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Khuna S, Kumla J, Srinuanpan S, Lumyong S, Suwannarach N. Multifarious Characterization and Efficacy of Three Phosphate-Solubilizing Aspergillus Species as Biostimulants in Improving Root Induction of Cassava and Sugarcane Stem Cuttings. PLANTS (BASEL, SWITZERLAND) 2023; 12:3630. [PMID: 37896093 PMCID: PMC10610185 DOI: 10.3390/plants12203630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/15/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023]
Abstract
Several soil fungi significantly contribute to the enhancement of plant development by improving nutrient uptake and producing growth-promoting metabolites. In the present study, three strains of phosphate-solubilizing fungi, namely, Aspergillus chiangmaiensis SDBR-CMUI4, A. pseudopiperis SDBR-CMUI1, and A. pseudotubingensis SDBR-CMUO2, were examined for their plant-growth-promoting capabilities. The findings demonstrated that all fungi showed positive siderophore production, but only A. pseudopiperis can produce indole-3-acetic acid. All fungi were able to solubilize insoluble phosphate minerals [Ca3(PO4)2 and FePO4] by producing phosphatase enzymes and organic acids (oxalic, tartaric, and succinic acids). These three fungal species were grown at a water activity ranging from 0.837 to 0.998, pH values ranging from 4 to 9, temperatures between 4 and 40 °C, and 16-17% NaCl in order to evaluate their drought, pH, temperature, and salt tolerances, respectively. Moreover, the results indicated that A. pseudopiperis and A. pseudotubingensis were able to tolerate commercial insecticides (methomyl and propargite) at the recommended dosages for field application. The viability of each fungal strain in the inoculum was higher than 50% at 4 and 20 °C after 3 months of storage. Subsequently, all fungi were characterized as plant-growth-promoting strains by improving the root inductions of cassava (Manihot esculenta Crantz) and sugarcane (Saccharum officinarum L.) stem cuttings in greenhouse experiments. No symptoms of plant disease were observed with any of the treatments involving fungal inoculation and control. The cassava and sugarcane stem cuttings inoculated with fungal strains and supplemented with Ca3(PO4)2 exhibited significantly increased root lengths, shoot and root dry biomasses, chlorophyll concentrations, and cellular inorganic phosphate contents. Therefore, the application of these phosphate-solubilizing fungi is regarded as a new frontier in the induction of roots and the promotion of growth in plants.
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Affiliation(s)
- Surapong Khuna
- Center of Excellence in Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand; (S.K.); (J.K.); (S.S.); (S.L.)
- Office of Research Administration, Chiang Mai University, Chiang Mai 50200, Thailand
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Jaturong Kumla
- Center of Excellence in Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand; (S.K.); (J.K.); (S.S.); (S.L.)
- Office of Research Administration, Chiang Mai University, Chiang Mai 50200, Thailand
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Sirasit Srinuanpan
- Center of Excellence in Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand; (S.K.); (J.K.); (S.S.); (S.L.)
- Office of Research Administration, Chiang Mai University, Chiang Mai 50200, Thailand
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Saisamorn Lumyong
- Center of Excellence in Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand; (S.K.); (J.K.); (S.S.); (S.L.)
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
- Academy of Science, The Royal Society of Thailand, Bangkok 10300, Thailand
| | - Nakarin Suwannarach
- Center of Excellence in Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand; (S.K.); (J.K.); (S.S.); (S.L.)
- Office of Research Administration, Chiang Mai University, Chiang Mai 50200, Thailand
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Guo Y, Wang H, Liu Z, Chang Z. Comprehensive analysis of the microbiome and metabolome in pus from pyogenic liver abscess patients with and without diabetes mellitus. Front Microbiol 2023; 14:1211835. [PMID: 37426007 PMCID: PMC10328747 DOI: 10.3389/fmicb.2023.1211835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 05/31/2023] [Indexed: 07/11/2023] Open
Abstract
Introduction Pyogenic liver abscess (PLA) patients combined with diabetes mellitus (DM) tend to have more severe clinical manifestations than without DM. The mechanism responsible for this phenomenon is not entirely clear. The current study therefore aimed to comprehensively analyze the microbiome composition and metabolome in pus from PLA patients with and without DM, to determine the potential reasons for these differences. Methods Clinical data from 290 PLA patients were collected retrospectively. We analyzed the pus microbiota using 16S rDNA sequencing in 62 PLA patients. In addition, the pus metabolomes of 38 pus samples were characterized by untargeted metabolomics analysis. Correlation analyses of microbiota, metabolites and laboratory findings were performed to identify significant associations. Results PLA patients with DM had more severe clinical manifestations than PLA patients without DM. There were 17 discriminating genera between the two groups at the genus level, among which Klebsiella was the most discriminating taxa. The ABC transporters was the most significant differential metabolic pathway predicted by PICRUSt2. Untargeted metabolomics analysis showed that concentrations of various metabolites were significantly different between the two groups and seven metabolites were enriched in the ABC transporters pathway. Phosphoric acid, taurine, and orthophosphate in the ABC transporters pathway were negatively correlated with the relative abundance of Klebsiella and the blood glucose level. Discussion The results showed that the relative abundance of Klebsiella in the pus cavity of PLA patients with DM was higher than those without DM, accompanied by changes of various metabolites and metabolic pathways, which may be associated with more severe clinical manifestations.
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Vassileva M, Martos V, Del Moral LFG, Vassilev N. Effect of the Mode of Fermentation on the Behavior of Penicillium bilaiae in Conditions of Abiotic Stress. Microorganisms 2023; 11:microorganisms11041064. [PMID: 37110487 PMCID: PMC10143995 DOI: 10.3390/microorganisms11041064] [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: 03/22/2023] [Revised: 04/17/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023] Open
Abstract
The ability of a Penicillium bilaiae strain to support acid production and simultaneously solubilize inorganic sources of phosphate in conditions of submerged, solid-state fermentation (SSF) and immobilized cell system was examined in this study. Abiotic stress factors such as NaCl and different values of pH were introduced into the different fermentation process schemes to measure the fungal response. The results showed a higher tolerance of P. bilaiae when the fermentation process was carried out in solid-state and immobilized-cell conditions, which mimics the natural state of the soil microorganisms. The acidic culture conditions were not found to be suitable for fungal growth, which increased at a higher pH, with values of 4.0 and 6.0 being optimal for all types of fermentation. The presence of increasing amounts of NaCl provoked low biomass growth, titratable acidity, and simultaneous phosphate (P) solubilization. These results were, however, less pronounced at pH 4.0 and 6.0, particularly in conditions of SSF. Studying stress-tolerant microbial characteristics, particularly in different conditions and combinations of stress factors, is of great importance for further managing the overall microbial inoculants' production and formulation process as well as their applications in specific soil-plant systems.
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Affiliation(s)
- María Vassileva
- Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
| | - Vanessa Martos
- Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
| | | | - Nikolay Vassilev
- Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
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Nematophagous Fungi: A Review of Their Phosphorus Solubilization Potential. Microorganisms 2023; 11:microorganisms11010137. [PMID: 36677427 PMCID: PMC9867276 DOI: 10.3390/microorganisms11010137] [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: 11/07/2022] [Revised: 12/20/2022] [Accepted: 12/24/2022] [Indexed: 01/07/2023] Open
Abstract
Nematophagous fungi (NF) are a group of diverse fungal genera that benefit plants. The aim of this review is to increase comprehension about the importance of nematophagous fungi and their role in phosphorus solubilization to favor its uptake in agricultural ecosystems. They use different mechanisms, such as acidification in the medium, organic acids production, and the secretion of enzymes and metabolites that promote the bioavailability of phosphorus for plants. This study summarizes the processes of solubilization, in addition to the mechanisms of action and use of NF on crops, evidencing the need to include innovative alternatives for the implementation of microbial resources in management plans. In addition, it provides information to help understand the effect of NF to make phosphorus available for plants, showing how these biological means promote phosphorus uptake, thus improving productivity and yield.
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Li Q, Wu Q, Zhang T, Xiang P, Bao Z, Tu W, Li L, Wang Q. Phosphate mining activities affect crop rhizosphere fungal communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:156196. [PMID: 35623536 DOI: 10.1016/j.scitotenv.2022.156196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 05/20/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
Phosphate mining releases heavy metals into the surrounding environment. In this study, the effects of phosphate mining on rhizosphere soil fungi in surrounding crops, including Lactuca sativa var. angustata, Glycine max (L.) Merr., and Triticum aestivum L., were assessed. Phosphate mining significantly reduced the crop rhizosphere fungal diversity (P < 0.05). The relative abundances of Fusarium and Epicoccum increased in mining rhizosphere soil compared with the baseline. Beta diversity analysis indicated that phosphate mining led to the differentiation of fungal community structure in plant rhizospheres. Guild analysis indicated that different plant rhizosphere fungi developed various guilds in response to phosphate mining stress. Nine fungi were isolated from soil samples, with solubilization index values ranging from 1.1 to 2.5. Two efficient phosphate solubilizers, Epicoccum nigrum and Fusarium verticillioides, were enriched in phosphate mining rhizosphere soil samples. The dissolution kinetics of inorganic phosphorus and alkaline phosphatase activity assay showed strong phosphorus dissolution ability of the isolated fungi. Penicillium aculeatum, Trichoderma harzianum, Chaetomium globosum, and F. verticillioides showed strong tolerance to multiple heavy metals. This study furthers our understanding of how rhizosphere fungal ecology is affected by phosphate mining and provides important resources for the remediation of phosphate mining soil pollution.
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Affiliation(s)
- Qiang Li
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Qian Wu
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Ting Zhang
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Peng Xiang
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Zhijie Bao
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Wenying Tu
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Lijiao Li
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Qiangfeng Wang
- Biotechnology and Nuclear Technology Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, China.
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Vassileva M, Mendes GDO, Deriu MA, Benedetto GD, Flor-Peregrin E, Mocali S, Martos V, Vassilev N. Fungi, P-Solubilization, and Plant Nutrition. Microorganisms 2022; 10:microorganisms10091716. [PMID: 36144318 PMCID: PMC9503713 DOI: 10.3390/microorganisms10091716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 11/16/2022] Open
Abstract
The application of plant beneficial microorganisms is widely accepted as an efficient alternative to chemical fertilizers and pesticides. It was shown that annually, mycorrhizal fungi and nitrogen-fixing bacteria are responsible for 5 to 80% of all nitrogen, and up to 75% of P plant acquisition. However, while bacteria are the most studied soil microorganisms and most frequently reported in the scientific literature, the role of fungi is relatively understudied, although they are the primary organic matter decomposers and govern soil carbon and other elements, including P-cycling. Many fungi can solubilize insoluble phosphates or facilitate P-acquisition by plants and, therefore, form an important part of the commercial microbial products, with Aspergillus, Penicillium and Trichoderma being the most efficient. In this paper, the role of fungi in P-solubilization and plant nutrition will be presented with a special emphasis on their production and application. Although this topic has been repeatedly reviewed, some recent views questioned the efficacy of the microbial P-solubilizers in soil. Here, we will try to summarize the proven facts but also discuss further lines of research that may clarify our doubts in this field or open new perspectives on using the microbial and particularly fungal P-solubilizing potential in accordance with the principles of the sustainability and circular economy.
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Affiliation(s)
- Maria Vassileva
- Department of Chemical Engineering, University of Granada, C/Fuentenueva s/n, 18071 Granada, Spain
| | - Gilberto de Oliveira Mendes
- Laboratório de Microbiologia e Fitopatologia, Instituto de Ciências Agrárias, Universidade Federal de Uberlândia, Monte Carmelo 38500-000, Brazil
| | - Marco Agostino Deriu
- PolitoBIOMed Lab, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, Italy
| | | | - Elena Flor-Peregrin
- Department of Chemical Engineering, University of Granada, C/Fuentenueva s/n, 18071 Granada, Spain
| | - Stefano Mocali
- Council for Agricultural Research and Analysis of the Agricultural Economy, Research Centre for Agriculture and Environment, 50125 Firenze, Italy
| | - Vanessa Martos
- Institute of Biotechnology, University of Granada, 18071 Granada, Spain
| | - Nikolay Vassilev
- Department of Chemical Engineering, University of Granada, C/Fuentenueva s/n, 18071 Granada, Spain
- Institute of Biotechnology, University of Granada, 18071 Granada, Spain
- Correspondence:
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Byregowda R, Prasad SR, Oelmüller R, Nataraja KN, Prasanna Kumar MK. Is Endophytic Colonization of Host Plants a Method of Alleviating Drought Stress? Conceptualizing the Hidden World of Endophytes. Int J Mol Sci 2022; 23:ijms23169194. [PMID: 36012460 PMCID: PMC9408852 DOI: 10.3390/ijms23169194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/12/2022] [Accepted: 08/13/2022] [Indexed: 11/16/2022] Open
Abstract
In the wake of changing climatic conditions, plants are frequently exposed to a wide range of biotic and abiotic stresses at various stages of their development, all of which negatively affect their growth, development, and productivity. Drought is one of the most devastating abiotic stresses for most cultivated crops, particularly in arid and semiarid environments. Conventional breeding and biotechnological approaches are used to generate drought-tolerant crop plants. However, these techniques are costly and time-consuming. Plant-colonizing microbes, notably, endophytic fungi, have received increasing attention in recent years since they can boost plant growth and yield and can strengthen plant responses to abiotic stress. In this review, we describe these microorganisms and their relationship with host plants, summarize the current knowledge on how they “reprogram” the plants to promote their growth, productivity, and drought tolerance, and explain why they are promising agents in modern agriculture.
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Affiliation(s)
- Roopashree Byregowda
- Department of Seed Science and Technology, University of Agricultural Sciences, Bangalore 560065, India
- Department of Plant Physiology, Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich-Schiller-University, 07743 Jena, Germany
| | | | - Ralf Oelmüller
- Department of Plant Physiology, Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich-Schiller-University, 07743 Jena, Germany
- Correspondence:
| | - Karaba N. Nataraja
- Department of Crop Physiology, University of Agricultural Sciences, Bangalore 560065, India
| | - M. K. Prasanna Kumar
- Department of Plant Pathology, University of Agricultural Sciences, Bangalore 560065, India
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Jin T, Ren J, Li Y, Bai B, Liu R, Wang Y. Plant growth-promoting effect and genomic analysis of the P. putida LWPZF isolated from C. japonicum rhizosphere. AMB Express 2022; 12:101. [PMID: 35917000 PMCID: PMC9346032 DOI: 10.1186/s13568-022-01445-3] [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: 01/28/2022] [Accepted: 07/28/2022] [Indexed: 11/22/2022] Open
Abstract
Plant growth-promoting rhizobacteria are a type of beneficial bacteria which inhabit in the rhizosphere and possess the abilities to promote plant growth. Pseudomonas putida LWPZF is a plant growth-promoting bacterium isolated from the rhizosphere soil of Cercidiphyllum japonicum. Inoculation treatment with LWPZF could significantly promote the growth of C. japonicum seedlings. P. putida LWPZF has a variety of plant growth-promoting properties, including the ability to solubilize phosphate, synthesize ACC deaminase and IAA. The P. putida LWPZF genome contained a circular chromosome (6,259,530 bp) and a circular plasmid (160,969 bp) with G+C contents of 61.75% and 58.25%, respectively. There were 5632 and 169 predicted protein-coding sequences (CDSs) on the chromosome and the plasmid respectively. Genome sequence analysis revealed lots of genes associated with biosynthesis of IAA, pyoverdine, ACC deaminase, trehalose, volatiles acetoin and 2,3-butanediol, 4-hydroxybenzoate, as well as gluconic acid contributing phosphate solubilization. Additionally, we identified many heavy metal resistance genes, including arsenate, copper, chromate, cobalt-zinc-cadmium, and mercury. These results suggest that P. putida LWPZF shows strong potential in the fields of biofertilizer, biocontrol and heavy metal contamination soil remediation. The data presented in this study will allow us to better understand the mechanisms of plant growth promotion, biocontrol, and anti-heavy metal of P. putida LWPZF.
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Affiliation(s)
- Tingting Jin
- Department of Life Sciences, Changzhi University, Changzhi, 046011, People's Republic of China
| | - Jiahong Ren
- Department of Life Sciences, Changzhi University, Changzhi, 046011, People's Republic of China.
| | - Yunling Li
- Department of Life Sciences, Changzhi University, Changzhi, 046011, People's Republic of China
| | - Bianxia Bai
- Department of Life Sciences, Changzhi University, Changzhi, 046011, People's Republic of China
| | - Ruixiang Liu
- Department of Life Sciences, Changzhi University, Changzhi, 046011, People's Republic of China
| | - Ying Wang
- Department of Life Sciences, Changzhi University, Changzhi, 046011, People's Republic of China
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Vassileva M, Mocali S, Canfora L, Malusá E, García del Moral LF, Martos V, Flor-Peregrin E, Vassilev N. Safety Level of Microorganism-Bearing Products Applied in Soil-Plant Systems. FRONTIERS IN PLANT SCIENCE 2022; 13:862875. [PMID: 35574066 PMCID: PMC9096872 DOI: 10.3389/fpls.2022.862875] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 03/18/2022] [Indexed: 05/17/2023]
Abstract
The indiscriminate use of chemical fertilizers adversely affects ecological health and soil microbiota provoking loss of soil fertility and greater pathogen and pest presence in soil-plant systems, which further reduce the quality of food and human health. Therefore, the sustainability, circular economy, environmental safety of agricultural production, and health concerns made possible the practical realization of eco-friendly biotechnological approaches like organic matter amendments, biofertilizers, biopesticides, and reuse of agro-industrial wastes by applying novel and traditional methods and processes. However, the advancement in the field of Biotechnology/Agriculture is related to the safety of these microorganism-bearing products. While the existing regulations in this field are well-known and are applied in the preparation and application of waste organic matter and microbial inoculants, more attention should be paid to gene transfer, antibiotic resistance, contamination of the workers and environment in farms and biotech-plants, and microbiome changes. These risks should be carefully assessed, and new analytical tools and regulations should be applied to ensure safe and high-quality food and a healthy environment for people working in the field of bio-based soil amendments.
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Affiliation(s)
- Maria Vassileva
- Department of Chemical Engineering, Institute of Biotechnology, University of Granada, Granada, Spain
| | - Stefano Mocali
- Council for Agricultural Research and Economics, Research Centre for Agriculture and Environment, Rome, Italy
| | - Loredana Canfora
- Council for Agricultural Research and Economics, Research Centre for Agriculture and Environment, Rome, Italy
| | - Eligio Malusá
- Research Institute of Horticulture, Skierniewice, Poland
- Council for Agricultural Research and Economics, Center for Viticulture and Enology, Conegliano, Italy
| | | | - Vanessa Martos
- Department of Plant Physiology, University of Granada, Granada, Spain
| | - Elena Flor-Peregrin
- Department of Chemical Engineering, Institute of Biotechnology, University of Granada, Granada, Spain
| | - Nikolay Vassilev
- Department of Chemical Engineering, Institute of Biotechnology, University of Granada, Granada, Spain
- Institute of Biotechnology, University of Granada, Granada, Spain
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Li M, Wang J, Yao T, Wang Z, Zhang H, Li C. Isolation and Characterization of Cold-Adapted PGPB and Their Effect on Plant Growth Promotion. J Microbiol Biotechnol 2021; 31:1218-1230. [PMID: 34261854 PMCID: PMC9705895 DOI: 10.4014/jmb.2105.05012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 07/09/2021] [Accepted: 07/13/2021] [Indexed: 12/15/2022]
Abstract
Cold-adapted plant growth-promoting bacteria (PGPB) with multiple functions are an important resource for microbial fertilizers with low-temperature application. In this study, culturable cold-adapted PGPB strains with nitrogen fixation and phosphorus solubilization abilities were isolated. They were screened from root and rhizosphere of four dominant grass species in nondegraded alpine grasslands of the Qilian Mountains, China. Their other growth-promoting characteristics, including secretion of indole-3-acetic acid (IAA), production of siderophores and ACC deaminase, and antifungal activity, were further studied by qualitative and quantitative methods. In addition, whether the PGPB strains could still exert plant growth-promoting activity at 4°C was verified. The results showed that 67 isolates could maintain one or more growth-promoting traits at 4°C, and these isolates were defined as cold-adapted PGPB. They were divided into 8 genera by 16S rRNA gene sequencing and phylogenetic analysis, of which Pseudomonas (64.2%) and Serratia (13.4%) were the common dominant genera, and a few specific genera varied among the plant species. A test-tube culture showed that inoculation of Elymus nutans seedlings with cold-adapted PGPB possessing different functional characteristics had a significant growth-promoting effect under controlled low-temperature conditions, including the development of the roots and aboveground parts. Pearson correlation analysis revealed that different growth-promoting characteristics made different contributions to the development of the roots and aboveground parts. These cold-adapted PGPB can be used as excellent strain resources suitable for the near-natural restoration of degraded alpine grasslands or agriculture stock production in cold areas.
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Affiliation(s)
- Mingyuan Li
- College of Grassland Science, Gansu Agricultural University, Lanzhou 730000, P.R. China,College of Biologic and Geographic Sciences, Kashi University, Kashi 844000, P.R. China,Key Laboratory of Ecology and Biological Resources in Yarkand Oasis of Education of Xinjiang Uygur Autonomous Region, Kashi 844000, P.R. China
| | - Jilian Wang
- College of Biologic and Geographic Sciences, Kashi University, Kashi 844000, P.R. China,Key Laboratory of Ecology and Biological Resources in Yarkand Oasis of Education of Xinjiang Uygur Autonomous Region, Kashi 844000, P.R. China
| | - Tuo Yao
- College of Grassland Science, Gansu Agricultural University, Lanzhou 730000, P.R. China,Corresponding author Phone: +86-0931-7631227 E-mail:
| | - Zhenlong Wang
- College of Grassland Science, Gansu Agricultural University, Lanzhou 730000, P.R. China
| | - Huirong Zhang
- College of Grassland Science, Gansu Agricultural University, Lanzhou 730000, P.R. China
| | - Changning Li
- College of Grassland Science, Gansu Agricultural University, Lanzhou 730000, P.R. China
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11
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Vassileva M, Malusà E, Sas-Paszt L, Trzcinski P, Galvez A, Flor-Peregrin E, Shilev S, Canfora L, Mocali S, Vassilev N. Fermentation Strategies to Improve Soil Bio-Inoculant Production and Quality. Microorganisms 2021; 9:1254. [PMID: 34207668 PMCID: PMC8229917 DOI: 10.3390/microorganisms9061254] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 05/21/2021] [Accepted: 06/07/2021] [Indexed: 12/04/2022] Open
Abstract
The application of plant beneficial microorganisms has been widely accepted as an efficient alternative to chemical fertilizers and pesticides. Isolation and selection of efficient microorganisms, their characterization and testing in soil-plant systems are well studied. However, the production stage and formulation of the final products are not in the focus of the research, which affects the achievement of stable and consistent results in the field. Recent analysis of the field of plant beneficial microorganisms suggests a more integrated view on soil inoculants with a special emphasis on the inoculant production process, including fermentation, formulation, processes, and additives. This mini-review describes the different groups of fermentation processes and their characteristics, bearing in mind different factors, both nutritional and operational, which affect the biomass/spores yield and microbial metabolite activity. The characteristics of the final products of fermentation process optimization strategies determine further steps of development of the microbial inoculants. Submerged liquid and solid-state fermentation processes, fed-batch operations, immobilized cell systems, and production of arbuscular mycorrhiza are presented and their advantages and disadvantages are discussed. Recommendations for further development of the fermentation strategies for biofertilizer production are also considered.
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Affiliation(s)
- Maria Vassileva
- Department of Chemical Engineering, University of Granada, C/Fuentenueva s/n, 18071 Granada, Spain; (M.V.); (A.G.); (E.F.-P.)
| | - Eligio Malusà
- The National Institute of Horticultural Research, 96-100 Skierniewice, Poland; (E.M.); (L.S.-P.); (P.T.)
| | - Lidia Sas-Paszt
- The National Institute of Horticultural Research, 96-100 Skierniewice, Poland; (E.M.); (L.S.-P.); (P.T.)
| | - Pawel Trzcinski
- The National Institute of Horticultural Research, 96-100 Skierniewice, Poland; (E.M.); (L.S.-P.); (P.T.)
| | - Antonia Galvez
- Department of Chemical Engineering, University of Granada, C/Fuentenueva s/n, 18071 Granada, Spain; (M.V.); (A.G.); (E.F.-P.)
| | - Elena Flor-Peregrin
- Department of Chemical Engineering, University of Granada, C/Fuentenueva s/n, 18071 Granada, Spain; (M.V.); (A.G.); (E.F.-P.)
| | - Stefan Shilev
- Department of Microbiology and Environmental Biotechnology, University of Agriculture-Plovdiv, 4000 Plovdiv, Bulgaria;
| | - Loredana Canfora
- Research Centre for Agriculture and Environment, Council for Agricultural Research and Economics, 00184 Roma, Italy; (L.C.); (S.M.)
| | - Stefano Mocali
- Research Centre for Agriculture and Environment, Council for Agricultural Research and Economics, 00184 Roma, Italy; (L.C.); (S.M.)
| | - Nikolay Vassilev
- Department of Chemical Engineering, University of Granada, C/Fuentenueva s/n, 18071 Granada, Spain; (M.V.); (A.G.); (E.F.-P.)
- Institute of Biotechnology, University of Granada, 18071 Granada, Spain
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12
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Zai XM, Fan JJ, Hao ZP, Liu XM, Zhang WX. Effect of co-inoculation with arbuscular mycorrhizal fungi and phosphate solubilizing fungi on nutrient uptake and photosynthesis of beach palm under salt stress environment. Sci Rep 2021; 11:5761. [PMID: 33707467 PMCID: PMC7970979 DOI: 10.1038/s41598-021-84284-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 02/12/2021] [Indexed: 11/16/2022] Open
Abstract
Beach plum (Prunus maritima) is an ornamental plant, famous for its strong salt and drought stress tolerance. However, the poor growth rate of transplanted seedlings has seriously restricted its application in salinized soil. This study investigated the effects of inoculation with arbuscular mycorrhizal fungus (AMF), Funneliformis mosseae, and phosphate-solubilizing fungus (PSF), Apophysomyces spartima, on the growth, nutrient (N, P, and K) uptake, and photosynthesis of beach plum under saline (170 mM NaCl) and non-saline (0 mM NaCl) conditions. We aimed to find measures to increase the growth rate of beach plum in saline-alkali land and to understand the reasons for this increase. The results showed that salinization adversely affected colonization by AMF but positively increased PSF populations (increased by 33.9-93.3% over non-NaCl treatment). The dual application of AMF and PSF mitigated the effects of salt stress on all growth parameters and nutrient uptake, significantly for roots (dry weight and P and N contents increased by 91.0%, 68.9%, and 40%, respectively, over non-NaCl treatment). Salinization caused significant reductions in net photosynthetic rate (Pn), stomatal conductance (Gs), transpiration rate (E), and intercellular CO2 concentration (Ci) value, while inoculation with AMF and PSF inoculations significantly abated such reductions. The maximum efficiency of photosystem II (PSII) (Fv/Fm), the photochemical quenching coefficient (qP), and the nonphotochemical quenching (NPQ) values were affected little by inoculation with AMF, PSF, or both under non-NaCl treatments. However, plants inoculated with AMF and/or PSF had higher Fv/Fm, qP, and ФPSII values (increased by 72.5-188.1%) than the control under NaCl treatment, but not a higher NPQ value. We concluded that inoculation with AMF or PSF increased nutrient uptake and improved the gas-exchange and Chl fluorescence parameters of beach plum under salt stress environment. These effects could be strengthened by the combination of AMF and PSF, especially for nutrient uptake, root growth, and Pn, thereby alleviating the deleterious effects of NaCl stress on beach plum growth.
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Affiliation(s)
- Xue-Ming Zai
- Horticulture Department, Jinling Institute of Technology, Nanjing, 210038, People's Republic of China.
| | - Jun-Jun Fan
- Horticulture Department, Jinling Institute of Technology, Nanjing, 210038, People's Republic of China
| | - Zhen-Ping Hao
- Horticulture Department, Jinling Institute of Technology, Nanjing, 210038, People's Republic of China
| | - Xing-Man Liu
- Lianyungang Academy of Agricultural Sciences, Lianyungang, 222000, People's Republic of China.
| | - Wang-Xiang Zhang
- College of Forestry, Nanjing Forestry University, Nanjing, 210037, People's Republic of China
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13
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Vassilev N, Vassileva M, Martos V, Garcia del Moral LF, Kowalska J, Tylkowski B, Malusá E. Formulation of Microbial Inoculants by Encapsulation in Natural Polysaccharides: Focus on Beneficial Properties of Carrier Additives and Derivatives. FRONTIERS IN PLANT SCIENCE 2020; 11:270. [PMID: 32211014 PMCID: PMC7077505 DOI: 10.3389/fpls.2020.00270] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 02/20/2020] [Indexed: 05/23/2023]
Abstract
In the last 10-15 years, the wide application of bioformulated plant beneficial microorganisms is accepted as an effective alternative of chemical agro-products. Two main problems can be distinguished in their production and application: (a) economical competiveness based on the overall up-stream and down-stream operational costs, and (b) development of commercial products with a high soil-plant colonization potential in controlled conditions but not able to effectively mobilize soil nutrients and/or combat plant pathogens in the field. To solve the above problems, microbe-based formulations produced by immobilization methods are gaining attention as they demonstrate a large number of advantages compared to other solid and liquid formulations. This mini-review summarizes the knowledge of additional compounds that form part of the bioformulations. The additives can exert economical, price-decreasing effects as bulking agents or direct effects improving microbial survival during storage and after introduction into soil with simultaneous beneficial effects on soil and plants. In some studies, combinations of additives are used with a complex impact, which improves the overall characteristics of the final products. Special attention is paid to polysaccharide carriers and their derivates, which play stimulatory role on plants but are less studied. The mini-review also focuses on the potential difficulty in evaluating the effects of complex bio-formulations.
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Affiliation(s)
- Nikolay Vassilev
- Department of Chemical Engineering, Institute of Biotechnology, University of Granada, Granada, Spain
| | - Maria Vassileva
- Department of Chemical Engineering, Institute of Biotechnology, University of Granada, Granada, Spain
| | - Vanessa Martos
- Department of Plant Physiology, University of Granada, Granada, Spain
| | | | - Jolanta Kowalska
- Institute of Plant Protection – National Research Institute, Poznań, Poland
| | - Bartosz Tylkowski
- Chemical Technology Unit, Technology Centre of Catalonia, Tarragona, Spain
| | - Eligio Malusá
- Research Institute of Horticulture, Skierniewice, Poland
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14
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Dipta B, Bhardwaj S, Kaushal M, Kirti S, Sharma R. Obliteration of phosphorus deficiency in plants by microbial interceded approach. Symbiosis 2019. [DOI: 10.1007/s13199-019-00600-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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15
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Perera I, Subashchandrabose SR, Venkateswarlu K, Naidu R, Megharaj M. Consortia of cyanobacteria/microalgae and bacteria in desert soils: an underexplored microbiota. Appl Microbiol Biotechnol 2018; 102:7351-7363. [PMID: 29982925 DOI: 10.1007/s00253-018-9192-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 06/21/2018] [Accepted: 06/21/2018] [Indexed: 10/28/2022]
Abstract
Desert ecosystem is generally considered as a lifeless habitat with extreme environmental conditions although it is colonized by extremophilic microorganisms. Cyanobacteria, microalgae, and bacteria in these habitats could tolerate harsh and rapidly fluctuating environmental conditions, intense ultraviolet radiation, and lack of water, leading to cell desiccation. They possess valuable metabolites withstanding extreme environmental conditions and make them good candidates for industrial applications. Moreover, most natural microorganisms in these extreme habitats exist as consortia that provide robustness and extensive metabolic capabilities enabling them to establish important relationships in desert environments. Engineering of such consortia of cyanobacteria, microalgae, and bacteria would be functional in the sustainable development of deserts through improving soil fertility, water preservation, primary production, pollutant removal, and maintaining soil stability. Modern tools and techniques would help in constructing highly functional cyanobacterial/microalgal-bacterial consortia that are greatly useful in the establishment of vegetation in deserts as well as in biotechnological applications.
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Affiliation(s)
- Isiri Perera
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, ATC Building, University Drive, Callaghan, Newcastle, NSW, 2308, Australia
| | - Suresh R Subashchandrabose
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, ATC Building, University Drive, Callaghan, Newcastle, NSW, 2308, Australia.,Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), The University of Newcastle, ATC Building, Callaghan, Newcastle, NSW, 2308, Australia
| | | | - Ravi Naidu
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, ATC Building, University Drive, Callaghan, Newcastle, NSW, 2308, Australia.,Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), The University of Newcastle, ATC Building, Callaghan, Newcastle, NSW, 2308, Australia
| | - Mallavarapu Megharaj
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, ATC Building, University Drive, Callaghan, Newcastle, NSW, 2308, Australia. .,Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), The University of Newcastle, ATC Building, Callaghan, Newcastle, NSW, 2308, Australia.
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16
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Multifunctional potential of endophytic and rhizospheric microbial isolates associated with Butia purpurascens roots for promoting plant growth. Antonie van Leeuwenhoek 2018; 111:2157-2174. [DOI: 10.1007/s10482-018-1108-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 05/24/2018] [Indexed: 01/29/2023]
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17
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He AL, Niu SQ, Zhao Q, Li YS, Gou JY, Gao HJ, Suo SZ, Zhang JL. Induced Salt Tolerance of Perennial Ryegrass by a Novel Bacterium Strain from the Rhizosphere of a Desert Shrub Haloxylon ammodendron. Int J Mol Sci 2018; 19:ijms19020469. [PMID: 29401742 PMCID: PMC5855691 DOI: 10.3390/ijms19020469] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 01/31/2018] [Accepted: 02/01/2018] [Indexed: 11/16/2022] Open
Abstract
Drought and soil salinity reduce agricultural output worldwide. Plant-growth-promoting rhizobacteria (PGPR) can enhance plant growth and augment plant tolerance to biotic and abiotic stresses. Haloxylon ammodendron, a C4 perennial succulent xerohalophyte shrub with excellent drought and salt tolerance, is naturally distributed in the desert area of northwest China. In our previous work, a bacterium strain numbered as M30-35 was isolated from the rhizosphere of H. ammodendron in Tengger desert, Gansu province, northwest China. In current work, the effects of M30-35 inoculation on salt tolerance of perennial ryegrass were evaluated and its genome was sequenced to identify genes associated with plant growth promotion. Results showed that M30-35 significantly enhanced growth and salt tolerance of perennial ryegrass by increasing shoot fresh and dry weights, chlorophyll content, root volume, root activity, leaf catalase activity, soluble sugar and proline contents that contributed to reduced osmotic potential, tissue K⁺ content and K⁺/Na⁺ ratio, while decreasing malondialdehyde (MDA) content and relative electric conductivity (REC), especially under higher salinity. The genome of M30-35 contains 4421 protein encoding genes, 12 rRNA, 63 tRNA-encoding genes and four rRNA operons. M30-35 was initially classified as a new species in Pseudomonas and named as Pseudomonas sp. M30-35. Thirty-four genes showing homology to genes associated with PGPR traits and abiotic stress tolerance were identified in Pseudomonas sp. M30-35 genome, including 12 related to insoluble phosphorus solubilization, four to auxin biosynthesis, four to other process of growth promotion, seven to oxidative stress alleviation, four to salt and drought tolerance and three to cold and heat tolerance. Further study is needed to clarify the correlation between these genes from M30-35 and the salt stress alleviation of inoculated plants under salt stress. Overall, our research indicated that desert shrubs appear rich in PGPRs that can help important crops tolerate abiotic stress.
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Affiliation(s)
- Ao-Lei He
- State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Shu-Qi Niu
- State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Qi Zhao
- State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Yong-Sheng Li
- State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Jing-Yi Gou
- State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Hui-Juan Gao
- State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Sheng-Zhou Suo
- State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Jin-Lin Zhang
- State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China.
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18
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Sun W, Qian X, Gu J, Wang XJ, Li Y, Duan ML. Effects of inoculation with organic-phosphorus-mineralizing bacteria on soybean (Glycine max) growth and indigenous bacterial community diversity. Can J Microbiol 2017; 63:392-401. [PMID: 28177785 DOI: 10.1139/cjm-2016-0758] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Three different organic-phosphorus-mineralizing bacteria (OPMB) strains were inoculated to soil planted with soybean (Glycine max), and their effects on soybean growth and indigenous bacterial community diversity were investigated. Inoculation with Pseudomonas fluorescens Z4-1 and Brevibacillus agri L7-1 increased organic phosphorus degradation by 22% and 30%, respectively, compared with the control at the mature stage. Strains P. fluorescens Z4-1 and B. agri L7-1 significantly improved the soil alkaline phosphatase activity, average well color development, and the soybean root activity. Terminal restriction fragment length polymorphism analysis demonstrated that P. fluorescens Z4-1 and B. agri L7-1 could persist in the soil at relative abundances of 2.0%-6.4% throughout soybean growth. Thus, P. fluorescens Z4-1 and B. agri L7-1 could potentially be used in organic-phosphorus-mineralizing biofertilizers. OPMB inoculation altered the genetic structure of the soil bacterial communities but had no apparent influence on the carbon source utilization profiles of the soil bacterial communities. Principal components analysis showed that the changes in the carbon source utilization profiles of bacterial community depended mainly on the plant growth stages rather than inoculation with OPMB. The results help to understand the evolution of the soil bacterial community after OPMB inoculation.
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Affiliation(s)
- Wei Sun
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Xun Qian
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Jie Gu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Xiao-Juan Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Yang Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Man-Li Duan
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
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19
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Identification and characterization of the rhizosphere phosphate-solubilizing bacterium Pseudomonas frederiksbergensis JW-SD2 and its plant growth-promoting effects on poplar seedlings. ANN MICROBIOL 2016. [DOI: 10.1007/s13213-016-1237-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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20
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Vassilev N, Malusa E, Requena AR, Martos V, López A, Maksimovic I, Vassileva M. Potential application of glycerol in the production of plant beneficial microorganisms. J Ind Microbiol Biotechnol 2016; 44:735-743. [PMID: 27514665 DOI: 10.1007/s10295-016-1810-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Accepted: 07/30/2016] [Indexed: 12/24/2022]
Abstract
This review highlights the importance of research for development of biofertilizer and biocontrol products based on the use of glycerol for further process scale-up to industrial microbiology. Glycerol can be used successfully in all stages of production of plant beneficial microorganisms. It serves as an excellent substrate in both submerged and solid-state fermentation processes with free and immobilized microbial cells. Glycerol is also one of the most attractive formulation agents that ensures high cell density and viability including in harsh environmental conditions. Future research is discussed to make this inexpensive material a base for industrial production of plant beneficial microorganisms.
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Affiliation(s)
- Nikolay Vassilev
- Institute of Biotechnology, University of Granada, Granada, Spain. .,Department of Chemical Engineering, University of Granada, c/Fuentenueva s/n, 18071, Granada, Spain.
| | - Eligio Malusa
- Unit of Turin, CRA-Centre for Plant-Soil Systems, Turin, Italy
| | | | - Vanessa Martos
- Institute of Biotechnology, University of Granada, Granada, Spain
| | - Ana López
- Institute of Biotechnology, University of Granada, Granada, Spain
| | | | - Maria Vassileva
- Institute of Biotechnology, University of Granada, Granada, Spain
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21
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Zeng Q, Wu X, Wen X. Identification and characterization of the rhizosphere phosphate-solubilizing bacterium Pseudomonas frederiksbergensis JW-SD2, and its plant growth-promoting effects on poplar seedlings. ANN MICROBIOL 2016. [DOI: 10.1007/s13213-016-1220-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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22
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Effects of Soluble Phosphate on Phosphate-Solubilizing Characteristics and Expression of gcd Gene in Pseudomonas frederiksbergensis JW-SD2. Curr Microbiol 2015; 72:198-206. [DOI: 10.1007/s00284-015-0938-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 09/27/2015] [Indexed: 10/22/2022]
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23
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Vassilev N, Vassileva M, Lopez A, Martos V, Reyes A, Maksimovic I, Eichler-Löbermann B, Malusà E. Unexploited potential of some biotechnological techniques for biofertilizer production and formulation. Appl Microbiol Biotechnol 2015; 99:4983-96. [DOI: 10.1007/s00253-015-6656-4] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Revised: 04/26/2015] [Accepted: 04/27/2015] [Indexed: 11/24/2022]
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24
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Li X, Luo L, Yang J, Li B, Yuan H. Mechanisms for Solubilization of Various Insoluble Phosphates and Activation of Immobilized Phosphates in Different Soils by an Efficient and Salinity-Tolerant Aspergillus niger Strain An2. Appl Biochem Biotechnol 2015; 175:2755-68. [DOI: 10.1007/s12010-014-1465-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 12/21/2014] [Indexed: 11/29/2022]
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25
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Moreno Quevedo ÁP, Osorio Vega NW, González Murillo OA. In vitro DISSOLUTION OF ACIDULATED ROCK PHOSPHATE BY PHOSPHATE SOLUBILIZING MICROORGANISMS. ACTA BIOLÓGICA COLOMBIANA 2014. [DOI: 10.15446/abc.v20n2.42713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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26
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He H, Qian TT, Liu WJ, Jiang H, Yu HQ. Biological and chemical phosphorus solubilization from pyrolytical biochar in aqueous solution. CHEMOSPHERE 2014; 113:175-181. [PMID: 25065807 DOI: 10.1016/j.chemosphere.2014.05.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 05/06/2014] [Accepted: 05/06/2014] [Indexed: 06/03/2023]
Abstract
Biochar, a massive byproduct of biomass pyrolysis during biofuel generation, is a potential P source for the mitigation of P depletion. However, the chemical and biological effect of the release of P from biochar is still unclear. In this study, two types of Lysinibacillus strains (Lysinibacillussphaericus D-8 and Lysinibacillus fusiformis A-5) were separated from a sediment and their P-solubilizing characteristics to biochar was first reported. Compared with the bacterial mixture W-1 obtained from a bioreactor, the introduction of A-5 and D-8 significantly improved P solubilization. The release of P from biochar by A-5 and D-8 reached 54% and 47%, respectively, which is comparable to that under rigorous chemical conditions. SEM images and XPS spectra demonstrated that the physicochemical properties of the biochar surface have changed in the process which may be caused by the activities of the microbes.
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Affiliation(s)
- Hui He
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Ting-Ting Qian
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Wu-Jun Liu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Hong Jiang
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
| | - Han-Qing Yu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
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27
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Inoculation with Pseudomonas putida PCI2, a phosphate solubilizing rhizobacterium, stimulates the growth of tomato plants. Symbiosis 2014. [DOI: 10.1007/s13199-014-0281-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Rolli E, Marasco R, Vigani G, Ettoumi B, Mapelli F, Deangelis ML, Gandolfi C, Casati E, Previtali F, Gerbino R, Pierotti Cei F, Borin S, Sorlini C, Zocchi G, Daffonchio D. Improved plant resistance to drought is promoted by the root-associated microbiome as a water stress-dependent trait. Environ Microbiol 2014; 17:316-31. [DOI: 10.1111/1462-2920.12439] [Citation(s) in RCA: 339] [Impact Index Per Article: 33.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 12/20/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Eleonora Rolli
- Department of Food, Environmental and Nutritional Sciences, DeFENS; University of Milan; Milan Italy
| | - Ramona Marasco
- Department of Food, Environmental and Nutritional Sciences, DeFENS; University of Milan; Milan Italy
| | - Gianpiero Vigani
- Department of Agricultural and Environmental Sciences - Production, Landscape, Agroenergy, DISAA; University of Milan; Milan Italy
| | - Besma Ettoumi
- Laboratory of Microbiology and Active Biomolecules (LMBA); Faculté des Sciences de Tunis; Campus Universitaire; Tunis Tunisia
| | - Francesca Mapelli
- Department of Food, Environmental and Nutritional Sciences, DeFENS; University of Milan; Milan Italy
| | - Maria Laura Deangelis
- Department of Agricultural and Environmental Sciences - Production, Landscape, Agroenergy, DISAA; University of Milan; Milan Italy
| | - Claudio Gandolfi
- Department of Agricultural and Environmental Sciences - Production, Landscape, Agroenergy, DISAA; University of Milan; Milan Italy
| | - Enrico Casati
- Department of Environmental Science; University of Milan Bicocca; Milan Italy
| | - Franco Previtali
- Department of Environmental Science; University of Milan Bicocca; Milan Italy
| | | | | | - Sara Borin
- Department of Food, Environmental and Nutritional Sciences, DeFENS; University of Milan; Milan Italy
| | - Claudia Sorlini
- Department of Food, Environmental and Nutritional Sciences, DeFENS; University of Milan; Milan Italy
| | - Graziano Zocchi
- Department of Agricultural and Environmental Sciences - Production, Landscape, Agroenergy, DISAA; University of Milan; Milan Italy
| | - Daniele Daffonchio
- Department of Food, Environmental and Nutritional Sciences, DeFENS; University of Milan; Milan Italy
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29
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Kanse OS, Whitelaw-Weckert M, Kadam TA, Bhosale HJ. Phosphate solubilization by stress-tolerant soil fungus Talaromyces funiculosus SLS8 isolated from the Neem rhizosphere. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-014-0839-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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30
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Differential effects of immobilized and free forms of phosphate-solubilizing fungal strains on the growth and phosphorus uptake of mung bean plants. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-013-0795-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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31
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Microbial Diversity in Soil under Potato Cultivation from Cold Desert Himalaya, India. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/767453] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Mana village (Chamoli district, Uttarakhand, India), situated in high altitudes (3,238 m above mean sea level) of Indian Himalayan region, represents cold desert climatic conditions. At Mana, potato is grown from May to September, while the site remains snow clad for approximately six months (from October to April). Soil samples, collected from Mana potato fields, were analyzed for cultivable microbial diversity along with the chemical and enzymatic properties. The analysis revealed colonization of soil by microflora in moderate numbers (up to 107 CFU/g soil) with limited species level. 25 morphologically distinct microbial isolates belonging to Gram +ve and Gram −ve bacteria, actinomycetes, and fungi including yeast were isolated. The bacteria were tentatively identified as species of Bacillus and Pseudomonas, while the majority of the fungal isolates belonged to the species of Penicillium. These microbial isolates possessed plant growth promotion and biocontrol properties assessed mainly in terms of production of indole acetic acid and hydrolytic enzymes and phosphate solubilization. The soil, when used as “inoculum” in plant based bioassays, exhibited positive influence on plant growth related parameters. The limited diversity of cold tolerant microbial species also extends opportunity to understand the resilience possessed by these organisms under low temperature environment.
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Vassilev N, Martos E, Mendes G, Martos V, Vassileva M. Biochar of animal origin: a sustainable solution to the global problem of high-grade rock phosphate scarcity? JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2013; 93:1799-804. [PMID: 23504602 DOI: 10.1002/jsfa.6130] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Revised: 02/14/2013] [Accepted: 03/15/2013] [Indexed: 05/23/2023]
Abstract
Phosphorus (P) is an essential element for all living organisms. However, in soil-plant systems, this nutrient is the most limiting, leading to frequent applications of soluble P fertilisers. Their excessive use provokes alterations in the natural P cycle, soil biodiversity and ecological equilibrium and is the main reason for the eutrophication of water, with consequences on food safety. Biotechnology offers a number of sustainable solutions that can mitigate these problems by using various waste materials as a source of P and, on the other hand, their solubilisation by selected micro-organisms. This review present results on the solubilisation of animal bone char with high phosphate content by micro-organisms to produce organic acids such as lactic acid, citric acid and itaconic acid. All experiments were performed under conditions of liquid submerged and solid state fermentation processes. Freely suspended and immobilised cells of the corresponding microbial cultures were employed using substrates characterised by low cost and abundance. Other alternative technologies are discussed as well in order to stimulate further studies in this field, bearing in mind the progressive increase in P fertiliser prices based on high global P consumption and the scarcity of rock phosphate reserves.
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Affiliation(s)
- Nikolay Vassilev
- Department of Chemical Engineering, University of Granada, Granada, Spain; Institute of Biotechnology, University of Granada, Granada, Spain.
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