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Greipel E, Nagy K, Csákvári E, Dér L, Galajda P, Kutasi J. Chemotactic Interactions of Scenedesmus sp. and Azospirillum brasilense Investigated by Microfluidic Methods. Microb Ecol 2024; 87:52. [PMID: 38498218 PMCID: PMC10948495 DOI: 10.1007/s00248-024-02366-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 03/08/2024] [Indexed: 03/20/2024]
Abstract
The use of algae for industrial, biotechnological, and agricultural purposes is spreading globally. Scenedesmus species can play an essential role in the food industry and agriculture due to their favorable nutrient content and plant-stimulating properties. Previous research and the development of Scenedesmus-based foliar fertilizers raised several questions about the effectiveness of large-scale algal cultivation and the potential effects of algae on associative rhizobacteria. In the microbiological practice applied in agriculture, bacteria from the genus Azospirillum are one of the most studied plant growth-promoting, associative, nitrogen-fixing bacteria. Co-cultivation with Azospirillum species may be a new way of optimizing Scenedesmus culturing, but the functioning of the co-culture system still needs to be fully understood. It is known that Azospirillum brasilense can produce indole-3-acetic acid, which could stimulate algae growth as a plant hormone. However, the effect of microalgae on Azospirillum bacteria is unclear. In this study, we investigated the behavior of Azospirillum brasilense bacteria in the vicinity of Scenedesmus sp. or its supernatant using a microfluidic device consisting of physically separated but chemically coupled microchambers. Following the spatial distribution of bacteria within the device, we detected a positive chemotactic response toward the microalgae culture. To identify the metabolites responsible for this behavior, we tested the chemoeffector potential of citric acid and oxaloacetic acid, which, according to our HPLC analysis, were present in the algae supernatant in 0.074 mg/ml and 0.116 mg/ml concentrations, respectively. We found that oxaloacetic acid acts as a chemoattractant for Azospirillum brasilense.
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Affiliation(s)
- Erika Greipel
- Albitech Biotechnological Ltd, Berlini Út 47-49, 1045, Budapest, Hungary
- Department of Plant Anatomy, ELTE Eötvös Loránd University, Pázmány Péter Stny 1/C, H-1117, Budapest, Hungary
| | - Krisztina Nagy
- Institute of Biophysics, HUN-REN Biological Research Centre, Szeged, Temesvári Krt. 62, 6726, Szeged, Hungary.
| | - Eszter Csákvári
- Institute of Biophysics, HUN-REN Biological Research Centre, Szeged, Temesvári Krt. 62, 6726, Szeged, Hungary
- Division for Biotechnology, Bay Zoltán Nonprofit Ltd. for Applied Research, Derkovits Fasor 2, 6726, Szeged, Hungary
| | - László Dér
- Institute of Biophysics, HUN-REN Biological Research Centre, Szeged, Temesvári Krt. 62, 6726, Szeged, Hungary
| | - Peter Galajda
- Institute of Biophysics, HUN-REN Biological Research Centre, Szeged, Temesvári Krt. 62, 6726, Szeged, Hungary
| | - József Kutasi
- Albitech Biotechnological Ltd, Berlini Út 47-49, 1045, Budapest, Hungary
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Garciglia-Mercado C, Contreras CA, Choix FJ, de-Bashan LE, Gómez-Anduro GA, Palacios OA. Metabolic and physiological adaptations of microalgal growth-promoting bacterium Azospirillum brasilense growing under biogas atmosphere: a microarray-based transcriptome analysis. Arch Microbiol 2024; 206:173. [PMID: 38492040 DOI: 10.1007/s00203-024-03890-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/30/2024] [Accepted: 02/08/2024] [Indexed: 03/18/2024]
Abstract
Using microalgal growth-promoting bacteria (MGPB) to improve the cultured microalga metabolism during biotechnological processes is one of the most promising strategies to enhance their benefits. Nonetheless, the culture condition effect used during the biotechnological process on MGPB growth and metabolism is key to ensure the expected positive bacterium growth and metabolism of microalgae. In this sense, the present research study investigated the effect of the synthetic biogas atmosphere (75% CH4-25% CO2) on metabolic and physiological adaptations of the MGPB Azospirillum brasilense by a microarray-based transcriptome approach. A total of 394 A. brasilense differentially expressed genes (DEGs) were found: 201 DEGs (34 upregulated and 167 downregulated) at 24 h and 193 DEGs (140 upregulated and 53 downregulated) under the same conditions at 72 h. The results showed a series of A. brasilense genes regulating processes that could be essential for its adaptation to the early stressful condition generated by biogas. Evidence of energy production is shown by nitrate/nitrite reduction and activation of the hypothetical first steps of hydrogenotrophic methanogenesis; signal molecule modulation is observed: indole-3-acetic acid (IAA), riboflavin, and vitamin B6, activation of Type VI secretion system responding to IAA exposure, as well as polyhydroxybutyrate (PHB) biosynthesis and accumulation. Moreover, an overexpression of ipdC, ribB, and phaC genes, encoding the key enzymes for the production of the signal molecule IAA, vitamin riboflavin, and PHB production of 2, 1.5 and 11 folds, respectively, was observed at the first 24 h of incubation under biogas atmosphere Overall, the ability of A. brasilense to metabolically adapt to a biogas atmosphere is demonstrated, which allows its implementation for generating biogas with high calorific values and the use of renewable energies through microalga biotechnologies.
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Affiliation(s)
| | - Claudia A Contreras
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Chihuahua, Mexico
| | - Francisco J Choix
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Chihuahua, Mexico
- CONAHCYT-Universidad Autónoma de Chihuahua, Chihuahua, Mexico
| | - Luz E de-Bashan
- The Bashan Institute of Science, Auburn, AL, USA
- Departament of Entomology and Plant Pathology, Auburn University, Auburn, AL, USA
| | | | - Oskar A Palacios
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Chihuahua, Mexico.
- The Bashan Institute of Science, Auburn, AL, USA.
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Wang H, Jin H, Chen Z, Li W, Ma J, Hu T, Liu Q, Zhang Y, Lin X, Xie Z. Azospirillum isscasi sp. nov., a bacterium isolated from rhizosphere soil of rice. Int J Syst Evol Microbiol 2024; 74. [PMID: 38214292 DOI: 10.1099/ijsem.0.006218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024] Open
Abstract
A Gram-negative and rod-shaped bacterium, designated C340-1T, was isolated and screened from paddy soil in Zhongshan County, Guangxi Province, PR China. This strain grew at 20-42 °C (optimum, 37 °C), pH 5.0-9.0 (optimum, pH 7.0) and 0-4 % (w/v) NaCl (optimum, 0-1 %) on Reasoner's 2A medium. The strain could fix atmospheric nitrogen and acetylene reduction activity was recorded up to 120.26 nmol ethylene h-1 (mg protein)-1. Q-10 was the only isoprenoid quinone component; phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine, an unidentified aminolipid and an unidentified polar lipid were the major polar lipids. Summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c) and summed feature 3 (C16 : 1 ω7c and/or C16 : 1 ω6c) were the primary cellular fatty acids. The genome of strain C340-1T was 6.18 Mb, and the G+C content was 69.0 mol%. Phylogenetic tree analysis based on 16S rRNA gene and 92 core genes showed that strain C340-1T was closely related to and clustered with the type strains Azospirillum brasilense JCM 1224T, Azospirillum argentinense Az39T, Azospirillum baldaniorum Sp245T and Azospirillum formosense JCM 17639T. The average nucleotide identity (ANI), average amino acid identity (AAI) and digital DNA-DNA hybridization (dDDH) values between strain C340-1T and the closely related type strains mentioned above were significantly lower than the threshold values for species classification (95-96 %, 95-96 % and 70 %, respectively). Based on phylogenetic, genomic, phenotypic, physiological and biochemical data, we have reason to believe that C340-1T represents a new species of the genus Azospirillum, for which the name Azospirillum isscasi sp. nov. is proposed. The type strain is C340-1T(=CCTCC AB 2023105T=KCTC 8126T).
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Affiliation(s)
- Hui Wang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Haiyang Jin
- Wheat Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002, PR China
| | - Zhe Chen
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Wenjun Li
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Jing Ma
- Department of Agronomy and Horticulture, Jiangsu Vocational College of Agriculture and Forestry, Jurong 212400, PR China
| | - Tianlong Hu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Qi Liu
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, PR China
| | - Yanhui Zhang
- School of Geography, Nanjing Normal University, Nanjing 210023, PR China
| | - Xingwu Lin
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Zubin Xie
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
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Ali HH, Ilyas M, Zaheer MS, Hameed A, Ikram K, Khan WUD, Iqbal R, Awan TH, Rizwan M, Mustafa AEZMA, Elshikh MS. Alleviation of chromium toxicity in mung bean (Vigna radiata L.) using salicylic acid and Azospirillum brasilense. BMC Plant Biol 2023; 23:535. [PMID: 37919670 PMCID: PMC10623693 DOI: 10.1186/s12870-023-04528-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 10/16/2023] [Indexed: 11/04/2023]
Abstract
BACKGROUND Chromium (Cr) contamination in soil poses a serious hazard because it hinders plant growth, which eventually reduces crop yield and raises the possibility of a food shortage. Cr's harmful effects interfere with crucial plant functions like photosynthesis and respiration, reducing energy output, causing oxidative stress, and interfering with nutrient intake. In this study, the negative effects of Cr on mung beans are examined, as well as investigate the effectiveness of Azospirillum brasilense and salicylic acid in reducing Cr-induced stress. RESULTS We investigated how different Cr levels (200, 300, and 400 mg/kg soil) affected the growth of mung bean seedlings with the use of Azospirillum brasilense and salicylic acid. Experiment was conducted with randomized complete block design with 13 treatments having three replications. Significant growth retardation was caused by Cr, as were important factors like shoot and root length, plant height, dry weight, and chlorophyll content significantly reduced. 37.15% plant height, 71.85% root length, 57.09% chlorophyll contents, 82.34% crop growth rate was decreased when Cr toxicity was @ 50 µM but this decrease was remain 27.80%, 44.70%, 38.97% and 63.42%, respectively when applied A. brasilense and Salicylic acid in combine form. Use of Azospirillum brasilense and salicylic acid significantly increased mung bean seedling growth (49%) and contributed to reducing the toxic effect of Cr stress (34% and 14% in plant height, respectively) due to their beneficial properties in promoting plant growth. CONCLUSIONS Mung bean seedlings are severely damaged by Cr contamination, which limits their growth and physiological characteristics. Using Azospirillum brasilense and salicylic acid together appears to be a viable way to combat stress brought on by Cr and promote general plant growth. Greater nutrient intake, increased antioxidant enzyme activity, and greater root growth are examples of synergistic effects. This strategy has the ability to reduce oxidative stress brought on by chromium, enhancing plant resistance to adverse circumstances. The study offers new perspectives on sustainable practices that hold potential for increasing agricultural output and guaranteeing food security.
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Affiliation(s)
- Hafiz Haider Ali
- Department of Agriculture, Government College University Lahore, Lahore, 54000, Pakistan.
| | - Maimoona Ilyas
- Sustainable Development Study Center (SDSC), Government College University Lahore, Lahore, 54000, Pakistan
| | - Muhammad Saqlain Zaheer
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, 64200, Pakistan.
| | - Akhtar Hameed
- Institute of Plant Protection, MNS University of Agriculture, Multan, 61000, Pakistan
| | - Kamran Ikram
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, 64200, Pakistan
| | - Waqas Ud Din Khan
- Department of Agriculture, Government College University Lahore, Lahore, 54000, Pakistan
| | - Rashid Iqbal
- Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Tahir Hussain Awan
- Department of Agronomy, Rice Research Institute, Kala Shah Kaku, Lahore, 54000, Pakistan
| | - Muhammad Rizwan
- Department of Plant Nutrition, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Bonn, 53115, Germany.
| | - Abd El-Zaher M A Mustafa
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh, 11451, Saudi Arabia
| | - Mohamed Soliman Elshikh
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh, 11451, Saudi Arabia
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Souza LC, Monteiro GGTN, Marinho RKM, Souza EFL, Oliveira SCF, Ferreira ACS, Oliveira Neto CF, Okumura RS, Souza LC. Nitrogen metabolism in maize plants submitted to drought, brassinosteroids and azospirillum. BRAZ J BIOL 2023; 83:e276264. [PMID: 37937632 DOI: 10.1590/1519-6984.276264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/09/2023] [Indexed: 11/09/2023] Open
Abstract
The water deficit in particular, reduces the productivity of vegetable crops. To minimize these harmful effects on agriculture, several agronomic and physiological practices are being studied, such as the use of bacteria and water stress attenuators, such as brassinosteroids. Considering the socioeconomic relevance of corn culture and its sensitivity when exposed to water deficit, the objective of the present study was to evaluate the action of brassinosteroids and azospirillum on nitrogen metabolism in corn plants subjected to water stress conditions. The experiment was carried out in a greenhouse, in a period of 47 days, with corn plants, using the hybrid K9606 VIP3. The design was completely randomized, in a 2x2x3 factorial scheme, with six replications. The first factor corresponds to two water regimes (presence and absence of water deficit). The second corresponds to inoculation via seed of Azospirillum brasiliense and absence of inoculation. And the third corresponds to the application of three concentrations of brassinosteroids (0, 0.3 and 0.6 μM). Were determined Nitrate; nitrate reductase; free ammonium; total soluble aminoacids; soluble proteins; proline; glycine betaine and glutamine synthetase. The lack of water in plants provided a reduction in the protein and nitrate reductase contents, in leaves and roots. For ammonium, plants with water deficit inoculated at a concentration of 0.3 μM, obtained an increase of 7.16 (70.26%) and 13.89 (77.04%) mmol NH4 + .Kg-1. DM (Dry mass) on the leaf and root respectively. The water deficit in the soil provided significant increases in the concentrations of glycine betaine, nitrate, proline and aminoacids, both in the leaves and in the roots of the corn plants. On the other hand, the contents of glutamine synthetase had a reduction in both leaves and roots.
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Affiliation(s)
- L C Souza
- Universidade Federal Rural da Amazônia - UFRA, Instituto de Ciências Agrárias, Belém, PA, Brasil
| | | | - R K M Marinho
- Universidade Federal Rural da Amazônia - UFRA, Instituto de Ciências Agrárias, Belém, PA, Brasil
| | - E F L Souza
- Universidade Federal Rural da Amazônia - UFRA, Instituto de Ciências Agrárias, Belém, PA, Brasil
| | - S C F Oliveira
- Universidade Federal Rural da Amazônia - UFRA, Instituto de Ciências Agrárias, Belém, PA, Brasil
| | - A C S Ferreira
- Universidade Federal Rural da Amazônia - UFRA, Instituto de Ciências Agrárias, Belém, PA, Brasil
| | - C F Oliveira Neto
- Universidade Federal Rural da Amazônia - UFRA, Instituto de Ciências Agrárias, Belém, PA, Brasil
| | - R S Okumura
- Universidade Federal Rural da Amazônia - UFRA, Instituto de Ciências Agrárias, Belém, PA, Brasil
| | - L C Souza
- Universidade Federal do Maranhão - UFMA, Centro de Ciencias Agrarias e Ambientais, Campus Chapadinha, Chapadinha, MA, Brasil
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Guliy OI, Zaitsev BD, Smirnov AV, Karavaeva OA, Burygin GL, Borodina IA. Microwave resonator-based sensor system for specific antibody detection. Int J Biol Macromol 2023; 242:124613. [PMID: 37119881 DOI: 10.1016/j.ijbiomac.2023.124613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 04/18/2023] [Accepted: 04/22/2023] [Indexed: 05/01/2023]
Abstract
An antibody-detecting sensor is described that is based on a microwave electrodynamic resonator. A polystyrene film with immobilized bacteria deposited on a lithium niobate plate was placed at one end of the resonator and was used as the sensing element. The second end was electrically shorted. The frequency and depth of the reflection coefficient S11 for three resonances in the range 6.5-8.5 GHz were used as an analytical signal to examine antibody interactions with bacteria and determine the time required for cell immobilization. The sensor distinguished between situations in which bacteria interacted with specific antibodies and those in which no such interaction occurred (control). Although the cell-antibody interaction changed the frequency and depth of the second and third resonance peaks, the parameters of the first resonance peak did not change. The interaction of cells with nonspecific antibodies did not change the parameters of any of the peaks. These results are promising for use in the design of methods to detect specific antibodies, which can supplement the existing methods of antibody analysis.
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Affiliation(s)
- Olga I Guliy
- Institute of Biochemistry and Physiology of Plants and Microorganisms - Subdivision of the Federal State Budgetary Research Institution Saratov Federal Scientific Centre of the Russian Academy of Sciences (IBPPM RAS), Saratov 410049, Russia.
| | - Boris D Zaitsev
- Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Saratov Branch, Saratov 410019, Russia
| | - Andrey V Smirnov
- Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow 125009, Russia
| | - Olga A Karavaeva
- Institute of Biochemistry and Physiology of Plants and Microorganisms - Subdivision of the Federal State Budgetary Research Institution Saratov Federal Scientific Centre of the Russian Academy of Sciences (IBPPM RAS), Saratov 410049, Russia
| | - Gennady L Burygin
- Institute of Biochemistry and Physiology of Plants and Microorganisms - Subdivision of the Federal State Budgetary Research Institution Saratov Federal Scientific Centre of the Russian Academy of Sciences (IBPPM RAS), Saratov 410049, Russia
| | - Irina A Borodina
- Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Saratov Branch, Saratov 410019, Russia
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Lima-Tenório MK, Furmam-Cherobim F, Karas PR, Hyeda D, Takahashi WY, Pinto Junior AS, Galvão CW, Tenório-Neto ET, Etto RM. Azospirillum brasilense AbV5/6 encapsulation in dual-crosslinked beads based on cationic starch. Carbohydr Polym 2023; 308:120631. [PMID: 36813333 DOI: 10.1016/j.carbpol.2023.120631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 12/26/2022] [Accepted: 01/26/2023] [Indexed: 02/05/2023]
Abstract
The main challenge of agriculture is feeding the growing population and at the same time providing environmental sustainability. Using Azospirillum brasilense as a biofertilizer has proved to be a promising solution. However, its prevalence in soil has not been efficient due to biotic and abiotic stresses. Thus, to overcome this drawback, we encapsulated the A. brasilense AbV5 and AbV6 strains in a dual-crosslinked bead based on cationic starch. The starch was previously modified with ethylenediamine by an alkylation approach. Then, the beads were obtained by a dripping technique, crosslinking sodium tripolyphosphate with a blend containing starch, cationic starch, and chitosan. The AbV5/6 strains were encapsulated into the hydrogel beads by a swelling diffusion method followed by desiccation. Plants treated with encapsulated AbV5/6 cells showed an increase in the root length by 19 %, shoot fresh weight by 17 %, and the content of chlorophyll b by 71 %. The encapsulation of AbV5/6 strains showed to keep A. brasilense viability for at least 60 days and efficiency to promote maize growth.
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Affiliation(s)
- Michele K Lima-Tenório
- Microbial Molecular Biology Laboratory, State University of Ponta Grossa (UEPG), CEP: 84030-900 Ponta Grossa, PR, Brazil; Postgraduate Program in Agronomy, State University of Ponta Grossa (UEPG), CEP: 84030-900 Ponta Grossa, PR, Brazil.
| | - Fernanda Furmam-Cherobim
- Microbial Molecular Biology Laboratory, State University of Ponta Grossa (UEPG), CEP: 84030-900 Ponta Grossa, PR, Brazil; Postgraduate Program in Agronomy, State University of Ponta Grossa (UEPG), CEP: 84030-900 Ponta Grossa, PR, Brazil
| | - Pedro R Karas
- Microbial Molecular Biology Laboratory, State University of Ponta Grossa (UEPG), CEP: 84030-900 Ponta Grossa, PR, Brazil
| | - Daiane Hyeda
- Microbial Molecular Biology Laboratory, State University of Ponta Grossa (UEPG), CEP: 84030-900 Ponta Grossa, PR, Brazil; Postgraduate Program in Agronomy, State University of Ponta Grossa (UEPG), CEP: 84030-900 Ponta Grossa, PR, Brazil
| | - Willian Y Takahashi
- Microbial Molecular Biology Laboratory, State University of Ponta Grossa (UEPG), CEP: 84030-900 Ponta Grossa, PR, Brazil; Postgraduate Program in Agronomy, State University of Ponta Grossa (UEPG), CEP: 84030-900 Ponta Grossa, PR, Brazil
| | - Arthur S Pinto Junior
- Simbiose Company, Manager of Research and Development, CEP: 98005-970 Cruz Alta, RS, Brazil
| | - Carolina W Galvão
- Microbial Molecular Biology Laboratory, State University of Ponta Grossa (UEPG), CEP: 84030-900 Ponta Grossa, PR, Brazil; Postgraduate Program in Agronomy, State University of Ponta Grossa (UEPG), CEP: 84030-900 Ponta Grossa, PR, Brazil.
| | - Ernandes T Tenório-Neto
- Laboratory of Multifunctional Polymeric Materials, State University of Ponta Grossa (UEPG), Department of Chemistry, L-27, CEP: 84030-900 Ponta Grossa, PR, Brazil.
| | - Rafael M Etto
- Microbial Molecular Biology Laboratory, State University of Ponta Grossa (UEPG), CEP: 84030-900 Ponta Grossa, PR, Brazil; Postgraduate Program in Agronomy, State University of Ponta Grossa (UEPG), CEP: 84030-900 Ponta Grossa, PR, Brazil.
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Kamnev AA, Dyatlova YA, Kenzhegulov OA, Fedonenko YP, Evstigneeva SS, Tugarova AV. Fourier Transform Infrared (FTIR) Spectroscopic Study of Biofilms Formed by the Rhizobacterium Azospirillum baldaniorum Sp245: Aspects of Methodology and Matrix Composition. Molecules 2023; 28:molecules28041949. [PMID: 36838937 PMCID: PMC9962177 DOI: 10.3390/molecules28041949] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/14/2023] [Accepted: 02/17/2023] [Indexed: 02/22/2023] Open
Abstract
Biofilms represent the main mode of existence of bacteria and play very significant roles in many industrial, medical and agricultural fields. Analysis of biofilms is a challenging task owing to their sophisticated composition, heterogeneity and variability. In this study, biofilms formed by the rhizobacterium Azospirillum baldaniorum (strain Sp245), isolated biofilm matrix and its macrocomponents have for the first time been studied in detail, using Fourier transform infrared (FTIR) spectroscopy, with a special emphasis on the methodology. The accompanying novel data of comparative chemical analyses of the biofilm matrix, its fractions and lipopolysaccharide isolated from the outer membrane of the cells of this strain, as well as their electrophoretic analyses (SDS-PAGE) have been found to be in good agreement with the FTIR spectroscopic results.
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Cui Q, Liu D, Chen H, Qiu T, Zhao S, Duan C, Cui Y, Zhu X, Chao H, Wang Y, Wang J, Fang L. Synergistic interplay between Azospirillum brasilense and exogenous signaling molecule H 2S promotes Cd stress resistance and growth in pak choi (Brassica chinensis L.). J Hazard Mater 2023; 444:130425. [PMID: 36435046 DOI: 10.1016/j.jhazmat.2022.130425] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 11/04/2022] [Accepted: 11/16/2022] [Indexed: 06/16/2023]
Abstract
Inoculation with growth-promoting rhizobacteria inoculation and the addition of exogenous signaling molecules are two distinct strategies for improving heavy metal resistance and promoting growth in crops through several mechanisms. However, whether rhizobacteria and phyllosphere signaling molecules can act synergistically alleviate heavy metal stress and promote growth and the mechanisms underlying these effects remain unclear. Here, a novel strategy involving the co-application of growth-promoting rhizobacteria and an exogenous signaling molecule was developed to reduce cadmium (Cd) phytotoxicity and promote pak choi growth in Cd-contaminated soil. We found that the co-application of Azospirillum brasilense and hydrogen sulfide (H2S) resulted in significant improvements in shoot biomass and antioxidant enzyme content and a decline in the levels of Cd translocation factors. In addition, this co-application significantly improved pak choi Cd resistance. Furthermore, we observed a significant negative correlation between abscisic acid concentration and Cd content of pak choi and a positive correlation between H2S concentration and biomass. These findings revealed that the co-application of rhizobacteria and exogenous signaling molecules synergistically promoted the growth of vegetable crops subjected to heavy metal stress. Our results may serve as a guide for improving the food safety of crops grown in soil contaminated with heavy metals.
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Affiliation(s)
- Qingliang Cui
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, The Research Center of Soil and Water Conservation and Ecological Environment, CAS and MOE, Yangling 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS and MWR, Yangling 712100, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dongdong Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Hansong Chen
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, The Research Center of Soil and Water Conservation and Ecological Environment, CAS and MOE, Yangling 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS and MWR, Yangling 712100, China; University of Chinese Academy of Sciences, Beijing 100049, China; College of Xingzhi, Zhejiang Normal University, Jinhua 321000, China
| | - Tianyi Qiu
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Shuling Zhao
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, The Research Center of Soil and Water Conservation and Ecological Environment, CAS and MOE, Yangling 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS and MWR, Yangling 712100, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chengjiao Duan
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, The Research Center of Soil and Water Conservation and Ecological Environment, CAS and MOE, Yangling 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS and MWR, Yangling 712100, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yongxing Cui
- Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Xiaozhen Zhu
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Herong Chao
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Yuhan Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Jie Wang
- Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China
| | - Linchuan Fang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, The Research Center of Soil and Water Conservation and Ecological Environment, CAS and MOE, Yangling 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS and MWR, Yangling 712100, China; CAS Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi'an 710061, China.
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10
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Vezza ME, Pramparo RDP, Wevar Oller AL, Agostini E, Talano MA. Promising co-inoculation strategies to reduce arsenic toxicity in soybean. Environ Sci Pollut Res Int 2022; 29:88066-88077. [PMID: 35821321 DOI: 10.1007/s11356-022-21443-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 06/09/2022] [Indexed: 06/15/2023]
Abstract
Arsenic (As) is the cause for concern worldwide due to its high toxicity. Its presence in agricultural soils and groundwater adversely affects soybean (Glycine max L.) growth and yield and also endangers food safety. Plant growth-promoting rhizobacteria (PGPR) could be used as part of cost-effective and eco-friendly strategies to mitigate As phytotoxicity. However, simple inoculation of soybean with PGPR Bradyrhizobium japonicum E109 (E109), a common practice in Argentina, is not effective in counteracting the effects of As exposure. Our aim was to assess whether the response of soybean to arsenate (AsV) and arsenite (AsIII) could be helpfully modulated by co-inoculating E109 with the free-living PGPRs Azospirillum brasilense Cd (Cd) or Bacillus pumilus SF5 (SF5). Co-inoculation with E109 + SF5 alleviated As-induced depletion of chlorophyll a and b, and carotenoid content, reaching an increase of 26, 28 y 31%, respectively. It also enhanced nodulation (15-19%) under As exposure. E109 + Cd and E109 + SF5 induced changes in the antioxidant system, which could be related to the maintenance of redox homeostasis. Moreover, As accumulation was reduced by 53% in aerial parts of plants inoculated with E109 + Cd, and by 16% in the roots of those inoculated with E109 + SF5. The strains selected show interesting potential for the development of biotechnological schemes to improve soybean yield while guaranteeing safer food production.
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Affiliation(s)
- Mariana Elisa Vezza
- Departamento de Biología Molecular, FCEFQyN, Instituto de Biotecnología Ambiental Y Salud, INBIAS-CONICET, Universidad Nacional de Río Cuarto (UNRC), Ruta Nacional 36 Km 601, 5800, Río Cuarto, Córdoba, CP, Argentina
| | - Romina Del Pilar Pramparo
- Departamento de Biología Molecular, FCEFQyN, Instituto de Biotecnología Ambiental Y Salud, INBIAS-CONICET, Universidad Nacional de Río Cuarto (UNRC), Ruta Nacional 36 Km 601, 5800, Río Cuarto, Córdoba, CP, Argentina
| | - Ana Laura Wevar Oller
- Departamento de Biología Molecular, FCEFQyN, Instituto de Biotecnología Ambiental Y Salud, INBIAS-CONICET, Universidad Nacional de Río Cuarto (UNRC), Ruta Nacional 36 Km 601, 5800, Río Cuarto, Córdoba, CP, Argentina
| | - Elizabeth Agostini
- Departamento de Biología Molecular, FCEFQyN, Instituto de Biotecnología Ambiental Y Salud, INBIAS-CONICET, Universidad Nacional de Río Cuarto (UNRC), Ruta Nacional 36 Km 601, 5800, Río Cuarto, Córdoba, CP, Argentina.
| | - Melina Andrea Talano
- Departamento de Biología Molecular, FCEFQyN, Instituto de Biotecnología Ambiental Y Salud, INBIAS-CONICET, Universidad Nacional de Río Cuarto (UNRC), Ruta Nacional 36 Km 601, 5800, Río Cuarto, Córdoba, CP, Argentina
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11
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Moreira VDA, Oliveira CEDS, Jalal A, Gato IMB, Oliveira TJSS, Boleta GHM, Giolo VM, Vitória LS, Tamburi KV, Filho MCMT. Inoculation with Trichoderma harzianum and Azospirillum brasilense increases nutrition and yield of hydroponic lettuce. Arch Microbiol 2022; 204:440. [PMID: 35771351 DOI: 10.1007/s00203-022-03047-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 06/03/2022] [Indexed: 11/29/2022]
Abstract
The use of beneficial fungi and bacteria stimulate plant growth and serve to improve yield and food quality in a sustainable manner. The electrical conductivity of nutrients solution is closely linked to better nutrition of vegetable plants in a hydroponic system. Therefore, objectives of current study were to evaluate the effect of isolated and combined inoculation with Azospirillum brasilense and Trichoderma harzianum under two electrical conductivities on growth, nutrition, and yield of lettuce in hydroponic cultivation. The experiment was designed in a strip-plot block with five replications in a 4 × 2 factorial scheme. The treatments were consisted of four microbial inoculations (without, A. brasilense, T. harzianum and co-inoculation) and electrical conductivities (1.2 and 1.4 dS m-1). Inoculation with A. brasilense and T. harzianum increased lettuce root growth by 47% and 20%, respectively. The single inoculation of T. harzianum provided higher fresh leaves yield (24%) at electrical conductivity of 1.2 dS m-1, while single inoculation with A. brasilense increased fresh leaves yield by 17% at electrical conductivity 1.4 dS m-1. The lowest shoot NO3- accumulation (40%) was observed with inoculation of A. brasilense and highest (28%) with inoculation T. harzianum in both electrical conductivities. Inoculation with A. brasilense increased leaf accumulation of K, P, Ca, Mg, Fe, Mn, Cu, and Zn, which are essential for human nutrition and being recommended to improve yield of lettuce plants in hydroponics. It is recommended to use EC 1.4 dS m-1 of the nutrients solution to improve accumulation of K, Mn, Cu, and Zn, regardless of inoculations for biofortification of lettuce with application of fertilizers.
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Affiliation(s)
- Vitoria de Almeida Moreira
- Department of Plant Protection, Rural Engineering and Soils, São Paulo State University-UNESP-FEIS, School of Engineering, Ilha Solteira, São Paulo, 15385-000, Brazil
| | - Carlos Eduardo da Silva Oliveira
- Department of Plant Protection, Rural Engineering and Soils, São Paulo State University-UNESP-FEIS, School of Engineering, Ilha Solteira, São Paulo, 15385-000, Brazil.
| | - Arshad Jalal
- Department of Plant Protection, Rural Engineering and Soils, São Paulo State University-UNESP-FEIS, School of Engineering, Ilha Solteira, São Paulo, 15385-000, Brazil
| | - Isabela Martins Bueno Gato
- Department of Plant Protection, Rural Engineering and Soils, São Paulo State University-UNESP-FEIS, School of Engineering, Ilha Solteira, São Paulo, 15385-000, Brazil
| | - Thaissa Julyanne Soares Sena Oliveira
- Department of Plant Protection, Rural Engineering and Soils, São Paulo State University-UNESP-FEIS, School of Engineering, Ilha Solteira, São Paulo, 15385-000, Brazil
| | - Guilherme Henrique Marcandalli Boleta
- Department of Plant Protection, Rural Engineering and Soils, São Paulo State University-UNESP-FEIS, School of Engineering, Ilha Solteira, São Paulo, 15385-000, Brazil
| | - Victoria Moraes Giolo
- Department of Plant Protection, Rural Engineering and Soils, São Paulo State University-UNESP-FEIS, School of Engineering, Ilha Solteira, São Paulo, 15385-000, Brazil
| | - Letícia Schenaide Vitória
- Department of Plant Protection, Rural Engineering and Soils, São Paulo State University-UNESP-FEIS, School of Engineering, Ilha Solteira, São Paulo, 15385-000, Brazil
| | - Karen Vicentini Tamburi
- Department of Plant Protection, Rural Engineering and Soils, São Paulo State University-UNESP-FEIS, School of Engineering, Ilha Solteira, São Paulo, 15385-000, Brazil
| | - Marcelo Carvalho Minhoto Teixeira Filho
- Department of Plant Protection, Rural Engineering and Soils, São Paulo State University-UNESP-FEIS, School of Engineering, Ilha Solteira, São Paulo, 15385-000, Brazil.
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12
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Zaheer MS, Ali HH, Erinle KO, Wani SH, Okon OG, Nadeem MA, Nawaz M, Bodlah MA, Waqas MM, Iqbal J, Raza A. Inoculation of Azospirillum brasilense and exogenous application of trans-zeatin riboside alleviates arsenic induced physiological damages in wheat (Triticum aestivum). Environ Sci Pollut Res Int 2022; 29:33909-33919. [PMID: 35031990 DOI: 10.1007/s11356-021-18106-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 12/09/2021] [Indexed: 06/14/2023]
Abstract
Due to increased industrialization, arsenic (As) in the soil has become a serious issue for wheat production since past few decades. We investigated the role of Azospirillum brasilense and trans-zeatin riboside (tZR) in the mitigation of arsenic toxicity in wheat for 2 years (2018-2019 and 2019-2020) in pot experiments. Wheat plants grown in soil artificially spiked with arsenic (50, 70, and 100 μM) was left alone or amended with A. brasilense, tZR, or their combination as mitigation strategies. A treatment without arsenic or amendments was maintained as control. Arsenic-induced physiological damages were noticed in the wheat plants. Detrimental effects on the plant physiological functions, such as disruption of cell membrane stability, reduced water uptake, and stomatal functions, were noticed with increase in As toxicity. Application of biological amendments reversed the effects of As toxicity by increasing wheat plant growth rate, leaf area, and photosynthesis and also yield. Therefore, application of tZR and wheat seed inoculation with A. brasilense could be a sustainable and environmentally friendly strategy to mitigate arsenic-induced crop physiological damages.
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Affiliation(s)
- Muhammad Saqlain Zaheer
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan.
| | - Hafiz Haider Ali
- Sustainable Development Study Center (SDSC), Government College University, Katchery Road, Lahore, Pakistan.
| | - Kehinde O Erinle
- School of Agriculture, Food and Wine, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Shabir Hussain Wani
- Mountain Research Centre for Field Crops, Sher-E-Kashmir University of Agricultural Sciences and Technology of Kashmir, Jammu and Kashmir, Khudwani, Anantnag, 192101, India
| | - Okon Godwin Okon
- Department of Botany, Akwa Ibom State University, Ikot Akpaden, Nigeria
| | - Muhammad Azhar Nadeem
- Faculty of Agricultural Sciences and Technologies, Sivas University of Science and Technology, Sivas, 58140, Turkey
| | - Muhammad Nawaz
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
| | - Muhammad Adnan Bodlah
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
| | - Muhammad Mohsin Waqas
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
| | - Javaid Iqbal
- Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia
| | - Ali Raza
- Department of Agronomy, College of Agriculture, University of Sargodha, Sargodha, Pakistan
- Department of Biological Sciences, University of Sialkot, Sialkot, Pakistan
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13
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Checchio MV, de Cássia Alves R, de Oliveira KR, Moro GV, Santos DMMD, Gratão PL. Enhancement of salt tolerance in corn using Azospirillum brasilense: an approach on antioxidant systems. J Plant Res 2021; 134:1279-1289. [PMID: 34302571 DOI: 10.1007/s10265-021-01332-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 07/15/2021] [Indexed: 05/24/2023]
Abstract
Salinity has become one of the major factors limiting agricultural production. In this regard, different cost-effective management strategies such as the use of plant growth-promoting bacteria (PGPB) as inoculants to alleviate salt-stress conditions and minimize plant productivity losses have been used in agricultural systems. The aim of this study was to characterize induced antioxidant responses in corn through inoculation with Azospirillum brasilense and examine the relationship between these responses and the acquired salt-stress tolerance. Treatments were performed by combining sodium chloride (0 and 100 mM NaCl) through irrigation water with absence and presence of A. brasilense inoculation. The experiment was performed in a completely randomized design with four replications. Lipid peroxidation (malondialdehyde [MDA]), and nitrogen (N), sodium (Na+) and potassium (K+) contents, as well as dry biomass, glycine betaine, and antioxidant enzymes activities such as of superoxide dismutase (SOD, EC 1. 15. 1. 1), glutathione reductase (GR, EC 1. 6. 4. 2), guaiacol peroxidase (GPOX, EC 1. 11. 1. 7), and glutathione peroxidase (GSH-PX, EC 1. 11. 1. 9) were determined. Overall results indicated that plants treated with 100 mM NaCl showed the most pronounced salt-stress damages with consequent increase in MDA content. However, inoculated plants showed an enhanced capacity to withstand or avoid salt-stress damages. These results could be attributed, at least in part, to the increased activity of antioxidant enzymes. Our results suggest that A. brasilense may confer tolerance to salt stress in corn plants enhancing antioxidant responses, primarily by the enzymes GSH-PX and GPOX, and the osmolyte glycine betaine.
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Affiliation(s)
- Mirela Vantini Checchio
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agrárias e Veterinárias, Depto. de Biologia Aplicada à Agropecuária, Jaboticabal, SP, 14884-900, Brazil
| | - Rita de Cássia Alves
- Núcleo de Produção Vegetal, Instituto Nacional do Semiárido (INSA), Campina Grande, PB, 58434-700, Brazil
| | - Kevein Ruas de Oliveira
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agrárias e Veterinárias, Depto. de Biologia Aplicada à Agropecuária, Jaboticabal, SP, 14884-900, Brazil
| | - Gustavo Vitti Moro
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agrárias e Veterinárias, Depto. de Produção Vegetal, Jaboticabal, SP, 14884-900, Brazil
| | - Durvalina Maria Mathias Dos Santos
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agrárias e Veterinárias, Depto. de Biologia Aplicada à Agropecuária, Jaboticabal, SP, 14884-900, Brazil
| | - Priscila Lupino Gratão
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agrárias e Veterinárias, Depto. de Biologia Aplicada à Agropecuária, Jaboticabal, SP, 14884-900, Brazil.
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14
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Peralta JM, Bianucci E, Romero-Puertas MC, Furlan A, Castro S, Travaglia C. Targeting redox metabolism of the maize- Azospirillum brasilense interaction exposed to arsenic-affected groundwater. Physiol Plant 2021; 173:1189-1206. [PMID: 34331344 DOI: 10.1111/ppl.13514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 07/19/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
Arsenic in groundwater constitutes an agronomic problem due to its potential accumulation in the food chain. Among the agro-sustainable tools to reduce metal(oid)s toxicity, the use of plant growth-promoting bacteria (PGPB) becomes important. For that, and based on previous results in which significant differences of As translocation were observed when inoculating maize plants with Az39 or CD Azospirillum strains, we decided to decipher the redox metabolism changes and the antioxidant system response of maize plants inoculated when exposed to a realistic arsenate (AsV ) dose. Results showed that AsV caused morphological changes in the root exodermis. Photosynthetic pigments decreased only in CD inoculated plants, while oxidative stress evidence was detected throughout the plant, regardless of the assayed strain. The antioxidant response was strain-differential since only CD inoculated plants showed an increase in superoxide dismutase, glutathione S-transferase (GST), and glutathione reductase (GR) activities while other enzymes showed the same behavior irrespective of the inoculated strain. Gene expression assays reported that only GST23 transcript level was upregulated by arsenate, regardless of the inoculated strain. AsV diminished the glutathione (GSH) content of roots inoculated with the Az39 strain, and CD inoculated plants showed a decrease of oxidized GSH (GSSG) levels. We suggest a model in which the antioxidant response of the maize-diazotrophs system is modulated by the strain and that GSH plays a central role acting mainly as a substrate for GST. These findings generate knowledge for a suitable PGPB selection, and its scaling to an effective bioinoculant formulation for maize crops exposed to adverse environmental conditions.
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Affiliation(s)
- Juan Manuel Peralta
- Instituto de Investigaciones Agrobiotecnológicas - Consejo Nacional de Investigaciones Científicas y Técnicas (INIAB-CONICET), Departamento de Ciencias Naturales, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, Argentina
- Departamento de Bioquímica, Biología Celular y Molecular de Plantas, Estación Experimental del Zaidín, CSIC, Granada, Spain
| | - Eliana Bianucci
- Instituto de Investigaciones Agrobiotecnológicas - Consejo Nacional de Investigaciones Científicas y Técnicas (INIAB-CONICET), Departamento de Ciencias Naturales, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, Argentina
| | - María C Romero-Puertas
- Departamento de Bioquímica, Biología Celular y Molecular de Plantas, Estación Experimental del Zaidín, CSIC, Granada, Spain
| | - Ana Furlan
- Instituto de Investigaciones Agrobiotecnológicas - Consejo Nacional de Investigaciones Científicas y Técnicas (INIAB-CONICET), Departamento de Ciencias Naturales, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, Argentina
| | - Stella Castro
- Instituto de Investigaciones Agrobiotecnológicas - Consejo Nacional de Investigaciones Científicas y Técnicas (INIAB-CONICET), Departamento de Ciencias Naturales, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, Argentina
| | - Claudia Travaglia
- Instituto de Investigaciones Agrobiotecnológicas - Consejo Nacional de Investigaciones Científicas y Técnicas (INIAB-CONICET), Departamento de Ciencias Naturales, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, Argentina
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15
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Vannini C, Domingo G, Fiorilli V, Seco DG, Novero M, Marsoni M, Wisniewski-Dye F, Bracale M, Moulin L, Bonfante P. Proteomic analysis reveals how pairing of a Mycorrhizal fungus with plant growth-promoting bacteria modulates growth and defense in wheat. Plant Cell Environ 2021; 44:1946-1960. [PMID: 33675052 DOI: 10.1111/pce.14039] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 02/17/2021] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
Plants rely on their microbiota for improving the nutritional status and environmental stress tolerance. Previous studies mainly focused on bipartite interactions (a plant challenged by a single microbe), while plant responses to multiple microbes have received limited attention. Here, we investigated local and systemic changes induced in wheat by two plant growth-promoting bacteria (PGPB), Azospirillum brasilense and Paraburkholderia graminis, either alone or together with an arbuscular mycorrhizal fungus (AMF). We conducted phenotypic, proteomic, and biochemical analyses to investigate bipartite (wheat-PGPB) and tripartite (wheat-PGPB-AMF) interactions, also upon a leaf pathogen infection. Results revealed that only AMF and A. brasilense promoted plant growth by activating photosynthesis and N assimilation which led to increased glucose and amino acid content. The bioprotective effect of the PGPB-AMF interactions on infected wheat plants depended on the PGPB-AMF combinations, which caused specific phenotypic and proteomic responses (elicitation of defense related proteins, immune response and jasmonic acid biosynthesis). In the whole, wheat responses strongly depended on the inoculum composition (single vs. multiple microbes) and the investigated organs (roots vs. leaf). Our findings showed that AMF is the best-performing microbe, suggesting its presence as the crucial one for synthetic microbial community development.
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Affiliation(s)
- Candida Vannini
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Varese, Italy
| | - Guido Domingo
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Varese, Italy
| | - Valentina Fiorilli
- Department of Life Sciences and Systems Biology, Università degli Studi di Torino, Torino, Italy
| | | | - Mara Novero
- Department of Life Sciences and Systems Biology, Università degli Studi di Torino, Torino, Italy
| | - Milena Marsoni
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Varese, Italy
| | - Florence Wisniewski-Dye
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, INRAE, VetAgroSup, UMR Ecologie Microbienne, Villeurbanne, France
| | - Marcella Bracale
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Varese, Italy
| | - Lionel Moulin
- IRD, CIRAD, University of Montpellier, IPME, Montpellier, France
| | - Paola Bonfante
- Department of Life Sciences and Systems Biology, Università degli Studi di Torino, Torino, Italy
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16
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Tugarova AV, Dyatlova YA, Kenzhegulov OA, Kamnev AA. Poly-3-hydroxybutyrate synthesis by different Azospirillum brasilense strains under varying nitrogen deficiency: A comparative in-situ FTIR spectroscopic analysis. Spectrochim Acta A Mol Biomol Spectrosc 2021; 252:119458. [PMID: 33601223 DOI: 10.1016/j.saa.2021.119458] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 11/23/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
Monitoring of poly-3-hydroxybutyrate accumulation and changes in its relative contents in biomass of the plant-growth-promoting bacteria Azospirillum brasilense (strains Sp7, Cd and Sp245) was performed during aerobic cultivation for 1 to 8 days at various initial concentrations of bound nitrogen (0.1 to 0.5 g∙L-1 NH4Cl) in the culture medium using in-situ transmission FTIR spectroscopy. A methodology has been proposed based on calculating band areas in FTIR spectra (instead of band intensities commonly used earlier) for determining relative contents of PHB in dry bacterial biomass, using the ester ν(C=O) band as a PHB marker (in the region 1750-1720 cm-1) and amide II band of cellular proteins (at ca. 1540 cm-1). Differences in PHB accumulation levels and their changes in the course of cultivation under various trophic stress for the three strains are discussed in relation to their different ecological niches which they occupy in the rhizosphere.
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Affiliation(s)
- Anna V Tugarova
- Laboratory of Biochemistry, Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prosp. Entuziastov, 410049 Saratov, Russia
| | - Yulia A Dyatlova
- Laboratory of Biochemistry, Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prosp. Entuziastov, 410049 Saratov, Russia
| | - Odissey A Kenzhegulov
- Laboratory of Biochemistry, Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prosp. Entuziastov, 410049 Saratov, Russia
| | - Alexander A Kamnev
- Laboratory of Biochemistry, Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prosp. Entuziastov, 410049 Saratov, Russia.
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Cesari AB, Paulucci NS, Yslas EI, Dardanelli MS. Immobilization of Bradyrhizobium and Azospirillum in alginate matrix for long time of storage maintains cell viability and interaction with peanut. Appl Microbiol Biotechnol 2020; 104:10145-10164. [PMID: 33025128 DOI: 10.1007/s00253-020-10910-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/04/2020] [Accepted: 09/14/2020] [Indexed: 11/25/2022]
Abstract
Immobilizarion of PGPR for agricultural applications aims to provide temporary physical protection from stressful environmental conditions and the gradual release of cells for successful root colonization, release the cells gradually. In this work, we immobilized Bradyrhizobium sp. SEMIA6144 or Azospirillum brasilense Az39 cells in 2% alginate beads prepared by ionic gelation process, and then stored up to 12 months at 4 °C. Alginate matrix showed interaction with the immobilized bacteria (FTIR), allowed a constant release of cells, and improved their viability and capability to interact with Arachis hypogaea. Cell number into beads reached 107 CFU.bead-1; however, viability decreased from 4 months of storage for Az39, while it was maintained up to 12 months for SEMIA6144, showing a low metabolic activity measured by the MTT assay. Adhesion of SEMIA6144 and Az39 from new beads to peanut root was 11.5% and 16%, respectively, higher than non-immobilized bacteria. Peanut inoculation with 12 months storage SEMIA6144 beads significantly increased root length and biomass at 30 days of growth, and under restrictive water condition (RWC), nodulation and total plant N content increased compared with liquid inoculation. Our results demonstrate that immobilization of SEMIA6144 and Az39 in alginate matrix is a potential alternative to enhance peanut growth even under RWC. KEY POINTS: • Alginate encapsulation enhances viability of SEMIA6144 or Az39 under storage at 4 °C for 1 year. • Alginate beads 2% ensure the gradual release of the microorganisms. • Cells from beads stored for long periods present chemotaxis and adhesion to peanut root. • Peanut inoculation with 1-year-old SEMIA6144 beads improves nodulation and growth in RWC.
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Affiliation(s)
- Adriana B Cesari
- INBIAS, Instituto de Biotecnología Ambiental y Salud, CONICET, Rio Cuarto, Argentina
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km, 601, Rio Cuarto, Argentina
| | - Natalia S Paulucci
- INBIAS, Instituto de Biotecnología Ambiental y Salud, CONICET, Rio Cuarto, Argentina
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km, 601, Rio Cuarto, Argentina
| | - Edith I Yslas
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km, 601, Rio Cuarto, Argentina.
- IITEMA, Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados, CONICET, Rio Cuarto, Argentina.
| | - Marta Susana Dardanelli
- INBIAS, Instituto de Biotecnología Ambiental y Salud, CONICET, Rio Cuarto, Argentina.
- Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km, 601, Rio Cuarto, Argentina.
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Guliy OI, Zaitsev BD, Burygin GL, Karavaeva OA, Fomin AS, Staroverov SA, Borodina IA. Prospects for the Use of Gold Nanoparticles to Increase the Sensitivity of an Acoustic Sensor in the Detection of Microbial Cells. Ultrasound Med Biol 2020; 46:1727-1737. [PMID: 32376190 DOI: 10.1016/j.ultrasmedbio.2020.03.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 03/09/2020] [Accepted: 03/18/2020] [Indexed: 06/11/2023]
Abstract
The interaction of microbial cells with antibody-gold nanoparticle conjugates in conductive suspensions was experimentally studied by using an acoustic slot-mode sensor. The sensor consisted of a piezoelectric plate with a propagating acoustic wave and a liquid container located above this plate with a given gap. An analysis of the measured parameters of the sensor revealed that the specific interaction of bacterial cells with the conjugates led to a stronger change in the sensor output signal than the specific interaction of bacterial cells with antibodies. The measurements were made for Azospirillum brasilense Sp7 cells in buffer with an initial conductivity of 5-30 μS/cm. The limit of cell detection with the conjugates was 103 cells/mL, and the analysis took about 4 min. The advantage of the sensor is the possibility of repeated use and cleaning of the liquid container without damaging the sensor's elements. These results are promising for use in rapid test systems for the direct detection of microbial cells in actual samples of liquids in medical diagnostics.
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Affiliation(s)
- Olga I Guliy
- Institute of Biochemistry and Physiology of Plants and Microorganisms, RAS, Saratov, Russia.
| | - Boris D Zaitsev
- Kotel'nikov Institute of Radio Engineering and Electronics, RAS, Saratov Branch, Saratov, Russia
| | - Gennady L Burygin
- Institute of Biochemistry and Physiology of Plants and Microorganisms, RAS, Saratov, Russia
| | - Olga A Karavaeva
- Institute of Biochemistry and Physiology of Plants and Microorganisms, RAS, Saratov, Russia
| | - Alexander S Fomin
- Institute of Biochemistry and Physiology of Plants and Microorganisms, RAS, Saratov, Russia
| | - Sergey A Staroverov
- Institute of Biochemistry and Physiology of Plants and Microorganisms, RAS, Saratov, Russia
| | - Irina A Borodina
- Kotel'nikov Institute of Radio Engineering and Electronics, RAS, Saratov Branch, Saratov, Russia
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Borodina IA, Zaitsev BD, Guliy O, Teplykh AA, Shikhabudinov AM. The acoustic sensor for rapid analysis of bacterial cells in the conductive suspensions. Ultrasonics 2017; 81:174-177. [PMID: 28709011 DOI: 10.1016/j.ultras.2017.07.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 07/04/2017] [Accepted: 07/05/2017] [Indexed: 06/07/2023]
Abstract
The possibility of using the acoustic sensor on the basis of a two-channel delay line for rapid analysis of bacterial cells in the conductive suspensions was investigated. The dependencies of change in phase and insertion loss of output signal of the sensor on conductivity of buffer solution with various concentrations of cells due to a specific interaction "bacterial cells - mini-antibodies" for electrically open and electrically shorted channels of delay line were measured. It has been found that these changes have the most values for the electrically open channel. It has been also shown that the sensor rapidly responds to the specific interaction and the time stabilization of the phase and insertion loss of output signal is less than 10min.
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Affiliation(s)
- I A Borodina
- Kotel'nikov Institute of Radio Engineering and Electronics of RAS, Saratov Branch, Saratov 410019, Russia.
| | - B D Zaitsev
- Kotel'nikov Institute of Radio Engineering and Electronics of RAS, Saratov Branch, Saratov 410019, Russia
| | - O Guliy
- Institute of Biochemistry and Physiology of Plants and Microorganisms of RAS, Saratov 410049, Russia
| | - A A Teplykh
- Kotel'nikov Institute of Radio Engineering and Electronics of RAS, Saratov Branch, Saratov 410019, Russia
| | - A M Shikhabudinov
- Kotel'nikov Institute of Radio Engineering and Electronics of RAS, Saratov Branch, Saratov 410019, Russia
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Guliy ОI, Zaitsev BD, Borodina IA, Shikhabudinov АМ, Teplykh AA, Staroverov SA, Fomin AS. The biological acoustic sensor to record the interactions of the microbial cells with the phage antibodies in conducting suspensions. Talanta 2017; 178:569-576. [PMID: 29136863 DOI: 10.1016/j.talanta.2017.09.076] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 09/20/2017] [Accepted: 09/28/2017] [Indexed: 12/22/2022]
Abstract
The acoustic biological sensor for the analysis of the bacterial cells in conducting suspension was developed. The sensor represented the two channel delay line based on the piezoelectric plate of Y-X lithium niobate thick of 0.2mm. Two pairs of the interdigital transducers (IDT) for the excitation and reception of shear horizontal acoustic wave of zero order (SH0) in each channel were deposited by the method of photolithography. One channel of the delay line was electrically shorted by the deposition of thin aluminum film between IDTs. The second channel remained as electrically open. The liquid container with the volume of 5ml was fixed on the plate surface between IDTs by the glue, which did not cause the additional insertion loss. For the first time the influence of the conductivity of the cell suspension on the registration of the specific and nonspecific interactions of the bacterial cells with phage-antibodies (phage-Abs) was studied by means of the developed sensor. The dependencies of the change in insertion loss and phase of the output signal on the conductivity of the buffer solution at specific/nonspecific interactions for the electrically open and shorted channels of the delay line were obtained. It was shown that the sensor successfully registered the interactions of microbial cells with phage-Abs in the range of the conductivity of 2-20 μS/cm on the model samples A. brasilense Sp245 - specific phage-Abs. The sensor in the time regime of the operation fast reacted on the specific/nonspecific interaction and the time of the stabilization of the output parameters did not exceed 10min.
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Affiliation(s)
- О I Guliy
- Institute of Biochemistry & Physiology of Plants & Microorganisms RAS, 13 Prospect Enthusiastic, Saratov 410049, Russia; Saratov State Agrarian University, Saratov 410012, Russia; Scientific Research Veterinary Institute, Saratov 410028, Russia.
| | - B D Zaitsev
- Kotel'nikov Institute of Radio Engineering and Electronics RAS, Saratov Branch, Saratov 410019, Russia
| | - I A Borodina
- Kotel'nikov Institute of Radio Engineering and Electronics RAS, Saratov Branch, Saratov 410019, Russia
| | - А М Shikhabudinov
- Kotel'nikov Institute of Radio Engineering and Electronics RAS, Saratov Branch, Saratov 410019, Russia
| | - A A Teplykh
- Kotel'nikov Institute of Radio Engineering and Electronics RAS, Saratov Branch, Saratov 410019, Russia
| | - S A Staroverov
- Scientific Research Veterinary Institute, Saratov 410028, Russia
| | - A S Fomin
- Institute of Biochemistry & Physiology of Plants & Microorganisms RAS, 13 Prospect Enthusiastic, Saratov 410049, Russia; Scientific Research Veterinary Institute, Saratov 410028, Russia
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Guerrero-Molina MF, Lovaisa NC, Salazar SM, Martínez-Zamora MG, Díaz-Ricci JC, Pedraza RO. Physiological, structural and molecular traits activated in strawberry plants after inoculation with the plant growth-promoting bacterium Azospirillum brasilense REC3. Plant Biol (Stuttg) 2015; 17:766-773. [PMID: 25280241 DOI: 10.1111/plb.12270] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 09/22/2014] [Indexed: 06/03/2023]
Abstract
The plant growth-promoting strain REC3 of Azospirillum brasilense, isolated from strawberry roots, prompts growth promotion and systemic protection against anthracnose disease in this crop. Hence, we hypothesised that A. brasilense REC3 can induce different physiological, structural and molecular responses in strawberry plants. Therefore, the aim of this work was to study these traits activated in Azospirillum-colonised strawberry plants, which have not been assessed until now. Healthy, in vitro micropropagated plants were root-inoculated with REC3 under hydroponic conditions; root and leaf tissues were sampled at different times, and oxidative burst, phenolic compound content, malondialdehyde (MDA) concentration, callose deposition, cell wall fortification and gene expression were evaluated. Azospirillum inoculation enhanced levels of soluble phenolic compounds after 12 h post-inoculation (hpi), while amounts of cell wall bound phenolics were similar in inoculated and control plants. Other early responses activated by REC3 (at 24 hpi) were a decline of lipid peroxidation and up-regulation of strawberry genes involved in defence (FaPR1), bacterial recognition (FaFLS2) and H₂O₂ depuration (FaCAT and FaAPXc). The last may explain the apparent absence of oxidative burst in leaves after bacterial inoculation. Also, REC3 inoculation induced delayed structural responses such as callose deposition and cell wall fortification (at 72 hpi). Results showed that A. brasilense REC3 is capable of exerting beneficial effects on strawberry plants, reinforcing their physiological and cellular characteristics, which in turns contribute to improve plant performance.
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Affiliation(s)
- M F Guerrero-Molina
- Facultad de Agronomía y Zootecnia, Universidad Nacional de Tucumán, San Miguel de Tucumán, Tucumán, Argentina; Facultad de Bioquímica, Química y Farmacia, Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET-UNT, and Instituto de Química Biológica "Dr. Bernabé Bloj", San Miguel de Tucumán, Tucumán, Argentina
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Santos F, Peñaflor MFGV, Paré PW, Sanches PA, Kamiya AC, Tonelli M, Nardi C, Bento JMS. A novel interaction between plant-beneficial rhizobacteria and roots: colonization induces corn resistance against the root herbivore Diabrotica speciosa. PLoS One 2014; 9:e113280. [PMID: 25405495 PMCID: PMC4236168 DOI: 10.1371/journal.pone.0113280] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 10/22/2014] [Indexed: 11/19/2022] Open
Abstract
A number of soil-borne microorganisms, such as mycorrhizal fungi and rhizobacteria, establish mutualistic interactions with plants, which can indirectly affect other organisms. Knowledge of the plant-mediated effects of mutualistic microorganisms is limited to aboveground insects, whereas there is little understanding of what role beneficial soil bacteria may play in plant defense against root herbivory. Here, we establish that colonization by the beneficial rhizobacterium Azospirillum brasilense affects the host selection and performance of the insect Diabrotica speciosa. Root larvae preferentially orient toward the roots of non-inoculated plants versus inoculated roots and gain less weight when feeding on inoculated plants. As inoculation by A. brasilense induces higher emissions of (E)-β-caryophyllene compared with non-inoculated plants, it is plausible that the non-preference of D. speciosa for inoculated plants is related to this sesquiterpene, which is well known to mediate belowground insect-plant interactions. To the best of our knowledge, this is the first study showing that a beneficial rhizobacterium inoculant indirectly alters belowground plant-insect interactions. The role of A. brasilense as part of an integrative pest management (IPM) program for the protection of corn against the South American corn rootworm, D. speciosa, is considered.
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Affiliation(s)
- Franciele Santos
- Department of Entomology and Acarology, University of São Paulo, Escola Superior de Agricultura “Luiz de Queiroz”, Piracicaba, SP, Brazil
| | - Maria Fernanda G. V. Peñaflor
- Department of Entomology and Acarology, University of São Paulo, Escola Superior de Agricultura “Luiz de Queiroz”, Piracicaba, SP, Brazil
| | - Paul W. Paré
- Departments of Chemistry and Biology, Texas Tech University, Lubbock, TX, USA
| | - Patrícia A. Sanches
- Department of Entomology and Acarology, University of São Paulo, Escola Superior de Agricultura “Luiz de Queiroz”, Piracicaba, SP, Brazil
| | - Aline C. Kamiya
- Department of Entomology and Acarology, University of São Paulo, Escola Superior de Agricultura “Luiz de Queiroz”, Piracicaba, SP, Brazil
| | - Mateus Tonelli
- Department of Entomology and Acarology, University of São Paulo, Escola Superior de Agricultura “Luiz de Queiroz”, Piracicaba, SP, Brazil
- Department of Agronomy, Mid-West State University, Guarapuava, PR, Brazil
| | - Cristiane Nardi
- Department of Agronomy, Mid-West State University, Guarapuava, PR, Brazil
| | - José Mauricio S. Bento
- Department of Entomology and Acarology, University of São Paulo, Escola Superior de Agricultura “Luiz de Queiroz”, Piracicaba, SP, Brazil
- * E-mail:
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Ravikumar S, Ignatiammal STM, Gnanadesigan M, Kalaiarasi A. Effects of saline tolerant Azospirillum species on the growth parameters of mangrove seedlings. J Environ Biol 2012; 33:933-939. [PMID: 23734462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Five species of Azospirillum isolated from Manakkudi mangrove ecosystem were subjected for their efficiency to find out their growth parameters potential for the successful establishment of mangrove seedlings. Of the isolated five Azospirillum species, Azospirillum lipoferum (60%) was found to be the dominant one. But the level of maximum indole acetic acid (IAA) production (19.8 mg.ml(-1)) and nitrogen fixation (5.9 C2H2hr1) was identified with A. brasilense. Further, A. brasilense showed significant (p < 0.05) level of increased growth parameters [maximum root length (29.55%), average root length (7.39%), total Chl (55.36%), carrotenoids (28.57%), Chl b (37.50%), carbohydrates (90.91%) and total amino acids (78.95%)] in Avicennia officinals when compared with control group. Further, A. brasilense also showed significant (p < 0.05) level of increased growth parameters [average number of primary roots (40%), average biomass (44.44%), average shoot biomass (55.56%), total Chl (20%), Chl b (77.78%) and carotenoid (1.54%)] in C. decandra seedlings when compared with control group. Similarly, the average number of primary roots (23.08%), average root biomass (15.52%), average shoot biomass (15.30%), carbohydrate (20%) and total amino acids (44.44%) were found significant (p < 0.05) in A. irakense inoculated R. apiculata seedlings. In conclusion, Azospirillum brasilense was found better for the growth of Avicennia officinalis and Ceriops decandra seedlings, but Azospirillum irakense was found better for Rhizophora apiculata seedlings.
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Affiliation(s)
- S Ravikumar
- School of Marine Science, Department of Oceanography and Coastal Area Studies, Alagappa University, Thondi--623 409, India.
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Sabir A, Yazici MA, Kara Z, Sahin F. Growth and mineral acquisition response of grapevine rootstocks (Vitis spp.) to inoculation with different strains of plant growth-promoting rhizobacteria (PGPR). J Sci Food Agric 2012; 92:2148-2153. [PMID: 22307541 DOI: 10.1002/jsfa.5600] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Revised: 11/17/2011] [Accepted: 12/19/2011] [Indexed: 05/31/2023]
Abstract
BACKGROUND Effects of the plant growth-promoting rhizobacteria (PGPR) strains Burkholderia gladii BA-7, Bacillus subtilis OSU-142, Bacillus megatorium M-3 and Azospirillum brasilense Sp 245 on vegetative development and mineral uptake of 1103 P and 41 B grapevine rootstocks were investigated. The roots of nursery plants of the grapevine rootstocks were immersed in bacterial solutions and transplanted to a sterilised peat and perlite mixture in 5 L pots. Plants were cultivated in a semi-controlled glasshouse during the vegetation period. RESULTS Vegetative development of grapevine rootstocks was obviously promoted by bacterial inoculation, with the maximum increase induced by Sp 245. Inoculation with Sp 245 also significantly improved the chlorophyll concentrations of the leaves of the two rootstocks. Among the bacteria, OSU-142 also significantly stimulated vegetative development and mineral acquisition of the plants. Nutrient contents of the leaf blades of the plants were generally higher than those of control plants. CONCLUSION Overall investigations revealed that A. brasilense Sp 245 and B. subtilis OSU-142 performed more efficiently than the other strains. Therefore these bacteria seem to have considerable potential in reducing the need for inorganic fertiliser.
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Affiliation(s)
- Ali Sabir
- Horticulture Department, Faculty of Agriculture, Selcuk University, 42075 Konya, Turkey.
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Pereyra CM, Ramella NA, Pereyra MA, Barassi CA, Creus CM. Changes in cucumber hypocotyl cell wall dynamics caused by Azospirillum brasilense inoculation. Plant Physiol Biochem 2010; 48:62-69. [PMID: 19875302 DOI: 10.1016/j.plaphy.2009.10.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2009] [Revised: 10/01/2009] [Accepted: 10/02/2009] [Indexed: 05/28/2023]
Abstract
We previously reported that Azospirillum brasilense induced a more elastic cell wall and a higher apoplastic water fraction in both wheat coleoptile and flag leaf. These biophysical characteristics could permit increased growth. Knowledge of the biochemical effects the bacteria could elicit in plant cell walls and how these responses change plant physiology is still scarce. The objective of this work was to analyze whether A. brasilense Sp245 inoculation affected elongation and extensibility of growing cucumber (Cucumis sativus) hypocotyls and ionically bound cell wall peroxidase activities. Hypocotyl tip and basal segments were excised from A. brasilense Sp245-inoculated cucumber seedlings growing in darkness under hydroponic conditions. Elongation, cell wall extensibility, cell wall peroxidase activities against ferulic acid and guaiacol and NADH oxidase activities were analyzed. Azospirillum-inoculated cucumber seedlings grew bigger than non-inoculated ones. Dynamic cell wall differences were detected between inoculated and non-inoculated hypocotyls. They included greater acid-induced cell wall extension and in vivo elongation when incubated in distilled water. Although there was no difference between treatments in either region of the hypocotyl NADH oxidase and ferulic acid peroxidase activities were lower in both regions in inoculated seedlings. These lesser activities could be delaying the stiffening of cell wall in inoculated seedlings. These results showed that the cell wall is a target for A. brasilense growth promotion.
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Affiliation(s)
- Cintia M Pereyra
- Area Biomolecular, Unidad Integrada Facultad de Ciencias Agrarias de la Universidad Nacional de Mar del Plata-E.E.A, INTA (Balcarce), CC 276 (7620) Balcarce, Buenos Aires, Argentina
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Alen'kina SA, Zharkova VR, Nikitina VE. [Stabilizing effect of Azospirillum lectins on beta-glucosidase activity]. Prikl Biokhim Mikrobiol 2007; 43:653-656. [PMID: 18173106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Lectins from the surface of Azospirillum brasilense Sp7 and Azospirillumn brasilense Sp7.2.3 (a mutant with impaired lectin activity) were shown to induce a stabilizing effect on the activity of almond beta-glucosidase under conditions of thermoinactivation and proteolytic enzyme treatment. Differences were revealed in the influence of lectins with various antigenic properties. Our results indicate that the effects of lectins on the catalytic activity of the enzyme are mainly associated with conformational changes in lectin molecules during mutagenesis, but not with carbohydrate specificity (general property). These data should be taken into account in evaluating the role of lectins in the formation of nitrogen-fixing associations.
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Ponomareva EG, Emel'ianova NV, Nikitina VE, Zakharova NB. [Impact of bacterial lectin on functional activity of lymphocytes]. Zh Mikrobiol Epidemiol Immunobiol 2007:60-5. [PMID: 17523482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Impact of Azospirillum brasilense Sp7 lectin with carbohydrate specificity to L-fucose on T- and B-lymphocytes production, activity of IL-1alpha, and TNF-alpha was studied in vitro and compared with influence of red kidney bean phytohemagglutinin (PHA) on the same parameters. Increase of growth of T- and B-cells subpopulations has been shown that point to stimulatory effect of the bacterial lectin. Bacterial lectin of A. brasilense also increased synthesis of IL-1alpha and TNF-alpha. It has been shown that the bacterial lectin has more pronounced stimulatory effect on functional activity of lymphocytes compared with PHA.
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Khlebtsov BN, Burygin GL, Matora LY, Shchyogolev SY, Khlebtsov NG. A method for studying insoluble immune complexes. Biochim Biophys Acta Gen Subj 2004; 1670:199-207. [PMID: 14980446 DOI: 10.1016/j.bbagen.2003.12.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2003] [Revised: 12/17/2003] [Accepted: 12/17/2003] [Indexed: 10/26/2022]
Abstract
Two variants of a method for determining the average composition of insoluble immune complex particles (IICP) are described. The first variant is based on measuring the specific turbidity (the turbidity per unit mass concentration of the dispersed substance) and the average size of IICP determined from dynamic light scattering (DLS). In the second variant, the slope of the logarithmic turbidity spectrum (wavelength exponent) is used instead of DLS particle size. Both variants allow the average biopolymer volume fraction to be determined in terms of the average refractive index of IICP. The method is exemplified by two experimental antigen+antibody systems: (i) lipopolysaccharide-protein complex (LPPC) of Azospirillum brasilense Sp245+rabbit anti-LPPC; and (ii) human IgG (hIgG)+sheep anti-hIgG. We have found that IICP can be modeled by incompact porous particles that contain about 30% of biopolymer substance and 70% of buffer.
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Affiliation(s)
- Boris N Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Pr. Entuziastov, Saratov 410049, Russia.
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Nikitina VE, Bugaeva IO, Ponomareva EG, Tikhomirova EI, Bogomolova NV. [Effect of Azospirillum brasilense lectin on the kinetics of lymph nodes cell populations and cytokine status in experimental animals]. Zh Mikrobiol Epidemiol Immunobiol 2002:37-42. [PMID: 11949252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
The complex study of the influence of A. brasilense Sp 7 lectin with carbohydrate specificity to L-fucose and D-galactose on the dynamics of cell populations in different structural functional zones of the white mice mesentery, as well as on the capacity of immunocompetent cells of mesenterial lymph nodes for synthesizing cytokines (interleukin-1, interleukin-6 and tumor necrosis factor), was carried out. A single oral administration of bacterial lectin in a dose of 4.5 micrograms produced a pronounced immunostimulating effect.
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Affiliation(s)
- V E Nikitina
- Institute of Biochemistry and Physiology of Plants and Microorganisms, State Medical University, Chernyshevsky State University, Saratov
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