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  • 1
    Online Resource
    Online Resource
    Metagenomic Survey of Tomato Rhizosphere Microbiome Using the Shotgun Approach
    American Society for Microbiology ; 2022
    In:  Microbiology Resource Announcements Vol. 11, No. 2 ( 2022-02-17)
    Details
    In: Microbiology Resource Announcements, American Society for Microbiology, Vol. 11, No. 2 ( 2022-02-17)
    Abstract: Food sustainability, e.g., fruit and vegetables, is a major agricultural problem that requires monitoring. Rhizosphere microbiomes’ abundance and functionality are essential in promoting tomato plants’ growth and health. We selected farms in South Africa’s North West Province and present the metagenomes of their tomato rhizospheres and associated functional potentials.
    Type of Medium: Online Resource
    ISSN: 2576-098X
    URL: Article
    DOI: 10.1128/mra.01131-21
    Language: English
    Publisher: American Society for Microbiology
    Publication Date: 2022
    detail.hit.zdb_id: 2968655-6
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  • 2
    Online Resource
    Online Resource
    Quantifying the Respiratory Pattern of Rhizosphere Microbial Communities in Healthy and Diseased Tomato Plants Using Carbon Substrates
    Springer Science and Business Media LLC ; 2023
    In:  Journal of Soil Science and Plant Nutrition
    Details
    In: Journal of Soil Science and Plant Nutrition, Springer Science and Business Media LLC
    Abstract: The sustainable production of tomatoes ( Solanum lycopersicum ) is important, and this can be achieved by determining the rate of respiration of microbes in the tomato plants' rhizosphere soil. This study aimed at the potential of microbes to utilize carbon substrates embedded in the rhizosphere soil thereby contributing to the healthy nature of the tomato plants. The potential soil physiochemical features and utilization of carbon substrate by soil microorganisms as a result of their respiration to reveal their functions in the ecosystem were evaluated. The soil samples were amassed from the healthy tomato plant rhizosphere, diseased tomatoes, and bulk soil in this study. The physiochemical features and carbon substrate utilization in the bulk soil samples, and rhizosphere samples of powdery diseased, and healthy tomato plants were assessed. The MicroRespTM procedure was used to determine the community-level physiological profiles (CLPP) employing fifteen (15) carbon (C) substrates selected based on their importance to microbial communities embedded in the soil samples. Our results revealed that various physiochemical properties, moisture content, water retention, and C substrates including sugar, amino acid, and carboxylic acid were greater in HR and the substrates were not significantly different ( p   〈  0.05). The study reveals higher soil respiration in HR as a result of the microbial communities inhabiting HR utilizing more of the C-substrates. This investigation contributes to the tomato plant's healthy state as the microbial communities utilized carbon substrate compared to DR after employing the CLPP assays.
    Type of Medium: Online Resource
    ISSN: 0718-9508 , 0718-9516
    URL: Article
    DOI: 10.1007/s42729-023-01504-z
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 2611093-3
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  • 3
    Online Resource
    Online Resource
    Table 3: Rhizobacteria as biocontrol agents in tomato and other crop plant rhizosphere.
    PeerJ ; 2022
    In:  PeerJ Vol. 10 ( 2022-05-31), p. e13405-
    Details
    In: PeerJ, PeerJ, Vol. 10 ( 2022-05-31), p. e13405-
    Abstract: Food safety is a significant challenge worldwide, from plantation to cultivation, especially for perishable products such as tomatoes. New eco-friendly strategies are needed, and beneficial microorganisms might be a sustainable solution. This study demonstrates bacteria activity in the tomato plant rhizosphere. Further, it investigates the rhizobacteria’s structure, function, and diversity in soil. Rhizobacteria that promote the growth and development of tomato plants are referred to as plant growth-promoting bacteria (PGPR). They form a series of associations with plants and other organisms in the soil through a mutualistic relationship where both parties benefit from living together. It implies the antagonistic activities of the rhizobacteria to deter pathogens from invading tomato plants through their roots. Some PGPR are regarded as biological control agents that hinder the development of spoilage organisms and can act as an alternative for agricultural chemicals that may be detrimental to the health of humans, animals, and some of the beneficial microbes in the rhizosphere soil. These bacteria also help tomato plants acquire essential nutrients like potassium (K), magnesium (Mg), phosphorus (P), and nitrogen (N). Some rhizobacteria may offer a solution to low tomato production and help tackle food insecurity and farming problems. In this review, an overview of soil-inhabiting rhizobacteria focused on improving the sustainable production of Solanum lycopersicum .
    Type of Medium: Online Resource
    ISSN: 2167-8359
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    DOI: 10.7717/peerj.13405
    DOI: 10.7717/peerj.13405/fig-1
    DOI: 10.7717/peerj.13405/fig-2
    DOI: 10.7717/peerj.13405/fig-3
    DOI: 10.7717/peerj.13405/table-1
    DOI: 10.7717/peerj.13405/table-2
    DOI: 10.7717/peerj.13405/table-3
    Language: English
    Publisher: PeerJ
    Publication Date: 2022
    detail.hit.zdb_id: 2703241-3
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  • 4
    Online Resource
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    Supplemental Information 1: Supplemental Tables.
    PeerJ ; 2023
    In:  PeerJ Vol. 11 ( 2023-06-02), p. e15432-
    Details
    In: PeerJ, PeerJ, Vol. 11 ( 2023-06-02), p. e15432-
    Abstract: The microbiomes living in the rhizosphere soil of the tomato plant contribute immensely to the state of health of the tomato plant alongside improving sustainable agriculture. With the aid of shotgun metagenomics sequencing, we characterized the putative functional genes (plant-growth-promoting and disease-resistant genes) produced by the microbial communities dwelling in the rhizosphere soil of healthy and powdery mildew-diseased tomato plants. The results identified twenty-one (21) plant growth promotion (PGP) genes in the microbiomes inhabiting the healthy rhizosphere (HR) which are more predomiant as compared to diseased rhizosphere (DR) that has nine (9) genes and four (4) genes in bulk soil (BR). Likewise, we identified some disease-resistant genes which include nucleotide binding genes and antimicrobial genes. Our study revealed fifteen (15) genes in HR which made it greater in comparison to DR that has three (3) genes and three (3) genes in bulk soil. Further studies should be conducted by isolating these microorganisms and introduce them to field experiments for cultivation of tomatoes.
    Type of Medium: Online Resource
    ISSN: 2167-8359
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    DOI: 10.7717/peerj.15432
    DOI: 10.7717/peerj.15432/fig-1
    DOI: 10.7717/peerj.15432/fig-2
    DOI: 10.7717/peerj.15432/fig-3
    DOI: 10.7717/peerj.15432/fig-4
    DOI: 10.7717/peerj.15432/fig-5
    DOI: 10.7717/peerj.15432/fig-6
    DOI: 10.7717/peerj.15432/fig-7
    DOI: 10.7717/peerj.15432/fig-8
    DOI: 10.7717/peerj.15432/table-1
    DOI: 10.7717/peerj.15432/table-2
    DOI: 10.7717/peerj.15432/supp-1
    Language: English
    Publisher: PeerJ
    Publication Date: 2023
    detail.hit.zdb_id: 2703241-3
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  • 5
    Online Resource
    Online Resource
    Microbial Community and Metabolic Pathways Analyses of the Rhizosphere of Healthy and Powdery Mildew Diseased Solanum Lycopersicum in an Inorganic Farming Field
    Elsevier BV ; 2022
    In:  SSRN Electronic Journal
    Details
    In: SSRN Electronic Journal, Elsevier BV
    Type of Medium: Online Resource
    ISSN: 1556-5068
    URL: Article
    DOI: 10.2139/ssrn.4025952
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2022
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  • 6
    Online Resource
    Online Resource
    Fungi That Promote Plant Growth in the Rhizosphere Boost Crop Growth
    MDPI AG ; 2023
    In:  Journal of Fungi Vol. 9, No. 2 ( 2023-02-10), p. 239-
    Details
    In: Journal of Fungi, MDPI AG, Vol. 9, No. 2 ( 2023-02-10), p. 239-
    Abstract: The fungi species dwelling in the rhizosphere of crop plants, revealing functions that endeavor sustainability of the plants, are commonly referred to as ‘plant-growth-promoting fungi’ (PGPF). They are biotic inducers that provide benefits and carry out important functions in agricultural sustainability. The problem encountered in the agricultural system nowadays is how to meet population demand based on crop yield and protection without putting the environment and human and animal health at risk based on crop production. PGPF including Trichoderma spp., Gliocladium virens, Penicillium digitatum, Aspergillus flavus, Actinomucor elegans, Podospora bulbillosa, Arbuscular mycorrhizal fungi, etc., have proven their ecofriendly nature to ameliorate the production of crops by improving the growth of the shoots and roots of crop plants, the germination of seeds, the production of chlorophyll for photosynthesis, and the abundant production of crops. PGPF’s potential mode of action is as follows: the mineralization of the major and minor elements required to support plants’ growth and productivity. In addition, PGPF produce phytohormones, induced resistance, and defense-related enzymes to inhibit or eradicate the invasion of pathogenic microbes, in other words, to help the plants while encountering stress. This review portrays the potential of PGPF as an effective bioagent to facilitate and promote crop production, plant growth, resistance to disease invasion, and various abiotic stresses.
    Type of Medium: Online Resource
    ISSN: 2309-608X
    URL: Article
    DOI: 10.3390/jof9020239
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2784229-0
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  • 7
    Online Resource
    Online Resource
    Data_Sheet_1.docx
    Frontiers Media SA ; 2022
    In:  Frontiers in Sustainable Food Systems Vol. 6 ( 2022-5-11)
    Details
    In: Frontiers in Sustainable Food Systems, Frontiers Media SA, Vol. 6 ( 2022-5-11)
    Abstract: The microorganisms inhabiting soil perform unique functions in the growth and development of plants. However, little is known about how plant health status affects their potential functions. We examined the functional diversity of the microbiome inhabiting the rhizosphere of powdery mildew diseased and healthy tomato plants alongside the bulk soils in South Africa's Northwest Province employing a shotgun metagenomics approach. We envisaged that the functional categories would be abundant in the healthy rhizosphere (HR) of the tomato plant. We collected soil from the rhizosphere of healthy, powdery mildew diseased tomato plants (DR), and bulk soil (BR). After that, their DNA was extracted. The extracted DNA was subjected to shotgun metagenomic sequencing. Our result using the SEED subsystem revealed that a total of fifteen (15) functional categories dominated the healthy rhizosphere, seven (7) functional categories dominated the diseased rhizosphere. At the same time, six (6) functions dominated the bulk soil. Alpha (α) diversity assessment did not reveal a significant difference ( p & gt; 0.05) in all the soil samples, but a considerable difference was observed for beta (β) diversity ( P = 0.01). The functional categories obtained in this research were highly abundant in HR. Therefore, this study shows that the functions groups of the rhizosphere microbiomes were more abundant in HR samples as compared to others. The high prevalence of functions groups associated with rhizobiomes in the tomato rhizosphere indicates the need for more research to establish the functional genes associated with these rhizosphere microbiomes.
    Type of Medium: Online Resource
    ISSN: 2571-581X
    URL: Article
    URL: Article
    DOI: 10.3389/fsufs.2022.894312
    DOI: 10.3389/fsufs.2022.894312.s001
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2022
    detail.hit.zdb_id: 2928540-9
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  • 8
    Online Resource
    Online Resource
    Synergistic relationship of endophyte-nanomaterials to alleviate abiotic stress in plants
    Frontiers Media SA ; 2022
    In:  Frontiers in Environmental Science Vol. 10 ( 2022-11-24)
    Details
    In: Frontiers in Environmental Science, Frontiers Media SA, Vol. 10 ( 2022-11-24)
    Abstract: Plant responses to abiotic stresses through diverse mechanisms and strategic measures in utilizing nanomaterials have positively impacted crop productivity. Stress can cause membrane depletion, reactive oxygen species formation, cell toxicity and death, and reduction in plant growth. However, nanomaterials can mitigate some of the negative impacts of abiotic stresses and enhance crop yield. Some endophytic microbes can synthesize nanomaterials, which can maintain and enhance plant health and growth via nitrogen fixation, siderophore production, phytohormones synthesis, and enzyme production without any pathological effects. Nanoparticle-synthesizing endophytes also help boost plant biochemical and physiological functions by ameliorating the impact of abiotic stresses. The increase in the use and implementation of nano-growth enhancers from beneficial microbes, such as nano-biofertilizers, nano-pesticides, nano-herbicides, and nano-fungicides are considered safe and eco-friendly in ensuring sustainable agriculture and reduction of agrochemical usage. Promisingly, nanotechnology concepts in agriculture aim to sustain plant health and protect plants from oxidative stresses through the activation of anti-oxidative enzymes. The mechanisms and the use of nanomaterials to relieve abiotic plant stress still require further discussion in the literature. Therefore, this review is focused on endophytic microbes, the induction of abiotic stress tolerance in plants, and the use of nanomaterials to relieve abiotic plant stresses.
    Type of Medium: Online Resource
    ISSN: 2296-665X
    URL: Article
    DOI: 10.3389/fenvs.2022.1015897
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2022
    detail.hit.zdb_id: 2741535-1
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  • 9
    Online Resource
    Online Resource
    Biocontrol Potential of Rhizospheric Fungi from 〈i〉Moringa Oleifera〈/i〉, their Phytochemicals and Secondary Metabolite Assessment Against Spoilage Fungi of Sweet Orange (〈i〉Citrus Sinensis〈/i〉)
    Asian Online Journals ; 2020
    In:  Asian Journal of Applied Sciences Vol. 8, No. 1 ( 2020-02-15)
    Details
    In: Asian Journal of Applied Sciences, Asian Online Journals, Vol. 8, No. 1 ( 2020-02-15)
    Abstract: This investigative study aimed to assess the antifungal potential of Trichoderma viride and Penicillium chrysogenum isolated from Moringa oleifera rhizosphere against spoilage fungi of Citrus sinensis, as well as evaluate their phytochemical profile.  The bio-agents (T. viride and P. chrysogenum) and the Citrus sinensis spoilage fungi were isolated following standard microbiological protocols. Initial in-vitro screening of the isolated bio-agents against the citrus pathogens in the confrontational assay was done. Phytochemical screening and antifungal activity of metabolites produced by the bioagents against the pathogens were also investigated. The inhibitory concentration (minimum/maximum: MIC and MFC) of the bioagent metabolites on the citrus pathogens was also assessed. The isolation screening investigation indicated that citrus pathogens isolated were P. digitatum, A. wenti, C. tropicalis and F. oxysporum and that P. digitatum had the highest frequency (43 %) of occurrence. The results also revealed that T. viride and P. chrysogenum significantly inhibited the pathogens on petri-plates using dual-confrontational assay. The phytochemical profile of the bioagents indicated there were flavonoids, cardiac glycosides, phenols, alkaloids, tannins, saponins and steroids present. Metabolites of the bioagents against the pathogens indicated that T. viride recorded the highest MIC against Fusarium oxysporum77±1.0and the highest MFC against Aspergillus wentti 97±1.0. Also, P. chrysogenum recorded the highest MIC against Fusarium oxysporum 59±1.0 and the highest MFC against Fusarium oxysporum74.33±1.52. This study indicated the antagonistic potentials of using Trichoderma viride and Penicillium chrysogenum in controlling pathogens of citrus sinensis and this could be exploited further in formulating biopesticides to improve post-harvest qualities of Citrus.
    Type of Medium: Online Resource
    ISSN: 2321-0893
    URL: Article
    DOI: 10.24203/ajas.v8i1.6047
    Language: Unknown
    Publisher: Asian Online Journals
    Publication Date: 2020
    detail.hit.zdb_id: 2944268-0
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  • 10
    Online Resource
    Online Resource
    Metagenomic study of the tomato rhizosphere soil microbiome: current state and prospect
    American Institute of Mathematical Sciences (AIMS) ; 2023
    In:  AIMS Geosciences Vol. 9, No. 2 ( 2023), p. 330-356
    Details
    In: AIMS Geosciences, American Institute of Mathematical Sciences (AIMS), Vol. 9, No. 2 ( 2023), p. 330-356
    Abstract: 〈abstract〉 〈p〉Plant microbiota has a variety of impacts on the plant. Some are beneficial, while some are pathogenic. This study discusses the general metagenomics procedures in processing plant-related metagenomes and focuses on the tomato plants' rhizosphere species. Metagenomics, associated with eventual DNA, is isolated from environmental samples and thus permits absolute microbial population identification. Meanwhile, the genetic content of the DNA sample obtained allows the functional capability identification and biochemical procedure of many microorganisms. This review reveals the recent utilization and application of the potential of Next-Generation Sequencing (NGS) in agriculture. It involves plant-associated microbiota, the factors driving their diversity, and plant metagenome to tackle current challenges experienced in food security. This review provides the newest methods for rapidly identifying the microbial communities inhabiting the rhizosphere soil of tomato plants.〈/p〉 〈/abstract〉
    Type of Medium: Online Resource
    ISSN: 2471-2132
    URL: Article
    DOI: 10.3934/geosci.2023018
    Language: Unknown
    Publisher: American Institute of Mathematical Sciences (AIMS)
    Publication Date: 2023
    detail.hit.zdb_id: 2836246-9
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