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Wen Y, Wu R, Xu T, Cao R, Song G, Qi D, Chang W, Li K, Ping Y, Zhang M, Fan X, Song F. AMF and biochar reshape the bacterial network in rhizosphere soil of Ricinus communis under chromium (Cr) stress and improve soil quality. JOURNAL OF HAZARDOUS MATERIALS 2025; 492:138122. [PMID: 40174452 DOI: 10.1016/j.jhazmat.2025.138122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2025] [Revised: 03/07/2025] [Accepted: 03/30/2025] [Indexed: 04/04/2025]
Abstract
Arbuscular mycorrhizal fungi (AMF) and biochar synergistically mitigate Cr toxicity in plants. Ricinus communis roots are proficient in heavy metal accumulation. However, the role of AMF and biochar in reshaping bacterial networks during Cr remediation remains unclear. This study utilized pot experiments to investigate how the "AMF-biochar-Ricinus communis" system influences bacterial networks in rhizosphere soil under Cr stress and enhances soil quality. Results indicated that under 150 mg/kg Cr stress, the AMF-biochar combination significantly increased castor plant fresh weight and soil quality index by 359.70 % and 121.25 %, respectively, compared to treatments without biochar or AMF (P < 0.05). Notably, under Cr stress, the combined treatment significantly increased the relative abundance of Arthrobacter while decreasing that of Streptomyces. Network analysis and community assembly results revealed that AMF and biochar together significantly enhanced soil bacterial network complexity and average niche width. In conclusion, the AMF-biochar combination effectively promoted Ricinus communis growth under Cr stress and regulated rhizosphere soil bacterial community stability and assembly processes, providing valuable insights into plant-microbe interactions under Cr(VI) stress.
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Affiliation(s)
- Yuqiang Wen
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China; Jiaxiang Industrial Technology Research Institute of Heilongjiang University, Jining 272000, China; School of Hydraulic and Electric-Power of Heilongjiang University, Harbin 150080, China
| | - Ruotong Wu
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China; Jiaxiang Industrial Technology Research Institute of Heilongjiang University, Jining 272000, China
| | - Tianle Xu
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China
| | - Ranran Cao
- Jiaxiang Industrial Technology Research Institute of Heilongjiang University, Jining 272000, China
| | - Ge Song
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China
| | - Dandan Qi
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China
| | - Wei Chang
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China; Jiaxiang Industrial Technology Research Institute of Heilongjiang University, Jining 272000, China
| | - Kun Li
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China
| | - Yuan Ping
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China
| | - Mengmeng Zhang
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China
| | - Xiaoxu Fan
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China
| | - Fuqiang Song
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China; Jiaxiang Industrial Technology Research Institute of Heilongjiang University, Jining 272000, China.
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2
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Alemneh AA, Cawthray GR, Zhou Y, Ryder MH, Denton MD. A new isolation methodology for phosphate-solubilizing bacteria using a step-wise enrichment process. J Appl Microbiol 2025; 136:lxaf101. [PMID: 40388265 DOI: 10.1093/jambio/lxaf101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 03/22/2025] [Accepted: 05/16/2025] [Indexed: 05/21/2025]
Abstract
AIMS Phosphate-solubilizing bacteria (PSB) screened for their ability to solubilize Ca3(PO4)2 in a laboratory may not be effective in solubilizing phosphorus (P) in soils that contain different forms of P. We developed an efficient isolation method to obtain PSB from soils collected from diverse soil types that vary in P forms. METHODS AND RESULTS PSB isolated through enrichment in media containing AlO4P, Ca3(PO4)2, or FeO4P as sole P sources were compared with a previous collection of Pseudomonas- and Bacillus-like bacteria that solubilized P. There was a significant positive association (P < .05) between the number of culturable PSB and several properties from the original soils, including calcium, magnesium, potassium, total N, P, carbon concentrations, electrical conductivity, and silt content. The number of culturable PSB was inversely related to the sand content of the soil. Additionally, the most efficient PSB were obtained from sites with a high aridity index and from alkaline soils. After enrichment, there was a significant increase in PSB among all culturable bacteria. Isolates obtained after step-wise enrichment solubilized 1.8-2.2, 1.4-2.9, and 2.2-3.3 times more P from Ca3(PO4)2, AlO4P, and FeO4P, respectively, compared with strains selected using a taxonomic method. Isolates enriched using FeO4P produced predominantly tri- and dicarboxylates in vitro. Additionally, we identified an efficient P solubilizer that is closely related to Pseudomonas granadensis, a species not previously reported as a P solubilizer. CONCLUSION Using a step-wise enrichment method in culture media with sparingly soluble P increased the likelihood of isolating high-efficiency PSB from soil.
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Affiliation(s)
- Anteneh Argaw Alemneh
- School of Agriculture, Food and Wine, The University of Adelaide, Glen Osmond, SA 5064, Australia
- China-Australia Joint Laboratory for Soil Ecological Health and Remediation, The University of Adelaide, Glen Osmond, SA 5064, Australia
| | - Gregory R Cawthray
- School of Biological Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, Perth, WA 6009, Australia
| | - Yi Zhou
- School of Agriculture, Food and Wine, The University of Adelaide, Glen Osmond, SA 5064, Australia
- China-Australia Joint Laboratory for Soil Ecological Health and Remediation, The University of Adelaide, Glen Osmond, SA 5064, Australia
| | - Maarten H Ryder
- School of Agriculture, Food and Wine, The University of Adelaide, Glen Osmond, SA 5064, Australia
- China-Australia Joint Laboratory for Soil Ecological Health and Remediation, The University of Adelaide, Glen Osmond, SA 5064, Australia
| | - Matthew D Denton
- School of Agriculture, Food and Wine, The University of Adelaide, Glen Osmond, SA 5064, Australia
- China-Australia Joint Laboratory for Soil Ecological Health and Remediation, The University of Adelaide, Glen Osmond, SA 5064, Australia
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3
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Solano Porras RC, Ghoreishi G, Sánchez A, Barrena R, Font X, Ballardo C, Artola A. Solid-state fermentation of green waste for the production of biostimulants to enhance lettuce (Lactuca sativa L.) cultivation under water stress: Closing the organic waste cycle. CHEMOSPHERE 2025; 370:143919. [PMID: 39647788 DOI: 10.1016/j.chemosphere.2024.143919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2024] [Revised: 11/18/2024] [Accepted: 12/06/2024] [Indexed: 12/10/2024]
Abstract
Food production faces important challenges such as water scarcity and the overall need of novel sustainable strategies. This study assesses the effect of the biostimulant produced through solid-state fermentation (SSF) of green waste (wood chips and grass residues) inoculated with Trichoderma harzianum with and without l-tryptophan as a precursor for indole-3-acetic acid (IAA) production, a well-known plant hormone. The fermented solid demonstrated significant positive effects on the growth of lettuce (Lactuca sativa L.) under different irrigation conditions. Substantial enhancements were observed in growth parameters such as fresh weight, plant height, leaf area and leaf quantity, along with chemical parameters including total phenol content, chlorophylls, carotenoids, and antioxidant activity (DPPH). The results also showed a positive impact on the nutritional quality of lettuce, particularly under normal irrigation conditions. In conclusion, this study highlights the biostimulant potential to improve the yield and nutritional quality of lettuce crops by reusing plant residues. Additionally, it poses the relevance of applying circular economy principles in sustainable agriculture and organic waste management.
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Affiliation(s)
- Roberto Carlos Solano Porras
- Composting Research Group (GICOM), Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain
| | - Golafarin Ghoreishi
- Composting Research Group (GICOM), Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain
| | - Antoni Sánchez
- Composting Research Group (GICOM), Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain
| | - Raquel Barrena
- Composting Research Group (GICOM), Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain
| | - Xavier Font
- Composting Research Group (GICOM), Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain
| | - Cindy Ballardo
- Solid Waste Research Centre (CIRSO), Universidad Nacional del Centro del Perú, 12006, El Tambo, Huancayo, Peru
| | - Adriana Artola
- Composting Research Group (GICOM), Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain.
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Olanrewaju OS, Glick BR, Babalola OO. Beyond correlation: Understanding the causal link between microbiome and plant health. Heliyon 2024; 10:e40517. [PMID: 39669148 PMCID: PMC11636107 DOI: 10.1016/j.heliyon.2024.e40517] [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: 08/04/2023] [Revised: 11/15/2024] [Accepted: 11/18/2024] [Indexed: 12/14/2024] Open
Abstract
Understanding the causal link between the microbiome and plant health is crucial for the future of crop production. Established studies have shown a symbiotic relationship between microbes and plants, reshaping our knowledge of plant microbiomes' role in health and disease. Addressing confounding factors in microbiome study is essential, as standardization enables precise identification of microbiome features that influence outcomes. The microbiome significantly impacts plant development, necessitating holistic investigation for maintaining plant health. Mechanistic studies have deepened our understanding of microbiome structure and function related to plant health, though much research still needs to be carried out. This review, therefore, discusses current challenges and proposes advancing studies from correlation to causation and translation. We explore current knowledge on the microbiome and plant health, emphasizing multi-omics approaches and hypothesis-driven research. Future studies should focus on developing translational research for producing probiotics and prebiotics from biomarkers that regulate the microbiome-plant health connection, promoting sustainable crop production through microbiome applications.
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Affiliation(s)
- Oluwaseyi Samuel Olanrewaju
- Unit for Environmental Sciences and Management, Microbiology, North-West University, Potchefstroom Campus, Private Bag X6001, Potchefstroom, 2520, South Africa
| | - Bernard R. Glick
- Department of Biology, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada
| | - Olubukola Oluranti Babalola
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, South Africa
- Department of Life Sciences, Silwood Park Campus, Imperial College London, Buckhurst road, Ascot, Berkshire, SL5 7PY, UK
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Guo S, Hu X, Wang Z, Yu F, Hou X, Xing B. Zinc oxide nanoparticles cooperate with the phyllosphere to promote grain yield and nutritional quality of rice under heatwave stress. Proc Natl Acad Sci U S A 2024; 121:e2414822121. [PMID: 39495932 PMCID: PMC11573674 DOI: 10.1073/pnas.2414822121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2024] [Accepted: 09/19/2024] [Indexed: 11/06/2024] Open
Abstract
To address rising global food demand, the development of sustainable technologies to increase productivity is urgently needed. This study revealed that foliar application of zinc oxide nanoparticles (ZnO NPs; 30 to 80 nm, 0.67 mg/d per plant, 6 d) to rice leaves under heatwave (HW) stress increased the grain yield and nutritional quality. Compared with the HW control, the HWs+ZnO group presented increases in the grain yield, grain protein content, and amino acid content of 22.1%, 11.8%, and 77.5%, respectively. Nanoscale ZnO aggregated on the leaf surface and interacted with leaf surface molecules. Compared with that at ambient temperature, HW treatment increased the dissolution of ZnO NPs on the leaf surface by 25.9% and facilitated their translocation to mesophyll cells. The Zn in the leaves existed as both ionic Zn and particulate ZnO. Compared with the HW control, foliar application of ZnO NPs under HW conditions increased leaf nutrient levels (Zn, Mn, Cu, Fe, and Mg) by 15.8 to 416.9%, the chlorophyll content by 22.2 to 24.8%, Rubisco enzyme activity by 21.2%, and antioxidant activity by 26.7 to 31.2%. Transcriptomic analyses revealed that ZnO NPs reversed HW-induced transcriptomic dysregulation, thereby enhancing leaf photosynthesis by 74.4%. Additionally, ZnO NPs increased the diversity, stability, and enrichment of beneficial microbial taxa and protected the phyllosphere microbial community from HW damage. This work elucidates how NPs interact with the phyllosphere, highlighting the potential of NPs to promote sustainable agriculture, especially under extreme climate events (e.g., HWs).
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Affiliation(s)
- Shuqing Guo
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Carbon Neutrality Interdisciplinary Science Centre, College of Environmental Science and Engineering, Nankai University, Tianjin300350, China
| | - Xiangang Hu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Carbon Neutrality Interdisciplinary Science Centre, College of Environmental Science and Engineering, Nankai University, Tianjin300350, China
| | - Zixuan Wang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Carbon Neutrality Interdisciplinary Science Centre, College of Environmental Science and Engineering, Nankai University, Tianjin300350, China
| | - Fubo Yu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Carbon Neutrality Interdisciplinary Science Centre, College of Environmental Science and Engineering, Nankai University, Tianjin300350, China
| | - Xuan Hou
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Carbon Neutrality Interdisciplinary Science Centre, College of Environmental Science and Engineering, Nankai University, Tianjin300350, China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA01003
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Ali MH, Khan MI, Amjad F, Khan N, Seleiman MF. Improved chickpea growth, physiology, nutrient assimilation and rhizoremediation of hydrocarbons by bacterial consortia. BMC PLANT BIOLOGY 2024; 24:984. [PMID: 39425086 PMCID: PMC11490054 DOI: 10.1186/s12870-024-05709-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2024] [Accepted: 10/15/2024] [Indexed: 10/21/2024]
Abstract
BACKGROUND Soil pollution by petroleum hydrocarbons (PHCs) reduces yield by changing the physico-chemical properties of soil and plants due to PHCs' biotoxicity and persistence. Thus, removing PHCs from the soil is crucial for ecological sustainability. Microbes-assisted phytoremediation is an economical and eco-friendly solution. The current work aimed to develop and use bacterial consortia (BC) for PHCs degradation and plant growth enhancement in hydrocarbon-contaminated soil. Initially, the enriched microbial cultures (that were prepared from PHCs-contaminated soils from five distinct regions) were obtained via screening through microcosm experiments. Afterward, two best microbial cultures were tested for PHCs degradation under various temperature and pH ranges. After culture optimization, isolation and characterization of bacterial strains were done to construct two BC. These constructed BC were tested in a pot experiment for hydrocarbons degradation and chickpea growth in PHCs contaminated soil. RESULTS Findings revealed that PHCs exerted significant phytotoxic effects on chickpea growth and physiology when cultivated in PHCs contaminated soil, reducing agronomic and physiological traits by 13-29% and 12-43%, respectively. However, in the presence of BC, the phytotoxic impacts of PHCs on chickpea plants were reduced, resulting in up to 24 - 35% improvement in agronomic and physiological characteristics as compared to un-inoculated contaminated controls. Furthermore, the bacterial consortia boosted chickpea's nutritional absorption and antioxidant mechanism. Most importantly, chickpea plants phytoremediated 52% of the initial PHCs concentration; however, adding BC1 and BC2 with chickpea plants further increased this removal and remediated 74% and 80% of the initial PHCs concentration, respectively. CONCLUSION In general, BC2 outperformed BC1 (with few exceptions) in promoting plant growth and PHCs elimination. Therefore, using multi-trait BC for PHCs degradation and plant growth improvement under PHCs stress may be an efficient and environmentally friendly strategy to deal with PHCs pollution and toxicity.
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Affiliation(s)
- Muhammad Hayder Ali
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38000, Pakistan
| | - Muhammad Imran Khan
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38000, Pakistan.
| | - Fiza Amjad
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38000, Pakistan
| | - Naeem Khan
- Agronomy Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, 32611, USA
| | - Mahmoud F Seleiman
- Plant Production Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia
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Mukherjee A, Singh BN, Kaur S, Sharma M, Ferreira de Araújo AS, Pereira APDA, Morya R, Puopolo G, Melo VMM, Verma JP. Unearthing the power of microbes as plant microbiome for sustainable agriculture. Microbiol Res 2024; 286:127780. [PMID: 38970905 DOI: 10.1016/j.micres.2024.127780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Revised: 05/20/2024] [Accepted: 05/21/2024] [Indexed: 07/08/2024]
Abstract
In recent years, research into the complex interactions and crosstalk between plants and their associated microbiota, collectively known as the plant microbiome has revealed the pivotal role of microbial communities for promoting plant growth and health. Plants have evolved intricate relationships with a diverse array of microorganisms inhabiting their roots, leaves, and other plant tissues. This microbiota mainly includes bacteria, archaea, fungi, protozoans, and viruses, forming a dynamic and interconnected network within and around the plant. Through mutualistic or cooperative interactions, these microbes contribute to various aspects of plant health and development. The direct mechanisms of the plant microbiome include the enhancement of plant growth and development through nutrient acquisition. Microbes have the ability to solubilize essential minerals, fix atmospheric nitrogen, and convert organic matter into accessible forms, thereby augmenting the nutrient pool available to the plant. Additionally, the microbiome helps plants to withstand biotic and abiotic stresses, such as pathogen attacks and adverse environmental conditions, by priming the plant's immune responses, antagonizing phytopathogens, and improving stress tolerance. Furthermore, the plant microbiome plays a vital role in phytohormone regulation, facilitating hormonal balance within the plant. This regulation influences various growth processes, including root development, flowering, and fruiting. Microbial communities can also produce secondary metabolites, which directly or indirectly promote plant growth, development, and health. Understanding the functional potential of the plant microbiome has led to innovative agricultural practices, such as microbiome-based biofertilizers and biopesticides, which harness the power of beneficial microorganisms to enhance crop yields while reducing the dependency on chemical inputs. In the present review, we discuss and highlight research gaps regarding the plant microbiome and how the plant microbiome can be used as a source of single and synthetic bioinoculants for plant growth and health.
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Affiliation(s)
- Arpan Mukherjee
- Plant-Microbe Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Bansh Narayan Singh
- Plant-Microbe Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Simranjit Kaur
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW 2753, Australia; Crop Research Centre, Oak Park, Carlow, Ireland
| | - Minaxi Sharma
- CARAH ASBL, Rue Pal Pastur 11, Ath 7800, Belgium; China Beacons of Excellence Research and Innovation Institute (CBI), University of Nottingham Ningbo China, Ningbo 315000, China
| | | | | | - Raj Morya
- Department of Civil and Environmental engineering, Yonsei University, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Gerardo Puopolo
- Center Agriculture Food Environment (C3A), University of Trento, Via Mach 1, San Michele all'Adige 38098, Italy; Research and Innovation center, Fondazione Edmund Mach, Via E. Mach 1, San Michelle all'Adige 38098, Italy
| | - Vânia Maria Maciel Melo
- Department of Biological Sciences, Faculty of Science, Federal University of Ceará, Pici, Fortaleza, Ceará 60020-181, Brazil
| | - Jay Prakash Verma
- Plant-Microbe Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India.
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Goyal T, Mukherjee A, Chouhan GK, Gaurav AK, Kumar D, Abeysinghe S, Verma JP. Impact of bacterial volatiles on the plant growth attributes and defense mechanism of rice seedling. Heliyon 2024; 10:e29692. [PMID: 38660266 PMCID: PMC11040113 DOI: 10.1016/j.heliyon.2024.e29692] [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: 12/18/2023] [Revised: 04/10/2024] [Accepted: 04/12/2024] [Indexed: 04/26/2024] Open
Abstract
Rice is a major dietary element for about two billion people worldwide and it faces numerous biotic and abiotic stress for its cultivation. Rice blast disease caused by Magnaporthe oryzae reduce up to 30 % rice yield. Overuse of synthetic chemicals raises concerns about health and environment; so, there is an urgent need to explore innovative sustainable strategies for crop productivity. The main aim of this study is to explore the impact of bacterial volatiles (BVCs) on seedling growth and defense mechanisms of rice under in-vitro condition. On the basis of plant growth promoting properties, six bacterial strains were selected out of ninety-one isolated strains for this study; Pantoea dispersa BHUJPVR01, Enterobacter cloacae BHUJPVR02, Enterobacter sp. BHUJPVR12, Priestia aryabhattai BHUJPVR13, Pseudomonas sp. BHUJPVWRO5 and Staphylococcus sp. BHUJPVWLE7. Through the emission of bacterial volatiles compounds (BVCs), Enterobacter sp., P. dispersa and P. aryabhattai significantly reduces the growth of rice blast fungus Magnaporthe oryzae by 69.20 %, 66.15 % and 62.31 % respectively. Treatment of rice seedlings with BVCs exhibited significant enhancement in defence enzyme levels, including guaiacol peroxidase, polyphenol oxidase, total polyphenols, and total flavonoids by a maximum of up to 24 %, 48 %, 116 % and 80 %, respectively. Furthermore, BVCs effectively promote shoot height, root height, and root counts of rice. All BVCs treated plant showed a significant increase in shoot height. P. dispersa treated plants showed the highest increase of 60 % shoot and 110 % root length, respectively. Root counts increased up to 30% in plants treated with E. cloacae and Staphylococcus sp. The BVCs can be used as a sustainable approach for enhancing plant growth attributes, productivity and defence mechanism of rice plant under biotic and abiotic stresses.
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Affiliation(s)
- Tushar Goyal
- Plant Microbe Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - Arpan Mukherjee
- Plant Microbe Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - Gowardhan Kumar Chouhan
- Plant Microbe Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - Anand Kumar Gaurav
- Plant Microbe Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - Deepak Kumar
- Plant Microbe Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - Saman Abeysinghe
- Department of Botany, Faculty of Science, University of Ruhuna, Matara, Sri Lanka
| | - Jay Prakash Verma
- Plant Microbe Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
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Mukherjee A, Gaurav AK, Chouhan GK, Singh S, Sarkar A, Abeysinghe S, Verma JP. Chickpea seed endophyte Enterobacter sp. mediated yield and nutritional enrichment of chickpea for improving human and livestock health. Front Nutr 2024; 11:1387130. [PMID: 38725576 PMCID: PMC11079264 DOI: 10.3389/fnut.2024.1387130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 04/08/2024] [Indexed: 05/12/2024] Open
Abstract
Chickpeas (Cicer arietinum L.) are used as a good source of proteins and energy in the diets of various organisms including humans and animals. Chickpea straws can serve as an alternative option for forage for different ruminants. This research mainly focussed on screening the effects of adding beneficial chickpea seed endophytes on increasing the nutritional properties of the different edible parts of chickpea plants. Two efficient chickpea seed endophytes (Enterobacter sp. strain BHUJPCS-2 and BHUJPCS-8) were selected and applied to the chickpea seeds before sowing in the experiment conducted on clay pots. Chickpea seeds treated with both endophytes showed improved plant growth and biomass accumulation. Notably, improvements in the uptake of mineral nutrients were found in the foliage, pericarp, and seed of the chickpea plants. Additionally, nutritional properties such as total phenolics (0.47, 0.25, and 0.55 folds), total protein (0.04, 0.21, and 0.18 folds), carbohydrate content (0.31, 0.32, and 0.31 folds), and total flavonoid content (0.45, 027, and 0.8 folds) were increased in different parts (foliage, pericarp, and seed) of the chickpea plants compared to the control plants. The seed endophyte-treated plants showed a significant increase in mineral accumulation and improvement in nutrition in the different edible parts of chickpea plants. The results showed that the seed endophyte-mediated increase in dietary and nutrient value of the different parts (pericarp, foliage, and seeds) of chickpea are consumed by humans, whereas the other parts (pericarp and foliage) are used as alternative options for forage and chaff in livestock diets and may have direct effects on their nutritional conditions.
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Affiliation(s)
- Arpan Mukherjee
- Plant Microbes Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Anand Kumar Gaurav
- Plant Microbes Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Gowardhan Kumar Chouhan
- Plant Microbes Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Saurabh Singh
- Plant Microbes Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Ankita Sarkar
- Department of Mycology and Plant Pathology, Institute of Agricultural Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Saman Abeysinghe
- Department of Botany, Faculty of Science, University of Ruhuna, Matara, Sri Lanka
| | - Jay Prakash Verma
- Plant Microbes Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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10
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Nivetha N, Shukla PS, Nori SS, Kumar S, Suryanarayan S. A red seaweed Kappaphycus alvarezii-based biostimulant (AgroGain ®) improves the growth of Zea mays and impacts agricultural sustainability by beneficially priming rhizosphere soil microbial community. Front Microbiol 2024; 15:1330237. [PMID: 38646629 PMCID: PMC11027899 DOI: 10.3389/fmicb.2024.1330237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 03/08/2024] [Indexed: 04/23/2024] Open
Abstract
The overuse of chemical-based agricultural inputs has led to the degradation of soil with associated adverse effects on soil attributes and microbial population. This scenario leads to poor soil health and is reportedly on the rise globally. Additionally, chemical fertilizers pose serious risks to the ecosystem and human health. In this study, foliar sprays of biostimulant (AgroGain/LBS6) prepared from the cultivated, tropical red seaweed Kappaphycus alvarezii increased the phenotypic growth of Zea mays in terms of greater leaf area, total plant height, and shoot fresh and dry weights. In addition, LBS6 improved the accumulation of chlorophyll a and b, total carotenoids, total soluble sugars, amino acids, flavonoids, and phenolics in the treated plants. LBS6 applications also improved the total bacterial and fungal count in rhizospheric soil. The V3-V4 region of 16S rRNA gene from the soil metagenome was analyzed to study the abundance of bacterial communities which were increased in the rhizosphere of LBS6-treated plants. Treatments were found to enrich beneficial soil bacteria, i.e., Proteobacteria, especially the classes Alphaproteobacteria, Cyanobacteria, Firmicutes, Actinobacteriota, Verrucomicrobiota, Chloroflexi, and Acidobacteriota and several other phyla related to plant growth promotion. A metagenomic study of those soil samples from LBS6-sprayed plants was correlated with functional potential of soil microbiota. Enrichment of metabolisms such as nitrogen, sulfur, phosphorous, plant defense, amino acid, co-factors, and vitamins was observed in soils grown with LBS6-sprayed plants. These results were further confirmed by a significant increase in the activity of soil enzymes such as urease, acid phosphatase, FDAse, dehydrogenase, catalase, and biological index of fertility in the rhizosphere of LBS6-treated corn plant. These findings conclude that the foliar application of LBS6 on Z. mays improves and recruits beneficial microbes and alters soil ecology in a sustainable manner.
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Affiliation(s)
| | - Pushp Sheel Shukla
- Research and Development Division, Sea6 Energy Private Limited, Centre for Cellular and Molecular Platforms, NCBS-TIFR Campus, Bengaluru, India
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11
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Feigl V, Medgyes-Horváth A, Kari A, Török Á, Bombolya N, Berkl Z, Farkas É, Fekete-Kertész I. The potential of Hungarian bauxite residue isolates for biotechnological applications. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2024; 41:e00825. [PMID: 38225962 PMCID: PMC10788403 DOI: 10.1016/j.btre.2023.e00825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/14/2023] [Accepted: 12/19/2023] [Indexed: 01/17/2024]
Abstract
Bauxite residue (red mud) is considered an extremely alkaline and salty environment for the biota. We present the first attempt to isolate, identify and characterise microbes from Hungarian bauxite residues. Four identified bacterial strains belonged to the Bacilli class, one each to the Actinomycetia, Gammaproteobacteria, and Betaproteobacteria classes, and two to the Alphaproteobacteria class. All three identified fungi strains belonged to the Ascomycota division. Most strains tolerated pH 8-10 and salt content at 5-7% NaCl concentration. Alkalihalobacillus pseudofirmus BRHUB7 and Robertmurraya beringensis BRHUB9 can be considered halophilic and alkalitolerant. Priestia aryabhattai BRHUB2, Penicillium chrysogenum BRHUF1 and Aspergillus sp. BRHUF2 are halo- and alkalitolerant strains. Most strains produced siderophores and extracellular polymeric substances, could mobilise phosphorous, and were cellulose degraders. These strains and their enzymes are possible candidates for biotechnological applications in processes requiring extreme conditions, e.g. bioleaching of critical raw materials and rehabilitation of alkaline waste deposits.
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Affiliation(s)
- Viktória Feigl
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem Rkp 3., Budapest 1111, Hungary
| | - Anna Medgyes-Horváth
- ELTE Eötvös Loránd University, Department of Physics of Complex Systems, Pázmány P. s. 1A, Budapest 1117, Hungary
| | - András Kari
- ELTE Eötvös Loránd University, Department of Microbiology, Pázmány P. s. 1A, Budapest 1117, Hungary
| | - Ádám Török
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem Rkp 3., Budapest 1111, Hungary
| | - Nelli Bombolya
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem Rkp 3., Budapest 1111, Hungary
| | - Zsófia Berkl
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem Rkp 3., Budapest 1111, Hungary
| | - Éva Farkas
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem Rkp 3., Budapest 1111, Hungary
- Norwegian Institute of Bioeconomy Research (NIBIO), Division of Environment and Natural Resources, Department of Biogeochemistry and Soil Quality, Høgskoleveien 7, 1432 Ås, Norway
| | - Ildikó Fekete-Kertész
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Applied Biotechnology and Food Science, Műegyetem Rkp 3., Budapest 1111, Hungary
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12
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Sun Z, Adeleke BS, Shi Y, Li C. The seed microbiomes of staple food crops. Microb Biotechnol 2023; 16:2236-2249. [PMID: 37815330 PMCID: PMC10686132 DOI: 10.1111/1751-7915.14352] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 09/19/2023] [Accepted: 09/22/2023] [Indexed: 10/11/2023] Open
Abstract
The scientific community increasingly recognized that seed microbiomes are important for plant growth and nutrition. The versatile roles and modulating properties that microbiomes hold in the context of seeds seem to be an inherited approach to avert adverse conditions. These discoveries attracted extensive interest, especially in staple food crops (SFCs) where grain was consumed as food. Along with the rapid expansion of population and industrialization that posed a severe challenge to the yield of SFCs, microbiologists and botanists began to explore and engineer seed microbiomes, for safer and more fruitful grain production. To utilize seed microbiomes, we present an overall review of the most updated scientific literature on three representative SFCs (wheat, rice and maize) using the 5W1H (Which, Where, What, Why, When and How) method that provides a comprehensive understanding of the issue. These include which factors determine the composition of seed microbiomes? Where do seed microbiomes come from? What are these seed microbes? Why do these microbes choose seeds as their destination and when do microbes settle down and become seed communists? In addition, how do seed microbiomes work and can be manipulated effectively? Therefore, answering the aforementioned questions regarding SFCs seed microbiomes remain fundamental in bridging endophytic research gaps and harnessing their ecological services.
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Affiliation(s)
- Zhongke Sun
- School of Biological EngineeringHenan University of TechnologyZhengzhouChina
- Food Laboratory of ZhongyuanLuoheChina
| | - Bartholomew Saanu Adeleke
- School of Biological EngineeringHenan University of TechnologyZhengzhouChina
- Department of Biological Sciences, School of ScienceOlusegun Agagu University of Science and TechnologyOkitipupaNigeria
| | - Yini Shi
- School of Biological EngineeringHenan University of TechnologyZhengzhouChina
| | - Chengwei Li
- School of Biological EngineeringHenan University of TechnologyZhengzhouChina
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Fuller E, Germaine KJ, Rathore DS. The Good, the Bad, and the Useable Microbes within the Common Alder ( Alnus glutinosa) Microbiome-Potential Bio-Agents to Combat Alder Dieback. Microorganisms 2023; 11:2187. [PMID: 37764031 PMCID: PMC10535473 DOI: 10.3390/microorganisms11092187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/24/2023] [Accepted: 08/25/2023] [Indexed: 09/29/2023] Open
Abstract
Common Alder (Alnus glutinosa (L.) Gaertn.) is a tree species native to Ireland and Europe with high economic and ecological importance. The presence of Alder has many benefits including the ability to adapt to multiple climate types, as well as aiding in ecosystem restoration due to its colonization capabilities within disturbed soils. However, Alder is susceptible to infection of the root rot pathogen Phytophthora alni, amongst other pathogens associated with this tree species. P. alni has become an issue within the forestry sector as it continues to spread across Europe, infecting Alder plantations, thus affecting their growth and survival and altering ecosystem dynamics. Beneficial microbiota and biocontrol agents play a crucial role in maintaining the health and resilience of plants. Studies have shown that beneficial microbes promote plant growth as well as aid in the protection against pathogens and abiotic stress. Understanding the interactions between A. glutinosa and its microbiota, both beneficial and pathogenic, is essential for developing integrated management strategies to mitigate the impact of P. alni and maintain the health of Alder trees. This review is focused on collating the relevant literature associated with Alder, current threats to the species, what is known about its microbial composition, and Common Alder-microbe interactions that have been observed worldwide to date. It also summarizes the beneficial fungi, bacteria, and biocontrol agents, underpinning genetic mechanisms and secondary metabolites identified within the forestry sector in relation to the Alder tree species. In addition, biocontrol mechanisms and microbiome-assisted breeding as well as gaps within research that require further attention are discussed.
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Affiliation(s)
- Emma Fuller
- EnviroCore, Dargan Research Centre, Department of Applied Science, South East Technological University, Kilkenny Road, R93 V960 Carlow, Ireland; (E.F.); (K.J.G.)
- Teagasc, Forestry Development Department, Oak Park Research Centre, R93 XE12 Carlow, Ireland
| | - Kieran J. Germaine
- EnviroCore, Dargan Research Centre, Department of Applied Science, South East Technological University, Kilkenny Road, R93 V960 Carlow, Ireland; (E.F.); (K.J.G.)
| | - Dheeraj Singh Rathore
- Teagasc, Forestry Development Department, Oak Park Research Centre, R93 XE12 Carlow, Ireland
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Sun W, Shahrajabian MH. The Application of Arbuscular Mycorrhizal Fungi as Microbial Biostimulant, Sustainable Approaches in Modern Agriculture. PLANTS (BASEL, SWITZERLAND) 2023; 12:3101. [PMID: 37687348 PMCID: PMC10490045 DOI: 10.3390/plants12173101] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/16/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023]
Abstract
Biostimulant application can be considered an effective, practical, and sustainable nutritional crop supplementation and may lessen the environmental problems related to excessive fertilization. Biostimulants provide beneficial properties to plants by increasing plant metabolism, which promotes crop yield and improves the quality of crops; protecting plants against environmental stresses such as water shortage, soil salinization, and exposure to sub-optimal growth temperatures; and promoting plant growth via higher nutrient uptake. Other important benefits include promoting soil enzymatic and microbial activities, changing the architecture of roots, increasing the solubility and mobility of micronutrients, and enhancing the fertility of the soil, predominantly by nurturing the development of complementary soil microbes. Biostimulants are classified as microbial, such as arbuscular mycorrhizae fungi (AMF), plant-growth-promoting rhizobacteria (PGPR), non-pathogenic fungi, protozoa, and nematodes, or non-microbial, such as seaweed extract, phosphite, humic acid, other inorganic salts, chitin and chitosan derivatives, protein hydrolysates and free amino acids, and complex organic materials. Arbuscular mycorrhizal fungi are among the most prominent microbial biostimulants and have an important role in cultivating better, healthier, and more functional foods in sustainable agriculture. AMF assist plant nutrient and water acquisition; enhance plant stress tolerance against salinity, drought, and heavy metals; and reduce soil erosion. AMF are proven to be a sustainable and environmentally friendly source of crop supplements. The current manuscript gives many examples of the potential of biostimulants for the production of different crops. However, further studies are needed to better understand the effectiveness of different biostimulants in sustainable agriculture. The review focuses on how AMF application can overcome nutrient limitations typical of organic systems by improving nutrient availability, uptake, and assimilation, consequently reducing the gap between organic and conventional yields. The aim of this literature review is to survey the impacts of AMF by presenting case studies and successful paradigms in different crops as well as introducing the main mechanisms of action of the different biostimulant products.
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Affiliation(s)
- Wenli Sun
- Correspondence: ; Tel.: +86-13-4260-83836
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15
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Jaiswal DK, Verma JP, Belwal T, Pereira APDA, Ade AB. Editorial: Microbial co-cultures: a new era of synthetic biology and metabolic engineering. Front Microbiol 2023; 14:1235565. [PMID: 37426012 PMCID: PMC10328387 DOI: 10.3389/fmicb.2023.1235565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 06/12/2023] [Indexed: 07/11/2023] Open
Affiliation(s)
| | - Jay Prakash Verma
- Plant-Microbe Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Tarun Belwal
- Texas A&M University, College Station, TX, United States
| | | | - Avinash Bapurao Ade
- Department of Botany, Savitribai Phule Pune University, Pune, Maharashtra, India
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16
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Verma JP, Jaiswal DK, Gaurav AK, Mukherjee A, Krishna R, Prudêncio de Araujo Pereira A. Harnessing bacterial strain from rhizosphere to develop indigenous PGPR consortium for enhancing lobia ( Vigna unguiculata) production. Heliyon 2023; 9:e13804. [PMID: 36895350 PMCID: PMC9988462 DOI: 10.1016/j.heliyon.2023.e13804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 02/01/2023] [Accepted: 02/13/2023] [Indexed: 02/19/2023] Open
Abstract
The rhizosphere microbes play a key role in plant nutrition and health. However, the interaction of beneficial microbes and Vigna unguiculata (lobia) production remains poorly understood. Thus, we aimed to isolate and characterize the soil microbes from the rhizosphere and develop novel microbial consortia for enhancing lobia production. Fifty bacterial strains were isolated from the rhizosphere soil samples of lobia. Finally, five effective strains (e.g., Pseudomonas sp. IESDJP-V1 and Pseudomonas sp. IESDJP-V2, Serratia marcescens IESDJP-V3, Bacillus cereus IESDJP-V4, Ochrobactrum sp. IESDJP-V5) were identified and molecularly characterized by 16 S rDNA gene amplification. All selected strains showed positive plant growth promoting (PGP) properties in broth culture. Based on morphological, biochemical, and plant growth promoting activities, five effective isolated strains and two collected strains (Azospirillum brasilense MTCC-4037 and Paenibacillus polymyxa BHUPSB17) were selected. The pot trials were conducted with seed inoculations of lobia (Vigna unguiculata) var. Kashi Kanchan with thirty treatments and three replications. The treatment combination T3 (Pseudomonas sp. IESDJP-V2), T14 (Pseudomonas sp. IESDJP-V2 + A. brasilense), T26 (Pseudomonas sp. IESDJP-V1+ B. cereus IESDJP-V4 + P. polymyxa) and T27 (IESDJP-V1+ IESDJP-V5+ A. brasilense) were recorded for enhancing plant growth attributes, yield, nutritional content like protein, total sugar, flavonoid and soil properties as compared to control and others. The effective treatments T3 (Pseudomonas sp.), T14 (Pseudomonas sp. IESDJP-V2 + A. brasilense), T26 (Pseudomonas sp. IESDJP-V1+ B. cereus IESDJP-V4 + P. polymyxa) and T27 (IESDJP-V1+ IESDJP-V5+ A. brasilense) recorded as potential PGPR consortium for lobia production. The treatment of single (Pseudomonas sp.), duel (IESDJP-V2 + A. brasilense) and triple combination (IESDJP-V1+ IESDJP-V4 + P. polymyxa) and (IESDJP-V1+ IESDJP-V5+ A. brasilense) can be further used for developing effective indigenous consortium for lobia production under sustainable farming practices. These PGPR bio-inoculant will be cost-effective, environment-friendly and socially acceptable.
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Affiliation(s)
- Jay Prakash Verma
- Plant Microbes Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu, University, Varanasi, 221055, Uttar Pradesh, India
- Soil Microbiology Laboratory, Soil Science Department, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Durgesh Kumar Jaiswal
- Plant Microbes Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu, University, Varanasi, 221055, Uttar Pradesh, India
| | - Anand Kumar Gaurav
- Plant Microbes Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu, University, Varanasi, 221055, Uttar Pradesh, India
| | - Arpan Mukherjee
- Plant Microbes Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu, University, Varanasi, 221055, Uttar Pradesh, India
| | - Ram Krishna
- Plant Microbes Interaction Lab, Institute of Environment and Sustainable Development, Banaras Hindu, University, Varanasi, 221055, Uttar Pradesh, India
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El-Zawawy NA, Ali SS, Nouh HS. Exploring the potential of Rhizopus oryzae AUMC14899 as a novel endophytic fungus for the production of L-tyrosine and its biomedical applications. Microb Cell Fact 2023; 22:31. [PMID: 36804031 PMCID: PMC9942418 DOI: 10.1186/s12934-023-02041-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 02/12/2023] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND A significant threat to the public's health is the rise in antimicrobial resistance among numerous nosocomial bacterial infections. This may be a detriment to present initiatives to enhance the health of immune-compromised patients. Consequently, attention has been devoted to exploring new bioactive compounds in the field of drug discovery from endophytes. Therefore, this study is the first on the production of L-tyrosine (LT) as a promising bio-therapeutic agent from endophytic fungi. RESULTS A new endophytic fungal isolate has been identified for the first time as Rhizopus oryzae AUMC14899 from Opuntia ficus-indica (L.) and submitted to GenBank under the accession number MZ025968. Separation of amino acids in the crude extract of this fungal isolate was carried out, giving a higher content of LT, which is then characterized and purified. LT exhibited strong antibacterial and anti-biofilm activities against multidrug-resistant Gram-negative and Gram-positive bacteria. The recorded minimum inhibitory concentration (MIC) values ranged from 6 to 20 µg/ml. In addition, LT caused a strong reduction in biofilm formation and disrupted the preformed biofilm. Moreover, results indicated that LT supported cell viability, evidencing hemocompatibility and no cytotoxicity. CONCLUSION Our findings suggest that LT has potential as a therapeutic agent due to its potential antibacterial, anti-biofilm, hemocompatibility, and lack of cytotoxic activities, which may also increase the range of therapy options for skin burn infections, leading to the development of a novel fungal-based drug.
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Affiliation(s)
- Nessma A. El-Zawawy
- grid.412258.80000 0000 9477 7793Botany Department, Faculty of Science, Tanta University, Tanta, 31527 Egypt
| | - Sameh Samir Ali
- Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt.
| | - Hoda S. Nouh
- grid.412258.80000 0000 9477 7793Botany Department, Faculty of Science, Tanta University, Tanta, 31527 Egypt
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Wang LS, Zhang Y, Zhang MQ, Gong DC, Mei YZ, Dai CC. Engineered Phomopsis liquidambaris with Fhb1 and Fhb7 Enhances Resistance to Fusarium graminearum in Wheat. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:1391-1404. [PMID: 36625777 DOI: 10.1021/acs.jafc.2c06742] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Fusarium head blight is one of the most serious diseases caused by Fusarium graminearum in wheat. Here, we developed a new way to prevent and control Fusarium head blight by introducing the resistance genes Fhb1 and Fhb7 into the endophytic fungus Phomopsis liquidambaris, named PL-Fhb1 and PL-Fhb7, respectively, which could colonize wheat. The wheat seedlings were preinoculated with PL-Fhb1 and PL-Fhb7 to enhance the resistance against deoxynivalenol (DON) and PL-Fhb1 and PL-Fhb7 inhibited the growth of F. graminearum by 73% and 49%, respectively. The incidence rate of diseased spikes decreased to 35.2% and 45.4%, and the corresponding DON levels for wheat grains decreased from 13.2 to 1.79 μg/g and from 13.2 μg/g to 0.39 μg/g when the leaves were preinoculated with PL-Fhb1 and PL-Fhb7 after overwintering, respectively. The incidence rates of diseased spikes decreased to 25.7% and 34.7%, and the DON levels for wheat grains decreased from 17.48 μg/g to 1.23 μg/g and from 17.48 μg/g to 0 μg/g when the wheat flowers were inoculated with PL-Fhb1 and PL-Fhb7, and the wheat flowers were subsequently infected with F. graminearum, respectively. It was confirmed that DON was transformed into DON-glutathione (GSH) by PL-Fhb7 using high-performance liquid chromatography-mass spectrometry (HPLC-MS). However, PL-Fhb1 may have increased plant immunity and enhanced the resistance to F. graminearum. This study indicates that engineered endophytes can improve the resistance to Fusarium head blight and presents a new method for the biological control of Fusarium head blight.
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Affiliation(s)
- Long-Shen Wang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China
| | - Ya Zhang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China
| | - Meng-Qian Zhang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China
| | - Da-Chun Gong
- China Key Laboratory of Light Industry Functional Yeast, Three Gorges University, Yichang 443000, Hubei, China
| | - Yan-Zhen Mei
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China
| | - Chuan-Chao Dai
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China
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19
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Zhang J, Lu J, Zhu Y, Huang Q, Qin L, Zhu B. Rhizosphere microorganisms of Crocus sativus as antagonists against pathogenic Fusarium oxysporum. FRONTIERS IN PLANT SCIENCE 2022; 13:1045147. [PMID: 36483959 PMCID: PMC9722746 DOI: 10.3389/fpls.2022.1045147] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 11/07/2022] [Indexed: 06/17/2023]
Abstract
Introduction Several microorganisms in the plant root system, especially in the rhizosphere, have their own compositions and functions. Corm rot is the most severe disease of Crocus sativus, leading to more than 50% mortality in field production. Methods In this study, metagenomic sequencing was used to analyze microbial composition and function in the rhizosphere of C. sativus for possible microbial antagonists against pathogenic Fusarium oxysporum. Results The microbial diversity and composition were different in the C. sativus rhizosphere from different habitats. The diversity index (Simpson index) was significantly lower in the C. sativus rhizospheric soil from Chongming (Rs_CM) and degenerative C. sativus rhizospheric soil from Chongming (RsD_CM) than in others. Linear discriminant analysis effect size results showed that differences among habitats were mainly at the order (Burkholderiales, Micrococcales, and Hypocreales) and genus (Oidiodendron and Marssonina) levels. Correlation analysis of the relative lesion area of corm rot showed that Asanoa was the most negatively correlated bacterial genus (ρ = -0.7934, p< 0.001), whereas Moniliophthora was the most negatively correlated fungal genus (ρ = -0.7047, p< 0.001). The relative lesion area result showed that C. sativus from Qiaocheng had the highest resistance, followed by Xiuzhou and Jiande. C. sativus groups with high disease resistance had abundant pathogen resistance genes, such as chitinase and β-1,3-glucanase genes, from rhizosphere microorganisms. Further, 13 bacteria and 19 fungi were isolated from C. sativus rhizosphere soils, and antagonistic activity against pathogenic F. oxysporum was observed on potato dextrose agar medium. In vivo corm experiments confirmed that Trichoderma yunnanense SR38, Talaromyces sp. SR55, Burkholderia gladioli SR379, and Enterobacter sp. SR343 displayed biocontrol activity against corm rot disease, with biocontrol efficiency of 20.26%, 31.37%, 39.22%, and 14.38%, respectively. Discussion This study uncovers the differences in the microbial community of rhizosphere soil of C. sativus with different corm rot disease resistance and reveals the role of four rhizospheric microorganisms in providing the host C. sativus with resistance against corm rot. The obtained biocontrol microorganisms can also be used for application research and field management.
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Affiliation(s)
| | | | | | | | - Luping Qin
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Bo Zhu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
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20
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Seleem M, Khalafallah N, Zuhair R, Ghoneim AM, El-Sharkawy M, Mahmoud E. Effect of integration of poultry manure and vinasse on the abundance and diversity of soil fauna, soil fertility index, and barley (Hordeum aestivum L.) growth in calcareous soils. BMC PLANT BIOLOGY 2022; 22:492. [PMID: 36258172 PMCID: PMC9580110 DOI: 10.1186/s12870-022-03881-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND In Egypt, calcareous soils represent a large part of desert soils suffering from a shortage of nutrients and organic matter, affecting production and biological diversity in agroecosystems. Organic wastes, negatively affect the environment, recycling it as a promising technology in different farming systems, and its impact on crop productivity and soil fauna is largely unknown. In this study, the effects of integrating poultry manure (PM) alone or combined with vinasse (V) at rates of 4.2 g kg- 1 and 6.3 g kg- 1 in pots, on improving soil fauna diversity, soil fertility, soil consistency and yield of barley (Hordeum aestivum L.) grown in a calcareous soil were investigated. RESULTS The results showed that the addition of PM alone or combined with V at different rates led to a significant increase in the microbial biomass carbon (MBC), organic matter (OM), NPK soil availability and yield of barley. The addition of 6.3 g PM and 4.2 g V kg- 1 soil have the best results in OM with 65.0% compared to control, and V contributes more than 16% of them. Prostigmata and Collembola were the dominant groups and accounted for 43.3% and 50.0% in the PM1 and 50.0% and 20.0% in the PM2 of the total individuals, respectively. Shannon and Evenness indices increased significantly with the soil amended by PM alone or combined with V. Soil fauna plays a key role in soil consistency because of a significant relationship between soil fauna and soil OM, MBC and soil fertility index. The addition of 6.3 g PM and 4.2 g V kg- 1 soil gave the best results in grain yield by 76.90% compared to the control. CONCLUSION In conclusion, the interaction between PM and V can be used as a promising organic amendments to increase barley yield and improve efficiency of a recycled PM and V on soil fauna and soil fertility of calcareous soil.
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Affiliation(s)
- Mostafa Seleem
- Department of Soil and Water Science, Faculty of Agriculture, Tanta University, Tanta, Egypt
| | - Naglaa Khalafallah
- Department of Soil and Water Science, Faculty of Agriculture, Tanta University, Tanta, Egypt
| | - Raghda Zuhair
- Department of Zoology, Faculty of Science, Tanta University, Tanta, Egypt
| | - Adel M Ghoneim
- Agricultural Research Center, Field Crops Research Institute, 12112, Giza, Egypt
| | - Mahmoud El-Sharkawy
- Department of Soil and Water Science, Faculty of Agriculture, Tanta University, Tanta, Egypt
| | - Esawy Mahmoud
- Department of Soil and Water Science, Faculty of Agriculture, Tanta University, Tanta, Egypt.
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Afridi MS, Javed MA, Ali S, De Medeiros FHV, Ali B, Salam A, Sumaira, Marc RA, Alkhalifah DHM, Selim S, Santoyo G. New opportunities in plant microbiome engineering for increasing agricultural sustainability under stressful conditions. FRONTIERS IN PLANT SCIENCE 2022; 13:899464. [PMID: 36186071 PMCID: PMC9524194 DOI: 10.3389/fpls.2022.899464] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 08/08/2022] [Indexed: 07/30/2023]
Abstract
Plant microbiome (or phytomicrobiome) engineering (PME) is an anticipated untapped alternative strategy that could be exploited for plant growth, health and productivity under different environmental conditions. It has been proven that the phytomicrobiome has crucial contributions to plant health, pathogen control and tolerance under drastic environmental (a)biotic constraints. Consistent with plant health and safety, in this article we address the fundamental role of plant microbiome and its insights in plant health and productivity. We also explore the potential of plant microbiome under environmental restrictions and the proposition of improving microbial functions that can be supportive for better plant growth and production. Understanding the crucial role of plant associated microbial communities, we propose how the associated microbial actions could be enhanced to improve plant growth-promoting mechanisms, with a particular emphasis on plant beneficial fungi. Additionally, we suggest the possible plant strategies to adapt to a harsh environment by manipulating plant microbiomes. However, our current understanding of the microbiome is still in its infancy, and the major perturbations, such as anthropocentric actions, are not fully understood. Therefore, this work highlights the importance of manipulating the beneficial plant microbiome to create more sustainable agriculture, particularly under different environmental stressors.
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Affiliation(s)
| | - Muhammad Ammar Javed
- Institute of Industrial Biotechnology, Government College University, Lahore, Pakistan
| | - Sher Ali
- Department of Food Engineering, Faculty of Animal Science and Food Engineering, University of São Paulo (USP), São Paulo, Brazil
| | | | - Baber Ali
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Abdul Salam
- Zhejiang Key Laboratory of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Sumaira
- Department of Biotechnology, Quaid-i-Azam University, Islamabad, Pakistan
| | - Romina Alina Marc
- Food Engineering Department, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj-Napoca, Romania
| | - Dalal Hussien M. Alkhalifah
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, Saudi Arabia
| | - Gustavo Santoyo
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
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