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Devi R, Kaur T, Negi R, Kour D, Kumar S, Yadav A, Singh S, Chaubey KK, Rai AK, Shreaz S, Yadav AN. Bioformulation of mineral solubilizing microbes as novel microbial consortium for the growth promotion of wheat ( Triticum aestivum) under the controlled and natural conditions. Heliyon 2024; 10:e33167. [PMID: 38948031 PMCID: PMC11211892 DOI: 10.1016/j.heliyon.2024.e33167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 06/07/2024] [Accepted: 06/14/2024] [Indexed: 07/02/2024] Open
Abstract
Microbes are a worthwhile organism of the earth that could be formulated as consortium which can be utilized as biofertilizers. Consortium-based bioinoculants or biofertilizers are superior to single strain-based inoculants for sustainable agricultural productivity and increased micronutrient content in yield. The aim of present study was to evaluate the effect of different combinations of beneficial bacteria that are more effective than single-based bioinoculants. The current work focuses on the isolation of rhizospheric microorganisms from various cereals and pseudocereal crops and the development of a single inoculum as well as a bacterial consortium which were evaluated on wheat crop. A total 214 rhizospheric bacteria were sorted out and, screened for mineral solubilizing attributes i.e., phosphorus, potassium, zinc and selenium solubilization. Among all the bacterial isolates, four potential strains exhibiting P, K, Zn and Se-solubilizing attributes were identified with the help of 16S rRNA gene sequencing as Rahnella aquatilis EU-A3Rb1, Erwinia aphidicola EU-A2RNL1, Brevibacillus brevis EU-C3SK2, and Bacillus mycoides EU-WRSe4, respectively. The identified strains formulated as a consortium which were found to improve the plant growth and physiological parameters in comparison to single culture inoculants and control. To the best of our knowledge, the present investigation is the first report that has developed the consortium from bacterial strains Rahnella aquatilis EU-A3Rb1, Erwinia aphidicola EU-A2RNL1, Brevibacillus brevis EU-C3SK2, and Bacillus mycoides EU-WRSe4. A combination of bacterial strains could be used as liquid inoculants for cereal crops growing in mountainous regions.
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Affiliation(s)
- Rubee Devi
- Department of Genetics, Plant Breeding and Biotechnology, Dr. Khem Singh Gill Akal College of Agriculture, Eternal University, Baru Sahib, Sirmour,173101, Himachal Pradesh, India
| | - Tanvir Kaur
- Department of Genetics, Plant Breeding and Biotechnology, Dr. Khem Singh Gill Akal College of Agriculture, Eternal University, Baru Sahib, Sirmour,173101, Himachal Pradesh, India
| | - Rajeshwari Negi
- Department of Genetics, Plant Breeding and Biotechnology, Dr. Khem Singh Gill Akal College of Agriculture, Eternal University, Baru Sahib, Sirmour,173101, Himachal Pradesh, India
| | - Divjot Kour
- Department of Microbiology, Akal College of Basic Sciences, Eternal University, Baru Sahib, Sirmour, 173101, Himachal Pradesh, India
| | - Sanjeev Kumar
- Department of Genetics and Plant Breeding, Faculty of Agricultural Science, GLA university, Mathura, Uttar Pradesh, India
| | - Ashok Yadav
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Sangram Singh
- Department of Biochemistry, Dr. Ram Manohar Lohia Avadh University, Faizabad, Uttar Pradesh, India
| | - Kundan Kumar Chaubey
- Division of Research and Innovation, School of Applied and Life Sciences, Uttaranchal University, Premnagar, Dehradun, Uttarakhand, 248007, India
| | - Ashutosh Kumar Rai
- Department of Biochemistry, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, 31441, Kingdom of Saudi Arabia
| | - Sheikh Shreaz
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, PO Box 24885, 13109, Safat, Kuwait
| | - Ajar Nath Yadav
- Department of Genetics, Plant Breeding and Biotechnology, Dr. Khem Singh Gill Akal College of Agriculture, Eternal University, Baru Sahib, Sirmour,173101, Himachal Pradesh, India
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Williams A, Sinanaj B, Hoysted GA. Plant-microbe interactions through a lens: tales from the mycorrhizosphere. ANNALS OF BOTANY 2024; 133:399-412. [PMID: 38085925 PMCID: PMC11006548 DOI: 10.1093/aob/mcad191] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 12/11/2023] [Indexed: 04/12/2024]
Abstract
BACKGROUND The soil microbiome plays a pivotal role in maintaining ecological balance, supporting food production, preserving water quality and safeguarding human health. Understanding the intricate dynamics within the soil microbiome necessitates unravelling complex bacterial-fungal interactions (BFIs). BFIs occur in diverse habitats, such as the phyllosphere, rhizosphere and bulk soil, where they exert substantial influence on plant-microbe associations, nutrient cycling and overall ecosystem functions. In various symbiotic associations, fungi form mycorrhizal connections with plant roots, enhancing nutrient uptake through the root and mycorrhizal pathways. Concurrently, specific soil bacteria, including mycorrhiza helper bacteria, play a pivotal role in nutrient acquisition and promoting plant growth. Chemical communication and biofilm formation further shape plant-microbial interactions, affecting plant growth, disease resistance and nutrient acquisition processes. SCOPE Promoting synergistic interactions between mycorrhizal fungi and soil microbes holds immense potential for advancing ecological knowledge and conservation. However, despite the significant progress, gaps remain in our understanding of the evolutionary significance, perception, functional traits and ecological relevance of BFIs. Here we review recent findings obtained with respect to complex microbial communities - particularly in the mycorrhizosphere - and include the latest advances in the field, outlining their profound impacts on our understanding of ecosystem dynamics and plant physiology and function. CONCLUSIONS Deepening our understanding of plant BFIs can help assess their capabilities with regard to ecological and agricultural safe-guarding, in particular buffering soil stresses, and ensuring sustainable land management practices. Preserving and enhancing soil biodiversity emerge as critical imperatives in sustaining life on Earth amidst pressures of anthropogenic climate change. A holistic approach integrates scientific knowledge on bacteria and fungi, which includes their potential to foster resilient soil ecosystems for present and future generations.
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Affiliation(s)
- Alex Williams
- Plants, Photosynthesis and Soil, School of Bioscience, University of Sheffield, Sheffield, S10 2TN, UK
| | - Besiana Sinanaj
- Plants, Photosynthesis and Soil, School of Bioscience, University of Sheffield, Sheffield, S10 2TN, UK
| | - Grace A Hoysted
- Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland
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Bacteria isolated from cultivated soil after liming promote seed germination and seedling growth of crop plants. CURRENT RESEARCH IN BIOTECHNOLOGY 2022. [DOI: 10.1016/j.crbiot.2021.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Azaroual SE, Hazzoumi Z, Mernissi NE, Aasfar A, Meftah Kadmiri I, Bouizgarne B. Role of Inorganic Phosphate Solubilizing Bacilli Isolated from Moroccan Phosphate Rock Mine and Rhizosphere Soils in Wheat (Triticum aestivum L) Phosphorus Uptake. Curr Microbiol 2020; 77:2391-2404. [PMID: 32468184 DOI: 10.1007/s00284-020-02046-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 05/20/2020] [Indexed: 01/19/2023]
Abstract
This work aimed to assess the ability of plant growth-promoting Bacilli isolated from wheat rhizosphere and rock phosphate mine soils to convert inorganic phosphate (Pi) from Moroccan natural phosphate (NP) to soluble forms. The effect of these bacteria on wheat plants in order to increase their phosphorus (P) uptake in vitro was also investigated. Bacteria were isolated from wheat rhizosphere and natural rock phosphate soils and screened for their ability to solubilize Tri-Calcium Phosphate (TCP) and Natural Rock Phosphate (NP), to produce indole-3-acetic acid (IAA), siderophores and 1-aminocyclopropane-1-carboxylate (ACC) deaminase. Isolates were identified by 16S rRNA sequencing and tested for their capacity to increase wheat plants growth and their phosphorus uptake.Twenty-four strains belonging to Bacillus genus isolated from both biotopes were screened for their ability to solubilize Pi. The highest NP solubilization was showed by strains isolated from wheat rhizosphere. Solubilization of Pi was accompanied by organic acid production. Strains produce IAA, siderophore and ACC deaminase. Inoculation assays using efficient NP-solubilizing bacilli strains from both sources showed the ability of these isolates to increase wheat growth and the phosphorus uptake under in vitro conditions. Bacilli strains isolated from rhizosphere soil and natural rock phosphorus soil showed effective solubilization of Pi from rock phosphate. Phosphate solubilizing Bacilli were evaluated for their plant growth promotion under in vitro conditions. Results revealed the positive effect of all strains on biometric parameters and P content of wheat seedlings.
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Affiliation(s)
- Salah Eddine Azaroual
- Team: Microbial Biotechnology, Laboratory : Plant Biotechnology, Faculty of Sciences, Ibn Zohr University, Cité Dakhla, BP 8106, Agadir, Morocco.,Green Biotechnology Laboratory, Moroccan Foundation For Advanced Science Innovation and Research- Rue Mohammed Al Jazouli, Madinat Al Irfan, Rabat, Morocco
| | - Zakaria Hazzoumi
- Green Biotechnology Laboratory, Moroccan Foundation For Advanced Science Innovation and Research- Rue Mohammed Al Jazouli, Madinat Al Irfan, Rabat, Morocco
| | - Najib El Mernissi
- Green Biotechnology Laboratory, Moroccan Foundation For Advanced Science Innovation and Research- Rue Mohammed Al Jazouli, Madinat Al Irfan, Rabat, Morocco
| | - Abderrahim Aasfar
- Green Biotechnology Laboratory, Moroccan Foundation For Advanced Science Innovation and Research- Rue Mohammed Al Jazouli, Madinat Al Irfan, Rabat, Morocco
| | - Issam Meftah Kadmiri
- Green Biotechnology Laboratory, Moroccan Foundation For Advanced Science Innovation and Research- Rue Mohammed Al Jazouli, Madinat Al Irfan, Rabat, Morocco.
| | - Brahim Bouizgarne
- Team: Microbial Biotechnology, Laboratory : Plant Biotechnology, Faculty of Sciences, Ibn Zohr University, Cité Dakhla, BP 8106, Agadir, Morocco.
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Li Y, Zeng J, Wang S, Lin Q, Ruan D, Chi H, Zheng M, Chao Y, Qiu R, Yang Y. Effects of cadmium-resistant plant growth-promoting rhizobacteria and Funneliformis mosseae on the cadmium tolerance of tomato ( Lycopersicon esculentum L.). INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 22:451-458. [PMID: 31564121 DOI: 10.1080/15226514.2019.1671796] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Microorganisms are used to alleviate heavy metal stress in plants cultivated in contaminated fields. However, the relevant mechanisms have been rarely explored. The goal of this study was to investigate effects of arbuscular mycorrhizal fungus Funneliformis mosseae and two Cd-resistant bacterial strains (Enterobacter sp. EG16 and Enterobacter ludwigii DJ3) on growth and Cd tolerance of tomato when applied with different inoculation strategies (single or dual) and Cd concentrations (50 and 100 mg kg-1). Better plant growth was observed in mycorrhizal alone or combined treatments. In F. mosseae and EG16 co-inoculation treatment, shoot and root dry weight were 119-154% and 91-173% higher than those of the control, respectively. Higher bacterial and mycorrhizal colonization rate and root Cd concentration were also found in this treatment. However, the decrease of shoot Cd concentration and translocation factor values indicated this treatment was effective in improving Cd tolerance of the host plants. In addition, the increase in soil pH and decline in bioavailable Cd in the rhizosphere might be partly involved in reduction of Cd accumulation in plants. Our results suggest that co-inoculation with suitable microorganisms is important in plant growth and tolerance to Cd in Cd-contaminated soil.
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Affiliation(s)
- Yuanyuan Li
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
| | - Jiahui Zeng
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
| | - Shizhong Wang
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
- Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Guangzhou, China
- Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, Guangzhou, China
| | - Qingqi Lin
- School of Geography and Planning, Sun Yat-Sen University, Guangzhou, China
| | - Dishen Ruan
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
| | - Haochun Chi
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
| | - Mengyuan Zheng
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
| | - Yuanqing Chao
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
- Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Guangzhou, China
- Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, Guangzhou, China
| | - Rongliang Qiu
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
- Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Guangzhou, China
- Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, Guangzhou, China
| | - Yanhua Yang
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
- Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Guangzhou, China
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Armada E, Leite MFA, Medina A, Azcón R, Kuramae EE. Native bacteria promote plant growth under drought stress condition without impacting the rhizomicrobiome. FEMS Microbiol Ecol 2018; 94:4996783. [DOI: 10.1093/femsec/fiy092] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 05/13/2018] [Indexed: 12/20/2022] Open
Affiliation(s)
- Elisabeth Armada
- Estación Experimental del Zaidín, CSIC, Departamento de Microbiología del Suelo y Sistemas Simbióticos, Prof. Albareda 1, 18008, Granada, Spain
| | - Márcio F A Leite
- Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Ecology, Droevendaalsesteeg 10, 6708 PB, Wageningen, The Netherlands
- Leiden University, Department of Biology, Leiden, 2311 EZ, The Netherlands
- Maranhão State University (UEMA), department of Agroecology, São Luís, Brazil
| | - Almudena Medina
- Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Ecology, Droevendaalsesteeg 10, 6708 PB, Wageningen, The Netherlands
| | - Rosario Azcón
- Estación Experimental del Zaidín, CSIC, Departamento de Microbiología del Suelo y Sistemas Simbióticos, Prof. Albareda 1, 18008, Granada, Spain
| | - Eiko E Kuramae
- Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Ecology, Droevendaalsesteeg 10, 6708 PB, Wageningen, The Netherlands
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Armada E, Probanza A, Roldán A, Azcón R. Native plant growth promoting bacteria Bacillus thuringiensis and mixed or individual mycorrhizal species improved drought tolerance and oxidative metabolism in Lavandula dentata plants. JOURNAL OF PLANT PHYSIOLOGY 2016; 192:1-12. [PMID: 26796423 DOI: 10.1016/j.jplph.2015.11.007] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 11/19/2015] [Accepted: 11/20/2015] [Indexed: 05/04/2023]
Abstract
This study evaluates the responses of Lavandula dentata under drought conditions to the inoculation with single autochthonous arbuscular mycorrhizal (AM) fungus (five fungal strains) or with their mixture and the effects of these inocula with a native Bacillus thuringiensis (endophytic bacteria). These microorganisms were drought tolerant and in general, increased plant growth and nutrition. Particularly, the AM fungal mixture and B. thuringiensis maximized plant biomass and compensated drought stress as values of antioxidant activities [superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase APX)] shown. The AMF-bacteria interactions highly reduced the plant oxidative damage of lipids [malondialdehyde (MDA)] and increased the mycorrhizal development (mainly arbuscular formation representative of symbiotic functionality). These microbial interactions explain the highest potential of dually inoculated plants to tolerate drought stress. B. thuringiensis "in vitro" under osmotic stress does not reduce its PGPB (plant growth promoting bacteria) abilities as indole acetic acid (IAA) and ACC deaminase production and phosphate solubilization indicating its capacity to improve plant growth under stress conditions. Each one of the autochthonous fungal strains maintained their particular interaction with B. thuringiensis reflecting the diversity, intrinsic abilities and inherent compatibility of these microorganisms. In general, autochthonous AM fungal species and particularly their mixture with B. thuringiensis demonstrated their potential for protecting plants against drought and helping plants to thrive in semiarid ecosystems.
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Affiliation(s)
- E Armada
- Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, CSIC, Prof. Albareda 1, 18008 Granada, Spain.
| | - A Probanza
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo CEU, 28668 Boadilla del Monte, Madrid, Spain.
| | - A Roldán
- CSIC-Centro de Edafología y Biología Aplicada del Segura, Department of Soil and Water Conservation, P.O. Box 164, Campus de Espinardo, 30100 Murcia, Spain.
| | - R Azcón
- Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, CSIC, Prof. Albareda 1, 18008 Granada, Spain.
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Kurth F, Feldhahn L, Bönn M, Herrmann S, Buscot F, Tarkka MT. Large scale transcriptome analysis reveals interplay between development of forest trees and a beneficial mycorrhiza helper bacterium. BMC Genomics 2015; 16:658. [PMID: 26328611 PMCID: PMC4557895 DOI: 10.1186/s12864-015-1856-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 08/18/2015] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Pedunculate oak, Quercus robur is an abundant forest tree species that hosts a large and diverse community of beneficial ectomycorrhizal fungi (EMFs), whereby ectomycorrhiza (EM) formation is stimulated by mycorrhiza helper bacteria such as Streptomyces sp. AcH 505. Oaks typically grow rhythmically, with alternating root flushes (RFs) and shoot flushes (SFs). We explored the poorly understood mechanisms by which oaks integrate signals induced by their beneficial microbes and endogenous rhythmic growth at the level of gene expression. To this end, we compared transcript profiles of oak microcuttings at RF and SF during interactions with AcH 505 alone and in combination with the basidiomycetous EMF Piloderma croceum. RESULTS The local root and distal leaf responses to the microorganisms differed substantially. More genes involved in the recognition of bacteria and fungi, defence and cell wall remodelling related transcription factors (TFs) were differentially expressed in the roots than in the leaves of oaks. In addition, interaction with AcH 505 and P. croceum affected the expression of a higher number of genes during SF than during RF, including AcH 505 elicited defence response, which was attenuated by co-inoculation with P. croceum in the roots during SF. Genes encoding leucine-rich receptor-like kinases (LRR-RLKs) and proteins (LRR-RLPs), LRR containing defence response regulators, TFs from bZIP, ERF and WRKY families, xyloglucan cell wall transglycolases/hydrolases and exordium proteins were differentially expressed in both roots and leaves of plants treated with AcH 505. Only few genes, including specific RLKs and TFs, were induced in both AcH 505 and co-inoculation treatments. CONCLUSION Treatment with AcH 505 induces and maintains the expression levels of signalling genes encoding candidate receptor protein kinases and TFs and leads to differential expression of cell wall modification related genes in pedunculate oak microcuttings. Local gene expression response to AcH 505 alone and in combination with P. croceum are more pronounced when roots are in resting stages, possibly due to the fact that non growing roots re-direct their activity towards plant defence rather than growth.
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Affiliation(s)
- Florence Kurth
- UFZ - Helmholtz Centre for Environmental Research, Department of Soil Ecology, Theodor-Lieser-Str. 4, 06120, Halle/Saale, Germany.
| | - Lasse Feldhahn
- UFZ - Helmholtz Centre for Environmental Research, Department of Soil Ecology, Theodor-Lieser-Str. 4, 06120, Halle/Saale, Germany.
| | - Markus Bönn
- UFZ - Helmholtz Centre for Environmental Research, Department of Soil Ecology, Theodor-Lieser-Str. 4, 06120, Halle/Saale, Germany.
- German Centre for Integrative Biodiversity Research (iDiv) Halle - Jena - Leipzig, Deutscher Platz 5, 04103, Leipzig, Germany.
| | - Sylvie Herrmann
- UFZ - Helmholtz Centre for Environmental Research, Department of Community Ecology, Theodor-Lieser-Str. 4, 06120, Halle/Saale, Germany.
- German Centre for Integrative Biodiversity Research (iDiv) Halle - Jena - Leipzig, Deutscher Platz 5, 04103, Leipzig, Germany.
| | - François Buscot
- UFZ - Helmholtz Centre for Environmental Research, Department of Soil Ecology, Theodor-Lieser-Str. 4, 06120, Halle/Saale, Germany.
- German Centre for Integrative Biodiversity Research (iDiv) Halle - Jena - Leipzig, Deutscher Platz 5, 04103, Leipzig, Germany.
| | - Mika T Tarkka
- UFZ - Helmholtz Centre for Environmental Research, Department of Soil Ecology, Theodor-Lieser-Str. 4, 06120, Halle/Saale, Germany.
- German Centre for Integrative Biodiversity Research (iDiv) Halle - Jena - Leipzig, Deutscher Platz 5, 04103, Leipzig, Germany.
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Etesami H, Alikhani HA, Mirseyed Hosseini H. Indole-3-Acetic Acid and 1-Aminocyclopropane-1-Carboxylate Deaminase: Bacterial Traits Required in Rhizosphere, Rhizoplane and/or Endophytic Competence by Beneficial Bacteria. BACTERIAL METABOLITES IN SUSTAINABLE AGROECOSYSTEM 2015. [DOI: 10.1007/978-3-319-24654-3_8] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Kurth F, Zeitler K, Feldhahn L, Neu TR, Weber T, Krištůfek V, Wubet T, Herrmann S, Buscot F, Tarkka MT. Detection and quantification of a mycorrhization helper bacterium and a mycorrhizal fungus in plant-soil microcosms at different levels of complexity. BMC Microbiol 2013; 13:205. [PMID: 24025151 PMCID: PMC3848169 DOI: 10.1186/1471-2180-13-205] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 09/10/2013] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Host plant roots, mycorrhizal mycelium and microbes are important and potentially interacting factors shaping the performance of mycorrhization helper bacteria (MHB). We investigated the impact of a soil microbial community on the interaction between the extraradical mycelium of the ectomycorrhizal fungus Piloderma croceum and the MHB Streptomyces sp. AcH 505 in both the presence and the absence of pedunculate oak microcuttings. RESULTS Specific primers were designed to target the internal transcribed spacer of the rDNA and an intergenic region between two protein encoding genes of P. croceum and the intergenic region between the gyrA and gyrB genes of AcH 505. These primers were used to perform real-time PCR with DNA extracted from soil samples. With a sensitivity of 10 genome copies and a linear range of 6 orders of magnitude, these real-time PCR assays enabled the quantification of purified DNA from P. croceum and AcH 505, respectively. In soil microcosms, the fungal PCR signal was not affected by AcH 505 in the absence of the host plant. However, the fungal signal became weaker in the presence of the plant. This decrease was only observed in microbial filtrate amended microcosms. In contrast, the PCR signal of AcH 505 increased in the presence of P. croceum. The increase was not significant in sterile microcosms that contained plant roots. CONCLUSIONS Real-time quantitative PCR assays provide a method for directly detecting and quantifying MHB and mycorrhizal fungi in plant microcosms. Our study indicates that the presence of microorganisms and plant roots can both affect the nature of MHB-fungus interactions, and that mycorrhizal fungi may enhance MHB growth.
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Affiliation(s)
- Florence Kurth
- Department Soil Ecology, UFZ - Helmholtz Centre for Environmental Research, Theodor-Lieser-Str. 4, 06120 Halle/Saale, Germany
| | - Katharina Zeitler
- Department Soil Ecology, UFZ - Helmholtz Centre for Environmental Research, Theodor-Lieser-Str. 4, 06120 Halle/Saale, Germany
| | - Lasse Feldhahn
- Department Soil Ecology, UFZ - Helmholtz Centre for Environmental Research, Theodor-Lieser-Str. 4, 06120 Halle/Saale, Germany
| | - Thomas R Neu
- Department River Ecology, UFZ - Helmholtz Centre for Environmental Research, Brückstraße 3a, 39114 Magdeburg, Germany
| | - Tilmann Weber
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Auf der Morgenstelle 28, Tübingen, Germany
| | - Václav Krištůfek
- Biology Centre AS CR, v. v. i. - Institute of Soil Biology, Na Sádkách 7, 370 05 České Budějovice, Czech Republic
| | - Tesfaye Wubet
- Department Soil Ecology, UFZ - Helmholtz Centre for Environmental Research, Theodor-Lieser-Str. 4, 06120 Halle/Saale, Germany
- German Centre for Integrative Biodiversity Research, University of Leipzig, Deutscher Platz 5, 04103 Leipzig, Germany
| | - Sylvie Herrmann
- German Centre for Integrative Biodiversity Research, University of Leipzig, Deutscher Platz 5, 04103 Leipzig, Germany
- Department of Community Ecology, UFZ - Helmholtz Centre for Environmental Research, Theodor-Lieser-Str. 4, 06120 Halle/Saale, Germany
| | - François Buscot
- Department Soil Ecology, UFZ - Helmholtz Centre for Environmental Research, Theodor-Lieser-Str. 4, 06120 Halle/Saale, Germany
- German Centre for Integrative Biodiversity Research, University of Leipzig, Deutscher Platz 5, 04103 Leipzig, Germany
- Institute of Biology, University of Leipzig, Johannisallee 21-23, 04103 Leipzig, Germany
| | - Mika T Tarkka
- Department Soil Ecology, UFZ - Helmholtz Centre for Environmental Research, Theodor-Lieser-Str. 4, 06120 Halle/Saale, Germany
- German Centre for Integrative Biodiversity Research, University of Leipzig, Deutscher Platz 5, 04103 Leipzig, Germany
- Institute of Biology, University of Leipzig, Johannisallee 21-23, 04103 Leipzig, Germany
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Ruiz-Lozano JM, Azcón R. Brevibacillus, Arbuscular Mycorrhizae and Remediation of Metal Toxicity in Agricultural Soils. SOIL BIOLOGY 2011. [DOI: 10.1007/978-3-642-19577-8_12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Madejón E, Doronila AI, Sanchez-Palacios JT, Madejón P, Baker AJM. Arbuscular Mycorrhizal Fungi (AMF) and Biosolids Enhance the Growth of a Native Australian Grass on Sulphidic Gold Mine Tailings. Restor Ecol 2010. [DOI: 10.1111/j.1526-100x.2009.00610.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hayat R, Ali S, Amara U, Khalid R, Ahmed I. Soil beneficial bacteria and their role in plant growth promotion: a review. ANN MICROBIOL 2010. [DOI: 10.1007/s13213-010-0117-1] [Citation(s) in RCA: 599] [Impact Index Per Article: 42.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Azcón R, Perálvarez MDC, Roldán A, Barea JM. Arbuscular mycorrhizal fungi, Bacillus cereus, and Candida parapsilosis from a multicontaminated soil alleviate metal toxicity in plants. MICROBIAL ECOLOGY 2010; 59:668-77. [PMID: 20013261 DOI: 10.1007/s00248-009-9618-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2009] [Accepted: 11/08/2009] [Indexed: 05/24/2023]
Abstract
We investigated if the limited development of Trifolium repens growing in a heavy metal (HM) multicontaminated soil was increased by selected native microorganisms, bacteria (Bacillus cereus (Bc)), yeast (Candida parapsilosis (Cp)), or arbuscular mycorrhizal fungi (AMF), used either as single or dual inoculants. These microbial inoculants were assayed to ascertain whether the selection of HM-tolerant microorganisms can benefit plant growth and nutrient uptake and depress HM acquisition. The inoculated microorganisms, particularly in dual associations, increased plant biomass by 148% (Bc), 162%, (Cp), and 204% (AMF), concomitantly producing the highest symbiotic (AMF colonisation and nodulation) rates. The lack of AMF colonisation and nodulation in plants growing in this natural, polluted soil was compensated by adapted microbial inoculants. The metal bioaccumulation abilities of the inoculated microorganisms and particularly the microbial effect on decreasing metal concentrations in shoot biomass seem to be involved in such effects. Regarding microbial HM tolerance, the activities of antioxidant enzymes known to play an important role in cell protection by alleviating cellular oxidative damage, such as superoxide dismutase, catalase, glutathione reductase, and ascorbate peroxidase, were here considered as an index of microbial metal tolerance. Enzymatic mechanisms slightly changed in the HM-adapted B. cereus or C. parapsilosis in the presence of metals. Antioxidants seem to be directly involved in the adaptative microbial response and survival in HM-polluted sites. Microbial inoculations showed a bioremediation potential and helped plants to develop in the multicontaminated soil. Thus, they could be used as a biotechnological tool to improve plant development in HM-contaminated environments.
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Affiliation(s)
- Rosario Azcón
- Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), C/Profesor Albareda no. 1, 18008, Granada, Spain.
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Pan R, Cao L, Zhang R. Combined effects of Cu, Cd, Pb, and Zn on the growth and uptake of consortium of Cu-resistant Penicillium sp. A1 and Cd-resistant Fusarium sp. A19. JOURNAL OF HAZARDOUS MATERIALS 2009; 171:761-6. [PMID: 19592158 DOI: 10.1016/j.jhazmat.2009.06.080] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2009] [Revised: 06/14/2009] [Accepted: 06/15/2009] [Indexed: 05/08/2023]
Abstract
Microorganisms can be important biosorbents for heavy metal remediation of contaminated soils and wastewaters. With different types and concentrations of heavy metals, strains display different resistance and removal abilities to the heavy metals. The objective of this study was to investigate the effects of single and multiple heavy metals on the growth and uptake of consortium of two types of fungal strains, Penicillium sp. A1 and Fusarium sp. A19. These fungal strains were tested to be tolerant to several heavy metals. A1, A19, and their combination (A1+A19) were inoculated on potato dextrose agar (PDA), Czapek Dox agar (CDA), and potato dextrose broth (PDB) containing Cu(2+), Cd(2+), Pb(2+), and Zn(2+). Experimental results showed that the combined inoculation of A1 and A19 had profound effects on the growth of the two fungi in PDA and CDA under the treatments with Cu(2+) and mixed Cd(2+)+Zn(2+). The amount of metals through bioaccumulation by A1, A19, and A1+A19 was significantly higher than that through biosorption by these fungi. The highest amount of Cd, Cu, and Zn accumulated by fungal biomass was obtained in the presence of Cd(2+)+Cu(2+)+Zn(2+) in PDB. Compared with the individual A1 or A19 used in PDB, A1+A19 accumulated higher amount of Cu and Pb in the presence of Cd(2+)+Cu(2+)+Pb(2+) and higher amount of Pb in the presence of Cd(2+)+Cu(2+)+Zn(2+)+Pb(2+). Our results indicated that there was no simple relationship between the metal biosorption by fungal biomass and the fungal metal tolerance. The biomass of A1+A19 cultivated in PDB absorbed higher amount of metals than A1 or A19 in the presence of single metals and their combinations. The results suggested that the applicability of growing fungi tolerant to heavy metals provided a potential biotechnology for treatment of wastewaters with heavy metal pollutions.
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Affiliation(s)
- Rong Pan
- School of Environmental Science and Engineering, Zhongshan Sun Yat-sen University, Guangzhou 510275, PR China
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Doherty JH, Ji B, Casper BB. Testing nickel tolerance of Sorghastrum nutans and its associated soil microbial community from serpentine and prairie soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2008; 151:593-8. [PMID: 17555852 DOI: 10.1016/j.envpol.2007.04.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2006] [Revised: 03/19/2007] [Accepted: 04/08/2007] [Indexed: 05/08/2023]
Abstract
Ecotypes of Sorghastrum nutans from a naturally metalliferous serpentine grassland and the tallgrass prairie were assessed for Ni tolerance and their utility in remediation of Ni-polluted soils. Plants were inoculated with serpentine arbuscular mycorrhizal (AM) root inoculum or whole soil microbial communities, originating from either prairie or serpentine, to test their effects on plant performance in the presence of Ni. Serpentine plants had marginally higher Ni tolerance as indicated by higher survival. Ni reduced plant biomass and AM root colonization for both ecotypes. The serpentine AM fungi and whole microbial community treatments decreased plant biomass relative to uninoculated plants, while the prairie microbial community had no effect. Differences in how the soil communities affect plant performance were not reflected in patterns of root colonization by AM fungi. Thus, serpentine plants may be suited for reclamation of Ni-polluted soils, but AM fungi that occur on serpentine do not improve Ni tolerance.
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Affiliation(s)
- Jennifer H Doherty
- Department of Biology, University of Pennsylvania, Philadelphia, PA 19104-6018, USA.
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Abstract
In natural conditions, mycorrhizal fungi are surrounded by complex microbial communities, which modulate the mycorrhizal symbiosis. Here, the focus is on the so-called mycorrhiza helper bacteria (MHB). This concept is revisited, and the distinction is made between the helper bacteria, which assist mycorrhiza formation, and those that interact positively with the functioning of the symbiosis. After considering some examples of MHB from the literature, the ecological and evolutionary implications of the relationships of MHB with mycorrhizal fungi are discussed. The question of the specificity of the MHB effect is addressed, and an assessment is made of progress in understanding the mechanisms of the MHB effect, which has been made possible through the development of genomics. Finally, clear evidence is presented suggesting that some MHB promote the functioning of the mycorrhizal symbiosis. This is illustrated for three critical functions of practical significance: nutrient mobilization from soil minerals, fixation of atmospheric nitrogen, and protection of plants against root pathogens. The review concludes with discussion of future research priorities regarding the potentially very fruitful concept of MHB.
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Affiliation(s)
- P Frey-Klett
- INRA, UMR1136 INRA-UHP 'Interactions Arbres/Micro-organismes', IFR 110, Centre de Nancy, 54280 Champenoux, France
| | - J Garbaye
- INRA, UMR1136 INRA-UHP 'Interactions Arbres/Micro-organismes', IFR 110, Centre de Nancy, 54280 Champenoux, France
| | - M Tarkka
- UFZ-Department of Soil Ecology, Helmholz Centre for Environmental Research, Theodor-Lieser-Strasse 4, 06120 Halle, Germany
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Vivas A, Barea JM, Azcón R. Interactive effect of Brevibacillus brevis and Glomus mosseae, both isolated from Cd contaminated soil, on plant growth, physiological mycorrhizal fungal characteristics and soil enzymatic activities in Cd polluted soil. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2005; 134:257-266. [PMID: 15589653 DOI: 10.1016/j.envpol.2004.07.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2003] [Accepted: 07/30/2004] [Indexed: 05/24/2023]
Abstract
The interaction between two autochthonous microorganisms (Brevibacillus brevis and Glomus mosseae) isolated from Cd amended soil increased plant growth, arbuscular mycorrhizal (AM) colonization and physiological characteristics of the AM infection (measured as SDH or ALP activities). The enhanced plant Cd tolerance after coinoculation with native microorganisms seemed to be a consequence of increased P and K acquisition and, simultaneously, of decreased concentration of Cd, Cr, Mn, Cu, Mo, Fe and Ni in plant tissue. Autochthonous microbial strains were more efficient for nutrient uptake, to immobilize metals and decrease their translocation to the shoot than reference G. mosseae (with or without bacteria). Indole acetic acid produced by B. brevis may be related to its ability for improving root growth, nodule production and AM fungal intra and extraradical development. Dehydrogenase, phosphatase and beta-glucosidase activities, indicative of microbial metabolism and soil fertility, were maximized by the coinoculation of autochthonous microorganisms in cadmium polluted conditions. As a consequence, the use of native microorganisms may result very efficient in bioremediation.
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Affiliation(s)
- A Vivas
- Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, CSIC; Profesor Albareda 1, 18008 Granada, Spain
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