Biosynthesis of Silver Nanoparticles from Streptomyces Spp., Characterization and Evaluating of Its Efficacy against Phomopsis theae and Poria hypolateria in Tea Plants (Camellia sinensis)

Karthik, Namachivayam; Ponmurugan, P.; Gnanamangai, Balasubramanian Mythili; Suganya, Mani; Kavitha, Shivasji

doi:10.5101/nbe.v12i3.p272-280

Cited by 7 publications

(3 citation statements)

References 17 publications

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“…Silver nanoparticles were biosynthesized by using Streptomyces spp. that demonstrated very effective antifungal properties against Poria (69.90%) and Phomopsis (67.47%) (Natesan, Ponmurugan, Gnanamangai, Suganya, et al, 2020). A field study conducted on bio fungicides against Macrophoma sp.…”

Section: Actinobacteria As Biotic and Abiotic Stress Relieversmentioning

confidence: 99%

Potentiality of actinobacteria to combat against biotic and abiotic stresses in tea [Camellia sinensis (L) O. Kuntze]

Borah

Hazarika

Thakur

2022

Journal of Applied Microbiology

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Tea (Camellia sinensis (L) O. Kuntze) is a long-duration monoculture crop prone to several biotic (fungal diseases and insect pest) and abiotic (nutrient deficiency, drought and salinity) stress that eventually result in extensive annual crop loss. The specific climatic conditions and the perennial nature of the tea crop favour growth limiting abiotic factors, numerous plant pathogenic fungi (PPF) and insect pests. The review focuses on the susceptibility of tea crops to PPF/pests, drought, salinity and nutrient constraints and the potential role of beneficial actinobacteria in promoting tea crop health. The review also focuses on some of the major PPF associated with tea, such as Exobasidium vexans, Pestalotiopsis theae, Colletotrichum acutatum, and pests (Helopeltis theivora). The phylum actinobacteria own a remarkable place in agriculture due to the biosynthesis of bioactive metabolites that assist plant growth by direct nutrient assimilation, phytohormone production, and by indirect aid in plant defence against PPF and pests. The chemical diversity and bioactive significance of actinobacterial metabolites (antibiotics, siderophore, volatile organic compounds, phytohormones) are valuable in the agro-economy. This review explores the recent history of investigations in the role of actinobacteria and its secondary metabolites as a biocontrol agent and proposes a commercial application in tea cultivation.

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Section: Actinobacteria As Biotic and Abiotic Stress Relieversmentioning

confidence: 99%

Potentiality of actinobacteria to combat against biotic and abiotic stresses in tea [Camellia sinensis (L) O. Kuntze]

Borah

Hazarika

Thakur

2022

Journal of Applied Microbiology

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“…Biology and medicine have used AgNPs as antimicrobial substances because they have strong biocidal effects on microorganisms [19]. They have been used for many years to prevent and cure ailments and infections.…”

Section: Introductionmentioning

confidence: 99%

“…The biosynthesis of AgNPs using plants is the preferred method due to its fast, easy, eco-friendly, nonpathogenic, cost-effective, conservative convention and the introduction of a solitary advance strategy for biosynthetic procedures [21]. This includes the synthesis of AgNPs using a leaf extract of green tea [17], Aristolochia bracteolata lam [19], Enicostemma axillare [22], Tribulus terrestris [23] and Cocos nucifera [24].…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of Silver Nanoparticles from Fermented Bush Tea (Athrixia phylicoides DC) Leaf Extract and Evaluation of Their Antioxidant and Antimicrobial Properties

Mashau,

Mamagau,

Foforane

et al. 2023

Fermentation

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Green synthesis is a promising strategy for producing eco-friendly, non-toxic, and less expensive metallic nanoparticles from plants and microorganisms. This research synthesized silver nanoparticles (AgNPs) from fermented leaf extract of bush tea (Athrixia phylicoides DC). The physicochemical characterization of AgNPs was conducted by UV-vis spectroscopy, Fourier Transform Infrared Spectrometry (FTIR), and Differential Scanning Calorimetry (DSC). In addition, the total phenolic and flavonoid contents, antioxidant and antimicrobial activities of AgNPs were evaluated. The results indicated the successful formation of AgNPs by a visual change of color in fermented bush tea leaf extract from black to brown and in unfermented bush tea leaf crude extract from dark brown to light brown. The UV-vis spectrum of the reaction of the mixture of synthesized AgNPs with unfermented and fermented bush tea showed maximum absorbance at 457 nm and 450 nm, which confirmed the formation of AgNPs. FTIR revealed the functional groups of a leaf extract from bush tea that contributed to the reduction and capping process. The thermal properties suggest that low thermal stable compounds contributed to the reduction of Ag+ to Ag° in the phyto compounds found in the extract. The total phenolic content was higher in fermented AgNPs (290.44 mg/g GAE) compared to unfermented AgNPs (171.34 mg/g GAE). On the other hand, the total flavonoid content was higher in unfermented AgNPs (17.87 mg/g CE) than in fermented AgNPs (9.98 mg/g CE). Regarding antioxidant activity values, unfermented AgNPs had the highest FRAP (535.30 TE/mL) and 47.58% for DPPH. Fermented AgNPs had more antimicrobial activity than unfermented AgNPs. The results show that bush tea leaf extract can be used in different industries such as food, cosmetics, and biomedical.

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Enhanced biosynthesis of coated silver nanoparticles using isolated bacteria from heavy metal soils and their photothermal-based antibacterial activity: integrating Response Surface Methodology (RSM) Hybrid Artificial Neural Network (ANN)-Genetic Algorithm (GA) strategies

Mechouche,

Merouane,

Addad

et al. 2024

World J Microbiol Biotechnol

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Biosynthesis of Silver Nanoparticles from Streptomyces Spp., Characterization and Evaluating of Its Efficacy against Phomopsis theae and Poria hypolateria in Tea Plants (Camellia sinensis)

Cited by 7 publications

References 17 publications

Potentiality of actinobacteria to combat against biotic and abiotic stresses in tea [Camellia sinensis (L) O. Kuntze]

Potentiality of actinobacteria to combat against biotic and abiotic stresses in tea [Camellia sinensis (L) O. Kuntze]

Biosynthesis of Silver Nanoparticles from Fermented Bush Tea (Athrixia phylicoides DC) Leaf Extract and Evaluation of Their Antioxidant and Antimicrobial Properties

Enhanced biosynthesis of coated silver nanoparticles using isolated bacteria from heavy metal soils and their photothermal-based antibacterial activity: integrating Response Surface Methodology (RSM) Hybrid Artificial Neural Network (ANN)-Genetic Algorithm (GA) strategies

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