial agents have a major share in this development. The use of such products is often advertised with the promise of contributing to sustainable agricultural practices by increasing crop growth and yield and offering an alternative or substitute to decrease the dependency of agriculture on hazardeous agrochemicals. In contrast to registered microbial plant protection products, PGPM that are marketed in the EU as soil improvers or plant biostimulants, are not strictly required to have proven minimum efficacy levels under field conditions. Manufacturers only have to ensure that these products do not pose unacceptable risks to human, animal or plant health, safety or the environment. Uniform guidelines comparable to the EPPO - standards (European and Mediterranean Plant Protection Organisation) to test the efficacy in field trials are not available. This paper attempts to fill the gap. It proposes guidelines for PGPM field trial design and implementation, as well as recommendations for the type and scope of data collection and evaluation. Selected research papers from literature were evaluated to analyze, whether and to what extent the requirements are already met. The majority of the papers had a clear experimental design followed by proper data evaluation. Frequent deficiencies were the low number of tested environments and crop species, insufficient site and agronomic management description and missing data on soil humidity and temperature. Using the suggested standards is assumed to increase the expressive power of tested microbial products.
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Affiliation(s)
- Daniel Neuhoff
- Department Agroecology & Organic Farming, Institute of Crop Science and Resource Conservation, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | - Günter Neumann
- Department of Nutritional Crop Physiology (340h), Institute of Crop Science, University of Hohenheim, Stuttgart, Germany
| | - Markus Weinmann
- Department of Nutritional Crop Physiology (340h), Institute of Crop Science, University of Hohenheim, Stuttgart, Germany
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Soares CRFS, Hernández AG, da Silva EP, de Souza JEA, Bonfim DF, Zabot GL, Ferreira PAA, Brunetto G. Applications and Market of Micro-Organism-Based and Plant-Based Inputs in Brazilian Agriculture. PLANTS (BASEL, SWITZERLAND) 2023; 12:3844. [PMID: 38005741 PMCID: PMC10675046 DOI: 10.3390/plants12223844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/22/2023] [Accepted: 10/30/2023] [Indexed: 11/26/2023]
Abstract
The use of plant-based and micro-organism-based biological inputs is a sustainable agricultural practice. It promotes a suitable and better utilization of non-renewable resources in the environment. The benefits of using micro-organisms are associated with direct and indirect mechanisms, mainly related to improvements in the absorption and availability of nutrients, resulting in a consequent impact on plant growth. The main benefits of using biochemical pesticides are the promotion of sustainability and the management of resistance to pests and diseases. Although the use of micro-organisms and botanical metabolites is a promising agricultural alternative, they are still primarily concentrated in grain crops. There is a huge opportunity to expand the plant-based and micro-organism-based biological inputs used in agriculture due to the wide range of mechanisms of action of those products. At a global level, several terminologies have been adopted to characterize biological inputs, but many terms used conflict with Brazilian legislation. This review will clarify the classes of biological inputs existing in Brazil as well as present the application and evolution of the market for microbiological and plant-based inputs.
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Affiliation(s)
- Cláudio Roberto Fonsêca Sousa Soares
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Imunologia e Parasitologia, Campus Universitário Reitor João David Ferreira Lima, Trindade, Florianópolis 88040-900, SC, Brazil; (A.G.H.); (E.P.d.S.)
| | - Anabel González Hernández
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Imunologia e Parasitologia, Campus Universitário Reitor João David Ferreira Lima, Trindade, Florianópolis 88040-900, SC, Brazil; (A.G.H.); (E.P.d.S.)
| | - Emanuela Pille da Silva
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Imunologia e Parasitologia, Campus Universitário Reitor João David Ferreira Lima, Trindade, Florianópolis 88040-900, SC, Brazil; (A.G.H.); (E.P.d.S.)
| | | | - Danyella Fernandes Bonfim
- Agricultural Engineer, SHIN CA 9, Lt 13-15, Ed. Porto do Lago, Lago Norte, Brasília 71503-509, DF, Brazil;
| | - Giovani Leone Zabot
- Coordenação Acadêmica, Universidade Federal de Santa Maria, Campus Cachoeira do Sul, Cachoeira do Sul 96521-000, RS, Brazil; (G.L.Z.); (P.A.A.F.)
| | - Paulo Ademar Avelar Ferreira
- Coordenação Acadêmica, Universidade Federal de Santa Maria, Campus Cachoeira do Sul, Cachoeira do Sul 96521-000, RS, Brazil; (G.L.Z.); (P.A.A.F.)
| | - Gustavo Brunetto
- Departamento de Ciência do Solo, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil;
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Al-Turki A, Murali M, Omar AF, Rehan M, Sayyed R. Recent advances in PGPR-mediated resilience toward interactive effects of drought and salt stress in plants. Front Microbiol 2023; 14:1214845. [PMID: 37829451 PMCID: PMC10565232 DOI: 10.3389/fmicb.2023.1214845] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 09/07/2023] [Indexed: 10/14/2023] Open
Abstract
The present crisis at hand revolves around the need to enhance plant resilience to various environmental stresses, including abiotic and biotic stresses, to ensure sustainable agriculture and mitigate the impact of climate change on crop production. One such promising approach is the utilization of plant growth-promoting rhizobacteria (PGPR) to mediate plant resilience to these stresses. Plants are constantly exposed to various stress factors, such as drought, salinity, pathogens, and nutrient deficiencies, which can significantly reduce crop yield and quality. The PGPR are beneficial microbes that reside in the rhizosphere of plants and have been shown to positively influence plant growth and stress tolerance through various mechanisms, including nutrient solubilization, phytohormone production, and induction of systemic resistance. The review comprehensively examines the various mechanisms through which PGPR promotes plant resilience, including nutrient acquisition, hormonal regulation, and defense induction, focusing on recent research findings. The advancements made in the field of PGPR-mediated resilience through multi-omics approaches (viz., genomics, transcriptomics, proteomics, and metabolomics) to unravel the intricate interactions between PGPR and plants have been discussed including their molecular pathways involved in stress tolerance. Besides, the review also emphasizes the importance of continued research and implementation of PGPR-based strategies to address the pressing challenges facing global food security including commercialization of PGPR-based bio-formulations for sustainable agricultural.
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Affiliation(s)
- Ahmad Al-Turki
- Department of Plant Production and Protection, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia
| | - M. Murali
- Department of Studies in Botany, University of Mysore, Mysore, India
| | - Ayman F. Omar
- Department of Plant Production and Protection, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia
- Department of Plant Pathology, Plant Pathology, and Biotechnology Lab. and EPCRS Excellence Center, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh, Egypt
| | - Medhat Rehan
- Department of Plant Production and Protection, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia
- Department of Genetics, College of Agriculture, Kafrelsheikh University, Kafr El-Sheikh, Egypt
| | - R.Z. Sayyed
- Department of Microbiology, PSGVP Mandal’s S I Patil Arts, G B Patel Science and STKV Sangh Commerce College, Shahada, India
- Faculty of Health and Life Sciences, INTI International University, Nilai, Negeri Sembilan, Malaysia
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Ratnaningsih HR, Noviana Z, Dewi TK, Loekito S, Wiyono S, Gafur A, Antonius S. IAA and ACC deaminase producing-bacteria isolated from the rhizosphere of pineapple plants grown under different abiotic and biotic stresses. Heliyon 2023; 9:e16306. [PMID: 37292365 PMCID: PMC10245151 DOI: 10.1016/j.heliyon.2023.e16306] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 04/28/2023] [Accepted: 05/12/2023] [Indexed: 06/10/2023] Open
Abstract
The roles of plant growth-promoting rhizobacteria in promoting plant growth and soil health, including alteration in plant metabolism and production of phytohormones such as indole-3-acetic acid (IAA) and the enzyme 1-aminocyclopropane-1-carboxylate (ACC) deaminase, are indisputable. This study aimed to isolate and characterize beneficial bacteria isolated from the rhizosphere of pineapple from distinct stress-inducing habitats, including water excess-, herbicide-over-treated-, and pathogen-infected areas at PT Great Giant Foods located in Lampung, Indonesia. The isolated bacteria were screened based on IAA production and ACC deaminase activities. Six selected isolates produced IAA with concentrations of up to 36.93 mgL-1. The highest value belongs to Bacillus sp. NCTB5I, followed by Brevundimonas sp. CHTB 2C (13.13 mgL-1) and Pseudomonas sp. CHTB 5B (6.65 mgL-1). All isolates were detected with ACC deaminase activities with Brevundimonas sp. CHTJ 5H consuming 88% of ACC over 24 h, the highest among all. Brevundimonas sp. CHTB 2C was detected with the highest ACC deaminase activity with the value of 13,370 nm α-ketobutyrate mg-1h-1. In another experiment, it was revealed that all selected isolates promote soybean growth. These bacteria are potential to be developed in the future as bioagents to promote plant growth, especially under stressful environmental conditions.
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Affiliation(s)
- Hanim R. Ratnaningsih
- Department of Soil Science and Land Resources, Faculty of Agriculture, IPB University, Bogor 16680, Indonesia
| | - Zahra Noviana
- Research Center for Applied Microbiology, National Research and Innovation Agency (BRIN), Cibinong 16911, Indonesia
| | - Tirta Kumala Dewi
- Research Center for Applied Microbiology, National Research and Innovation Agency (BRIN), Cibinong 16911, Indonesia
| | - Supriyono Loekito
- Research and Development Department, PT Great Giant Pineapple, Lampung Tengah 34163, Indonesia
| | - Suryo Wiyono
- Department of Plant Protection, Faculty of Agriculture, IPB University, Bogor 16680, Indonesia
| | - Abdul Gafur
- Sinarmas Forestry Corporate Research and Development, Perawang 28772, Indonesia
| | - Sarjiya Antonius
- Research Center for Applied Microbiology, National Research and Innovation Agency (BRIN), Cibinong 16911, Indonesia
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Ferioun M, bouhraoua S, Srhiouar N, Tirry N, Belahcen D, Siang TC, Louahlia S, El Ghachtouli N. Optimized drought tolerance in barley (Hordeum vulgare L.) using plant growth-promoting rhizobacteria (PGPR). BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2023. [DOI: 10.1016/j.bcab.2023.102691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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