Preservative potential of biosynthesized silver nanoparticles: prevention of xylem occlusion and microbial proliferation at postharvest stage of preservation

Das, Dipayan; Ghosh, Dipankar; Mandal, Palash

doi:10.1007/s11356-020-11832-7

Cited by 4 publications

(5 citation statements)

References 51 publications

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“…Our earlier studies in this aspect have determined phytosynthesized silver nanoparticles as a preservative solution in prolonging the shelf life of mulberry leaves by seven days. Observations of our studies reveal that photosynthesized silver nanoparticles using mulberry leaf extract prevent the formation of xylem blockage by inhibiting microbial proliferation 14 , thereby maintaining conducting column continuity. Nanoparticles as preservative retains uniformity of photosynthetic apparatus and primary metabolite content.…”

Section: Introductionmentioning

confidence: 72%

“…Firstly, it will promote the engagement of landless farmers, and secondly, it will increase the rearing productivity during the rainy season. Our earlier study in this aspect identified phytosynthesized silver nanoparticles at 6 ppm concentration significantly retains the physical texture of leaves till day 7 post-harvest 14 . We reported that nanosilver delays the senescence process by preventing the accumulation of molecules capable of causing oxidative damage through up-regulation of defensive processes, thereby preventing deterioration of primary metabolites 13 .…”

Section: Discussionmentioning

confidence: 89%

“…A decrease in water transport significantly promotes the decomposition of chlorophyll and accelerates leaf yellowing 54 . Our earlier study showed that during post-harvest preservation, blockage of xylem lumen by microbial proliferation and accumulation of secondary polymerized molecules interferes with the water-conducting pathway in CO7, promoting senescence and wilting 14 . Down-regulation of associated photosynthetic processes in CO7 was probably due to alterations in the structural and functional capability of the chloroplasts and associated proteins.…”

Section: Discussionmentioning

confidence: 99%

“…The leaves were preserved in 20 ml 6 ppm phytosynthesized silver nanoparticles 13 and an equal volume of distilled water (pH 7) maintaining three replicated sets of each and each sets contains 15–20 leaves. Before inserting the petioles of the leaves within the preservative solution, a fine oblique cut of the petiole end was done to maintain the conducting column integrity 14 . The experimental setup was maintained at 260–270 lx, 40% humidity, and 25 °C for seven days.…”

Section: Methodsmentioning

confidence: 99%

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Transcriptome analysis of mulberry (Morus alba L.) leaves to identify differentially expressed genes associated with post-harvest shelf-life elongation

Das

Bhattacharyya

et al. 2022

Sci Rep

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Present study deals with molecular expression patterns responsible for post-harvest shelf-life extension of mulberry leaves. Quantitative profiling showed retention of primary metabolite and accumulation of stress markers in NS7 and CO7 respectively. The leaf mRNA profiles was sequenced using the Illumina platform to identify DEGs. A total of 3413 DEGs were identified between the treatments. Annotation with Arabidopsis database has identified 1022 DEGs unigenes. STRING generated protein–protein interaction, identified 1013 DEGs nodes with p < 1.0e−16. KEGG classifier has identified genes and their participating biological processes. MCODE and BiNGO detected sub-networking and ontological enrichment, respectively at p ≤ 0.05. Genes associated with chloroplast architecture, photosynthesis, detoxifying ROS and RCS, and innate-immune response were significantly up-regulated, responsible for extending shelf-life in NS7. Loss of storage sucrose, enhanced activity of senescence-related hormones, accumulation of xenobiotics, and development of osmotic stress inside tissue system was the probable reason for tissue deterioration in CO7. qPCR validation of DEGs was in good agreement with RNA sequencing results, indicating the reliability of the sequencing platform. Present outcome provides a molecular insight regarding involvement of genes in self-life extension, which might help the sericulture industry to overcome their pre-existing problems related to landless farmers and larval feeding during monsoon.

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Section: Introductionmentioning

confidence: 72%

Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Transcriptome analysis of mulberry (Morus alba L.) leaves to identify differentially expressed genes associated with post-harvest shelf-life elongation

Das

Bhattacharyya

et al. 2022

Sci Rep

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“…It is generally believed that the principal reason for reduced vase life is the proliferation of endogenous bacteria in the stem ends of cut flowers ( Li et al., 2019 ; Das et al., 2021 ; Liu et al., 2021 ). Proliferating bacteria block the stems and hinder the absorption and transportation of water.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of silver nanoparticles using Eucommia ulmoides leaf extract for inhibiting stem end bacteria in cut tree peony flowers

Zhang

Guo

et al. 2023

Front. Plant Sci.

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Tree peony (Paeonia suffruticosa Andr.) is a popular cut flower among ornamental plants. However, its short vase life severely hinders the production and application of cut tree peony flowers. To extend the postharvest longevity and improve the horticultural value, silver nanoparticles (Ag-NPs) was applied for reducing bacterial proliferation and xylem blockage in cut tree peony flowers in vitro and in vivo. Ag-NPs was synthesized with the leaf extract of Eucommia ulmoides and characterized. The Ag-NPs aqueous solution showed inhibitory activity against bacterial populations isolated from stem ends of cut tree peony ‘Luoyang Hong’ in vitro. The minimum inhibitory concentration (MIC) was 10 mg L−1. Compared with the control, pretreatments with Ag-NPs aqueous solution at 5 and 10 mg L−1 for 24 h increased flower diameter, relative fresh weight (RFW), and water balance of tree peony ‘Luoyang Hong’ flowers. Additionally, malondialdehyde (MDA) and H2O2 content in pretreated petals were lower than the control during the vase life. The activities of superoxide dismutase (SOD) and catalase (CAT) in pretreated petals were lower than that of the control at the early vase stage and higher at the late vase life. Furthermore, pretreatments with Ag-NPs aqueous solution at 10 mg L−1 for 24 h could reduce bacterial proliferation in the xylem vessels on the stem ends by confocal laser scanning microscope (CLSM) and scanning electron microscope (SEM). Overall, pretreatments with green synthesized Ag-NPs aqueous solution effectively reduced bacteria-induced xylem blockage of cut tree peony, resulting in improved water uptake, extended vase life, and enhanced postharvest quality. Therefore, this technique can be used as a promising postharvest technology in the cut flower industry.

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The in-situ synthesis of porous halamine nanodots inside a bacterial cellulose nanofibrous hydrogel with robust chlorine rechargeable biocidal function

Ma,

Li,

Zhang

et al. 2023

Cellulose

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Preservative potential of biosynthesized silver nanoparticles: prevention of xylem occlusion and microbial proliferation at postharvest stage of preservation

Cited by 4 publications

References 51 publications

Transcriptome analysis of mulberry (Morus alba L.) leaves to identify differentially expressed genes associated with post-harvest shelf-life elongation

Transcriptome analysis of mulberry (Morus alba L.) leaves to identify differentially expressed genes associated with post-harvest shelf-life elongation

Green synthesis of silver nanoparticles using Eucommia ulmoides leaf extract for inhibiting stem end bacteria in cut tree peony flowers

The in-situ synthesis of porous halamine nanodots inside a bacterial cellulose nanofibrous hydrogel with robust chlorine rechargeable biocidal function

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