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Serafim B, Bernardino AR, Freitas F, Torres CAV. Recent Developments in the Biological Activities, Bioproduction, and Applications of Pseudomonas spp. Phenazines. Molecules 2023; 28:molecules28031368. [PMID: 36771036 PMCID: PMC9919295 DOI: 10.3390/molecules28031368] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 01/20/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023] Open
Abstract
Phenazines are a large group of heterocyclic nitrogen-containing compounds with demonstrated insecticidal, antimicrobial, antiparasitic, and anticancer activities. These natural compounds are synthesized by several microorganisms originating from diverse habitats, including marine and terrestrial sources. The most well-studied producers belong to the Pseudomonas genus, which has been extensively investigated over the years for its ability to synthesize phenazines. This review is focused on the research performed on pseudomonads' phenazines in recent years. Their biosynthetic pathways, mechanism of regulation, production processes, bioactivities, and applications are revised in this manuscript.
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Affiliation(s)
- Bruno Serafim
- Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
| | - Ana R. Bernardino
- Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
| | - Filomena Freitas
- Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
| | - Cristiana A. V. Torres
- Laboratory i4HB—Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, School of Science and Technology, NOVA University Lisbon, 2825-149 Caparica, Portugal
- Correspondence:
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Firdu Z, Maia L, Teodoro J, Alemu T, Assefa F. Characterization of faba bean (Vicia faba L.) rhizosphere associating rhizobacteria against Botrytis fabae AAUBF-12 and their plant growth-promoting properties. Heliyon 2022; 8:e08861. [PMID: 35146167 PMCID: PMC8816674 DOI: 10.1016/j.heliyon.2022.e08861] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 08/25/2021] [Accepted: 01/25/2022] [Indexed: 12/19/2022] Open
Abstract
The rhizobacteria are known to protect plants from different pathogens acting as biocontrol agents and promote growth of plants. This study was conducted to isolate, screen and identify faba bean associating rhizobacteria for their antagonistic properties against Botrytis fabae AAUBF-12 and plant growth-promoting properties under in vitro conditions. In the dual culture assay, the isolates inhibited the mycelia growth of B. fabae AAUBF-12 (6–40 %) upon 3 days of incubation, and the inhibition increased to 9–43 %, 16–50 %, and 24–68 % after five, seven and 9 days of incubation, respectively. The inhibitory activity increased from 6 to 82 % using the culture filtrates of the isolates. Isolate AAUB95 displayed the highest mycelial inhibition (27 %) at 5 % concentration of culture filtrate, followed by AAUB146b that exhibited 21 % inhibition at the same concentration. AAUB146b and AAUB100 effectively inhibited B. fabae AAUBF-12 by 79 % and 80 % at 20 % concentrations of the culture filtrate. The qualitative study demonstrated 75 % of the isolates positive for protease and 60 % for lipase synthesis. Furthermore, the isolates that showed antagonistic activity against B. fabae AAUBF-12, produced IAA and ammonia with 65 % and 60 %, respectively. Moreover, 310–760 μg mL−1 and 200–620 μg mL−1 of tricalcium phosphate (TCP) was released on the 3rd and 6th days of incubation, respectively, due to rhizobacterial solubilization. Nevertheless, the Pearson's correlation analysis between pH and TCP solubilization revealed an inverse relationship (r = -.422∗∗). Based on 16S rRNA sequences analysis, isolate AAUB95, AAUB146b, AAUB100 and AAUB92 were identified as B. subtilis AAUB95, S. nematodiphila AAUB146b, B. tequilensis AAUB100 and B. subtilis AAUB92, respectively. Of the isolates, B. subtilis AAUB95 showed best antagonism of B. fabae AAUBF-12 with multiple plant growth-promoting properties.
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Affiliation(s)
- Zewdineh Firdu
- Department of Microbial, Cellular and Molecular Biology, Addis Ababa University, P.O. Box, 1176, Addis Ababa, Ethiopia
- Corresponding author.
| | - Larissa Maia
- Department of Phytopathology, Federal University of Lavras, Lavras, P.O. Box, 3037, Minas Gerais, Brazil
| | - Jorge Teodoro
- Department of Phytopathology, Federal University of Lavras, Lavras, P.O. Box, 3037, Minas Gerais, Brazil
| | - Tesfaye Alemu
- Department of Microbial, Cellular and Molecular Biology, Addis Ababa University, P.O. Box, 1176, Addis Ababa, Ethiopia
| | - Fassil Assefa
- Department of Microbial, Cellular and Molecular Biology, Addis Ababa University, P.O. Box, 1176, Addis Ababa, Ethiopia
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Roca-Couso R, Flores-Félix JD, Rivas R. Mechanisms of Action of Microbial Biocontrol Agents against Botrytis cinerea. J Fungi (Basel) 2021; 7:1045. [PMID: 34947027 PMCID: PMC8707566 DOI: 10.3390/jof7121045] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 11/29/2021] [Accepted: 12/04/2021] [Indexed: 01/20/2023] Open
Abstract
Botrytis cinerea is a phytopathogenic fungus responsible for economic losses from USD 10 to 100 billion worldwide. It affects more than 1400 plant species, thus becoming one of the main threats to the agriculture systems. The application of fungicides has for years been an efficient way to control this disease. However, fungicides have negative environmental consequences that have changed popular opinion and clarified the need for more sustainable solutions. Biopesticides are products formulated based on microorganisms (bacteria or fungi) with antifungal activity through various mechanisms. This review gathers the most important mechanisms of antifungal activities and the microorganisms that possess them. Among the different modes of action, there are included the production of diffusible molecules, both antimicrobial molecules and siderophores; production of volatile organic compounds; production of hydrolytic enzymes; and other mechanisms, such as the competition and induction of systemic resistance, triggering an interaction at different levels and inhibition based on complex systems for the production of molecules and regulation of crop biology. Such a variety of mechanisms results in a powerful weapon against B. cinerea; some of them have been tested and are already used in the agricultural production with satisfactory results.
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Affiliation(s)
- Rocío Roca-Couso
- Department of Microbiology and Genetics, Edificio Departamental de Biología, University of Salamanca, 37007 Salamanca, Spain;
- Institute for Agribiotechnology Research (CIALE), 37185 Salamanca, Spain
| | - José David Flores-Félix
- CICS-UBI–Health Sciences Research Centre, University of Beira Interior, 6201-506 Covilhã, Portugal
| | - Raúl Rivas
- Department of Microbiology and Genetics, Edificio Departamental de Biología, University of Salamanca, 37007 Salamanca, Spain;
- Institute for Agribiotechnology Research (CIALE), 37185 Salamanca, Spain
- Associated Unit, University of Salamanca-CSIC (IRNASA), 37008 Salamanca, Spain
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Drobek M, Cybulska J, Gałązka A, Feledyn-Szewczyk B, Marzec-Grządziel A, Sas-Paszt L, Gryta A, Trzciński P, Zdunek A, Frąc M. The Use of Interactions Between Microorganisms in Strawberry Cultivation ( Fragaria x ananassa Duch.). FRONTIERS IN PLANT SCIENCE 2021; 12:780099. [PMID: 34917112 PMCID: PMC8668414 DOI: 10.3389/fpls.2021.780099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 11/04/2021] [Indexed: 06/14/2023]
Abstract
As the market indicates a growing interest in organically grown fruit, there is a need for biostimulants to counter the adverse effects of pathogenic fungi and fungal-like-pathogens. Four microbial pathogens (Botrytis cinerea, Verticillium sp., Phytophthora sp., and Colletotrichum sp.) which are the most often causes of strawberry diseases were selected. Five kinds of biostimulants (C1, C2, C3, C4, and C5) containing bacterial consortia were developed to combat the pathogens. The antagonistic effect of selected microorganisms against strawberry pathogens was observed. The effectiveness of various beneficial bacteria in combating fungal pathogens of cv. Honeoye strawberries was compared and the impact of their activity on fruit quality was assessed. The most significant effect on the strawberry firmness was found for the C2 consortium, which provided the strawberries infected with the pathogens group (MIX: B. cinerea, Verticillium sp., Phytophthora sp., and Colletotrichum sp.) with a 140% increase in maximum load in a puncture test compared to the positive control (C0). Strawberries contaminated with Phytophthora sp. after the application of Consortium C4 (C4) showed the largest increase (127%) in soluble solid content (SSC) when compared to the C0. Fruit contaminated with Colletotrichum sp. and B. cinerea after the application of C2 and Consortium 5 (C5), respectively, had the highest levels of anthocyanins and total phenolic content, when compared to C0. The largest increase, which reached as high as 25%, in D-galacturonic acid content was observed for the group of pathogens after Consortium 1 (C1) application. The extraction of strawberry pectin allowed for the study of the rheological properties of pectin solutions; on this basis, strawberry pectin from the control (NC) was distinguished as it showed the highest viscosity (0.137-0.415 Pas). Taking into account the individual effects of bacteria on strawberry pathogenic fungi and fungal-like-pathogens, it is possible to reduce the adverse effects of fungal disease and to improve the properties of strawberries by selecting the appropriate bacterial consortium. Interactions between microorganisms are often complex and not fully understood, which suggests the need for further research in this direction.
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Affiliation(s)
- Magdalena Drobek
- Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland
| | - Justyna Cybulska
- Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland
| | - Anna Gałązka
- The Institute of Soil Science and Plant Cultivation (IUNG)–State Research Institute, Puławy, Poland
| | - Beata Feledyn-Szewczyk
- The Institute of Soil Science and Plant Cultivation (IUNG)–State Research Institute, Puławy, Poland
| | - Anna Marzec-Grządziel
- The Institute of Soil Science and Plant Cultivation (IUNG)–State Research Institute, Puławy, Poland
| | - Lidia Sas-Paszt
- National Institute of Horticultural Research, Skierniewice, Poland
| | - Agata Gryta
- Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland
| | - Paweł Trzciński
- National Institute of Horticultural Research, Skierniewice, Poland
| | - Artur Zdunek
- Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland
| | - Magdalena Frąc
- Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland
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Pylak M, Oszust K, Frąc M. Searching for New Beneficial Bacterial Isolates of Wild Raspberries for Biocontrol of Phytopathogens-Antagonistic Properties and Functional Characterization. Int J Mol Sci 2020; 21:ijms21249361. [PMID: 33302568 PMCID: PMC7763744 DOI: 10.3390/ijms21249361] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 12/03/2020] [Accepted: 12/06/2020] [Indexed: 12/13/2022] Open
Abstract
The threat caused by plants fungal and fungal-like pathogens is a serious problem in the organic farming of soft fruits. The European Commission regulations prohibit some commercially available chemical plant protection products, and instead recommend the use of natural methods for improving the microbial soil status and thus increasing resistance to biotic stresses caused by phytopathogens. The solution to this problem may be biopreparations based on, e.g., bacteria, especially those isolated from native local environments. To select proper bacterial candidates for biopreparation, research was provided to preliminarily ensure that those isolates are able not only to inhibit the growth of pathogens, but also to be metabolically effective. In the presented research sixty-five isolates were acquired and identified. Potentially pathogenic isolates were excluded from further research, and beneficial bacterial isolates were tested against the following plant pathogens: Botrytis spp., Colletotrichum spp., Phytophthora spp., and Verticillium spp. The eight most effective antagonists belonging to Arthrobacter, Bacillus, Pseudomonas, and Rhodococcus genera were subjected to metabolic and enzymatic analyses and a resistance to chemical stress survey, indicating to their potential as components of biopreparations for agroecology.
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Yaashikaa P, Kumar PS, Varjani S, Tamilselvi S, Saravanan A. Formulation and combinatorial effect of Pseudomonas fluorescens and Bacillus coagulans as biocontrol agents. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Dagher F, Olishevska S, Philion V, Zheng J, Déziel E. Development of a novel biological control agent targeting the phytopathogen Erwinia amylovora. Heliyon 2020; 6:e05222. [PMID: 33102848 PMCID: PMC7578203 DOI: 10.1016/j.heliyon.2020.e05222] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 03/18/2020] [Accepted: 10/08/2020] [Indexed: 10/27/2022] Open
Abstract
Antibiotics are used extensively to control animal, plant, and human pathogens. They are sprayed on apple and pear orchards to control the bacterium Erwinia amylovora, the causative agent of fire blight. This phytopathogen is developing antibiotic resistance and alternatives either have less efficacy, are phytotoxic, or more management intensive. The objective of our study was to develop an effective biological control agent colonizing the host plant and competing with Erwinia amylovora. It must not be phytotoxic, have a wide spectrum of activity, and be unlikely to induce resistance in the pathogen. To this end, several bacterial isolates from various environmental samples were screened to identify suitable candidates that are antagonistic to E. amylovora. We sampled bacteria from the flowers, leaves, and soil from apple and pear orchards from the springtime bloom period until the summer. The most effective bacteria, including isolates of Pseudomonas poae, Paenibacillus polymyxa, Bacillus amyloliquefaciens and Pantoea agglomerans, were tested in vitro and in vivo and formulated into products containing both the live strains and their metabolites that were stable for at least 9 months. Trees treated with the product based on P. agglomerans NY60 had significantly less fire blight than the untreated control and were statistically not different from streptomycin-treated control trees. With P. agglomerans NY60, fire blight never extended beyond the central vein of the inoculated leaf. The fire blight median disease severity score, 10 days after inoculation, was up to 70% less severe on trees treated with P. agglomerans NY60 as compared to untreated controls.
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Affiliation(s)
- Fadi Dagher
- INRS-Armand-Frappier Santé Biotechnologie, Laval, Québec, Canada
| | | | | | - Jie Zheng
- US Food and Drug Administration Regulatory Science Center for Food Safety and Applied Nutrition, 5100, Paint Branch Parkway, College Park, MD, USA
| | - Eric Déziel
- INRS-Armand-Frappier Santé Biotechnologie, Laval, Québec, Canada
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8
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Ruiz-Moyano S, Hernández A, Galvan AI, Córdoba MG, Casquete R, Serradilla MJ, Martín A. Selection and application of antifungal VOCs-producing yeasts as biocontrol agents of grey mould in fruits. Food Microbiol 2020; 92:103556. [PMID: 32950150 DOI: 10.1016/j.fm.2020.103556] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 05/16/2020] [Accepted: 06/01/2020] [Indexed: 12/28/2022]
Abstract
Rotting caused by grey mould (Botrytis cinerea) is a concerning disease for numerous crops both pre- and postharvest stages. Application of antagonistic yeasts is a promising strategy for controlling grey mould incidence which could mitigate undesirable consequences of using synthetic fungicides. In this work, a screening for detection of yeasts isolated from figs producers of antifungal volatile organic compounds (VOCs) were performed by confrontation in double dishes systems. Eleven out of 34 yeasts confronted reduced B. cinerea growth parameter in vitro. This reduction was correlated (p ≤ 0.050) with the production of 10 volatile compounds: two acids (acetic acid and octanoic acid), 7 esters (Ethyl propionate, n-Propyl acetate, Isobutyl acetate, 2-methylbutyl acetate, furfuryl acetate, phenylmethyl acetate, 2-phenylethyl acetate) and one ketone (Heptan-2-one). In bases on in vitro assay, Hanseniaspora uvarum 793 was applied to in vivo assays with strawberries and cherries. The reduction of incidence of B. cinerea in strawberries at 7 °C and 25 °C was 54.9 and 72.1% after 6 and 3 days, respectively. The reduction of incidence of B. cinerea in cherries at 7 °C and 25 °C was 48.9 and 45.6% after 5 and 4 days, respectively. These results showed that VOCs produced by Hanseniaspora uvarum 793 are effective in the control of incidence of Botrytis cinerea in fruits, being a potential alternative to chemical fungicide.
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Affiliation(s)
- Santiago Ruiz-Moyano
- Nutrición y Bromatología, Escuela de Ingenierías Agrarias, Instituto Universitario de Recursos Agrarios (INURA), Universidad de Extremadura, Ctra. de Cáceres s/n, 06007, Badajoz, Spain
| | - Alejandro Hernández
- Nutrición y Bromatología, Escuela de Ingenierías Agrarias, Instituto Universitario de Recursos Agrarios (INURA), Universidad de Extremadura, Ctra. de Cáceres s/n, 06007, Badajoz, Spain.
| | - Ana I Galvan
- Área de Hortofruticultura, Centro de Investigaciones Finca La Orden-Valdesequera (CICYTEX), Autovía Madrid-Lisboa, s/n, 060187, Guadajira, Spain
| | - María G Córdoba
- Nutrición y Bromatología, Escuela de Ingenierías Agrarias, Instituto Universitario de Recursos Agrarios (INURA), Universidad de Extremadura, Ctra. de Cáceres s/n, 06007, Badajoz, Spain
| | - Rocio Casquete
- Nutrición y Bromatología, Escuela de Ingenierías Agrarias, Instituto Universitario de Recursos Agrarios (INURA), Universidad de Extremadura, Ctra. de Cáceres s/n, 06007, Badajoz, Spain
| | - Manuel J Serradilla
- Área de Vegetales, Instituto Tecnológico Agroalimentario de Extremadura (INTAEX), Centro de Investigaciones Científicas y Tecnológicas de Extremadura (CICYTEX), Avenida Adolfo Suárez s/n, 06007, Badajoz, Spain
| | - Alberto Martín
- Nutrición y Bromatología, Escuela de Ingenierías Agrarias, Instituto Universitario de Recursos Agrarios (INURA), Universidad de Extremadura, Ctra. de Cáceres s/n, 06007, Badajoz, Spain
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Myo EM, Maung CEH, Mya KM, Khai AA. Characterization of bacterial endophytes from Myanmar medicinal plants for antimicrobial activity against human and plant pathogens. BRAZ J PHARM SCI 2020. [DOI: 10.1590/s2175-97902019000317705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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10
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Bajpai A, Singh B, Joshi S, Johri BN. Production and Characterization of an Antifungal Compound from Pseudomonas protegens Strain W45. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s40011-017-0844-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Klein MN, da Silva AC, Kupper KC. Bacillus subtilis based-formulation for the control of postbloom fruit drop of citrus. World J Microbiol Biotechnol 2016; 32:205. [PMID: 27804104 DOI: 10.1007/s11274-016-2157-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 10/07/2016] [Indexed: 11/24/2022]
Abstract
Postbloom fruit drop (PFD) caused by Colletotrichum acutatum affects flowers and causes early fruit drop in all commercial varieties of citrus. Biological control with the isolate ACB-69 of Bacillus subtilis has been considered as a potential method for controlling this disease. This study aimed to develop and optimize a B. subtilis based-formulation with a potential for large-scale applications and evaluate its effect on C. acutatum in vitro and in vivo. Bacillus subtilis based-formulations were developed using different carrier materials, and their ability to control PFD was evaluated. The results of the assays led to the selection of the B. subtilis based-formulation with talc + urea (0.02 %) and talc + ammonium molybdate (1 mM), which inhibited mycelial growth and germination of C. acutatum. Studies with detached citrus flowers showed that the formulations were effective in controlling the pathogen. In field conditions, talc + urea (0.02 %) provided 73 % asymptomatic citrus flowers and 56 % of the average number of effective fruit (ANEF), equating with fungicide treatment. On the contrary, non-treated trees had 8.8 % of asymptomatic citrus flowers and 0.83 % ANEF. The results suggest that B. subtilis based-formulations with talc as the carrier supplemented with a nitrogen source had a high potential for PFD control.
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Affiliation(s)
- Mariana Nadjara Klein
- Agroecology and Rural Development Program, Postgraduate School, Universidade Federal de São Carlos, Araras, SP, CEP 13600-970, Brazil
| | - Aline Caroline da Silva
- Agroecology and Rural Development Program, Postgraduate School, Universidade Federal de São Carlos, Araras, SP, CEP 13600-970, Brazil
| | - Katia Cristina Kupper
- Laboratory of Plant Pathology and Biological Control, Centro de Citricultura "Sylvio Moreira"/IAC, Cordeirópolis, SP, CEP 13490-970, Brazil.
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Shternshis MV, Belyaev AA, Shpatova TV, Lelyak AA. Influence of Bacillus spp. on strawberry gray-mold causing agent and host plant resistance to disease. CONTEMP PROBL ECOL+ 2015. [DOI: 10.1134/s1995425515030130] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Vyas P, Rahi P, Chadha BS, Gulati A. Statistical Optimization of Medium Components for Mass Production of Plant Growth-Promoting Microbial Inoculant Pseudomonas trivialis BIHB 745 (MTCC5336). Indian J Microbiol 2013; 54:239-41. [PMID: 25320429 DOI: 10.1007/s12088-013-0425-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 08/04/2013] [Indexed: 11/29/2022] Open
Abstract
Optimizing nutritional requirements for mass production of microbial inoculants in shortened time has relevance for their economical field application. Therefore, the present study aimed at selecting suitable growth medium, optimizing its components, and up-scaling inoculum production for plant growth-promoting Pseudomonas trivialis BIHB 745. Of the different media tested, the culture exhibited maximal viable colony count in trypticase soya broth with 17.6 % increased biomass on optimizing levels of carbon source, nitrogen source, and NaCl using response surface methodology. A twofold higher biomass with 9 h shorter incubation period was obtained in optimized medium in a bioreactor in comparison to shake flasks.
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Affiliation(s)
- Pratibha Vyas
- Plant Pathology and Microbiology Laboratory, CSIR-Institute of Himalayan Bioresource Technology, P.O. Box No. 6, Palampur, 176 061 Himachal Pradesh India
| | - Praveen Rahi
- Plant Pathology and Microbiology Laboratory, CSIR-Institute of Himalayan Bioresource Technology, P.O. Box No. 6, Palampur, 176 061 Himachal Pradesh India
| | - B S Chadha
- Microbiology Department, Guru Nanak Dev University, Amritsar, 143 005 Punjab India
| | - Arvind Gulati
- Plant Pathology and Microbiology Laboratory, CSIR-Institute of Himalayan Bioresource Technology, P.O. Box No. 6, Palampur, 176 061 Himachal Pradesh India
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